Ae92 100kw 4age To 4agze

[Rola Drifter]

hey all, i have an ae92 imported 100kw (7rib block) 4age in my ae71 and am wanting to make it a 4agze. just seeing if this might be cheaper than doing another conversion to the 4agze and what could be involved....what i am wondering is

 

1. would i be able to bolt the sc12 supercharger onto the engine and just replace the stock 4age ecu with an ae92 4agze ecu? (will the same wiring loom be able to be used again from the stock 4age)??

2. would i need to rebuild the engine with 4agze internals or would i be able to just leave the stock internals????

 

I'm sure there would be some other things involved so if anyone has any info that would be found useful please feel free to have an input....

 

cheers tom

 

p.s sorry if this is in the wrong section

Edited July 5, 2007 by Rola Drifter

[Des]

Small port and Gze computers have different plugs, I think. 4age wiring wont be able to be used as the supercharger uses a trigger from the ECU and 4age wiring doesn't have that wiring unless you run it all the time. Use the 4agze loom and ECU.

 

You will need to cut a corner off the supercharger mount as it uses the same bolt as the drivers side engine mount.

 

I dunno how a stock small port will like 8-10 psi.

[andro0o]

The small port will buckle under the load, just stick a gze in, its less screwing around.

[Des]

The small ports have the same bottom end as the GZE so i think the only problem you will have in that area is detonation, Maybe go Micro tech or something instead of the GZE computer.

[Jono]

the guy who tuned my haltech says the smallport would easily cope with 10psi if tuned correctly, even with standard compression. hey, the new turbo audis run high compression and don't have factory forged pistons...

[Rollaboy2608]

you're injectors and fuel system will not cope with the added strain that boost places on the motor. Additionally, the GZE comes with semi forged pistons. You would also need all the induction piping etc. Simply adding aftermarket computer will not make up for the fact that your GE injectors can only flow a max rate no matter how much you tune it. once the GZE is in your engine bay the possibilities are virtually endless, unlike the GE

[Des]

No the induction piping is not needed and it is better to keep the 4age manifold and cut and shut it, GE manifolds flow better than GZE items.

[beerhead]

Smallports will take 8 psi stock on an aftermarket. Pistons are really quite strong in a smallport, only difference in the real world is the compression ratio you get. I don't know why your raving about injectors not flowing enough, They are bolt on! If your cheap get an adjustable fuel pressure regulator, you can get 30 % better flow there, taking you to about 200HP on stock injectors. You can get a selection of different injectors of oodles of toyota's around - $100 tops.

 

- once the GZE is in your engine bay the possibilities are virtually endless, unlike the GE -

 

This is all opinion, I've seen reliable 3 rib bigports, atmo make better power than most GZE's out there.

Why waste money on a GZE, you already have the tough bottom end, go get some nice aftermarket pistons for the motor, re-ring and hone, will be a better motor than a 100K import GZE anyday.

 

you're injectors and fuel system will not cope with the added strain that boost places on the motor. Additionally, the GZE comes with semi forged pistons. You would also need all the induction piping etc. Simply adding aftermarket computer will not make up for the fact that your GE injectors can only flow a max rate no matter how much you tune it. once the GZE is in your engine bay the possibilities are virtually endless, unlike the GE

[Rollaboy2608]

Smallports will take 8 psi stock on an aftermarket. Pistons are really quite strong in a smallport, only difference in the real world is the compression ratio you get. I don't know why your raving about injectors not flowing enough, They are bolt on! If your cheap get an adjustable fuel pressure regulator, you can get 30 % better flow there, taking you to about 200HP on stock injectors. You can get a selection of different injectors of oodles of toyota's around - $100 tops.

 

- once the GZE is in your engine bay the possibilities are virtually endless, unlike the GE -

 

This is all opinion, I've seen reliable 3 rib bigports, atmo make better power than most GZE's out there.

Why waste money on a GZE, you already have the tough bottom end, go get some nice aftermarket pistons for the motor, re-ring and hone, will be a better motor than a 100K import GZE anyday.

I must disagree there beerhead with a GZE you don't need to go and buy pistons etc or new injectors and all the other stuff. Thats alot of effort to go to when you can easily in half a day drop the GZE motor in with the factory computer and you can just drive away. I've done this conversion many many times as I used to work at a well known sydney performance workshop who specialised in this particular swap and the things are just bullet proof unlike the 4AGE which I actually owned at one stage. And by the way an adjustable fuel pressure reg is NOT the be all and end all to your fueling problems

[beerhead]

This topic has come up a few times on Rollaclub. It all ends up to whether you want the quick fix of the half cut, or have the time to pull the whole thing to bits and build it up from scratch. He already has a 7 Rib bottom end, and the tough crank, its a good starting point if you want a fresh motor. It's a fact that a fresh motor will go harder than an import one.

 

If your motor has low K's you may not even need to grind the journals! Quick hone, pop the gudgeon pins and fit the new pistons.

GZE low comp Pistons $380

Bearings $200

Labour $300 - 500

Gasket kit $180

SC14 $300

Aftermarket ECU & Loom $ 1000

7MGTE injectors $100

$2680

 

I don't know how much you get GZE Half cuts for, but there around the $2000 mark in QLD.

 

We both know how often import motors from Japan have had there oil changed, would you prefer a fresh motor or a 100,000km motor that's had 2 oil changes in its life? A lot of people are hesitant to rebuild a motor, getting an import motor is a quick solution, but it may not always be the best one.

[Rollaboy2608]

I will say beerhead that I do agree in part with what you are saying. A fresh motor is indeed a better option than an import motor, although another thing to think about is that just about every guy that has ever built a big horsepower turbo motor based on these engines will always start with the GZE block. Not necessarily saying that a GE wouldnt cope but the GZE is tried and true. I once had a customer who was heavily involved with Toyota who had over 400hp from a turboed GZE with very few problems apart from fueling(the weakest link in his system). I also agree that a heavily worked GE is a fantastic motor,but even better is the 7A-fe block with a GE head....