spoonfed95

I have been researching this for some time. I have a 84MM GSR with 9:1 compression that I am going to boost. I have decided on Full-Race's Stage 2GT kit for the kit and I trying to pick the best GT30R for my application. I would like full boost by at least 4000 RPM or sooner if possible and I would like to make 400-425 WHP. What Trim and A/R should I order? I have searched but I can't seem to get the answer. Thanks for all help.

spoonfed95

I was on Full-Race's web site and under the tech section the are some sample turbo graphs. Under the GT series graphs there is a 1.93L GSR that is built just like mine. It has a .82A/R housing upgrade and make great power, what would the same engine do with a different A/R housing?

sc4dr

I think your pushing it to have full boost at or before 4,000 rpm's. You wouldnt really want full boost that early anyway. I personally run a t3/t4, but I hear really good stuff about that turbo.

spoonfed95

Ok, I could see that... Sounds like I may go .82A/f like on Full-Race's web site. IT makes really good power.

Any one else have an option? Thanks again.

discopotato03

You can trust Geoff , I'd ask him .

xsi-t

You're looking for 425whp at most with an 84mm GSR with a GT3076RLS. There is no reason to go bigger than a .63 A/R on the turbine. With a 1.8 liter I was making 14lbs at 4000RPM - 4300RPM

-- 0x64

cuin9sec

30r spool time with .63 a/r would be 4000-4500. now if i were you i would get the gt35r .82 a/r. spool time 5000-5500 and believe me...it hits HARD!!! plus if you ever decide to upgrade then youll have the turbo to handle upwads of 700whp!!!

turbosnatch

seeing the motor is sleeved are you planning on going hardcore later? cause i would keep my options open and think about the future if that is the case.

cuin9sec

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by turbosnatch &raquo;</TD></TR><TR><TD CLASS="quote">seeing the motor is sleeved are you planning on going hardcore later? cause i would keep my options open and think about the future if that is the case. </TD></TR></TABLE>

thats why im saying 35r

oscarmayer

I think the specs for the turbo need to fit your needs. I can tell you from personal expirneces too big a turbo might make lots of power easly on the top end, but sucks totally for street usage. so the quesiton is, are you wanting a decent daily driver or a ***** to the wall racer that sees once in a while steet duty?

that's honestly is going to decide a LOT of factors about your car and motor. including cam seleciton, intake selection, manifold selection, and turbo specs.

post up your realistic (not just dyno queen numbers either) goals, and we can go from there.

dpetro1

im gonna suggest gt3076r with the .82ar. 500-550whp turbo with awesome spool time. i remember seeing the graph of andrea's car making 565whp @ 32psi on this turbo. awesome street turbo that can still make some numbers. nothing wrong with the .63ar for your goal though.

edit: 32psi at about 5400rpm btw. only 81.5mm, worked head, cams and whatnot

timg

I just checked some data logs. I have seen full boost by 4000 rpm with my 2.2L on a 0.82 turbine housing in sixth gear. In normal driving, even with the smaller 0.63 a/r turbine housing, spool takes a bit longer. In third gear, I have 7.5 psi by 4000 rpm, 11.25 by 4500 rpm, and 14 psi by 5000 rpm.

Tim

spoonfed95

Ok here is my setup, feel free add comments about parts as things could change before buildup.

Factory ITR Head
ITR cams.
Sleeved 84MM GSR block
CP Pistons
Manley Rods
Factory ITR crank
OEM ITR Intake
62MM OEM ITR TB
Hondata Intake manifold gasket
1000cc injectors Not sure yet.
Compition clutch stage 4
ITR Trans

I am going to use this car as a daily driver. I would like (Real World) 450WHP. I don't plan on ever going to more then 600WHP ever. Parts cost to much at that level.

I was looking at full-race's site and under the GT turbo dyno section is a 1.93L GSR build very close to what I want to build. It makes just under 450WHP. This is what I am looking for. I think a GT35R is to big for what I want. I just can't choose between .63A/R or .82A/R for the GT30R. I see the .82's dyno what would do on the 1.93L GSR, but what would the .63 look on same engine?


Modified by spoonfed95 at 7:54 PM 9/15/2006

spoonfed95

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by cuin9sec &raquo;</TD></TR><TR><TD CLASS="quote">30r spool time with .63 a/r would be 4000-4500. now if i were you i would get the gt35r .82 a/r. spool time 5000-5500 and believe me...it hits HARD!!! </TD></TR></TABLE>

I see the power from ther GT35R but why would you only want a 5000-8000 power range? Full boost from 4000-8000 with a GT30R .63 seems better to me. Am I wrong or what am I not seeing? For $4500 I want to order the best kit for me.

cuin9sec

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoonfed95 &raquo;</TD></TR><TR><TD CLASS="quote">

I see the power from ther GT35R but why would you only want a 5000-8000 power range? Full boost from 4000-8000 with a GT30R .63 seems better to me. Am I wrong or what am I not seeing? For $4500 I want to order the best kit for me.
</TD></TR></TABLE>

really depends on what you want man...if i were you and got the 30r...then i would def get the .82 a/r. BELIEVE me...

but if it were me....i would get the 35r. i ran the 35r on a STOCK gsr and made right at 400whp daily driver. it was a t3/t67 h.o. BASICALLY the same damn turbo but the 35r would spool a LOT quicker. i was seeing full 14psi around 6500rpms and you with the 35r should see full boost somewhere around 5500-6000 rpm...just my 2 cents.

GOOD LUCK with the build!!!

boosted94cx

i'd go for at least a GSR tranny with an LSD....or itr tranny

and i'd save some money and just get eagles, they're more than adequate for over 700whp, so why waste money for something that's not gonna help in any way?

and i'd got for the .63 GT35R if it were me

cuin9sec

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boosted94cx &raquo;</TD></TR><TR><TD CLASS="quote">i'd go for at least a GSR tranny with an LSD....or itr tranny

and i'd save some money and just get eagles, they're more than adequate for over 700whp, so why waste money for something that's not gonna help in any way?

and i'd got for the .63 GT35R if it were me</TD></TR></TABLE>

either way...35r will be the best option. ask Geoff at full-race...he will tell you whats best...and you can trust them man!

EARLdaSQUIRREL

The Gt30r has a .82a/r housing, and the Gt35r has the .82a/r housing as well. The torque is dropping at 32psi on the Gt30r plot due to the backpressure in the turbine housing, as well as the gt35r. We are going to swap out the housing to a 1.06 a/r and see how much more we can get out of the turbo. I believe its capable of reaching close to 600whp with the 1.06 a/r, but time will tell. The 1.06 a/r housing should be tested in the next few weeks.

all from http://www.evans-tuning.com

if you notice it... theres nearly 75whp more at 4500 rpm's using the bigger of the 30r's compared to the same housing 35r

imo a 30r is one of the best street turbos

spoonfed95

Why a GSR tranny or a ITR trans? I have always heard that the LS's long gears were great for turbo. I may go to the GT35R with .63 A/R, when would full boost kick in with tha t set-up? Not alot of cash to step up to GT35R.

EARLdaSQUIRREL

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by spoonfed95 &raquo;</TD></TR><TR><TD CLASS="quote">Why a GSR tranny or a ITR trans? I have always heard that the LS's long gears were great for turbo. I may go to the GT35R with .63 A/R, when would full boost kick in with tha t set-up? Not alot of cash to step up to GT35R.</TD></TR></TABLE>

ls trans are horrible for acceleration so that means there horrible for anything with decent power unless you want to go 170 mph topping out 5th gear lol

cuin9sec

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by coptzer &raquo;</TD></TR><TR><TD CLASS="quote">ls trans are horrible for acceleration so that means there horrible for anything with decent power unless you want to go 170 mph topping out 5th gear lol</TD></TR></TABLE>

exactly...

Muckman

iTrader: (2)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by coptzer &raquo;</TD></TR><TR><TD CLASS="quote">if you notice it... theres nearly 75whp more at 4500 rpm's using the bigger of the 30r's compared to the same housing 35r</TD></TR></TABLE>

There is a greater difference at 5000rpm.

I dont understand why anyone would recommend a bigger turbo than needed to reach the goal. A 3076 can make 500-550hp easy, even with a .63ar. He could even reach his goal on a smaller 3071. Bigger is not always better.

spooncivic1

GT4088R

ALL IMPORT

i can tell u this.
if u want a DAILY DRIVER with good power. boost at 5500 aint the way to go. its fun at first but after a while it gets a little old.

i have that issue myself. dont make power till 5600 but when it comes in hold on cause after burner puts u in the seat.
i get 8psi at 4000 so u feel a little something.
aslo power comming in like that make 1st/2nd a joke. u cant even feather the power in, its like being in a top fuel car just tap the gas & the tires roast right off.

one good thing no one can keep up above 80.
ive beat a 600 ninja up to 160 on the turnpike that was awsome.
but thats what ive learned from my veiw. if i had another street car i would go smaller

spoonfed95

GT30R .82A/F seems the way to go... I am wondering about this tranny question. I am NOT drag racing or Autocrossing this car so I do not care about being the fastest from one point to another. Is there a real reason why the LS is not a good Turbo trans? Thanks so far to everyones imput.