4age upgrade to 7age..

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turbo10

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Dec 11, 2003
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sg petani kedah
i got code 52 (KNK problem) and i checked confirmed my knock sensor broken..it can run but in limp mode or safety mode.u can try if you want hehe.when it detected the knock sensor problem (either no signal, short circuit and etc) it will run on WOT fuel mapping so fuel too damn rich and ignition timing aggressively retarded. the performance becomes sluggish and almost undriveable with that super rich fuel..it is intended to save your engine from further damage. But I cannot tahan so I reduce the fuel pressure a bit and adjust the airflow meter to lean a bit the fuel so that i still can drive jalan-jalan for TT, now it's driveable but still the fuel consumption quite high and performance is out of question for now due to retarded timing..i think saga BLM can eat me for dinner now..jalan2 sudah la..hehe

---------- Post added at 05:06 PM ---------- 6 hour anti-bump limit - Previous post was at 05:04 PM ----------

wooo...
celica ta22...
nice...
really got one dem nice car bro turbo10...
only seen it live in front of my eyes juz once...
a fren of a fren juz bought it n wanted to make it a project car...
thanks bro..it's just an old rust bucket..hehe..just finished major bodywork..still in undercoat flat black..out of money to paint..only go out on weekend nights.:love::driver:
 
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D7zul

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Feb 24, 2011
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Shah Alam
can i put d 7a-ge onto 4a-fe?
actually, there's no 7A-GE from the factory.. there's only 7A-FE..

this i take from Club4ag.com


Toyota Engine code :

C - Equipped with emissions control systems (note: The “C” is not used if the engine was originally equipped for emissions controls.)(The C notation has been associated with California’s (USA), at that time having stricter emission standards)

U - Equipped with emissions control systems for Japan. (The U notation has been associated with the introduction of Unleaded fuel available in Japan at that time)

E - Electronic fuel injection (EFI)

F - Gear coupled cam drive; dual overhead cam (DOHC) engine: timing belt or chain drives one cam, and “scissors” gear drives the other cam. [Narrow included valve angle]. The split “scissors” gear is a unique way to eliminate gear backlash.

G - Dual overhead cam (DOHC) engine: timing belt or chain drives both cams. [Wide included valve angel]

L - Transversely mounted in vehicle

T - Turbocharged

Z - Supercharged





Examples:



4A - SOHC, 8 valves

4A-C - SOHC, 8-valves, equipped with emissions control system

4A-LC - SOHC, 8-valve, transversely mounted, equipped with emissions control system

4A-GE - DOHC, 16-valve, fuel injected

4A-GEC - DOHC, 16-valve, fuel injected, equipped with emissions control system

4A-GELC - DOHC, 16-valve, fuel injected, transversely mounted, equipped with emissions control system

4A-F - DOHC, 16-valve, gear coupled cam drive, carbureted

4A-FE - DOHC, 16-valve, gear coupled cam drive, fuel injected

4A-ELU - DOHC, 16-valve, gear coupled cam drive, fuel injected, transversely mounted, equipped with emissions control system for Japan.

4A-GZE - DOHC, 16-valve, supercharged and fuel injected

---------- Post added at 09:26 AM ---------- 6 hour anti-bump limit - Previous post was at 09:25 AM ----------

i think u can put the whole 7A-FE engine.. a lot less hassle

:wink:
 

JAP_AUTOPARTS

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Nov 5, 2009
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PENANG
4AG Tech Notes

Check the link, it says stay away from 7A_ge??

---------- Post added at 09:55 AM ---------- 6 hour anti-bump limit - Previous post was at 09:47 AM ----------

Stay away from the 7AF to 7AG conversion since the crank is not forged and the flywheel bolts are too small, with no provision available to upgrade. The rods are potential failures also when subjected to real 4AG RPM operation. It is an exercise in creativity but a total sidestep for any real performance-oriented application. If you like the torque of the 7AF, use the complete engine.
 

turbo10

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do it and tune it right, it will last very2 long as long as the normal 4ag goes..especially the cam timing..most of the phailed 7ag project (lost of power after 5-6krpm) due to unable to tune the cam right..
 

D7zul

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Feb 24, 2011
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do it and tune it right, it will last very2 long as long as the normal 4ag goes..especially the cam timing..most of the phailed 7ag project (lost of power after 5-6krpm) due to unable to tune the cam right..
bro.. ur car ok ke?

:biggrin:
 

ahaw

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Apr 1, 2007
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# TS : sorry off topic. asking sifu's, suitable part number for 4age osv o-ring. mine got oil leaking need replacement.

ps ; cant find any in toyodiy.
 

D7zul

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Feb 24, 2011
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Shah Alam
# TS : sorry off topic. asking sifu's, suitable part number for 4age osv o-ring. mine got oil leaking need replacement.

ps ; cant find any in toyodiy.
mayb u can open it & bring it to the sparepart shop..

mix & match :biggrin:
 

LevinTE27

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Nov 16, 2003
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i would say no to 7ag hybrid. i built my very first 7AG Turbo in year 2003, taking 30psi boost with microtech ecu, custom conrod , HKS cams. it run 12.8sec 1/4mile. but it really not as revvy as 4ag. it dont go over 8000rpm.

with the same engine head, i moved it to my AE86... it bounce up to 9500rpm easily. power wise, no much different
 

LevinTE27

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16v head. using 81mm toyota oem 8.0c/r piston.

pic took on 2005 .. any way this car scraped already.. parts moved into a 86 using 4ag block instead

 

aziziell

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May 9, 2007
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my 7age 20v rev till 9000rpm with power band at 8600rpm
using toda 288 cam.used v power fuel