What kind of horsepower would you say this turbo on a street ported motor with all the extras like FMIC, etc put out??? Is this a good turbo at all?? I am looking for around 450rwhp...


Garrett T-63, Q_Trim .96a/r, Specified Turbine Clip
3" inlet, 360 degree race bearing

 

that turbo will do well if it is ran above 17 or so PSI of boost!
Bryan.
87 t2

 

I want to run this turbo with a bridge ported motor( I was going to go street port, but I have been hearing alot about bridge porting) with heavy duty 2 mm seals. I am looking to get as 450rwhp+ out of it, but I am not sure if that can be done. I will probably go with a haltech for engine management, unless anyone thinks a Apexi power FC would be better. I would really honesty like to have about 500rwhp of course on a race setting(high boost), not for everyday driving.

 

BTW, thanks FEARED7 , I was hoping some more people would be able to comment on this too.

 

You shouldnt have any problems making 450+ HP with that turbo and your spool up should be pretty respectable also.

 

Thanks greg I was waiting to see if you would have any input on this.. The guy qoutes this turbo as being "upto 700hp" , so I figured it could give me the 450rwhp or + that I am looking for. Anyone else have any input??

 

With a T-63 450hp should be not a problem!

crispeed
87TII
9.20@150mph

 

Damn, you guys are the best... Exactly what I wanted to hear, even though those exclimation points are scaring me now..

 

I do not think you will face to many problems in getting to your power goal of 450+rwhp with this turbo compressor setup.

I would suggest that with that size of rear housing that you pay particular attention to your wastegate system and ensure that it is designed correctly to allow good flow away from the turbine section as that housing is small in my opinion, and you will find that your torque curve will start to drop quite a bit once the revs go over 6800rpm resulting in a engine that is basically choking on its own exhaust gas.

A good sized wastegate (45mm or larger) should aleviate this problem if you want to experience the true top end power that a ported rotary can deliver with out using "stupid" boost pressures. As a guide if your torque output starts to fall of after 6800rpm with a good ported engine, in general you are "choking" the engine, you need to run a larger rear housing, redesign your wastegate system, or open up your ports more !.

You will still have good power, but you will have to make it with a lot of boost pressure + you will not get the full benifit of that style of porting and the low boost power it offers.

 

Chris~, didnt John Durate have this turbo when he ran a 10:80 quatermile?

 

Again I am very grateful for your guys advice. So basically with a BP I will probably be choking the motor from 6800rpm up?? I would like to have good power at around 15-17 psi and great power upwards of that. What do you think would be the psi this turbo would make most of its boost at???

 

YES he did and it made over 500RWHP at 24psi with a .96 turbine housing on a street ported motor!

crispeed
87TII
9.20@150mph

 

Instead of your torque curve being flat till 8000rpm you will find it peaking at around 6500rpm then falling away till your max power at around 7800rpm.

A BP or PP engine when mated to a non restrictive wastegate/turbine system will behave like it's n/a counterpart holding torque flat to around 8000rpm depending on tunned lenghts of intake/exhaust systems and othe samll factors such as air speed through intake runners, this results in a typical BP/PP POWER CURVE wich shows a steady linear rise to peak power wich can be tailored but generaly happens in the 8000 to 10000rpm range...In general if you see that the power curve remains generaly flat from say 6800 rpm to 7800rpm this is usually a sign of a fallling torque curve wich starts fall at around 6500rpm, this again typically is a sign of an engine that is not breathing at it's most efficient due to a number of factors.

Dont get me wrong it still make a lot of power, it will make full boost at lower rpm as well, but it is not efficient in the upper rpm ranges, when it is all matched right for high rpm power (8000+rpm) then the torque curve stays flat till around 7800rpm or even higher depending on spec of the engine and manifolds etc.