4AGE 20V to 7AGE 20V conversion

With the introduction of the 7A-FE, the 4A-GE tuners gained an easy option to use the longer stroke 7A-FE block to gain higher stroke figur...


With the introduction of the 7A-FE, the 4A-GE tuners gained an easy option to use the longer stroke 7A-FE block to gain higher stroke figures previously reserved for the daring and the well financed. The 7A-FE made its debut on the more mundane Corolla sedans in 1992. The block design of the 4A was kept thus came the possibility to use the 4A-GE head. The birth of the 7A-GE hybrid.

The characteristic of the 7A-GE is generally more subdued than in the peaky tuned 4A-GE, but for all of the maximum revs lost to the 4A, the 7A makes up in torque. With longer crank stroke, the 7A-GE’s cannot be revved as far due to known failures of connecting rods and bearings. The maximum power band usually falls at as little as 6800rpm, a sign of internal stress, meaning it’s way-past the physical redline. Most tuners recommend its use below 7500rpm. Despite its conversion to the true-twin cam design and free-flow head, the modification still produces all of the 117ft/lbs of torque of the original 7A-FE configuration, and the power gains from the 7A-GE varies but is in the general area of 10% over a similarly equipped 4A-GE.


Note however, that in the 7A-FE, the peak power comes in earlier at around 5700rpm compared to the 6600rpm of the 4A-GE. Because this is a custom application, the figures may vary by individual project. Like the 5A-GE and more so, the 7A-GE is a very universal in drivability and is highly recommended for street machines looking for that little extra push, who see occasional autocross or ET traps. Those looking into more elaborate systems like turbo or high-rpm usage should, however stay with the 4A-GE design for it’s intended sporting nature and previous data and upgrade parts availability. Also, the flywheel attachment of the crankshaft is inherently weak on a 7A-FE so making it rev high or boosting too much power on it is a little bit risky. Having said these, let’s dive into the world of 7A-GE.

Conversion to the 7A-GE hybrid need not be as complicated as the 5A-GE. This is because the block internals need not be torn apart and modified. Starting with a cleaned, adjusted and polished 4A-GE head, it can bolt right onto the 7A-FE block. This process is fairly elementary in nature… There are few differences in peripheral components depending on the engine orientation and the chassis it’s installed in, but all of the components should be readily available from one of the 2 engines you should have on hand the 7A-FE and the 4A-GE.

The problem most people run into in this configuration is the timing belt. Because of the taller block of the 7A, the 4A-GE timing belt proved to be too short for the increased deck height. Why not use a 7A-FE belt? Well, the “FE” design head is a twin cam but is driven by the crank only on one cam. The other cam is driven off the powered cam by gears. A “slave-cam” twin. So what do we do? Traditionally, we had to go hunting in the bin at a parts store or junkyards. But, thanks to the few who visit Club4AG, a Porsche 924/944 has been rumored to fit. For this application, the crank cam-pulley from a 4A-GE has to be used… Obviously, the 7A-FE pulley will not drive the GE cams at the correct speed anyway…

All else being done, the engine should have 1800cc and compression ratio of between 9.8 and 11 depending on which piston and 4A-GE head you used. Most applications use similar ECU and peripherals from the 4A-GE and seem to work quite well despite it’s increase in displacement. 7A-FE ECU is avoided because of it’s low rev-limiter and complexities in placing it in a car originally equipped with a 4A-GE. Perhaps an aftermarket ECU like the “Freedom” is potentially helpful in making it perform at it’s peak output with a particular grade of gasoline.


COMMENTS

Name

2ZZGE,18,360,1,4AGE,24,4G13,9,4G15,8,4G61T,1,4G63T,5,4G64,3,4G91,2,4G92,12,4G93,6,4G93T,13,4G94,2,ABT,2,Acura,1,Acura NSX Type R,1,Adjustable Cam Pulley,2,ANCAP,1,Apexi,1,Arospeed,1,Audi,4,Audi R8,2,Audi R8 GTR,1,Audi RS6,1,Audi TT,1,BBS,1,Bentley,1,Bentley Continental GT BR-10,1,Benz,1,Bike Modification,1,BMW,4,BMW 1 Series,1,BMW 5.0L V10,1,BMW M3 GTS,1,BMW M6,1,Bolt on Turbo,2,Boost Controller,1,Boost Meter,1,Bugatti,1,Bugatti Veyron,1,Cafe Racer,1,Campro Engine,2,Capristo,1,Car Accident,1,Car Detailing,2,Car Info,16,Car Modification,52,Car Repair,1,Car Shots,2,Car Stolen,1,Car Stuffs,32,Carbon Fiber,1,Celica Veilside 2ZZGE,23,Chevrolet,1,Concept Car,2,Crank Shaft,1,D.I.Y,19,Daihasu,3,Daihatsu,9,Daihatsu Ayla,1,Daihatsu Mira,14,Daihatsu Move,2,Daytime Running Light,1,DMC Tuning,1,DRL,1,Duratech,1,EFJL,1,Electric cars,1,Extreme Bodykit,1,Ferrari,7,Ferrari 360,1,Ferrari 360 Challenge,1,Ferrari 458 Italia,2,Ferrari Enzo,1,Ferrari F12 Berlinetta,1,Ferrari F430,1,Ferrari F70,1,Flywheel,1,Ford Mustang,2,Formula Atlantic,1,Formula One,2,Fox Marketing,1,Gallery,6,Gemballa,1,Goodwoord,1,GSR,6,Hella Flush,1,Hennessey Performance,1,Hennessey Venom GT Spyder,1,HKS,1,Honda,17,Honda Beat,1,Honda Bike,2,Honda CB350,1,Honda Civic,6,Honda Civic EK,2,Honda Civic Si,1,Honda Civic Type R,5,Honda CRX,1,Honda EX-5,1,Honda Integra DC5,1,Honda Jazz,1,Honda S660,1,HondaEF8,1,Hybrid cars,2,Hyundai,1,Hyundai i-oniq,1,Indy Car,2,Inifinity,1,Inifinity Emerg-E,1,J's Racing,1,J32,1,Japanese,2,JBJL,3,JDM,1,Kancil L2s/L5,47,Kawashima Celica,1,Kegani Autotech,1,Ken Block,1,Kia,1,Koenigsegg,1,Koenigsegg CCXR,1,L200,3,L200s,4,L2s,4,L502s,2,L700,2,L900,2,Lamborghini,8,Lamborghini Aventador,3,Lamborghini Cabrera,1,Lamborghini Gallardo,3,Lamborghini Urus,1,Lamborghini Veneno,1,Lexus,2,Lexus LF-LC,1,Lexus LFA,1,Lightened Crank Pulley,1,Limousine Toyota Prius,1,Lotus,4,Lotus Elise,2,Lotus Evora,1,Lotus Exige,1,Lumma Design,1,Lumma Design CLR 6M,1,Maintenance,1,Mazda,6,Mazda Lantis,1,Mazda MX-5,1,Mazda MX-5 GT,1,Mazda RX-7,2,Mazda RX-8,1,Mazda RX-8 SPIRIT,1,McLaren,1,McLaren P1,1,Mercedes,1,Mercedes C63 AMG Black Series,1,Mirage,2,Mirage Cyborg,4,Mitsubishi,25,Mitsubishi Colt,2,Mitsubishi FTO,1,Mitsubishi i-MiEV,1,Mitsubishi Lancer,1,Mitsubishi Lancer Evolution,4,Mitsubishi Mirage,3,Mitsubishi Mirage Asti,1,MIVEC,10,Monkey Wrench Racing,1,Mugen,2,My Project Celica,3,My Project Kancil,1,My Project Satria,7,News,72,NISMO,2,Nissan,14,Nissan GTR30,1,Nissan GTR35,4,Nissan Juke R,1,Nissan Latio,1,Nissan Skyline GT-R (KGC10),1,Nissan Skyline GT-R (KPGC110),1,nissan skyline GT-R 33,1,Nissan Skyline GTR-34,3,Old School Car Retro,1,Others,1,Performance Parts,1,Perodua,16,Perodua Alza,3,Perodua Axia,1,Perodua Kancil,13,Perodua Kelisa,1,Perodua Kenari,1,Perodua Myvi,5,Pimp my ride,1,Police Car,1,Polo Sedan PQ25,2,Porsche,9,Porsche 911,2,Porsche 911 GT3 RS 4.0,2,Porsche Cayenne 958,1,Porsche Cayman,2,Porsche Gemballa Mirage,1,Prior Design,1,Project car,1,Project Cars,91,Proton,58,Proton Artiga,2,Proton Exora,5,Proton Exora Bold,1,Proton Exora Prime,1,Proton Exora Turbo,3,Proton Gen2,2,Proton Inspira,2,Proton Iswara,2,Proton P3-21A,7,Proton Persona,2,Proton Persona R,1,Proton Preve,4,Proton Preve Hatchback,1,Proton Preve Sapphire,1,Proton Putra,1,Proton Saga,6,Proton Saga BLM,3,Proton Saga BLM FLX,1,Proton Saga BLM FLX 1.6,2,Proton Satria,20,Proton Satria GTi,3,Proton Satria GTi R3,1,Proton Satria Neo,6,Proton Satria RWD,1,Proton Wira,1,R3,1,Renault,2,Renault Alpine,1,Renault Clio 4,1,Rocket Bunny,1,RWB,1,S4PE,1,S4PH,1,Satria GSR,22,Scion,1,Scion FR-S,1,Sepang International Circuit,1,Shoft Shifter,1,Shoshinsha,1,Silvertop,1,Spark Plugs,5,Speed Cut,1,SpeedArt,2,Sport Rim,1,Spy Shot,3,SR Auto Group,1,Subaru,2,Supercharged,2,Team Orange,1,TEIN,1,TEQ,1,Torque Converter,1,Toyoda,1,Toyota,50,Toyota Agya,1,Toyota Agya TRD,1,Toyota Avanza,1,Toyota Camry,1,Toyota Celica,21,Toyota Corolla,3,Toyota Corolla BZR Levin,1,Toyota FT-86,1,Toyota LFA Special,1,Toyota MR2,1,Toyota MRS,1,Toyota Prius,1,Toyota TE27,1,Toyota VIOS,2,TRD. Stance,1,Underground Racing,1,Video,12,Volkswagen,3,Volkswagen Jetta,1,Volkswagen Polo,1,Volvo,1,Vorsteiner,1,VR-4,1,VVTL-i,2,Wakaba,1,Works,1,XXX-Performance,1,ZZT231,7,
ltr
item
BEN9166: 4AGE 20V to 7AGE 20V conversion
4AGE 20V to 7AGE 20V conversion
http://2.bp.blogspot.com/_WnxU5DbZvnk/S9rtfB4tWgI/AAAAAAAAAa8/9N3xmAtwADM/s400/4AGE+20V+to+7AGE+20V+conversion+001.jpg
http://2.bp.blogspot.com/_WnxU5DbZvnk/S9rtfB4tWgI/AAAAAAAAAa8/9N3xmAtwADM/s72-c/4AGE+20V+to+7AGE+20V+conversion+001.jpg
BEN9166
https://www.ben9166.com/2010/04/4age-20v-to-7age-20v-conversion.html
https://www.ben9166.com/
https://www.ben9166.com/
https://www.ben9166.com/2010/04/4age-20v-to-7age-20v-conversion.html
true
3838972938447187754
UTF-8
Loaded All Posts Not found any posts VIEW ALL Readmore Reply Cancel reply Delete By Home PAGES POSTS View All RECOMMENDED FOR YOU LABEL ARCHIVE SEARCH ALL POSTS Not found any post match with your request Back Home Sunday Monday Tuesday Wednesday Thursday Friday Saturday Sun Mon Tue Wed Thu Fri Sat January February March April May June July August September October November December Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec just now 1 minute ago $$1$$ minutes ago 1 hour ago $$1$$ hours ago Yesterday $$1$$ days ago $$1$$ weeks ago more than 5 weeks ago Followers Follow THIS PREMIUM CONTENT IS LOCKED STEP 1: Share. STEP 2: Click the link you shared to unlock Copy All Code Select All Code All codes were copied to your clipboard Can not copy the codes / texts, please press [CTRL]+[C] (or CMD+C with Mac) to copy