3t-gte information required

[sillycar chick]

Cant seem to find the information I need, so am asking for some help. Maybe if all the right info goes into this thread, I can rename it the "3tgte tech thread" or something, as it seems the sort of info I am after is hard to get hold of.

Firstly: anyone got (and can scan) workshop manuals for this engine?

Secondly - My scenario:
Long story short - my dad has a 3T-GTE and I am on the verge of conning him into swapping me. I am willing to swap him the freshly built hybrid of mine (its really his anyway) for the 3T-GTE - which has a hole in #3 piston

He priced up some forgies a while ago, but I cant really afford them right now. So what I want to know is:

1. How much beating will the stock pistons take? ie whats the max psi? will use FMIC, & it will be in a daily so dont wanna go rebuilding any more often than 2 years
2. Where can I get some 0.5mm oversize piston rings? (I can get stock pistons 0.5mm oversize from toyota, but not rings)
3. Are 2T-G timing chain guides the same as 3T-GTE? (the engine is really difficult to get to atm so cant check yet)

Probably have many more questions to come, but that's the main ones for now.

I have to see firstly if it is pheasable to reco this engine before I go taking it off his hands. I am on a VERY tight budget, and cant afford forgies right now!!! So dont go there, just answer my Qs please!! Believe me if money grew on trees, I would be building another hybrid but go all out on it with turbo etc. At the moment 3T-GTE is the cheaper option until I can do this, but so I can keep driving 51LII with some power in her. (I love the engine in it now, but Im just a power hungry phreak!!)

Thanks peoples

[merc-blue]

Firstly: anyone got (and can scan) workshop manuals for this engine?

Nup cant help with that

1. How much beating will the stock pistons take? ie whats the max psi? will use FMIC, & it will be in a daily so dont wanna go rebuilding any more often than 2 years

15PSI has been run on stock internals

Where can I get some 0.5mm oversize piston rings?

ACL probly do them, cheaper/easyer to get ACL pistons and rigs

Are 2T-G timing chain guides the same as 3T-GTE?

i would say so but not 100% sure

I tell you what, i would stick to a 2TG hybrid as your probly going to need to do more than just replace the piston on that engine, the minimum replace bearings face the block and head check over the internals by the time youve done all this you going to be spending more than its worth seeing as you have already just built a hybrid

[TurboRA28]

Howdy.. I have not the whole workshop manual, but copies of the most important pages with torque settings etc. I can copy these for you. I think its almost the whole block & head assembly.

1. I've always heard around 13 - 14psi on a safe tune they are happy with.
2. I used Nissan RB30 rings which were .5mm oversized on my forged pistons. Not sure if these fit the factory toyota pistons though.
3. Unsure sorry.

[merc-blue]

if your willing to wait a fortnight i can scan a full manual for it

[sillycar chick]

if your willing to wait a fortnight i can scan a full manual for it

That would be great, and very much appreciated!! Please do

Atm I am trying to get all the information I need before I decide on what I am going to do. The engine I really want to build is going to be NUTS and cost me a lot more than this engine will. Good news is, my dad might help foot the bill for some of the parts for the 3T-GTE as he may well eventually get the engine back later on anyways.

Also, if 14-15psi has been done on stock internals, how long can it be expected to last?

Everyone's information is much appreciated, opinions are welcome but I really would like the facts as well so I know what the right decision to make is based on all the tech info. there are just a few unknowns with this engine for me that I have to figure out so my judgement isnt clouded.

Thanks

[merc-blue]

no problem im about to build a turboed hybrid with some tweaks so i wanna read through some 3TGTE info aswell,

check this thread aswell
http://www.toymods.net/forums/showthread.php?t=8369

i read somewere that a CT20 cant do much more than 12PSI without creating to much heat, im looking bigger turbo eventualy.

My engine starts with a 2TG/3T hybrid got the 2TGEU head to smaller ports (still plenty big enough) shot peened rods ACL pistons(~ 8:1CR) then a 3TGTE exaust manifold and dump pipe also go quad 47mm throttles custom plenum and intake manifold and a few other "surprises", im abit sad that i cant aford a extra few 100 bux for forgies over cast pistons casue then i could make some serious power

[TurboRA28]

I ran my 3tgte on 14psi, factory ecu, turbo, bottom end etc for probably 20,000km with no problems.

[sillycar chick]

I dont have a factory ECU, so unless I can get one I will have to go aftermarket. Any suggestions on which ones to use? Good value for $?

And I was thinking to go a bit bigger on the turbo after its up and going, and it will have a FMIC of somesort, so shouldnt get too hot.

So if I use aftermarket ECU and non-std turbo, what happens to my piston situation then? Can it still work without constant rebuilds?

[merc-blue]

deffently just make sure its programmed well, and dont over boost the engine

[TurboRA28]

Microtech is good if you are after something cheap.. Or look around at Adaptronic and Megasquirt.

A well sized / matched turbo will be more efficiant at higher boost.

A non standard turbo and aftermarket ecu shouldn't cause any issues with your pistons as long as the tune is done well (no detonation, good mixtures etc) and you don't try and run large amounts of boost.

The 3t-gte stock pistons are not forgiving to detonation, that will be the main killer. Not so much the turbo/boost you run.

Also the factory injectors are only good for 14psi or so.

[merc-blue]

Joel, i have heard from a mate that microtechs have a low refresh rate/larger program steps which makes them feel abit jumpy, is that correct? casue i want to get a microtech for my engine

[TurboRA28]

Im not really sure.. But it seemed microtech used to have a bit of a bad rep .. But lately their products seem to have improved a lot.

I recently installed one on a 4agze and it runs nicely. They have the laptop interface now also which makes tuning a lot easier.

Their base maps seem pretty good also to get you to a tuner.

[lilcrash]

sillycar chick- i recomend that u wait til after the 5th, i will let u put my 3tgte ta22 down the strip if u want to see if its what your after, it will be tuned before then so it should be all sweet. but in my opinion a nicely setup na feels better in the ta22.

laterdays

[sillycar chick]

Yeah, you do have a point as I havent ever driven a 3TGTE, but the power you can get out of them is pretty good. I have a 4WD for my daily if I wanna play around with 51LII, or if I end up with a fast car not suitable for to-and-from work driving.

I am after some serious power, and the reality is, despite the cons of the old na engines, you still cant go past turbos and computers to increase your power, and that's really what I want in the long run... POOOWWAAAHHH!!!

[sillycar chick]

And my next question:

Pros and cons of:

Twin spark 3T-GTE head VS Single Spark 2T-G head

Lets just ignore the fact that replacing 8 instead of 4 plugs costs more money etc.
I am assuming twin spark means better igniting of the fuel? What else??