GT32 VS. GT28RS
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From: raleigh, nc, usa
GT32 VS. GT28RS
Here is my setup B20 Vtec with 10.5:1 compression bolted up to a GSR transmission. Which turbo do you think will suit me best?? I plan on running about 10-14lbs of boost.
I think the disco will spool faster but fall off in the top end, while the Gt32 will do the opposite. BUT, I am not worried about lag that much cause of the high compression and aggressive gearing.
So what do you guys think?
I think the disco will spool faster but fall off in the top end, while the Gt32 will do the opposite. BUT, I am not worried about lag that much cause of the high compression and aggressive gearing.
So what do you guys think?
Joined: May 2004
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From: Trondheim, Norway
Re: GT32 VS. GT28RS (Talonspeed)
Isn't a split inlet housing (like the gt32) supposed to give huge gains in spoolup, given that you build a manifold to take advantage of this ?
I have heard you could expect as much as 25% earlier spoolup on a 6cyl, as well as more topend power. Dont know how this apply for a four cyl.
At least the gt32 has a much bigger turbine, and will give less backpressure and more hp up top, no doubt.
I have heard you could expect as much as 25% earlier spoolup on a 6cyl, as well as more topend power. Dont know how this apply for a four cyl.
At least the gt32 has a much bigger turbine, and will give less backpressure and more hp up top, no doubt.
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Re: GT32 VS. GT28RS (Talonspeed)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Talonspeed »</TD></TR><TR><TD CLASS="quote">I am not worried about lag that much cause of the high compression</TD></TR></TABLE>
Compression doesn't do jack to help with spool up, so you might want to start thinking about lag more.
"10-14" pounds means nothing to us, because you could run 14 pounds of boost on a straight T3 turbo into your motor, but it isn't going to make nearly the power a GT32 will. Make a power goal, not a boost goal.
Compression doesn't do jack to help with spool up, so you might want to start thinking about lag more.
"10-14" pounds means nothing to us, because you could run 14 pounds of boost on a straight T3 turbo into your motor, but it isn't going to make nearly the power a GT32 will. Make a power goal, not a boost goal.
B*a*n*n*e*d
Joined: Sep 2000
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From: Philadelphia, PA, USA
Re: GT32 VS. GT28RS (Chip)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chip »</TD></TR><TR><TD CLASS="quote">
Compression doesn't do jack to help with spool up, so you might want to start thinking about lag more.</TD></TR></TABLE>
wrong.
talonspeed- depends on what power curve you want. it seems like you know what the option are, you just need to decide what you want your curve to look like.
Compression doesn't do jack to help with spool up, so you might want to start thinking about lag more.</TD></TR></TABLE>
wrong.
talonspeed- depends on what power curve you want. it seems like you know what the option are, you just need to decide what you want your curve to look like.
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Re: GT32 VS. GT28RS (00SilverLS)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00SilverLS »</TD></TR><TR><TD CLASS="quote">
wrong.
</TD></TR></TABLE>
Prove it.
http://forums.evans-tuning.com...=1612
Ok, let me guess, you're going to tell me about your wealth of personal experience and how much compression owns? Right.
Trust me, I went ahead and built a 10.5:1 turbo motor because people like YOU told me high compression made the turbo spool up quick, only to be disapointed when I actually got it running.
wrong.
</TD></TR></TABLE>
Prove it.
http://forums.evans-tuning.com...=1612
Ok, let me guess, you're going to tell me about your wealth of personal experience and how much compression owns? Right.
Trust me, I went ahead and built a 10.5:1 turbo motor because people like YOU told me high compression made the turbo spool up quick, only to be disapointed when I actually got it running.
Joined: Sep 2004
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From: Montreal, QC., Canada
Re: GT32 VS. GT28RS (Chip)
If you are not worried about lag, go with the gt32, It still spools really fast.(don't you worry traction will still be an issue). The Gt32 is rated to ~520 hp.
Personally I find this turbo is bang for the buck and really under rated.
Personally I find this turbo is bang for the buck and really under rated.
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Joined: Feb 2003
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From: schooling kids in ny, usa
Re: GT32 VS. GT28RS (95GSRT)
the 28rs will be getting out of efficency on 14 psi on a gsr motor i think.
the map for the gt32 is beautiful, much better than the gt30. see if you can get a gt32 with a .63 turbine a/r. should be perfect.
and 10.5:1 is kinda high, i hope you have a forged motor and good tuning in the works
the map for the gt32 is beautiful, much better than the gt30. see if you can get a gt32 with a .63 turbine a/r. should be perfect.
and 10.5:1 is kinda high, i hope you have a forged motor and good tuning in the works
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From: Altamonte Springs/Orlando, Florida, USA
Re: GT32 VS. GT28RS (Chip)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chip »</TD></TR><TR><TD CLASS="quote">
Prove it.
http://forums.evans-tuning.com...=1612
Ok, let me guess, you're going to tell me about your wealth of personal experience and how much compression owns? Right.
Trust me, I went ahead and built a 10.5:1 turbo motor because people like YOU told me high compression made the turbo spool up quick, only to be disapointed when I actually got it running.
</TD></TR></TABLE>
Funny I do see more boost and power being made sooner... and <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote"> ''2.5" downpipe, 2.5" exhaust with an itr muffler (def. a restriction). About 20-25whp worth of power loss pretty much everywhere, with slower spool. We dropped the muffler and found out how restrictive. I can say that its the quiestest turbo car i have ever driven in and tuned.'' </TD></TR></TABLE>
This junk blocking up the exhaust can't show you considerable difference, this test isn't valid although does that show boost comming sooner.
Prove it.
http://forums.evans-tuning.com...=1612
Ok, let me guess, you're going to tell me about your wealth of personal experience and how much compression owns? Right.
Trust me, I went ahead and built a 10.5:1 turbo motor because people like YOU told me high compression made the turbo spool up quick, only to be disapointed when I actually got it running.
</TD></TR></TABLE>
Funny I do see more boost and power being made sooner... and <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote"> ''2.5" downpipe, 2.5" exhaust with an itr muffler (def. a restriction). About 20-25whp worth of power loss pretty much everywhere, with slower spool. We dropped the muffler and found out how restrictive. I can say that its the quiestest turbo car i have ever driven in and tuned.'' </TD></TR></TABLE>
This junk blocking up the exhaust can't show you considerable difference, this test isn't valid although does that show boost comming sooner.
Joined: Jun 2004
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Re: GT32 VS. GT28RS (MidShipCivic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MidShipCivic »</TD></TR><TR><TD CLASS="quote">
Funny I do see more boost and power being made sooner... and</TD></TR></TABLE>
Funny, if you look at the boost curve you'd see boost comes on exactly the same.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MidShipCivic »</TD></TR><TR><TD CLASS="quote">This junk blocking up the exhaust can't show you considerable difference, this test isn't valid although does that show boost comming sooner.
</TD></TR></TABLE>
Yeah, and that junk blocking up the exhaust is blocking up the exhaust on the high compression and the low compression setup. A small exhaust wouldn't magically mask any huge spooling gains like what has been BS'ed around on here.
Even if that test were terrible, it's still better than any other nonexistant tests anyone else has showing how much *** high compression kicks.
Funny I do see more boost and power being made sooner... and</TD></TR></TABLE>
Funny, if you look at the boost curve you'd see boost comes on exactly the same.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MidShipCivic »</TD></TR><TR><TD CLASS="quote">This junk blocking up the exhaust can't show you considerable difference, this test isn't valid although does that show boost comming sooner.
</TD></TR></TABLE>
Yeah, and that junk blocking up the exhaust is blocking up the exhaust on the high compression and the low compression setup. A small exhaust wouldn't magically mask any huge spooling gains like what has been BS'ed around on here.
Even if that test were terrible, it's still better than any other nonexistant tests anyone else has showing how much *** high compression kicks.
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From: Altamonte Springs/Orlando, Florida, USA
Re: GT32 VS. GT28RS (Chip)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Chip »</TD></TR><TR><TD CLASS="quote">
Funny, if you look at the boost curve you'd see boost comes on exactly the same.
Except that I see boost comming sooner VERY early, then mimicking the curve at a higher evel than low compression line
Yeah, and that junk blocking up the exhaust is blocking up the exhaust on the high compression and the low compression setup. A small exhaust wouldn't magically mask any huge spooling gains like what has been BS'ed around on here.
Even if that test were terrible, it's still better than any other nonexistant tests anyone else has showing how much *** high compression kicks.</TD></TR></TABLE>
In conclusion the comparison was for turbo spool and theres an oem muffler plugging up the exhaust keeping the turbine spinning as freely as possible.
What kind of bs is that?
Funny, if you look at the boost curve you'd see boost comes on exactly the same.
Except that I see boost comming sooner VERY early, then mimicking the curve at a higher evel than low compression line
Yeah, and that junk blocking up the exhaust is blocking up the exhaust on the high compression and the low compression setup. A small exhaust wouldn't magically mask any huge spooling gains like what has been BS'ed around on here.
Even if that test were terrible, it's still better than any other nonexistant tests anyone else has showing how much *** high compression kicks.</TD></TR></TABLE>
In conclusion the comparison was for turbo spool and theres an oem muffler plugging up the exhaust keeping the turbine spinning as freely as possible.
What kind of bs is that?
Sexy Cheese Cake
Joined: Feb 2004
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From: Ill INoise, U.S. of A
Re: GT32 VS. GT28RS (MidShipCivic)
what i read was more so saying that hes not worried about lag since he has compression and good gearing so the power b4 the turbo hits on will be fine with him. thats at least what i thought he was saying.
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Re: GT32 VS. GT28RS (MidShipCivic)
There's the pressure plot, I know it's pretty hard to see on boosted hybrid's site. The curves are, for all intents and purposes, exactly the same for spool up. The high comp one has a pinch more boost on top, which accounts for some of the extra horsepower. Now you tell me how this chart shows the high comp motor spooling quicker?
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From: RIP Duke of Turbo, CA
Re: GT32 VS. GT28RS (duckmanEG)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by duckmanEG »</TD></TR><TR><TD CLASS="quote">what i read was more so saying that hes not worried about lag since he has compression and good gearing so the power b4 the turbo hits on will be fine with him. thats at least what i thought he was saying.</TD></TR></TABLE>
Dito.
Dito.
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From: Altamonte Springs/Orlando, Florida, USA
Re: GT32 VS. GT28RS (KeyserSoze)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by KeyserSoze »</TD></TR><TR><TD CLASS="quote">
Dito.
</TD></TR></TABLE>
But seriously who worries about lag with a gt28rs ? It's needless to think about.
Dito.
</TD></TR></TABLE>
But seriously who worries about lag with a gt28rs ? It's needless to think about.
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From: RIP Duke of Turbo, CA
Re: GT32 VS. GT28RS (MidShipCivic)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MidShipCivic »</TD></TR><TR><TD CLASS="quote">
But seriously who worries about lag with a gt28rs ? It's needless to think about.</TD></TR></TABLE>
Don't get me wrong, I didn't say I'd be worried about the boost threshold, just said that I presumed that he meant that the boost threshold (cause that is what we are talking about right?) wasn't much of a concern because he had plenty in the motor (due to the high compression and gearing) at lower rpms. Nice run-on huh?
But seriously who worries about lag with a gt28rs ? It's needless to think about.</TD></TR></TABLE>
Don't get me wrong, I didn't say I'd be worried about the boost threshold, just said that I presumed that he meant that the boost threshold (cause that is what we are talking about right?) wasn't much of a concern because he had plenty in the motor (due to the high compression and gearing) at lower rpms. Nice run-on huh?
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You are comparing a 360 HP turbo to a 500+ HP turbo. They are two very different turbochargers. If you want a little more power then the GT28RS but are worried about lag, maybe think about a GT2871R, GT3071R or GT3076R.
Personally, I say get the biggest turbo that you can keep in boost after a full throttle shift just past your HP peak.
Personally, I say get the biggest turbo that you can keep in boost after a full throttle shift just past your HP peak.
Re: GT32 VS. GT28RS (blackeg)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blackeg »</TD></TR><TR><TD CLASS="quote">the 28rs will be getting out of efficency on 14 psi on a gsr motor i think.
the map for the gt32 is beautiful, much better than the gt30. see if you can get a gt32 with a .63 turbine a/r. should be perfect.
and 10.5:1 is kinda high, i hope you have a forged motor and good tuning in the works</TD></TR></TABLE>
i have the same turbo. gt3255E
stock head stock block b16 on pump with 15psi..
330whp..
the map for the gt32 is beautiful, much better than the gt30. see if you can get a gt32 with a .63 turbine a/r. should be perfect.
and 10.5:1 is kinda high, i hope you have a forged motor and good tuning in the works</TD></TR></TABLE>
i have the same turbo. gt3255E
stock head stock block b16 on pump with 15psi..
330whp..
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From: schooling kids in ny, usa
Re: GT32 VS. GT28RS (integlspwr2k)
^^^^ see thats what im talking about. it looks like your power really comes in hard after 5k, which means that when you shift at redline, you will come back into gear right into the powerband, so lag shouldnt be an issue
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From: RIP Duke of Turbo, CA
Re: GT32 VS. GT28RS (integlspwr2k)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by integlspwr2k »</TD></TR><TR><TD CLASS="quote">
i have the same turbo. gt3255E
stock head stock block b16 on pump with 15psi..
330whp..
</TD></TR></TABLE>
V nice #'s. All on stock engine, gives me good feelings about running 15psi on my setup.
i have the same turbo. gt3255E
stock head stock block b16 on pump with 15psi..
330whp..
</TD></TR></TABLE>
V nice #'s. All on stock engine, gives me good feelings about running 15psi on my setup.
Thread Starter
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From: raleigh, nc, usa
Re: GT32 VS. GT28RS (KeyserSoze)
I dont want anything more than 350whp. This is going to be a daily driver, weekend warrior type car, lol.
My concers are that the Gt28RS will run out of breath on the top end. Stock cams have alot of overlap and I dont want reversion to kill my horse power.
I like the Gt32 because it is cheap!!! about $300-$400 less than a disco potato.
i want something that is going to pull all the way to redline without falling on its face and that is efficient running around 10-14psi.
My concers are that the Gt28RS will run out of breath on the top end. Stock cams have alot of overlap and I dont want reversion to kill my horse power.
I like the Gt32 because it is cheap!!! about $300-$400 less than a disco potato.
i want something that is going to pull all the way to redline without falling on its face and that is efficient running around 10-14psi.
Re: GT32 VS. GT28RS (Talonspeed)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Talonspeed »</TD></TR><TR><TD CLASS="quote">I dont want anything more than 350whp. This is going to be a daily driver, weekend warrior type car, lol.
My concers are that the Gt28RS will run out of breath on the top end. Stock cams have alot of overlap and I dont want reversion to kill my horse power.
I like the Gt32 because it is cheap!!! about $300-$400 less than a disco potato.
i want something that is going to pull all the way to redline without falling on its face and that is efficient running around 10-14psi.</TD></TR></TABLE>
your best bet would be the GT32 then..
the GT28RS is too small and will run out of steam in the top end.
My concers are that the Gt28RS will run out of breath on the top end. Stock cams have alot of overlap and I dont want reversion to kill my horse power.
I like the Gt32 because it is cheap!!! about $300-$400 less than a disco potato.
i want something that is going to pull all the way to redline without falling on its face and that is efficient running around 10-14psi.</TD></TR></TABLE>
your best bet would be the GT32 then..
the GT28RS is too small and will run out of steam in the top end.
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