3SGTE turbo upgrade

[punkture]

Okay before i get flamed for going over the past (sorry if digging up old threads) but would like to start a post thats simplified and easy to follow for turbo options for the 3SGTE particuallry in a GT4.

-pretty much list the price overall, and parts required also e.g not just the turbo, the associated lines etc, injectors if needed. and its use e.g power versus response

-if possible a review of the turbo too. this way hopefully if someone in a similar situation like mine can easily follow it and not have to follow a trail of ancient posts and price listings Thanks

[jonathan yee]

there's some common info here. it's a bit hard to list all required upgrades for turbo conv's etc. as it greatly depends on how far someone goes with supporting mods. in all honesty esp with the gen2 motors any decent upgrade in turbo should be coupled with at least gen3 injectors(550cc) better fuel supply(bored/dual feed for gen2 rails) and a more competent ecu as the AFM/gen2 ecu is very restrictive and far from ideal.

also how much power you'll make will also depend on IC system, whether eng is stock etc or cams and other goodies are installed.

have a look at the S series dyno thread. there's some useful info there.

http://www.alltrac.net/tuning/turbo.html

[punkture]

yeah cheers, just wanted a rough thread e.g CT26 Highflowed rough price $1400; needs ...to support it etc. but yeah on the right track =)

[jonathan yee]

well, hiflowed ct26 is about $1200 and requires no supporting mods, but obviously a decent dump/exhaust system is a given. the ATS version i think is generally considered the best hiflow version as they do a bit of cnc'ing to the exhaust housing. still limited to about 300hp tho.

hiflow's are generally laggy, max boost by 4000rpm. good for 18/20psi.

[MWP]

My CT26 was hiflowed by ATS.
By no means is it laggy, i get max boost by around 3000rpm.

Im pushing 18psi with it, though it does drop off at the top end.
It could go a bit further, but im out of fuel.

[punkture]

well, hiflowed ct26 is about $1200 and requires no supporting mods, but obviously a decent dump/exhaust system is a given. the ATS version i think is generally considered the best hiflow version as they do a bit of cnc'ing to the exhaust housing. still limited to about 300hp tho.

hiflow's are generally laggy, max boost by 4000rpm. good for 18/20psi.

exactly the kind of info =) yeah didn't think it'd be laggy being still similar size and only 300hp but i guess its what your tuning is at e.g rich etc..mark you may have to take me for that demonstration..haha. definitely thinking the ct26 highflow is a much more viable option, has anyone on here gone down the swap process of the garrets etc?

[jonathan yee]

well as i said the ATS is the supposed best of the hiflow's. any local version's i've come across mine included have a 50mmtrim wheel and full boost reached by 4000rpm, mine started spooling alot earlier but the kick didnt come till 4000 as does many others. the ATS ct27 isn't very common over here.

with stock cam's i'd notice fall off after 6000rpm. i was only running 16PSI but when i installed the gen2 NA cam's (which made a diff.) i didn't have any fall off in the top end.

[jonathan yee]

and as always there a various specs to high flows. some with bigger/laggier comp wheels and clipped turbines for more top end, but less response

[MWP]

Mine isnt a big hiflow.
Not sure what size the comp wheel is, but i have seen larger in a CT26.
My exhaust wheel hasnt been clipped either which explains the quick spool, lots of mid range torque and lack of power at the top.

[punkture]

lack of power isnt a bad thing with these cars, im fair sure they were designed by toyota originally to be quick responding engines and handling, explains the engine orientation in the bay and the choice of forced induction. similar to wrx's i guess, not like nissan dyno machines =p

[mattysshop]

i'm not sure if your talking about AWD or FWD my experience is limited to a couple of FF 3sgte's i've played with over the years..

GT28R, custom steam pipe manifold, twindrop dump pipe (helps boost massivley verses a large open dump pipe), need to redo water and oil feed lines (pretty easy)

starts spooling at 1800rpm, full 14psi available from about 2400rpm (but useable boost 4-6psi at 2000rpm), top end/response/midrage is alot better than the hiflowed (t3/4 steel wheels) it replaced, currently 250fwhp but injectors are limiting that.. it is a VERY nice setup to drive on the street... 5th gear up hills at 55-60km/h is not a problem, this 3SGTE is even running slightly lower compression than stock (forged pistons) and a 600x300x100 cooler on the front..

IMHO i would go just one step bigger and get the GT28RS that should see you to almost 300fwhp (as long as you have the fueling to support it, that would give the best compromise between response and flow.. any bigger and your trading off a bit of bottom end and streetability.. some of it comes down to what manifold your using, how it's designed, tapered merge collector, pipe dia, external gate/internal gate, dump pipe design each of these make a couple hundred rpm difference in the way it comes on boost etc etc

having said that i belive with a proper merge collector and good manifold design the GT3071R were planning won't be a pig like some of the GT30 3sgte's getting around are..

[punkture]

awesome, so a custom manifold is defiantely needed than? if you take it to a bare minimum, i.e just the needed manifold, turbo charger itself, water lines etc, whats the rough price

[mattysshop]

depends where you go.. some places $1000 can get you an awsome manifold, all tig welded, ported merge collector, made from steam pipe with a lifetime warrenty against cracking.. and then there are those who charge almost as much to do a half arsed job..

a custom manifold should be mandatory for any sort of power gains and turbo changes.. even the mitsubishi evo boys who will do absolutley EVERYTHING to thier engines possible, yet still retain the stock cast manifold, once they change that manifold to a good one with a good merge collector they swear they would never go back..

it just depends on your budget..

to change a turbo is one thing.. with various adaptor plates etc etc.. but then you don't get the gain you expected.. you run more boost or try and make up power other ways..

[punkture]

awesome so roughly 2500? all up then tuning etc?

[Haynesie]

hey guys,
I paid 1150 for my 6boost manifold and have just got a price on a garrett GT3076r with .6 rear of 1590 this combo will spool quickly and take big boost 18psi - 24psi. (supporting mods needed!)