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Forced Induction Turbochargers and Superchargers..Got Boost?

A little new but I have some piston and turbo Q's

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Old Oct 11, 2011 | 10:03 AM
  #21  
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Originally Posted by 94ttz32
I was thinking of the gt2871 But was not sure How they would work on the vq They are shitty on the vg30dett They are real laggy and power band is not that fat! Im looking for something That would maybe make 650whp after cams and some other mods!. Im looking for full boost by 3400-3800 rpms. I have a 700 hp Vgdett now I have hks 2530 (Aka modded 2860rs) So I was hoping that the 2860 would were well with the vq Maybe spool a little fast than my vg which gets full boost at 3800 And will lay 700whp.

TELL me which way you would go and why or more info oh how the 2871 work for you spool time and such etc
Thanks
PM sent, i don't wanna threadjack with my graph, but i think for built block GT2871s is as small as you need to go. The TQ is already so instant you cant get traction in 3rd (with a 3.3FD) given im on street tires, but i can't run DRs all the time because I like driving my car everyday.

600rwhp is a fairly common # around here, if you are willing to settle for 600rwhp and quick spool then go with 2871s, if you are dead set on 700rwhp then i would go with GT3076 its not *that* much laggier and can make 700rwhp easily. Not saying the 2871s won't, but they are pretty much maxed out.
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Old Oct 11, 2011 | 10:08 AM
  #22  
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Originally Posted by rh_334
PM sent, i don't wanna threadjack with my graph, but i think for built block GT2871s is as small as you need to go. The TQ is already so instant you cant get traction in 3rd (with a 3.3FD) given im on street tires, but i can't run DRs all the time because I like driving my car everyday.

600rwhp is a fairly common # around here, if you are willing to settle for 600rwhp and quick spool then go with 2871s, if you are dead set on 700rwhp then i would go with GT3076 its not *that* much laggier and can make 700rwhp easily. Not saying the 2871s won't, but they are pretty much maxed out.
i heard the 3076's are very laggy dont hit max spool till about 4800 ish from a few tuners who have used them
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Old Oct 11, 2011 | 10:10 AM
  #23  
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Originally Posted by ace32x
i heard the 3076's are very laggy dont hit max spool till about 4800 ish from a few tuners who have used them
Relative to some Z32s ive driven at similar power, they aren't. But compared to my 28s yea they spool 3-400 rpm later.

EDIT: i retract that statement, APS Extreme cars dont seem quite this laggy, but when overlayed this is what they look like. My car with true 2871s .86 hot side vs APS Extreme GT3076 with tiny housings

Last edited by rh_334; Oct 11, 2011 at 10:22 AM.
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Old Oct 11, 2011 | 10:36 AM
  #24  
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Originally Posted by rh_334
Relative to some Z32s ive driven at similar power, they aren't. But compared to my 28s yea they spool 3-400 rpm later.

EDIT: i retract that statement, APS Extreme cars dont seem quite this laggy, but when overlayed this is what they look like. My car with true 2871s .86 hot side vs APS Extreme GT3076 with tiny housings
the 2871's making 500whp 1k less rpm then the 30's, i wouldnt run the 30s with out some big cams or a stroker, powers not that readily available the 2871's with the bigger hotside so much fun because all your powers there and ready down alot lower and you get alot bigger powerband
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Old Oct 11, 2011 | 01:49 PM
  #25  
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Yes agreed . That dyno looks nice 460-470 whp by 4000rpms nice . I see its floating a little up top . Just wondering why!
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Old Oct 11, 2011 | 02:02 PM
  #26  
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Originally Posted by 94ttz32
Yes agreed . That dyno looks nice 460-470 whp by 4000rpms nice . I see its floating a little up top . Just wondering why!
turbines maxed out up top, they peak 650-700 cant flow anymore
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Old Oct 11, 2011 | 04:54 PM
  #27  
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Originally Posted by ace32x
turbines maxed out up top, they peak 650-700 cant flow anymore
Oh ok im learning some more here. On a 3.0lt the 2871 will make over 700 So is the .5 litter displacement cause it to be outs it range just wonderin bare with me here
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Old Oct 11, 2011 | 05:07 PM
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Originally Posted by 94ttz32
Oh ok im learning some more here. On a 3.0lt the 2871 will make over 700 So is the .5 litter displacement cause it to be outs it range just wonderin bare with me here
Just depends on fuel and supporting mods. I'm shooting to break 700 whp with the 2871's with the .86 ar with my build. we'll see though
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Old Oct 11, 2011 | 05:11 PM
  #29  
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how do you plan on doing that considering those are the same turbos used by RH334 that you said were maxxed out? If they are really turbine limited as you suggest, more displacement is just gonna have them choking sooner and making hot air, not power, esp with tiny T25 housings.

Last edited by str8dum1; Oct 11, 2011 at 05:16 PM.
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Old Oct 11, 2011 | 05:25 PM
  #30  
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Originally Posted by str8dum1
how do you plan on doing that considering those are the same turbos used by RH334 that you said were maxxed out? If they are really turbine limited as you suggest, more displacement is just gonna have them choking sooner and making hot air, not power, esp with tiny T25 housings.
HR's tend to make more hp/ per psi than DE's and Rev ups. hoping thats enough to squueze another 2 or 3 hp out per psi to get me up around 700. also im not privy to his build so im not sure what hes running in comparison. if mine doesnt make 700 i wont be be surprised. im sure itl max out somewhere between 630-710. just hopinh for the latter of those

Last edited by ace32x; Oct 11, 2011 at 05:27 PM.
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