rob20rx7

iTrader: (1)

Well.... Just like it says, i would like to see if anyone has used this size turbo and if so what were the results. right now i have a TS04 with street port and 850 pri and 1600 sec. Im making about 405 RWHP @19 PSI. I came up with this turbo kit a few years ago and although im happy with how the car feels. i feel that i should have gone with a bigger turbo. idealy i would like to be at 480 RWHP if that where possible with the most efficient Turbo setup. Im also open to suggestions, so if someone has any ideas, i wanna hear them

Bond

I was trying to sell my T72 Qtrim .96, but couldnt get any takers. Im glad i didnt though, now im stealing the Q trim wheel and putting it into my T66. Backpressure is evil.....

Bond

I was trying to sell my T72 Qtrim .96, but couldnt get any takers. Im glad i didnt though, now im stealing the Q trim wheel and putting it into my T66. I did run the T72 for awhile and hated the lag, as far as i know everone else who ran it say the T72=boost at 5K.

Bond

I was trying to sell my T72 Qtrim .96, but couldnt get any takers. Im glad i didnt though, now im stealing the Q trim wheel and putting it into my T66. I did run the T72 for awhile and hated the lag, as far as i know everone else who ran it say the T72=boost at 5K.

93 R1

Buy a t66 with a q trim. That will make more then the power you want and will boost sooner then the 72.

rob20rx7

iTrader: (1)

Is that it? No more suggestions?

IGY

T66 or TO4R for that hp goal would be good turbos. Since you are shooting for under 500 you would do fine with the P trim AR .96 and have a little less lag. If you were shooting for 600rwhp I would say T72, but for 480rwhp the T66 or TO4R will actually take less boost to achieve your goal.

sevenin7

t66 with q trim and 1.0a/r . The best .

rob20rx7

iTrader: (1)

i was talking to a local builder today and he said that he made 486 RWHP at 19PSI on pump gas with a T-66 q with a .96

Bond

i just got the q wheel swapped in the t66, and the ratio is very nice at around 1.14. So i should eliminate all my high levels of back pressure.

rob20rx7

iTrader: (1)

any word on how the car ran with the new turbo setup?

rob20rx7

iTrader: (1)

Ok, based on feedback and on local research, It looks like im going with a T66 Turbo with a .96 housing and a Q wheel. water cooled. Hopefully this seals the deal and i can make my Goal of Just over 500 RWHP on pump gas.

sevenin7

I beleive that is a little difficult to produce 500rwhp with 0.96 a/r . 1.0 its better .
Opinions about that guys ????

rob20 how much boost are you planning to work with pump gas ???

rob20rx7

iTrader: (1)

id like to go no higher that 19-20psi

sevenin7

about a/r : 0.96 ?

SPOautos

I dont think your going to make 500rw with a T66 and pump gas. I know Steve Kan used to run a T66 and made around 430rwhp on pump gas....he was running a P trim but honestly I dont think it was robbing 70rwhp at those boost levels.

To break 500rwhp he had to get way up around 25+psi of boost.

If you want to get real close to 500rw on pump gas you might need to stay with that T72 Q trim.

STEPHEN

SPOautos

sorry, double post

sevenin7

stephen, i agree with you .
Do you know what hot side a/r is ideal to produce 500rwhp with T72 Q trim ? 1.0 or 0.96 ?

rob20rx7

iTrader: (1)

i made 423 @ 19-20PSI this friday with pump gas and some more tunnig. Now, i have a TS04 which is just a little bigger than a 60-1 with a p wheel an a .70 housing. I think thats where it stops there though. I think that with a bigger turbo i should get those extra 70 or 80hp im looking for.

Bond

Just got the wheels swapped over on the T66. Now running a Q trim on .96 housing. Previously running 10 psi boost i saw 17 psi backpressure on a P trim, now i see 15psi backpressure at 12psi boost. A interesting thing i did see, about 200 degree drop in egt with the Q wheel. Im up to about 21 degrees timing at 12psi and still good looking egts. However the Q is taking way longer to come on, so im working with local turbo builder on possible changing the A/R to bring it on sooner. Hope this gives you guys some more info.

mike

sevenin7

bond do you mean smaller than 0.96 a/r ?

sevenin7

rob what a/r is the t04s ?

Bond

Yes, we've been talking about a .84 or .81 but nothing deffinate yet. Rather than spend hundreds on these Q trim housings were going to bore some P trim ones open and test a few different a/r's.

Ryde _Or_Die

Great post! I'm looking for something similar but not quite so much power. I really want a solid 450rwhp. What turbo could I do this with? Any that I can run on pump gas? I've been eyeing this:

http://store.yahoo.com/cheapturbo/garrettto4r.html


How far could that turbo take me?

rob20rx7

iTrader: (1)

I just called and spoke to Ken, Sounds like a real nice guy. anyways he qoutes and recomends a Turbo they have which is a GT40 Competion Turbo with a .96 a/r and a p wheel with a 3" v-band welded on,......974.00 shipped to my door.