I am trying to put a little over 400 horsepower down to the ground. I talked to someone who works for a company that sells Garrett turbo's and he reccommended to me the GT2871R, GT3071R, or the GT3071R with the 28 compressor housing. And that is what I ahve a question about. What is the purpose of or should I say what are the advantages of puting a GT28R compressor on the GT3071R?
Question about the garrett GT3071R....
http://www.turbobygarrett.com/....html
Basicly a 2871 64ar spools faster than a 3071 64 ar but moves less air than the 3071. Your not gonna get 400hp by just slapping a turbo on a 240 without intake exhaust manifolds, and cams the sr motor usually hits a 340hp block without those mods. jYou cant shove 100 gals of water a minute through a straw.
Basicly a 2871 64ar spools faster than a 3071 64 ar but moves less air than the 3071. Your not gonna get 400hp by just slapping a turbo on a 240 without intake exhaust manifolds, and cams the sr motor usually hits a 340hp block without those mods. jYou cant shove 100 gals of water a minute through a straw.
Re: (tgm)
OK......my question was what is the purpose of putting a GT2871R compressor "housing" on the GT3071R, not the wheel. It just didnt make any sense to me at all and I was trying to find out why people do that? Is it just to make the turbo look smaller?
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Nismo_Freak
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Re: (zippitta)
Faster boost response, kinda just the same as an exhaust housing but not quite the same effect. It also has the side effect of altering the efficiency islands of the compressor wheel.zippitta wrote: OK......my question was what is the purpose of putting a GT2871R compressor "housing" on the GT3071R, not the wheel. It just didnt make any sense to me at all and I was trying to find out why people do that? Is it just to make the turbo look smaller?
I would go for the GT3071R in the smaller A/R for this power level. The GT2871R can push over 400whp but you are really pushing the turbo to it's limit. I would rather have a turbo that can more efficiently handle the stress.
Re: (Nismo_Freak)
thank you nismo_freak. I really appreciate it.
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Alfa Turbo
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Re: (VitaminT)
The GT3071R is available with 3 turbine wheels.
84 trim for the T2 .6490 trim for the T2 .86And the original wheel which is an 84 trim (different sized in./ex. than the T2 vesion), for the T3 housing.
The best flowing and most responsive is the the T3 wheel in the GT housing.
You can reach your 400WHP in several ways... both would require improving total VE by a combination of head work, cams, exhaust etc. A T3 version would make it at a lower boost pressure relative to a T2 version. If your budget allows, I would suggest going T3 and using the GT housing or a machined T31 and a 3" DP.
84 trim for the T2 .6490 trim for the T2 .86And the original wheel which is an 84 trim (different sized in./ex. than the T2 vesion), for the T3 housing.
The best flowing and most responsive is the the T3 wheel in the GT housing.
You can reach your 400WHP in several ways... both would require improving total VE by a combination of head work, cams, exhaust etc. A T3 version would make it at a lower boost pressure relative to a T2 version. If your budget allows, I would suggest going T3 and using the GT housing or a machined T31 and a 3" DP.