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4G13 and 4G15 Modification From Mild to Extreme

This post is created for those who wish to modify their 4G13 and 4G15 from mild to extreme machine. From what I understand, a lot of car enthusiast wish not to go through all the hassle of transplant an engine and they prefer to play on their factory fitted engine. Some will say that you won't gain any knowledge by just putting in a powerful engine without going through the "step by step" modification experience.

Ok, let's start with the 4G13 engine. It is 1.3 liters engine which is known as economic fuel consumtion engine. 4G15 is 1.5 liters model is the base range model and produced a little more HP compare to 4G13. The 1.5 engine is very much your economy engine with only 90hp on engine. It can be modified easily and with surprising results. If going down to NA (naturally aspirated) path, with some modifications you can easily up the HP approximate 120hp on engine. If going to FI (forced induction) path, the low boost turbo systems will easily produce more HP compare to NA path.

For those older 4G13/4G15 from the Saga, Wira and Satria model, it is a standard 12 valves carburator engine. Normally people will upgrade their engine either to a EFI (electronic fuel injection) or to a performance carburetor, to name one WEBER). However, not all mods are for power though, there are many area's of braking and suspension that any stock car can always be improved with. Along with other drive line upgrades, you can have a smooth reliable car, with improved handling, and provide that little bit of sporty power to keep most people satisfied.

So I would like to compile a list of modification that can be done for 4G13 and 4G15. This section is to be used as a guide in your modification - I will be breaking this into sections to provide a well balanced vehicle.

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Mild Modification
The mild modifications are designed for the every day driver, wanting improvements across the board without sacrificing road comfort, fuel economy or driveability.

1. Quick Shifters
The Mitsubishi gear shifter system is one of the better ones on the market. But that does not mean that people do not want to improve them. This is one of those modifications that can be done at any time. For those performing any level of competition work, or just want something a little more extreme, the Rally Spec Unit reduces overall movement by as much as 65% over stock.


2. Air Filters and Cold Air Intake Kits
The factory air box system on these vehicles, is quite restrictive.
1. Fitment of an aftermarket replacement air filter. You can get it from K&N which this will improved air flow and throttle response
2. Fitment of a Cold Air Intake Kit.

The Cold air kit relocates to the front bumper, pulling cold air especially where utilized with a aftermarket front bumper. Any aftermarket open pod filter is fine. The plastic pipe kit we honestly recommend, other than being the cheapest, is one of the best bang for dollar modifications you can do.



3. Exhaust System Upgrade
Since you have done a good job for the intake system, now is the time to do something about the exhaust system.Upgrading the exhaust system is one of the most beneficial modification and gain the most HP compare to others. In short, it worth the money to change the exhaust system. For stock 4G13 and 4G15 exhaust system, the size of the exhaust is about 1.5 inches to 1.6 inches. However, before you start to change the exhaust system, you must make a decision on until which level you plan to mod your car. Mild, medium or extreme modification has totally different exhaust size modification. Why I advised you to make the decision before moding the car because  you can save up some money for this modification. To be honest, I wasted a lot of money for my satria's exhaust system. This is because I changed the exhaust for 1.3L engine then change again for MIVEC engine and then change again for my current 4G93T  now. So you can imagine how much I had wasted for only the exhaust system. For moding the exhaust system, I suggested few guidelines as following:-

1. Naturally Aspirated - Carb / Stock ECU- You are only after mild improvements to make the car sportier, but don't intend to do any real serious mods. This being the case stick with replacement of the stock exhaust with either a rear muffler upgrade only 1.7" flow oval shaped unit, or complete it with a 1.7" press bent exhaust system with new muffler and resonator. Cat converter should remain stock. Any larger on the system would not provide without sufficient more expensive mods, any real gains.
2. Naturally Aspirated - Piggy Back ECU - you are after mild to medium improvements to make the car sportier, with slightly more than average vehicle modifications. This being the case, we recommend a 2" diameter replacement exhaust with a new resonator and muffler. No need to go mandrel bent unless you have money to throw away. This setup will handle the majority of modifications we have listed short of turbo systems
3. Naturally Aspirated -Standalone ECU - okay you are an extreme modder. Twin throttle bodies, camshafts the list goes on. We recommend in this case either a 2.2" mandrel bent system
4. Turbo Charged - 2.5" is more than enough for a 4G13 or 4G15 stock bolt on turbo.


4. Suspension Upgrade - Level 1

Basically at this point you are still have a midly modified vehicle and want to just improve the looks slightly and handling. I recommend in this situation the following

1. Replacement of stock springs with some lowering units - either 30mm or 50mm lowered units depending upon how low you want to go.
2. Fitment of a sway bar. Reduces body roll without reducing drive ability.
3. Fitment of a strut brace. Reduces the tendancy of the vehicle to float on the road and makes it less sensitive to changes in road camber, resulting in less need to constantly adjust the steering wheel to keep the car driving straight.

This package will proved a well balanced vehicle, capable of handling corners at higher speeds, will feel safer at higher speeds especially above 100km/hr. The steering will feel more precise and you will have overall more confidence in pushing the vehicle harder.

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Medium Modification
The medium modifications are designed for those who want more HP from their car.

1. Extractor Upgrade
Original extractors are always not equal. But in reality, any half decent designed unit will be an improvement over the stock manifold on the vehicle. There are two types of designs. One is the 4-1 design which is design to produce power at the high rpm. This setup is suitable for those who always want to rev high. The other design is the 4-2-1 which is design to produce power at the low rpm, better torque response. This setup is suitable for those daily drive machine. 

If your plan is to go turbo, then save your money and jump ahead several more levels. This is not for you. For everyone else, this will complete the balance of your exhaust system modifications.


2. Fuel Pressure Upgrades
This is the one thing we believe that these vehicles should always have fitted regardless of how little, or much you modify the vehicle. Quite simply the factory vehicle has been tuned for maximum Economy. This has resulted in a fairly large flat spot off idle when accelerating hard from a standing start of from a cruise mode situation. The reason for this is Mitsubishi has tuned very lean on the accelerator pump settings, resulting in the lack lustre performance on throttle, but excellent fuel economy.

1. Fitment of the Fuel Pressure Regulator kit eliminates this flat spot, whilst only marginally reducing your fuel economy. Without going into huge detail, trust us when we say, flat spots are eliminated, your car will actually accelerate properly without hesitating and your fear of being run over at stop signs will diminish rapidly. This is an easy bolt on kit and can usually be done in around 1 hour maximum.

2. There are company manufacturing bored out fuel rail, which increases the fuel capacity within the fuel rail. This enables upon acceleration, a greater volume of fuel to become available before leaning out. This also reduces the tendancy to pulse the fuel and create disturbances in the fuel flow, providing a smoother transition to power.


3. Single Throttle Body Upgrade / Thermo Block Kit
Time to look at improving throttle response again. Now if you are wanting to go a little more extreme, to a twin system then you need to wait a little longer. For everyone else, time to start looking at improving throttle response, even if you are going turbo.

The stock throttle body on the 4G15 SOHC engine is 46mm. I Recomends for the majority of owners to do the following

1. For all 1.5 SOHC owners, upgrading the stock to 51mm or a 55mm is very beneficial. However on the SOHC models, anything with the stock manifold and cylinder head over 55mm is really just not effective
2. For all 1.6 SOHC owners, upgrading to 55mm is extremely beneficial.
3. For 1.6 SOHC owners with upcoming computer mods (Piggy back ECU) then a 60mm is also very beneficial if you are remaning Naturally Aspirated and don't plan on going to a twin system. If you are going to a turbo, then stay with the 55mm.

Whilst this work is being done, I recomend fitting at the same time a Thermo Block Kit. Consider this an extension of the cold air intake kit be reducing heat soak into the intake manifold from the engine and the throttle body which have hot water running through them. This drops the average intake tempatures by 25% overall resulting in improved combustion, fuel economy and throttle response.

This package adds 3-5hp, but does improve throttle response and low rpm driveability. The thermoblock kit reduces heat soak and this allows the engine to maintain maximun ignition timing with max throttle response.


4. Drive Line Upgrades
There are three main driveline upgrades which can be done, which go a long way towards improving the reliability of the engine as well as driveability.

1. Lightweight Crankpulley - this unit reduces both the moving mass of the front harmonic balancer, as well as being physically smaller by around 25% diameter over the stock unit. Helps to make the car rev faster, spins up faster and higher. The reduction in drive ratio's means that the power steering and alternator are turning less at higher speeds further reducing engine load. This is just small enough to reduce load without reducing the effectiveness of the operation of the alternator and power steering units. Highly recommended and very easily fitted.
2. Clutch Kit - At some point your clutch will need upgrading. Two options available - for naturally aspirated drivers a standard coverplate with a semi ceramic five pucker clutch disc package. This will increase clutch efficiency by 50% without any extra pedal effort required. For turbocharged vehicles, this is upgraded to a Heavy Duty unit with the cover plate strengthens by an additional 25%. This provides slightly increased pedal effort and more tendancy to be shudder on take off's but will handle the higher torque characteristics of a turbo.
3. Lightweight Flywheel - this has two benefits being increased strength over stock units and also make the semi ceramic clutch units more driveable by not allowing them to shudder as much. Second benefit is that they are lighter and enable the engine to rev easier, faster with less reciprocating weight. However, do not skim the flywheel to much because this will cause loss of torque.


5. Suspension Modifications - Level 2
Is time to have some upgrade for your suspension again. Since mild mod is only changing to a lowered spring, it is advisable to change the shock absorber as well for a medium modification.

1. Fitment of KYB Excel-G replacement units for the more budget conscious. Retains improved handling over stock.
2. Fitment of KYB AGX units. These are externally adjustable and are perfect for the all round street / strip / circuit car. You can set them soft when your on the road, hard when your driving hard. Adjustment takes less than 1 minute
3. Fitment if Koni Sports Inserts. These are similar to the KYB AGX units, but are serviceable and provide that little bit more control. They are a more precise unit, externally adjustable on the front only, internally adjustable on the rear. For the more sports conscious person these could be the better choice.

6. Brake Upgrades
Since the performance of the car is higher now, so it is better for us to have a good braking system. The stock brakes on the front is a 235mm single piston caliper package with drum rear brakes. There are few ways to improve the braking system.

1. For those already satisfied with the current HP gain, minor improving on front brake is fine by just changing the front brake pad to a performance brake pad and changing the rubber hose to those stainless steel brake hose. I personally recommend Pro-RS because it is cheap and reliable.
2. Next, you can replace the rear drum to rear disc. For Wira and Satria owner who wish to maintain PCD 100, you can always opt for Wira 1.6 rear disc brake, Putra, Satria GTi or Mirage Cyborg rear disc brake. While owners who wish to change to PCD 114.3, you can try to change to Lancer or Lancer Evolution brake system.
3. For those wanting the final level of brakes, fitment of a 276mm Twin Piston front brake and brake master cylinder upgrade is the final step.

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Extreme Modification

Now we are down to the serious modifiers. Comfort and driveability is usually second to engine performance and speed is your goal. These next levels are not only expensive and it require an experience mechanic to perform the modification. If anything goes wrong, you are not only wasting your money but also your time. Besides that, do think of whether after this final stage upgrade will the performance satisfy you? If not it is better to save up the money and go for engine transplant.

The following mods require you to decide, which of the following ways you are going which will be

1. Suspension Modifications - Level 3
 The last stage of suspension modification is changing to either coil over adjustable suspension or just adjustable suspension. There are few guidelines as below:

1. I recommend the Tien units. To put it quite simply, many Japanese units are set very very hard, so even on there softest unit the car is very harsh, hurts kidney's and actually has worse handling as it skips all over the road. The hardest setting on the Tien units, are equal to the softest setting on the Japanese normal imported units. I cannot recommend these enough - they are simply fantastic with the ability to set your road height, rebound levels etc.
2. These Tien Units are also available to be electronically adjusted on there rebound rates via up to one independent controller per corner, or one controller on all four units as an example. Mostly for extreme racing only.

2. Performance Camshaft 4G13 and 4G15
When selecting a performance camshaft, consider the use for which the vehicle will be required. We all know the claims: 20 BHP extra. Be conservative! Don’t over-cam your engine. Choose your cam for the correct application. Consider! Fit a milder cam and increase your power by 10 BHP at 3500 rpm. Remember! You get this 10 HP every time you accelerate through 3500 rpm. Multiply this by 10 HP each time you drive through 3500 rpm then deduct the times you reach 7500 rpm. I’m sure you will find more horsepower on the 3500 rpm side than the 7500 rpm calculation.

From what I observed recently, there is a cam produced by a local brand JASMA able to deliver 8hp on wheel for a totally stock 4G13 engine. 

The specification is :
Intake 270deg lift 9.35mm
Exhaust 275deg lift 9.20mm

Well, I am not saying something without any proof. Here is the dyno graph for before and after JASMA high cam installed (from squiparts.com).  By in mind that the dyno graph below is a totally stock 4G13 carburetor. Without any modification for the exhaust system and etc. The best part is this cam shaft only cost you about RM400++ which is worth to invest for a good performance.



3. Computer Modifications
Sorry to carburetor owner, this modification is only available for those EFI owner. There are two types of choices, either standalone or piggy back.

1. If you are still budget conscious, then stick with the piggy back. However do remember that EFI piggyback with Siemens VDO ECU is not work because Siemens VDO ECU do have the ability of reset the setting after sometimes.
2. Since budget is not the concern here then a standalone is what you need. Much more advanced tuning, with options like shift lights, in built boost controllers, many many more mapping points, much finer tuning. Additionally the stock ECU even with a piggy back is unable to cope with any camshaft changes at all.

For piggy back system, I recommend Greddy Emanage. If you have a tight budget, take the Greddy Emanage blue with ignition harness. If you have more budget, you may get the Greddy Emanage Ultimate which provide more tuning capability. I do not really recommend UNICHIP because you need to bring to their authorized dealer to tune your car. This is quite inconvenience for those who stay far apart from those authorized dealers.

For standalone system, I persoanlly recommend Apexi Power FC. This is because it has the commander for you to fine tune your car compare to the rest like Haltech/Microtech which need a special software from the tuner to tune it. However the downside of Apexi Power FC is, it is not universal, which means that it is built for particular car model. You may read my ECU upgrade for my Celica (Apexi Power FC) here. Haltech EMS systems - There is the E6X for those wanting something simple, or the Haltech E8 for those wanting the best. With the inbuilt boost controllers, and hosts of other functions, these are way ahead of trying do piece together a piggy back with separate boost controllers, shift lights, gauges etc.

4. Intake Manifold Upgrade / Twin Throttle Body / 4 Throttle Body Conversion
If you are remaining Naturally Aspirated you have several options.

1. First you can go for a single throttle body with Internal Ram Tubes. Massive throttle response, Haltech piggy back system great looks without extreme levels of tuning required. Significant torque improvements and can be utilized up to a single 60mm throttle body
2. Upgrade utilizing stock manifold, modified with fitment of a second throttle body - twin throttle body conversion. Either twin 46mm or twin 51mm throttle bodies work very nicely for a progressive throttle response and great top end rush of power. This system is fantastic and highly recommended if insurance premiums are a 3. The third option is a combination of a Performance Intake Manifold and twin throttle body. Massive plenum chamber, improved air flow, progressive throttle response, this is nearly equivalent to a quad throttle body kit without the side effects and all of the benefits. Massive air flow and the ability to tune with a piggy back or EMS system. Not turbo compatible of course.

5. 1.6 SOHC Stroker Kit Package
Some people not believe their stock engine can be 1.6 liters. These engine can fit 4G18 Stroker kit which is 1.6 liters in capacity. Stock 1.5 block will be rebore n some modification on the stroker needed. Beside 4G18 from Proton Waja 1.6L, another option is the S4PH from the 1.6 Campro engine. The S4PH is lighter which I believe the engine is easier to rev. Furthermore, SP4H has a longer stroke which capable to bore and stroke it more than 1.6L but the durability and reliable is a doubt here since I personally have not see a 4G15 bore more than 1.6L. Comparing the CC that able to get from 4G15 after the stroker kit are 4G18 -> 1584cc and S4PH -> 1597cc.


6. Turbocharger Conversion Package
What more can I say other than your a horsepower and boost Junkie. Welcome to the rest of the world. This combines extreme levels of torque and power, with neck snapping acceleration. It comes at a cost though, increased fuel economy, higher insurance and lots of money. But lets get something clear first.

1. Anyone believing they can effectivly fit a turbo kit on there car safely, properly and legally.
2. These engines in stock form will not handle above 1 PSI boost without aftermarket computer management despite what people believe. 25 : 1 rising rate fuel pressure regulators, larger injectors, moving the distributor to retard timing all these tricks - none work. Don't skimp.
3. 5th Injector systems are something that came and died in the 80's. Quite simply this does not distribute fuel properly to all cylinders, and still does not provide ignition timing adjustment.
4. For boost levels up to 10 psi can be done safety on the stock head gasket dependent upon tuning and intercooler efficiency.
5. For boost levels up to 14 psi requires an upgraded decompression head gasket.
6. Do not boost above 14 psi on the stock piston / conrod setup otherwise you will learn what a banana conrod looks like.

The 4G15 SOHC engine at around 12 psi is good for around 130kw at the flywheel at the extreme.


Finally, it reached the end of this post. My advice for those who still do not satisfy the power gain from all these modifications, you should instead either look for another car or look to do a engine swap to a larger mitsubishi engine.

If you have any other modifications wish to share with me, do email me at ben9166@gmail.com or drop me a comment. Thanks for the support.

425 comments

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Anonymous said...

hi ben..
my 4g13 carb got prob on 5th gear la..4th gear i can tarikk 190km/h,7200rpm sumthing,after change the 5th gear mampus laaa 170km/h..

-standard flywheel+clucth 1.6
-matspeed 282+campulley,retard 3
-piping 1.7

any suggestion Ben?plzz...

Trent said...

Hey man im running a stock 1.5 4g15 (carby) in my 94 cc lancer coupe... What kind of hp increase can I expect from upgrading the extractors and air intake?

Ben said...

Hi,

I assumed that you plan to fit in 4G18 stroker kit. However there is a risk to bore a 71mm bore to 76mm where reliability is an issue. If you are talking to fit in 4G15 then it should not be a problem.


Ben

Ben said...

Hi,

Regarding the top speed drop issue, can you please try to check the clutch lining? This might cause your top speed drop.


Ben

Ben said...

Hi Trent,

An air intake and extractor will not give you much. It might be around 5-6% increase of your current hp. Please bare in mind that it also depends on your engine condition.


Ben

Anonymous said...

Hi....I'm kenny from sarawak....my drive is 4g13carb proton iswara......i have change my manifold to 4-1....and 2inch pipe..i also jam speed silence. And n1 muffler........with 17inch rim..isn't very slow drive to 120km..?and I also want about use original air filter or install power flow more better?

popo said...

hi ben,

can you tell me what is this http://www.mudah.my/Turbo+T3T4+T04E+jasma+new-11931315.htm is it okay if i just apply to my 4G13 satria engine? is there any bad effect for my car if i apply this thing.

popo

Ben said...

Hi Kenny,

2" pipe is quite big for your 4G13. Try change to 1.8" piping. 4G13 to drag the 17" rim is way too heavy for it. My suggestion is to change back to 15" for better performance. For power flow filter, it is better for you to install a CAI.


Ben

Ben said...

Hi Popo,

It is a turbine for the turbo system. You may apply to your 4G13 satria but it is a burden for your 4G13 to "blow" the turbine. The turbine may end up only to work at 5-6k rpm. So it is not advisable to install a AR50 to your 4G13. My suggestion is to install AR48 or TD04 if you wish to bolt on turbo to your 4G13.


Ben

popo said...

thanks ben.

how about upgrading my throttle body. can you tell me specificly about the size,brand.
one more thing is it okay if i use TRUST twister tabung tengah for my exhaust? is it possible to use 2 tabung tengah?

maxx said...

Hi Ben,

Hope you can help.

I am driving a wira se 1.5 (year 2005). My mechanic try to install a bigger 1.6 tb but it wont works.

Is there any step or technique to do this?

My car cant accept other 1.5 vdo tb or 1.6 vdo tb. here is the photo of the new 1.6 tb.

http://www.facebook.com/media/set/?set=a.2370037701298.132209.1561146881&type=1

This new tb had try on other wira and they are working fine.

Thanks,
Maxx

Anonymous said...

Hi Ben,
I've currently using 4G13 engine...and there are some question...Is 4g13 12 valve head can fit to 4g15 block...

and what is the problem if a temperature rises when i run my car about 120km/h on highway...i already change the radiator and the foreman said that my water pump is in good condition...the temperature rises rapidly when i accelerate while using aircond...

From Junzz

Ben said...

Hi Popo,

You may use the GSR throttle body or something bigger from Perdana or Mivec throttle body. Yes, you may use 2 tabung tengah for your car but please make sure that it won't affect your exhaust flow.

Ben

Ben said...

Hi Maxx,

1.6 TB is the MMC TB so it won't fit to your car. But as what you said 1.5 svdo not able to fit your car then this is not right. Try to change to another experience mechanic for better solution.

Ben

Ben said...

Hi Junzz,

Yes, you may bolt 4G15 block to 4G13 head. They both share almost same components except the block.

For your temperature raising issue, have you check your engine gasket? A wore out gasket will cause temp issue. Try to start your engine until operating temp, then open up your radiator cap and inspect the water. If there is bubbles from it, indicates that your gasket is giving problem.

Ben

Anonymous said...

Hi Ben,
Thankz fr ur advise...i'll check the gasket, and its burn...

cn u give me a better suggestion about intake system for 4g15...i've currently finding the best kit for my car...compared fuel injection to twin weber which give more power...

junzz..

Anonymous said...

Hi Ben,
do you know the original spring rate (Kg/mm) for front/rear of Wira 1.5 (1997)?

Ben said...

Hi Juzz,

For the intake system for you 4G15, I will suggest you to go for injection. This is due to easy tuning in the future. Carb is good but only will good mechanic that know the carb well and able to tune it perfectly. If not you will suffer from fuel consumption and lost of power.


Ben

Ben said...

Hi,

If not mistaken, the spring rate for original wira is Front 2.3 and Rear 1.5.


Ben

kr33ps said...

Hi ben,
been follwoing ur thread for some time.
I'm driving a 97 satria.don't know much about the engine internal.
was wondering if i could change the pistons to high-compression pistons?if yes, what pistons i can opt to use?i was given the impression that there was a proton engine using high-comp pistons.

Ben said...

Hi kr33ps,

I assuming you are driving a 1.6L Satria. For high compression pistons, you may opt for the 4G92 MIVEC pistons.

Ben

kr33ps said...

oops...i'm driving a 1.5 satria...so sorry for the miss out..

Ben said...

Hi kr33ps,

For 4G15p 1.5L engine, you can opt for several pistons for different engines. There are 3 types as I know off; Campro 1.3 Piston, 4G91 Piston and Kembara Piston. If yours are 4G91, MIVEC pistons can be fitted in as well.

Ben

Anonymous said...

Hi Ben,

I need some information abaout using the s4ph stroker to fit in the 4g15...what should i do...any suggestion...all i need is to rebore the block to fit in the piston...or other else i need to do to fit in the s4ph crankshaft...actually s4ph crankshaft got something like gear on it right...

Anonymous said...

Hi,

I'm Iqmal from sabah...i need some information about putting the s4ph stroker to my 4g15...what item that be use to fit these things...from reading ur post...all i need is S4PH piston,Crankshaft,Conrond...and using the 4g15 crank bearing...how about the connecting rods...is it still using the 4g15 or the S4PH one...

Maxx said...

Hi Ben,

Thanks for the advise. May I know the different between 1,6TB for MMC and 1.5 VDO in terms of wire connection?

The header connection fits 1.6TB perfectly.

A.CORNER said...

hi ben...

car 4g15

1. does any problem when changing stroker 4g18 to 4g15 blok ?

2. How many HP increase when changing this 4g18 stroker?

3. Cost for install how much totally ?

please help me ..thank you

popo said...

what should i do to install 4g91 head to my 4g13?

Ben said...

Hi A CORNER,

1. If your mech is skillful enough then there is no problem for reliability issue
2. I can't tell your how many HP you gain. This depends on your engine condition.
3. RM2k++

Ben

Ben said...

Hi Popo,

Sorry to say that there you can't install 4G91 head to 4G13.

Ben

jambol said...

hye ben,
i am currently using 4g13p satria.
can i know what should i need to know to transplant 4g91 to my car?
which one is better? halfcut or enjin lantai?
can i maintain my gearbox?

Ben said...

Hi Jambol,

First of all, try to get a good condition halfcut. 4G91 to Satria is a direct plug and play and it is advisable to use all the wiring harness from the halfcut, this is to ease for better maintenance in the future where you will no need to worry about the mix match of wiring. Definitely a halfcut. Yes, you can maintain your gearbox but bare in mind that the gear ratio might not suitable to your new engine.

Ben

Anonymous said...

hi ben,

can 4g92 piston fit into 4g15 as stroker kit?


rhen

Ben said...

Hi rhen,

Unfortunately to say that it is impossible for you to bore the 4G15(75.5mm) block to fit in 4G92(81mm) piston.


Ben

geezmo said...

hi ben,how to check proton satria 4g13 coil,it shows no spark after i do a top overhaul,already do the 2nd check for the harness,no missed socket.TQ...

Ben said...

Hi geezmo,

Have you check your distributor?


Ben

Anonymous said...

hye ben,

i wan to upgrade my throttle body like u show which is twin or the four tb conversion.
btw, can i know where can i get those items for 4g13?
i saw levin with 4 tb.
the engine sounds very powerful.
how much the cost?

sorry for the newbie question.
pokoi

Anonymous said...

hi ben

can 4g13/15 distributor upgrade distributor 4g92p?..if can please advice how to plugin because distributor 4g13/15 is different..

thanks

claire

Anonymous said...

Hi Ben,

Thank you very much for this great article. I happened to drive 4G15 vdo and in midst of upgrading/improving this 10 yrs old baby. I would say that i fall under Mild - Medium modification category. I am seriously thinking to install Camshaft and Cam Pulley into my baby. I've done some asking, reading, blogwalking, forumwalking all over the internet and i can safely say that most of the articles ive read or forums i viewed talks or recommend either Powerzone/Piper/Works Camshaft and mostly (unfortunately) were less impressed with Jasma. Can you comment and advice me on which brand should i go for? Really appreciate your reply.

Zan.

PS: Regardless of $, my interests is on reliability, stability and power.

Anonymous said...

why is my 94 lancer el 4g13 carb engine,emmits white smoke?when some mechanics in manila says its not burning oil..why so?

Ben said...

Hi Pokoi,

You can get the 4 throttle body from the 4AGE engine. You need to modify it to fit into your car. Conversion fee will cost you around RM2k.


Ben

Ben said...

Hi claire,

No. If you wish you need to fabricate the mounting for your engine.

Ben

Ben said...

Hi Zan,

First of all, I need to let you know that pipercam in Malaysia is a scam. It is not original from pipercam UK. For cam you may opt the powerzone which it is well proven in term of power.


Ben

Ben said...

Hi,

Have you check your engine oil level? Will it reduce? If yes there you may need to check your valve seal.

Ben

Colven said...

hi, Ben

what car are u currently driving.? izzit 4g15 hehe.. i wanna know ur current setting.. cause i driving 4g15. current mod is
Cold intake kit:Checked
Exhaust system 4-2-1, middle bullet changed and mugen exhaust.
My throttle body the air cond system already cut off and modified to toyota valve.
hmm but now i wan some advice what should i do next for more pick up and performance.
My email add is colventofu@gmail.com/w.colven@gmail.com

Anonymous said...

hi Ben,

how much diff response btw single n twin cam of 4g93?? n diff in hp btw 4-1 n 4-2-1 xtractor?
can u get me the best combination for pick up btw; 4-2-1, 4-1, 2.2" s flow, 2" js straight flow.

Anonymous said...

hey ben,
would it be hard to convert a 4g13 with carb in a 95 lancer to fuel injection

thanks

TJ said...

Helo Ben !
I need your advise about the air filter system .
Which is better , use the original pvc intake pipe or the steel pipe ?

Pls reply me Ben , cos my 1.3 no power lo !

Anonymous said...

ben,
before u use 4g93t. if im not mistaken ur using 4g13 right?
i dont know whether just to bore my 4g13 head to fit 4g15 piston or just convert to 4g91.
can u tell me the diffrent between 4g15 and 4g91.
how much whp and else.
can u tell me the result of ur dyno test before u convert to 4g93.
popo
*sorry for the bunch of question.

Ben said...

Hi Colven,

Currently, I'm driving a 4G93T. Change a lightweight crank pulley(with damper). This will definitely improve your car response. Next change a set of street spec cam.

Ben

Ben said...

Hi,

The different between a DOHC and SOHC 4G93 is definitely the HP and Torque. Besides that, you will able to gain more for DOHC compare to SOHC. I can't give you the exact HP for 4-1 and 4-2-1. If you are running on a 4G93 DOHC with mild mods, a 2" 4-2-1 is way better..

Ben

Ben said...

Hi,

If you are directly convert a transverse engine to your car then it is just a plug and play. However if you are only going to change the fuel injection only, you will need a set of wiring, ECU, throttle body and all necessary stuffs and a skillful mechanic to have this done. The second option is more risky.

Ben

Ben said...

Hi TJ,

Both are actually the same and does not make much different. The important point is to feed your engine a cold air.

Ben

Ben said...

Hi Popo,

Before 4G93T, I was using 4G92 MIVEC which I did not mentioned in my post earlier. For both your option, definitely converting to 4G91 worth the $$$ of converting. The different are quite a lot. For eg: HP, Torque, future modifications, share parts with 4G92, 93, where a lot of modification parts are available in the market. I can't remember how much I gained for my 4G13. If not mistaken, the most I was able to get is around 90-100whp which this is not worth the $ you spent to modify a 4G13 if you wish for higher HP.

Ben

4g93 said...

hai ben...
4g93 here. i using sohc now. will change to dohc head soon. need some guide fr u for NA modify...
1) i like uphill, zig zag n fast response, which xtractor to use 4-1or 4-2-1??? i'd change to 2" piping. very doubt on this, or u can give me more info on xtractor...
2) wat is the next performance part to change step by step most efficiently?? lightweight crank pulley, adj cam pulley, skim flywheel?? high cam?? safc?? e-manage?? vafc?? need ur suggest...
3) how to increase compression ratio higher??? izzit polish head??
hear fr u soon.... thx in advance...

vicent said...

hi ben
can wira vdo install hi-cam?? can i feel the power gain because many people tell me no== pls answer me as fast as possible pls!!!!

vicent said...

other than that any recommend shop to mod hi cam ?? XD around puchong or subang area XD thx alot

Anonymous said...

wow...great job....ben... great explaination...fuyo....

Ravagebang said...

Hi Ben...!
Very interesting tips for getting performance to my 4G15.

Can you recommend some websites where I could buy front strut bar, rear opper and lower strut bars? Thanks a lot...!

Ben said...

Hi 4G93,

1) i like uphill, zig zag n fast response, which xtractor to use 4-1or 4-2-1??? i'd change to 2" piping. very doubt on this, or u can give me more info on xtractor...
For better response for low end torque, 4-2-1 is a choice for you. 4-1 is meant for better high rev response.

2) wat is the next performance part to change step by step most efficiently?? lightweight crank pulley, adj cam pulley, skim flywheel?? high cam?? safc?? e-manage?? vafc?? need ur suggest...
If you going for uphill, it is advisable not to skim your flywheel where this will definitely reduce your car momemtum during uphill. The next you may do is lightweight crank pulley(but must come with damper to reduce vibration caused).

Then you may opt for a set of high cam with adj cam pulley.

VAFC is not applicable for your car where it is built for variable valve engine. So E-manage or SAFC is your choice here. If budget is not your concern, then my advise is to get the E-manage where it has a better tuning capability than SAFC.


3) how to increase compression ratio higher??? izzit polish head??
hear fr u soon.... thx in advance...
You may install a set of 4G92 MIVEC pistons where this will increase your compression ratio.


Ben

Ben said...

Hi Vicent,

Yes, wira vdo can install hi-cam. You can feel the power if you tune your car correctly. You may go to sunway area to get it done.

Ben

Ben said...

Hi Ravagebang,

You may go to ultraracing website, our local bar producer to get those bars.

Ben

Anonymous said...

thanks for the information ben,
i think i have made up my mind just to convert to 4g91.
one more thing, what is the engine code for gsr.
just want to know. for better understanding.

popo

Ben said...

Hi Popo,

The engine code for GSR is 4G93T.

Ben

Salim said...

Hye Ben,
Im thinking of installing a piggybank.
Which is a better deal between M7 or Emanage? are both item widely tuneable?

Anonymous said...

can you reccomend a tuning shop in ipoh?

Ryan said...

Hello Ben,

I really like what you did with the satria. Anyway, because of budget constraint I have decided to purchase a 2nd hand 1.3l satria. Even so, I am a little disappointed with the fuel system being carb. In any ways, it is better for me to swap the engine with a 4G15 or simply swap the Carb with a Fi. Since Fi is more realible and lighter. Or is there any better suggestions than the one I have given. Sorry, first timer. Hope you can help.

ryan

Ben said...

Hi Salim,

Basically both are the same. Just that Emanage is discontinue and Mutiara Motor rebadge it to M7. Both are widely tunable.

Ben

Ben said...

Hi,

In Ipoh, you may go to CM Motorsport at Menglembu.

Ben

Ben said...

Hi Ryan,

It is always a good idea to change to injection due to better tuning capability. Since you are having budget constraint, you might change the injection kit and if you wish to upgrade to 4G15, you can just change the block. Changing the entire 4G15 might cost you more than the option earlier.

Ben

Ryan said...

Alright thanks Ben! Will keep on following your blog. Hee.

Alex said...

Hye Ben

I'm from Kuching and I want to know the average price to bore the engine block of the 9G13 to 9G15 and also the price to replace the carbie to fuel injection system. Just a rough figure will do. Thanks.

Ben said...

Hi Alex,

I'm assuming that you are talking about bore the 4G13 to 4G15. The price will be around 600-1k. Price for injection kit will be 1.5k-2k. Anyway, my recommendation is to get the 4G15 block instead of bore the 4G13 for better reliability.

Ben

Freelance Wedding Photographer said...

Hi Ben,

my one is 4G15 auto...can i use the same modification ?

Ben said...

Hi,

Yes this is applicable for 4G15 auto as well.


Ben

Driftkingz13 said...

Hi Ben

Can 4G13 fit with Evo 3 Pistons and VR4 Body Throtter?

Ben said...

Hi Driftkingz13,

Sorry to say that no.


Ben

Anonymous said...

Hi Ben,

I've a few Q.

1. When I adjust the valve, is it affecting the timing? the pickup? takes more time to warm up the engine? cause I'm having a problem as stated above. What will you suggest? Is it the engine problem?

2. When I search for clutch plate, I've found so many series. I don't know the good one to fit in to my Satria 1.3 NA. Any suggestion. State the price also ya.

Thanks.
Regards,
Izmal

alpha said...

Hi Ben,
I'm currently having a svdo 1.5 auto, any modifications suggest?should I change to 1.6 striker kit or twin throttle body to increase acceleration?

Alpha

napi said...

hai ben.
Good post there. Hope you still on the thread.
I want to ask about overhauling my 4g15 engine. Because of the terrible smoke coming out from the exhaust.
Do you know which part specifically responsible for the smoke. Do i really need to do a full overhaul.
Or can i just upgrade the stroker kit from 4g18 or s4ph, and the smoke problem will be gone as well with it?
Thanks ben.

Anonymous said...

ben,

for air filter,drop in or open pod is better?

Ben said...

Hi Izmal,


1. Adjust valve won't affect the timing. Adjusting the cam pulley will. With proper advance or retard your timing it will affect your car output. Warm up issue probably will not be affected by adjusting the valve. Try to check your engine timing and set back according to your cam shaft spec.

2. If budget is not your concern, you may opt for Exedy clutch. Price range around RM550-650. If you want a lower budget clutch kit, you may get the BR Clutch. Which probably range between RM300-500.

Ben

Ben said...

Hi Napi,

Most probably smoke from exhaust is caused by the worn valve seal. You do not need a full overhaul. Top overhaul will make things work.

No. Upgrading to 4G18/S4PH stroker kit will not solve your problem.


Ben

Ben said...

Hi,

Depends on your mod. However open pod with CAI will definitely give you better air flow compare to drop in.

Ben

Anonymous said...

Hey what's up pips,my name is Charles Affentranger and I'm from NYC,New York. Really good articles and helpful though.
Okay just let me cut to the chest,now I'm on vacation trip( visit my family relative) for my winter,spring and summer break here in Tawau Sabah( What a great weather and country) and recently I've just make some modification/restoration for my uncle's car (Proton Wira 1.5)
*3" K&N open pot air fiter with modify air ram for carburetor inlet*Jasma 270/275 camshaft*Jasma adjustable cam pulley*Jasma lightweight crank pulley*Super touring flywheel,8" Exedy racing clutch (4G91)*Adjustable suspension and front/rear bar.
The problem is after done all modification seems like I heard really annoying noise came from the crank pulley....do I need to alignment back or just change the new one? Because this is my first project for Proton car.
Malaysian should be proud this little granny engine can produce really incredible power......respected.
Oh plus does anybody know where I can get used disc brake front and rear with pcd100x4? (with good price though LOL )
Thanks in advance o(-_^)O...

Ben said...

Hi Charles,

Most probably is caused by the crank pulley. If possible try to get those pulley with damper which it able to absorb vibration during driving. For front and rear pcd100x4 disc, you may get it from MunLee or you may visit www.mudah.my


Ben

Ong said...

Hi ben,
Currently I'm using DCNF40 in my 4G15 Wira.I heard my mechanic (Ramly Weber)said can put in Waja 4G18 crankshaft (small bearing) in 4G15 engine Without changing other parts like conrod,piston ...etc is that possible ? Actually my driving style are more towards pickup + city drive, not really for high rev.What kind of setup do u recommend ? TQ
P/S: I heard there is 2 different bearing size for 4G18 crankshaft is that true ?

Anonymous said...

Thanks for the feed back Ben,I'd just fixed my crank noise,all problem is solved and now I know what may cause it and what might been occur.

Well seems you like a Guru for Mitsubishi engines I got question want to ask,does 4G15 (carburetor) can install "Adjustable Fuel Regulator"?

I've already done installing oil cooler kit and oil catch tank now I've might been thinking if adjustable fuel regulator can suit it well.

I am not good mechanic( well just doing just for fun/part time)so I do need some guide line and help advice from generous Malaysian tuner seems this is my first project on Malaysian car ( I don't wanna screw up)

For those who got a videos or guide line do install adjustable fuel regulator and any of performance parts on 4G15(carburetor) your help are truly appreciate....

Charles o(-_^)O...

Anonymous said...

What's the part no of 4g13 injectors? & how.much cc?

nazidasyam said...

hi ben,

i'm naz.. i have a gearbox problem. i want 2 ask u why my 5th gear always pops out when i'm driving over 110km/h.. do i have to change my gearbox..? or should i overhaul n change all my gearbox bearing..?
i'm using 4g15p engine..
thanks...

Anonymous said...

hi ben,

your advice about the 4g15 engines modification (mild) impress me. so, i owned satria 1.5 s.e. and i plan to make MILD modification.
my car engines now is fully standart and can you give me a suggestion or list of what items should i change or...something like that.
can you send me via email?
here is my email adress: experience_mie@yahoo.com

thanks Ben!

Ben said...

Hi Ong,

Possible but there is no engine capacity increase. A set of mild cam, cam pulley, full exhaust system and lighten flywheel may help you.

Ben

Ben said...

Hi,

The injectors size for 4G13 is 145cc. However different batch of 4G13/15 has different injector size.

Ben

Ben said...

Hi Nazidasyam,

Please check your clutch before proceeding to overhaul your gearbox.

Ben

Ben said...

Hi experience_mie,

Already sent you a mail about this.

Ben

nazidasyam said...

hi ben...

thanks... but on 20/4 i've already change my clutch. i use 1.6 flywheel n new clutch set.. it still like that.. still pop up... please help me bout this prob...

Ben said...

Hi Nazidasyam,

Can you please check the internal shift linkage under the shift cover? Worn detent in the internal shift linkage can cause this problem. Besides that, worn external shift linkage that does not allow enough travel to trip the detent will also cause this, like in the old collum shift 3 speeds.

Ben

R5 said...

Hi Ben, wish to look foward for some knowledege from you :)

Heard that the vdo ecu will reset, actually what does this German's technology does?
I was planning to tune ecu and wiring to mmc, but my trustable mechanic told me is ok to tune on vdo, the reason he gave me is vdo able to rev till 8k rpm..
When i asked him about the reset thinggy, he said there's no such things..

kr33ps@yahoo.com said...

Dear Ben

I'll be sending my 4G15 for an overhaul sometime soon. I'll take the opportunity to install the MVV intake and header.
Just need to find out:
1. is ita direct fitting?Do I need to change to MVV pistons as well?
2. or can I opt to change to like what u have suggested to GEN2 pistons?
3. If I can opt for the GEN2 pistons, will it be just piston change or the whole set ie. including the piston rods and etc

If possible and if you have the time, can you detail out what need to be changed c/w the benefits/constrains.

Thanks in advance bro...

Anonymous said...

Hi Ben,

My car is Proton Saga 1.5 8Valve (1989) made. So far I have install the following items in my car :
1) open pod air filter
2) platinum spark plug
3) grounding cable

Apart from these items, what else can I add to my car to increase its acceleration/speed/pickup or whatsoever?

Can you suggest what can I modify from clutch system, gearbox,exhaust system,any else? I need ur help urget..Thanx..

Dyskater

Ben said...

Hi R5,

It is able to tune but it will self learn and revert your ECU setting.

Ben

Ben said...

Hi kr33ps

1. Not really a direct fit. For normal 4g15 chamber size is 36cc
For MVV 4G15 chamber size is 40cc. You need to adjust the head combustion chamber by using a metal head gasket
2. Yes, you can change to higher compression piston from GEN2 but you need to bore the cylinder block.
3. Whole set.


Ben

Ben said...

Hi Dyskater,

Clutch system, you may opt for 1.8 touring clutch. Gearbox you may use back your original 4G15p. Exhaust you need to change a whole set which from header to muffler but using 1.8" piping. For better response, you may change lighten crank pulley and bigger carburetor.

Ben

R5 said...

Hi Ben,

Thanks for reply, do you mean that VDO ECU will revert itself no matter how much i've tuned? Honestly what i've felt about VDO is the slow response..

For MMC ecu wiring is there any other choice except MVV?

R5

Anonymous said...

hi ben,
i'm currently driving a 1.5 svdo auto, willing to do a little slightly modification on it, because of the budget problem i only can do i of it can u suggest what should i do?

option 1 : 1.6 stroker kit
option 2 : BOT kit

alpha

Anonymous said...

Hi Ben,

satria 1.3SE year 2005, is there any recomended mod?
current mod:
-4-2-1
-lighten crank pulley
-adjustable cam
-1.6 lighten flywheel

is there any modification needed if i wan to install 264 hi cam?
n i heard many ppl said it is imposible coz of idling & ecu problem...
thanks

jordan

Ben said...

Hi R5,

Yes,it will learn your driving style and alter the ECU setting based on it. There are a lot of MMC ECU wiring. Anything from MMC EFi engine will work.

Ben

Ben said...

Hi Alpha,

Depends on your budget and which direction you like to go? NA or Force Induction? To me I prefer turbo where it will provide more power than NA with the same amount of money spent for the modification.

Ben

Ben said...

Hi Jordan,

Have you done the entire exhaust system and the intake? Besides that, you can change to a bigger throttle body. For 264 degree cam, there will be no problem for idling issue. Unless you go higher than 300 degree.

Ben

R5 said...

Hi Ben,

Thanks for information.
That's a sad news, 1 more question need your consult, does it increase any HP or pickup if i tune extractor and adjustable pully but the ecu remains with VDO? Cause im using super touring flywheel without skim on a 4g13, very heavy pickup >.<

Regards R5

Ben said...

Hi R5,

Yes, it will slightly improve you pickup and performance. If possible get your flywheel skim to perform better.

Ben

Anonymous said...

Hi ben, i was looking to get a 4g15 twincam, i have the single cam 4g15,do i need new wiring for this twincam 4g15?

Trent said...

Hi ben, I have a carbed 4g15 lancer and I was wondering If it were possible to turbo it without converting to efi, if so what mods would I have to do? Also I was wondering if it would be possible to make it able to beat my friends stock early 90's v6 holden commodore on the drag strip whilst remaining N/A? (im fairly competetive haha!) If so what would need doing?
Also which of the two paths would be more cost effective?
Don't really want to go efi and stuff around with wires and such :)
Cheers, Trent

Anonymous said...

Hi Ben, I'm Syam from Sabah. my original wira enine is 4G13 Magma Carburetor. for your info, i'm now changed engine to 4G15 Mitsubishi Carburetor Engine.some modification in process such as installing the items as follow:
1) Metal Gasket-but not works (water n engine oil mixed)n the block surface uneven but already go to engineering but still happen.some supplier said that type of metal gasket got problem.now use original proton gasket
2)Hicam piper(as i read is it scam?)
3)Super plug cable
4)valve spring
5)HKS Cam Pulley (3 Leg)
6)JASMA Crank Pulley
7)Kevlar Timing Belt
8) AVS Iridium + platinium racing plug
9)JASMA Racing Clutch-but not fit to new brought Mitsubishi 4G15 engine.later chane to Execy Racing Clutch fit to 1.6 Wira
10) Retainer titanium
11) MONROE Absorber n original proton coil spring
12) Accesories-Evo 3 dashboard, 4 nos complete door, bonet, side skirt, rear bumper lips, spoiler, mitsu 4 spoke steering, antena 5 steps and change to seat CK Batik. while front lamp change to projector n rear lamp use led.
13) Change rear brake drum to disc brake
14) WEBER Carburetor

other plan to change sport rim with good tyre,aluminium radiator with high speed fan as well good braking system. paint will be used white pearl BMW.now the mechanic try to tune the engine but still use original carburetor 4G15 but still cant get n 'misfire'as he said.

what is ur advise for tuning the engine, how to modified WEBER carburetor base, sport rim size with tyre type (maintain use PCD100). thanks since this is first time and interested to totally change my original 4G13 wira to powerfull engine with half evo3 appearance (but for ur info front bumper using wira se n rear maintain the wira specification). Thanks..

Ben said...

Hi,

I assume that your 1.5L single cam is 4G15p. Unfortunately it is not able to bolt with the 4G15 1.5L twin cam.

Ben

akinda said...

Can a fuel regulator be fixed in a carbie

nazidasyam said...

hi ben...

i would like to ask ur favour... about alarm wiring... can u give me wiring diagram for wira standart alarm... it have 14 wire input to alarm system..
thanks...

Anonymous said...

hi ben, which one u most recommend..stroker kit 4G18 from Proton Waja 1.6L or S4PH from the 1.6 Campro engine?it is for 4G15 modification.

thnks.

syam

Ben said...

Hi akinda,

Yes, please do remember to get the right one.

Ben

Ben said...

Hi nazidasyam,

I currently do not have the standard alarm wiring diagram. Will try to draw one out.

Ben

Ben said...

Hi syam,

I recommend you to get the 4G18 from Waja 1.6L.

Ben

Anonymous said...

Ben,
May I ask svdo can use e manage blue version or not?

Alpha

Anonymous said...

hai ben,

i am using 4g13 efi engine. i want ask u that if i just change 1.3 clutch to 1.6 clutch by using original flywheel can?
will it get more power?

Anonymous said...

hey ben,

i am using 4g13 efi satria. i wanted to ask you tat if i change the clutch from 1.3 to 1.6 by not change the flywheel cn?
if i not change the flywheel, will it can increase the power? o same?

Dzul said...

hi ben,

do you know how much will it cost if i wanna bore my 4g15 block to fit in the 4g18 piston+conrod and plus the jasma hi-cam? will it cost more than 1k?

Tommy Lee said...

Good

Tommy Lee said...

Im using 4g 15 ..svdo.... Wat brand u recomend to fit in lcp and adjustable campulley.. Becpz there is so many brand out there

Anonymous said...

hye bro..maybe i'm too late to ask u coz its already 2012 but i really appreciate if u help me on my question.
i would like to ask u..how can i modify my stock intake manifold?i'm planning to make it shorter n port polish it.what is puzzling me rite now is, i also going to oversize the intake n the throttle body. so what is the size that will match on for the intake n the throttle body?

i'm using:
4g13(mmc)
-head(ported polished)
-highcam
-stock throttle body

thanking u in advance bro..

Ben said...

Hi Alpha,

Yes it is able to work but close loop

Ben

Ben said...

Hi,

4G13 can fit 1.6 clutch. However it is advisable for you to lighten the flywheel since for better response.

Ben

Ben said...

Hi Dzul,

Stroker kit will cost you around 1.5-2k and labour will be another 1.5k+-. Jasma cam will cost you few hundred. So adding up this will be definitely more than 1k.

Ben

Ben said...

Hi Tommy Lee,

You can try mythelogy. But my advice is to find a well balance and with damper to absorb vibration of the engine.

Ben

Ben said...

Hi,

If you plan to make your manifold shorter than you need to customize it. Currently there is no ready made product for this. However you need to measure the air flow into your engine. Port and polish is a good idea to start with. (If you really going to custom the manifold, you may try to fit in 4 throttle to it)

For TB, you may fit the 4G93 to your engine. However you need to make sure to get it from those VDOs version. If possible get the ECU and knock sensor to avoid "slope" effect.

Ben

Anonymous said...

Thanks Ben,
One more question, if I install adjustable cam pulley with original cam got any effect or not?cause I wanted to advance timing to get better low end torque.

Regards
Alpha

Anonymous said...

hi mate!
i just want to know that now iam using p.wira special edition 1.5 and i want to use 4ag piston in that engine.. its that posible?


thanks
Indra (paydirt86@yahoo.com)

Anonymous said...

hi Ben,
wanna know what extractor that u recommend for saga 12v?? tq

muhammad Hazwan said...

hi ben

im using 4g15 carb what should i do to make my engine more power can u list to me what should i do thank you ben.. (^_^)

muhammad Hazwan said...

hi ben

i want to know a fuel regulator can use for carb engine or not??

Anonymous said...

hi ben,
ben i have a lancer 1.3l 2008, iwas thinking is it possible to swap the engine with 4a-ge 20v engine from toyota?..if it is what other things do i need to chnage along with it..would really appreciate your help and knowledge. regards mahadin.

Anonymous said...

hi ben,
my name is mahadin. what i would like to know is it possible to swap my 1.3l lancer 2008 model engine with toyota 4a-ge 20v engine?if so what else do i need to do? what im looking for is the acceleration on my car to go up. please advise or do suggest any thing else that i could do. you could mail me on my id is scubydu46@yahoo.com would really appreciate your reply.

regards.

Tommy Lee said...

Hi Ben
If I strokwd my wira to 1.6 cc waja crankshaft
if i bolt on turbi... What turbo piston low comp u advised??
my car is vdo
thx tommy

Ben said...

Hi Alpha,

Yes, you may have a little effect. But not much compare with having race cam.

Ben

Ben said...

Hi Indra,

No it is not possible. As for 4AG bore is 81mm while 4G15 is 75.5mm where you need to bore about 6mm. This is not only the problem. The next problem is the stroke part.


Ben

Ben said...

Hi,

For saga 12V extractor you may consider powerzone tuned length or from hotbits.

Ben

Ben said...

Hi muhammad Hazwan,

You can change to a better carb and performance cam. A set of full exhaust system as well. Yes fuel regulator can use on carb engine.

Ben

Ben said...

Hi mahadin,

Yes it is possible but you need to modify the mounting point. But bare in mind that this will definitely not able to get approved by JPJ.

Ben

Ben said...

Hi Tommy Lee,

You can use Mazda B6 low comp piston for your conversion.

Ben

muhammad Hazwan said...

what carb can i use ben?
n are u sure fuel regulator can use for carb?
can u show me ben??

Ben said...

Hi muhammad Hazwan,

You can use 4G91 carb.
Yes, I am sure.
Here is the pic of a carb with FR.
http://i429.photobucket.com/albums/qq11/406shark/S-10%20updates/gaugepanel-cage-carb001.jpg

Ben

Anonymous said...

hi ben

i have a lancer 2005 with a 4g18 engine and the 16 valves have blown after timing belt broke.

i want to change to 4g15 engine block with my old 4g18 ECU,4g18 aspiration and every thing else. will it work or will i have to redo the wirings.

thanks
sam

Anonymous said...

hi ben,

may i ask got any superchager kit for 4g15 svdo beside than powerzone? cause they not supplying superchager kit for my model.

thanks & regards
alpha

Anonymous said...

i have some prblem wth my 4G15 when i use 4g18 stroker.the cnrod cannot fit well...why ah??

Ben said...

Hi Sam,

Changing from 4G18 to 4G15 is a downgrade. Do you really want to change it. If only changing the block itself, it won't need any wiring works.

Ben

Ben said...

Hi Alpha,

I'm not pretty sure there is any shop providing supercharger for 4G15 beside powerzone. Anyway, there are a lot of car enthusiasts fitting a Toyota Estima charger into their cars.

Ben

Ben said...

Hi,

It is preferable to fit in the 4G15 conrod than using those from 4G18.

Ben

Anonymous said...

how do i improve top speed of my 2000 lancer gsr (2door) 4g92 efi non mivec engine by replacing or modifying the tranny?can i fit a 4g63 tranny to it?or can i fit a 4af tranny in it(corolla ae92 carb)?i have one in stock coz i changed my corolla to blacktop. Im from the Philippines

erin said...

hey ben, i got some question to ask, my satria currently in 4g13, if i want convert into 4g15 can i just only change the block(4g15 block) and leave the head and everything stock??? coz what ive been told that the only different is just the block.....thank you ben..>_<

Ben said...

Hi,

A 4G63 box will fit but you may need to modify the bolt pattern. Besides that, the mainshafts are all one piece, but if you want to get into machine a new mainshaft with removable gears then anything is possible.

Unfortunately, I can't give you much information about the 4AF gearbox as I have limited knowledge of it.

Ben

Ben said...

Hi Erin,

Yes, you may install the block only (including the crank and pistons). However, the 4G15 carb is slightly bigger internally.


Ben

Anonymous said...

Hi Ben,

Great info and response from you, wish we had more otai joining in.

Btw, for mild to medium mod, u recommend 2" exhaust system. What about dual system (2 holes)? Will it give the same performance?

Thanks!

Man

Anonymous said...

Hi Ben,

I have s4p engine and my final gear ratio is 4.6 is there any available 4.01 final gear ratio on the market maybe specifically the trnasmission model. Thank ben.

Ben said...

Hi Man,

It is all depends on the vehicles' exhaust need. All engines require some back pressure to operate efficiently. Too much back pressure robs power and raises the temperate of the engine and too little you lose some mid range power and fuel economy.

My recommendation is as long as both exhaust flow are the size, then it will provide same performance.

Ben

Ben said...

Hi,

Sorry that I do not have the information for this gear ratio for now.

Ben

alpha said...

hi ben,

may i ask proton wira svdo EMS400 can be remap?

Ben said...

Hi Alpha,

Yes. However not much mechanics out there know how to tune it and I believe only Proton who knows the trick.

Ben

Anonymous said...

Are all mods automatic transmission friendly? I'm a noob but I wanna learn! :3 help me!

HiHi_Felix said...

Hi

Is it good to use LCP in term of durability. I review quite a lot of problems of it compare to stock.

Where can i find 4g13p iswara A/B LCP? Is quite hard to find trusted dealer outside.

Felix (felix2432303@gmail.com)

Anonymous said...

hi ben,what air filters and cold intakes do to the performence of your car,can u install the intakes kit with the stock exhaust?

madz

Ben said...

Hi,

Yes. All mods are auto friendly.

Ben

Ben said...

Hi Felix,

The durability problem occur for after market LCP is due to a lot of them do not have damper. If my memory serve me right, mythology does produce LCP with damper.

Ben

Ben said...

Hi Madz,

It depends on what you wish for. K&N is always the choice for a lot of others due to better filtration. However I personally preferred HKS. Yes, you can install with stock exhaust but the outcome will not that satisfy compare to with modded exhaust.

Ben

HiHi_Felix said...

So what is a damper for ?

Ben said...

Hi Felix,

It is use to reduce the vibration of the engine, especially when undergoing acceleration.

Ben

kr33ps said...

Dear Ben

I am thinking of getting the Jasma cams for 4G15...however, i've read that the cams does not perfectly seat on the rocker arm seat as per tictac 4G15 blog update...any comments on this?

Ben said...

Hi kr33ps,

It will just affect the overlap timing.

Ben

soloman rajah said...

Hi Ben,

i am using iswara aeroback 1.3. i need ur advise if change 1.6clucth beter or camshaft ? i need upgrade my car pick up.. because i use to travel Genthing higland.
please advise me?

Email:solomanrajah@gmail.com

Anonymous said...

Hi sir Ben,

Wish I have all the luxury of doing any of these upgrades (from your post). Excellent sir!

btw, can I ask one favor sir? I have a problem with my Distributor socket wiring (4G15 EFI). The igniter(?) wirings jaz fell down (broken socket). I cannot connect it right now coz i'm not familiar with the color code combinations.

Can you help me sir by posting a close up of the socket wirings (6 terminals located under or below the distributor).

Thank u so much for the help - Roni from the Philippines

GB

Ben said...

Hi Solo,

I will install camshaft. If you insist to change the clutch set, do remember don't skim too much to get better pickup. It will lose speed momentum during hill climbing.


Ben

soloman rajah said...

hi Ben,

thx for info ben..

another question?

i am using standard 4g13 enjin..i need to get extra power only and long usage also and another will long term usage. what shall i do for that ben.. please advise me.. still new on it.

using iswara aeroback 1.3

Ben said...

Hi Solo,

For better power and long term usage, I advise that you may change your entire exhaust system. This will give you a boost of power and will not harm your car in long term.


Ben

kr33ps said...

Hi Ben

I have always wondered why when i accelerate from a dead stop, i find the car lag before actually move, is there any way around it?

Thanks

Anonymous said...

hye ben,
sorry coz my ques is ou of opic.
imusing 4g91inj manual with 4g63 perdana wiring.
i recently change my piping system 2" from extractor to muffler.
my car loss so much power.
i hope u can recommend the best piping system for mycar. thanks

asam :)

Anonymous said...

hye ben,
sorry coz my ques is ou of opic.
imusing 4g91inj manual with 4g63 perdana wiring.
i recently change my piping system 2" from extractor to muffler.
my car loss so much power.
i hope u can recommend the best piping system for mycar. thanks

asam :)

Ben said...

Hi kr33ps,

Can you try to check your cable which connect to the throttle body?

Ben

Ben said...

Hi Asam,

For a 1.5 DOHC engine, basically it is advisable to use around 1.8" piping size. Without much modification to your engine with bigger exhaust piping size is not recommended.

Ben

KelvinSingh said...

Hi Ben,

Really a awesome post.

I have some questions in regards to my ride.

Its a 2003 Wira Aeroback 1.3L STOCK 4G13 VDO engine.

Below are the upgrades i have done so far,

1. Full Exhaust System (Brandless 1.6Inch) 4-2-1 Extractor, CatCon replaced with Bullet,
2. NGK Iridium Plugs (Stock Cables)
3. Drop In K&N Air Filter (no other modifications on the air intake)
4. GAB HI-LO Suspension
5. Couple of Ultra Racing stuts
6. Throttle Body recently replaced (brand new original proton)

ECU Fully Stock, Fully Untouched

Im interested to further mod the car, having to install the Fuel Pressure Regulator, Lightweight Crankpulley, Clutch Kit, Flywheel, and Performance 4g13 CamShaft.

I would like to remain the as Naturally Aspirated.

My question to yourself is that, any changes that i need to perform on the ECU, possible to just remain it at stock?? Is any of the upgrades im planning to do recommended??

Looking forward for your reply!

Cheers!

Anonymous said...

hi ben,
can i ask u smthing about my 4g13. if im only convert head 4g13cab to 4g15fuel injection head is it okay or is it functioning? with block 4g13cab?

ezra

Mohd Fathurrahman Yahaya said...

Hi Ben,

Nice blog U got here bro,
Do you mind i ask you some question?

Currently I've used 4g13 12V engines. Planned to change gearbox..
Which one should I choose 1.3 or 1.5 GB??Bcoz next plan want to change block 1.5 etc..
Tq for respond.

Ben said...

Hi KelvinSingh,

Yes, it is possible to keep your ECU stock. However in order to fully release the potential of your cam, it is better for you to at least install a piggyback.

Ben

Ben said...

Hi ezra,

Are you talking about changing cab to EFi or just talking about changing the engine head only? If you are talking about the head only, I believe there is not much different compare the 4G15 and 4G13. The only different between 4G15 and 4G13 is the engine block. If you are talking about the whole EFi system, you may remain your 4G13 head and just need to convert the manifold, wiring, ECU to your current engine.


Ben

Ben said...

Hi Yahaya,

My suggestion is you change the block and gearbox together. This will definitely save you cost and time. However if you insist to change GB first, then take the 1.5 GB.

Ben

Anonymous said...

hi Ben
Thank's Ben for the information.
Ezra

Anonymous said...

hi ben. i live in the u.k i have a proton saga triple valve cataliser. do you know the stud pattern? i have been offered peugeot 106 alloys (4x108 pcd, 15 to 20 offset, 65.1 bore). will they fit? thanks tom

Anonymous said...

Hey bro, first of all hats of to u !
ur blog fed me so much info's on auto's !
Too bad recently only found this page !
Thx....
I own a c97 4g15 efi wira aeroback !
Since d stock using a 3 speed at, im planning to change it to mt, n add some of ur mid level modi advice later on !
can u suggest d best mt drivetrain for me to swap ?!
Should i get d stock mt for that engine or u advice any other mt to use wif ur mid level modi performance level ?

nazidasyam said...

Hi ben
i have convert my engine from 4g15p to 4g93t... i want to know about Exhaust System.. i use standard right now.. and i want to upgrade...
can you give some suggestion from extractor to muffler... about size, which bullet, and everything's...
thanks...

nazidasyam said...

hi ben..
i have convert my engine from 4g15p to 4g93t.. i want to know about Exhaust System from extractor to muffler.. now I'm using standard piping.. can u give your suggestion .. thanks

*i buy floor engine

Ben said...

Hi Tom,

The Proton Saga is running on PCD114.3 stud pattern.


Ben

Ben said...

Hi,

If you are going for mild modification, get the original 4G15 gb will do. As it is cheaper and easier to find. Unless you are going for extreme where you are planning for BOT or some other extreme mods.


Ben

Ben said...

Hi Nazidasyam,

May I know do you have any intention to further modify your 4G93T? If you I will suggest go to 2.5 to 3" for the piping. For muffler, I will suggest s-type to avoid any trouble from JPJ/Police. Extractor, you may opt for "banana" extractor and please include a wastegate as well for better response.


Ben

Anonymous said...

Hi ben, nice article..
I have a lancer 4g13 carb with dome shaped pistons, how can I make it go faster on uphill? I wanna smoke some vtecs out there.

Thanks ben! Hope to hear from you!

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