4G92 MIVEC First Generation Differentiation

From the previous post, I have posted the information about the 4G63T from the Mitsubishi Galant VR-4. So here is another famous engine that...

From the previous post, I have posted the information about the 4G63T from the Mitsubishi Galant VR-4. So here is another famous engine that most of the car enthusiasts would like to fit to their engine bay. What I am saying is the 4G92 MIVEC 1.6L engine. It is the first generation of the MIVEC system from Mitsubishi where they fitted to the Lancer, Cyborg R and Mirage Asti.

There are three types of engine specification throughout the entire life of the Mitsubishi MIVEC 4G92 first generation engine. There are the normal version MIVEC 170hp known as the silvertop, MIVEC-MD 170hp and the MIVEC RS 175hp(Rally Spec)also known as the blacktop.

I do not want to talk much about the normal version MIVEC since I believe you will be more familiar than me. So let us talk about the MIVEC-MD. MD stand for Modulated Displacement, a form of variable displacement. Under a light throttle load, the intake and exhaust valves in two of the cylinders would remain closed, and the reduced pumping losses gave a claimed 10–20 percent improvement in fuel economy. Unfortunately, the Modulated Displacement was dropped around 1996.

So what is so special about the MIVEC RS as known as Rally Spec? The power of the engine is rated at 175hp at the flywheel and here are some of the specification of the MIVEC RS.

RS version has:
Titanium valves
Different cam profiles
Different air intake
40kg weight reduction
Heavy duty gearbox output shaft
Heavy duty clutch linings
Different 5th gear ratio
Lightened flywheel
Quick shifter
Strengthened lower suspension arms, front and back, with heavy duty bushes
Reinforcing plates on trailing arms to increase camber rigidity
High ratio steering rack (2.9 vs 3.1)
Increased steering pump flow with cooler
Larger proportioning valve in brake master cylinder
Modified fuel tank reservoir outlet to reduce surge
Double accelerator return springs
Water cooled oil cooler
50mm extractors
High flow catalytic converter & low pressure muffler
Thinner glass
No central door locking
Manual windows
Manual door mirrors
No rear wiper
No clock
One speed intermitent wipers
Air conditioning as an option
30mm less ground clearance
Stiffer shock settings
Front 15 inch 2 pot ventilated disc brake option
Helical LSD option
Choice of about 4 different computers
White only body with black mirrors
Extra body spot welds
Different centre console
Flame resistant interior
No boot carpet
No underseal

There are few different kind of ECU being used by MIVEC as well.
Mivec Silvertop (Normal version) ecu - 4828
Mivec Blacktop (RS version) ecu - 7035
Mivec SSilvertop MD ecu - 4829
Mivec Blacktop MD ecu - 7036
Mivec Japan Ralliart ecu - 2910
Mivec Hongkong Ralliart ecu - 2264

Hope this information will help those who wish to convert their engine to MIVEC 4G92 first generation.


  1. Hei bro...ur from around penang rite>>
    just wanna check out if u know how or where to get a mivec h/cut as its very hard get 1. tats 1 of the reason i'm opting to go for 4g93 if i cant get 1 soon.

  2. Hi Dinesh,

    Yes, I am staying in Penang. I don't think any MIVEC halfcut laying around in Penang halfcut shop. Try to get it in BM or S.Petani. (If you need 1, I can give you contact).


  3. Hi Ben,

    i would appreciate if u can give me the contacts. i know mivec is pricey,,but how much of a cost do u think i need to spend for the mod>

  4. Hi Dinesh,

    Do you mind to leave your email here? So that I can send you the contact.

    For the cost:-
    1. MIVEC halfcut is around 8.5k-9k
    2. Installation is around 1k-1.5k (depends on workshop, I can intro you a cheaper :D)
    3. Wear& Tear parts is around 500-1k (depends on the halfcut condition)
    4. Overhaul the engine is around 1k-2k (depends on the halfcut condition)

    So it is good for you to prepare about 13k-15k for the convertion.

  5. Hi Ben,
    thanks a lot man for the detailed breakdown of a conversion.
    liked the item#2 of the cost part though...he..he..he..(wish it will be true)
    here;s my e add - dneshk@gmail.com
    pls drop me further details regarding our discussion.
    thanks again...


  6. Hi Dinesh,

    Welcome. For the item#2, yes it is true.
    Anyway, any details you may like to know?


  7. Hi Ben,
    i'm still waiting for ur reply to my mail regarding the contacts which u wanted to pass to me. from there we'll see where it goes>
    thanks bro,,


  8. Hi Dinesh,

    I sent you a mail with the contact of the halfcut shop.


  9. Hi Ben,
    just talked to the shinkansen auto part ppl...n do u believe MIVEC engines prices has skyrocketed above 10k. i think its out my league man. with the rumours of government goin to stop all used parts import soon..i guess i'll never get a good bargain for this engine anymore. now im opting to go 4g93 n the shop say they only have SOCH engine. any advice u wanna give to a frustrated me..:)

  10. Hi Dinesh,

    10k for a MIVEC halfcut is insane. You can get an Evo3 engine at this price. 4G93 SOHC is quite ok. And you can always change to DOHC by swapping the head when you have extra budget.


  11. hi Ben,

    so its possible to swap between SOCH to DOCH head ehh.tats good news. all i need now is go for engine hunting again(before the season closes)..he..he..
    thanks man for the advice>


  12. Hi Dinesh,

    Yes. You can convert to DOHC. Either from 4G92/93. You may opt for 4F91, but there is a little problem for the valve clearance issue where the gap of the valve is quite different for the 4G93 pistons.


  13. hey ben.enjoy reading your blog.

    nowadays people like to convert their 4g93 to mivec 1.8 or original mivec 1.6 to mivec 1.8.

    i'll glad if u can post on mivec 1.8 conversion..really looking forward.




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BEN9166: 4G92 MIVEC First Generation Differentiation
4G92 MIVEC First Generation Differentiation
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