typexero

Hey guys. I have a 1997 Integra LS/VTEC with cp pistons (9:1 compression), Manley rods, B18C1 head with stage 1 cams, exhaust, intake, etc. I wanted to buy a turbo to finish my setup. I created this poll to see what you guys recommend. You guys just may decide the fate of my project car so please keep that in mind. I want full boost around 4500 RPM.

chimmike

this poll is terrible dude.

you cannot compare a GT28R and GT28RS in the same field, let alone a GT28R vs. a GT30R!

Before you do anything more, you need to decide what your POWER Goal is, not what rpm you want full boost at.

typexero

Wow the GT30R is getting a lot of votes. Does anyone have a torque curve of one with an integra?

typexero

Power goal = 300 - 350 WHP

I'm not sure if the GT28RS can hit that on a Mustang dyno.

I am also not sure if the b18b1 bottom end can handle more than that (i know my pistons and rods can). A local engine builder told me that that is the limit of my bottom end.

typexero

From what I understand, after a certain horsepower threshold the Integra becomes more/less undriveable. The car will have a lot of difficulty putting the power down. I don't want to just drag race. I want to put this car on a track with turns so my goal is not just straight 500 hp or whatever. I want a proper torque curve that will allow me to excel in a situation where I have to take turns and slow down/speed up. I know that if I go above a certain threshold in turbo size I will have a significant amount of turbo lag. The question is which of these turbos will minimize that lag and still give me 350 whp. My current VTEC engagement point is 4500 RPM that is why I chose that number.

TheShodan

iTrader: (14)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typexero &raquo;</TD></TR><TR><TD CLASS="quote">From what I understand, after a certain horsepower threshold the Integra becomes more/less undriveable. The car will have a lot of difficulty putting the power down. I don't want to just drag race. I want to put this car on a track with turns so my goal is not just straight 500 hp or whatever. I want a proper torque curve that will allow me to excel in a situation where I have to take turns and slow down/speed up. I know that if I go above a certain threshold in turbo size I will have a significant amount of turbo lag. The question is which of these turbos will minimize that lag and still give me 350 whp. My current VTEC engagement point is 4500 RPM that is why I chose that number.</TD></TR></TABLE>

There you go.. THAT's better.. giving some better information.

BW S252 or GT2871R could do well for road race.

jdm_dc_fan

iTrader: (1)

i used to own a gt30r and i loved it. im gonna buy another one in the future

typexero

Do you think I can still get 300 WHP with those turbos.

typexero

Did you use the gt30r on an integra? If yes how was the power delivery?

94delslo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typexero &raquo;</TD></TR><TR><TD CLASS="quote">Do you think I can still get 300 WHP with those turbos.</TD></TR></TABLE>

you could get close to 500 on those turbos if you wanted to.

typexero

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94delslo &raquo;</TD></TR><TR><TD CLASS="quote">

you could get close to 500 on those turbos if you wanted to.</TD></TR></TABLE>

I was talking about the GT28RS...

m R g S r

28RS if you want to road race the car.... but your current vtec engagement point should have nothing to do with your decision, because you do plan on getting the car tuned right? You know the tuner will set the vtec point to wherever....

94delslo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typexero &raquo;</TD></TR><TR><TD CLASS="quote">I was talking about the GT28RS... </TD></TR></TABLE>

oops lol. yeah well this will about sum it up for ya...

gt30r max hp approx = 575
bw s252 max hp approx = 550
gt28rs max hp approx = 350

blinx9900

i have a GT3076r on a b16b/a and i love it! 333whp at 12psi 91 octane 8.3:1 compression and it spools pretty damn fast!!

chimmike

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94delslo &raquo;</TD></TR><TR><TD CLASS="quote">

oops lol. yeah well this will about sum it up for ya...

gt30r max hp approx = 575
bw s252 max hp approx = 550
gt28rs max hp approx = 350</TD></TR></TABLE>

For road racing, I actually think he'd have better luck with a 3076R than a 28RS due to the instantaneous boost the 28rs would produce, it would kill traction.

downeyballz

im also intrested in the gt2871

TheShodan

iTrader: (14)

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

For road racing, I actually think he'd have better luck with a 3076R than a 28RS due to the instantaneous boost the 28rs would produce, it would kill traction.</TD></TR></TABLE>

Traction issues are in your driving style for an FWD, not just response. In the GT3037 that I used in the Integra, you actually had to turn down power. In road race, instant torque is the equalizer, not power, so you want something very linear, and quick.. But the driver has to do more work than anything in order to retain "traction".

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 94delslo &raquo;</TD></TR><TR><TD CLASS="quote">
gt30r max hp approx = 575
bw s252 max hp approx = 550
gt28rs max hp approx = 350</TD></TR></TABLE>

Those numbers are a bit off. The S252 will never do that power (about 450whp). The S256 is closer to what you're seeing. The GT30R CAN be pushed to about 525whp, but you'll never use it to that level in a road race. Anything more than about 295-300whp on most U.S. circuits is useless.

Again, I'd use the S252 or GT2871R for that purpose.

typexero

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blinx9900 &raquo;</TD></TR><TR><TD CLASS="quote">i have a GT3076r on a b16b/a and i love it! 333whp at 12psi 91 octane 8.3:1 compression and it spools pretty damn fast!!</TD></TR></TABLE>

Do you have a dyno graph/where do you experience full boost?

black_EM1

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by typexero &raquo;</TD></TR><TR><TD CLASS="quote">Did you use the gt30r on an integra? If yes how was the power delivery?</TD></TR></TABLE>

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

Do you have a dyno graph/where do you experience full boost?</TD></TR></TABLE>




That's my old dyno graph. It's a GT3076R on a piston/rod Poorman's R with ITR cams. The power just kept coming.

94delslo

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TheShodan &raquo;</TD></TR><TR><TD CLASS="quote">Those numbers are a bit off. The S252 will never do that power (about 450whp). The S256 is closer to what you're seeing.</TD></TR></TABLE>

yep your right. i was thinking about the s256

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TheShodan &raquo;</TD></TR><TR><TD CLASS="quote">The GT30R CAN be pushed to about 525whp, but you'll never use it to that level in a road race. Anything more than about 295-300whp on most U.S. circuits is useless.

Again, I'd use the S252 or GT2871R for that purpose.</TD></TR></TABLE>

i was referring to the GT3082R. i guess i should have specified that as well

i agree with TheShodan. a nice powerband is what you want on a road course, not high hp.

KeyserSoze

Please take Mac's (TheShodan's) suggestion and call it done. Mac is one of the most educated and experienced turbo guys on this forum, ignoring his suggestion (for what you have said you wanted) is NOT smart. GL.

dpetro1

keep studying up and searching around on this site. most of these questions have been asked before. also what is the rest of the turbo setup going to be? some components can effect spool and power as well.

The fact the you have an integra really has nothing to do with power or spool and your built bottom end can handle plenty of power. there are plenty of people running stock sleeves at 400whp and above so there should be no issues there

head over to the evans-tuning website, they have an archive of dyno graphs, im sure you could find a setup similar to yours for reference.

and as for the original question, stick with the gt28 or similar for your auto-x needs.

chimmike

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by black_EM1 &raquo;</TD></TR><TR><TD CLASS="quote">




That's my old dyno graph. It's a GT3076R on a piston/rod Poorman's R with ITR cams. The power just kept coming.

</TD></TR></TABLE>


that is a GREAT looking powerband, IMO. The power delivery is extremely linear!

blinx9900

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

Do you have a dyno graph/where do you experience full boost?</TD></TR></TABLE>

about 4500rpm is where i get full boost which is 12psi and thats on a 1.6

typexero

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blinx9900 &raquo;</TD></TR><TR><TD CLASS="quote">i have a GT3076r on a b16b/a and i love it! 333whp at 12psi 91 octane 8.3:1 compression and it spools pretty damn fast!!</TD></TR></TABLE>

Do you have a dyno graph/where do you experience full boost?