Converting A 4age To 4agte  

Rancher

I hate people who call it a "4AGTE"... there is no such thing. In your case it would still be a 4AGE. Take the supercharger off a 4AGZE and it will still be a 4AGZE...

Anyway, Google it. Or search on this site. There are heaps of turbo's to suit this small capacty engine, and even more manifolds to suit. Google it like I said.

obrim

Your going to get about a million people telling you that its quicker, easier and cheaper to turbo a 4AGZE. Already low comp and stronger.

The lesson is, dont turbo your 4AGE turbo a 4AGZE!

JoyRid3r_ONB45

WOW hate is a strong word dude, the reason people put the T in it is because its toyota code for turbo. but whatever, call it what you like but at least you know what i'm talking about.



its easy to lower compression, but what parts are stronger?
why would i go and buy a 4AGZE, fit it and then turbo it. seems kinda stupid when i could just put a different pulley on the 4AGZE engine to get more boost.

i have a 4AGE already fitted to a car so it'd be sooo much easier to turbo that instead of spending 3K to buy a motor that i'm only going to use half of.

JayJay

actually there is no point to turboing a 4age, they are alot less likely to handle a turbo and pretty expensive to make sure it can handle it.

a 4agze is already capable of handling the boost with forged internals, n/a model is not equip with that. 4agze can handle roughly 16 pound of boost where as the 4age could probably only handle about five pund before you have to start strengthening the top and bottom end of the motor. in conclusion, in the long run the 4agze is cheaper to buy and turbo/bigger pulley than turboing the 4age.

SecaSX

i can tell you kno, that if it is a smallport (100Kw) version of the 4AGE than the bottom end is IDENTICAL to the GZE, except for the low compression forgies that come standard in the GZE.

as for sticking a turbo onto the GE. has been done many itmes before.

many people prefer to go with the GZE at first, then do what has been said and turbo that.

another route would be just buy some pistons out of a GZE. then you essentially have a GZE bottome end. only difference is the GZE has oil squirters for the conrods, where as the GE doesnt. this is no biggie, they are not needed, but is better to have them.

GZE in standard form are capable of handling upto about 20psi boost, with stock ECU and fuel system.

a few people out there are using a tD04L turbo ofa WRX with great success. i BELIEVE the actuator pressure on them is 8psi. so if you only ran low boost with the internal wastegate, it would be good fun to drive.

maybe look into a turbo off a S15 SR20 or somehtign like htat. i think it would be a good match.

if you plan on turboing the GE, you will need to get the GZE driveshafts for that extra peice of mind, as i doubtthe GE ones would be able o handle the surge of power.

its FAR from cheap to do this conversion, however theere is PLENTY of info out there.

check out www.twincam.org very technical based site. lots and lots of GTE's in there.

basically. it would be MUCH cheaper and easier in the long run to start with a GZE, then work from there. IF your going for big power (you wont be makign much more than about 150fwkw wihout major mods)

if your just looking for some fun turbo action, in a compact package, and you dont care about having MASSIVE power, you only want it purely for the fun aspect, then i say pick up some GZE forgies, and slap them in. get yourself some 4AGE bigport cams, out of the AE82 model 4AGE (begger lift/durration) and then use a smaller turbo that willspool up nice and quickly, but still be able to hold full boost right out through hte rev range.

off topic, got any pics of your rolla?

TwinCam16

^^^ 100% correct!

I find it sooooooooooooooo fucking funny when people say dont use the 4age to turbo it, when all small port 4ag (7 rib block) have the IDENTICAL internals (bar pistons), shit, some 4agze's dont have forged internals anyway. (old 3 rib)

A freidnd of mine turbod his 100kw 4age motor, and there is no problems, runs big boost in it, you have to remember, toyota are the over engineering specialists

SecaSX

^^ atleast SOMEONE knows what they are talkign about mate congrats.

and yes, you would be correct in saying they are iddentical, EXCEPT for as i have said, the GZE's had oil squirters in them. i am not 100% certain abotu the earl models not having forgies. i cant imagine them NOT being forgies, cos wouldnt they then have higher compression, which would be unsuitable for the S/C?

also, another thing i find funny, is when people say they want to turbo their 20V, and they want to use a GZE block.. LOLLLLL its the same. so they spend 1k buying a GZE block, which is what they have anyways hahaha

good luck with the turbo mate. if you have any problems, feel free to ask us mate. im sure many people here (including myself) would be willing to lend a bit of knowledge if you get stuck

Cheers
Nathan

TwinCam16

The early gze's ie mr2, did not have forged internals at all, piss weak motors just had low comp to allow boost.

The small port 7 rib 4age's also have the oil squirters to cool the pistons, i have pulled many of them down.

What is amusing is when people say they want to use a black top to turbo over a silver top...

SecaSX

loll yeah.. blacktop turbo over silver top :rolls: haha best of luck

i knew the MR2 bigport GZE's where piss weak (well, when compared to the otehr GZE's) but i didnt realise they didnt have forgies you learn something every day

i had a mate who had a bigport AW11 MR2 AFM GZE in his AE82, and even though it didnt make much power, in such a light car, it FLEW.

TwinCam16

Your mates motor would be the non forged one too

JoyRid3r_ONB45

wow you 2 know your rollas. thank you very much for the info. my car is an AE93. been told theyre a pretty capable type of mota for mods and stuff but was also told they were all forged and that you could just about bolt up a turbo and play with compression and computer etc. the reason i was askin if it was capable of adding a turbo to it was that the engine/trans is the last thing thats stock. my car is for sale as i need a bigger car(link in sig). but it appears everyone wants a 'turbo' car. so i figured if the conversion was cheap enough, i'll hang onto it and sell it at a later date. got prices on a 4AGZE cut. it was $2800 unfitted, prolly only because they go into sprinters. no thanks.
i'll get some prices and weigh it all up and see if thats the road i wanna take, cheers

TwinCam16

Ok, hold up a second, NO sprinter cam with a 4agze!

And you should be paying no more than 1500 for a full front cut anyway.

If yours is an AE93 then you have the forged late model small port 7 rib motor that is the same as a 4agze, just not low compresion.

You dont have to lower your compresion to run a turbo, those days are long gone.

JoyRid3r_ONB45

i know the sprinters didnt come with a 4AGZE. i meant that people are putting them in sprinters instead of 4AC or whatever they were. so your saying for a real basic turbo application i'd need turbo, manifold and computer and thats it(for a really basic setup)?

SecaSX

i didnt know my motor (smallport) had forgies... how certain are you of this?? i know you can get high comp forgies, but i didnt know we had them

and no, for a REALLY basic turbo, you need turbo, and manifold. THATS IT

the guy i know that had the afore mentioned GZE AE82, has a mate (getting a bit distant in ym relations ) who apprently is running a stock SX hatch, with the stock GE, with literly, a turbo bolted onto the side, and running low boost, only 5-6psi, with stock ECU, computer and fuel pump/injecors. apparently it runs fine, but he cant push it heaps hard, for obvious reasons.

however, if your going to do it, do it right.

and also, TwinCam16.. i dont know where yo ucan get a GZE half cut for 1500.. but if oyu se it, snap it up. they are usually going for about 3k on average. they are getting rare now member

you two guys, add me on MSN if you want to discuss it at all..

[email protected]

Cheers
Nathan

TwinCam16

I will lay money on your motor being forged

If you bolt on the turbo to the existing setup, you will need a map sensor that can handle boost (ie map gze sensor) and then run a emanage on it to tune it to suit boost.

Alternativly, if you can track down a GZE loom and ecu, run that, thats what my mate did, went very well.

SecaSX

here is a Q for you.. is the smallport map or AFM? may seem stupid and obvious, but i dont know.

TwinCam16

Thats not a good way to tell.

99% of the ae92/3's are all map.

The easy way to tell if its small port, look on the top of the inlet manifold, if there is no tvis logo, then you have a small port.

JoyRid3r_ONB45

but would it be better if i did? because if i had to take the head off i'd get it all tested which might benefit me

SecaSX

i think i may have not explained my post well enuff

haha yeah i know the diff between small and bigport etc. and mine is smallport (in a SX seca, with 60 000 ORIGINAL kms )

what i was trying to ask is was the smallport made as AFM or MAP. but then you ansewred that, as you sai dMOST are MAP.

since im still learning, do oy uneed to have MAP for Turbo/SuperCharge, or do you need AFM, or is either fine