2tgte and 3tgte...how much power have they got???

[GeneSPIDA]

If you want to have a look at the dyno graph of mine on it's latest run:

Dyno Graph 168.9HP 2TGEU Turbo

[rke_011]

Well id be happy to have more power out of my 3tgte.. i got a stock tt142 just with rx7 cooler and exaust... got it dynoed the other day and 88rwkw they say i need bigger injectors and pump so i can run more boost.... i also would love some advice.....

[jfallen]

I think you'll need a compression test. oh and if that's all good; religate that piece of junk Iron they call a CT20 to SIMS metal, buy a T28 of an SR20. They're cheap and will make up to 185kW, if you know what you're about, so there's plently of room here. they are also a well sized turbo, and have good spool up charastics. Also this is a popular upgrade for CA18DET owners because it beats the pants off a T25. The celica I've just bought has had this done and in the interest of seeing what it's capable of I mapped it:


for a 3T-GTE move the red lines slightly to the left, but otherwise it's a good representation of what the turbo is capable of (green lines are at 15, 20 and 25PSi of boost) This would be a really good turbo for a 3TGTE is you could get your 3T to hold 20PSI and rev limit it to 8000.

just for completeness: as RPM increases Volumetric efficiency decreases (not always the case but for stock motors this is true) and as such the RPM line should be stacked slightly closer in the upper RPM region (towards 9000 in this case As that's where I est my max RPM to be.) Unfortunatly the spreedsheet I've written is based on a linear model which modles peak power very well. Not a cubic model (because I can't find the correct equations) which models overall power much better. That said the model appears to be accurate with peak power figures.

as for the injector question that has been running in tandem with this thread, some of hte top feed injectors (series 5 RX7 for example) have a slightly different plug for the electronics. other than that they all fit right in.

[rke_011]

if i up the boost with standard injectors and fuel pump it leans out.
what would be a good upgrade? any recomendations on pump and injectors?"
VL pump? what injectors? will i need a regulator?
and are ct26 turbos any good i heard that they are quite easy to fit.. which is what i need because its my daily driver..

[jfallen]

The VL turbo pump is a Bosh unit, can't remember which one, but it'll flow enough. Shouldn't need a regulator, RX7 injectors (because they're cheap, 550cc.) CT26 off a supra would be the go, not one off a GT4, (the one off the MA70's 7MGTE doesn't have a twin entry exhaust flange, thus less stuffing about.) That said a T28 is cheaper off an SR20 is cheaper.

the great thing about the 3TGTE is that there are plently of areas where gains are possible, lets not forget that it was more or less the same motor in race trim that TTE was gettign 500+HP out of in the early 80's. the only problem being that most of these mods to get these gains will cost a few dollars.

What I'd do:
T28 $300
RX7 injectors $250-300 (might get lucky and get them cheaper)
new exhaust manifold ~$500, maybe less maybe more
FMIC revision $200
Microtec $see you nearest friend from the middle east, or troll the rotary forums

look for 150kw at 15-18ps of boost around 7500-8000RPM

Rememebr it's all going to cost $$$

Cheers
Jordan

[TheToyman75]

The VL turbo pump is a Bosh unit, can't remember which one, but it'll flow enough. Shouldn't need a regulator, RX7 injectors (because they're cheap, 550cc.) CT26 off a supra would be the go, not one off a GT4, (the one off the MA70's 7MGTE doesn't have a twin entry exhaust flange, thus less stuffing about.) That said a T28 is cheaper off an SR20 is cheaper.

the great thing about the 3TGTE is that there are plently of areas where gains are possible, lets not forget that it was more or less the same motor in race trim that TTE was gettign 500+HP out of in the early 80's. the only problem being that most of these mods to get these gains will cost a few dollars.

What I'd do:
T28 $300
RX7 injectors $250-300 (might get lucky and get them cheaper)
new exhaust manifold ~$500, maybe less maybe more
FMIC revision $200
Microtec $see you nearest friend from the middle east, or troll the rotary forums

look for 150kw at 15-18ps of boost around 7500-8000RPM

Rememebr it's all going to cost $$$

Cheers
Jordan

RKE-011

The last thing you want is a Microtech from a Rotary. Microtec's are built to suit a particular ingition & engine type. A rotors Microtech wont run a 4 banger. By all means get a Microtec if you want an entry level ECU, mind you a non Autotune Autronic SMC is not allot more and will control your boost. (SO works out cheaper if you add the cost of the Microtec and an electronic boost controller)

If you decide to get bigger injectors the The RX7 injectors are cheap and will fit your rail. There are also the injector equivilence of fire hoses - Ie nasty at idle and light throttle, perosnally i would not use them. If you can grab a set of yellow GTIR pulsar of GTR skyline injectors they are a good quality 550cc and will still be cost effective.

The VL turbo pump is an ok inline pump, a bosch 910 is enough for a medium boost application but if you getting a new pump you may as well get one that will feed your future plans as well a bosch 975 will cater for most application or just get an 044 if you can get one cheap enough.

Do not waste your coin on an afterarket fuel reg. Your stock one is fine.

The rest I covered before but to save reading back through the thread. Fit some good valve springs (Performance Springs RR4's) and up the boost to 14PSI with a good tune. Then if you want more than the CT20 can offer worry about it then. Personally I wouldn't bother with a old tech turbo. I'd get a gt25/28 or a HKS25 series.

[jfallen]

A rotors Microtech wont run a 4 banger.

If you decide to get bigger injectors the The RX7 injectors are cheap and will fit your rail. There are also the injector equivilence of fire hoses - Ie nasty at idle and light throttle, perosnally i would not use them. If you can grab a set of yellow GTIR pulsar of GTR skyline injectors they are a good quality 550cc and will still be cost effective..

1: yes it will, just need to wire it up corectly and tune it. A microtec is a microtec, all that varies is the model number. And you don't need an EBC, a simple $20 bleed valve will control boost just fine.

2: RX7 injectors are just the same as any other 550cc injector, GTR and GTiR injectors are 440cc, thus will give a smoother idle because they can give better atomisation at lower fuel delivery rates. That said they wont have the legs up high (depending on how hard you want to go.

Jordan

[TheToyman75]

1: yes it will, just need to wire it up corectly and tune it. A microtec is a microtec, all that varies is the model number. And you don't need an EBC, a simple $20 bleed valve will control boost just fine.

2: RX7 injectors are just the same as any other 550cc injector,

Jordan

Jordan - Sometimes its better to keep quiet and appear stupid rather than open your mouth and prove it beyond all doubt.

[Bananaman]

By all means get a Microtec if you want an entry level ECU, mind you a non Autotune Autronic SMC is not allot more and will control your boost.

What are these worth roughly?

ed: I'll add that GTiR and GTR injectors are 444cc

[TheToyman75]

Bananaman,

The retail on the Non Autotune SMC kit is $1690. Less for Trade/Toymods members.

Your right, the GTiR injectors are rated at 444cc, they usually flow around 500cc and are quite happy to run at a slightly higfher base pressure getting you up towards the 550cc mark. The Yellow evo lancer injectors are a 510cc item so are also a good option.

For a 3T-GTE you want a single spray injector but you can always just change the pintle cap

[79GT]

great info guys. answers lots of questions wandering round in the back of my head. any more would be greatly appreciated.

cheers.