PDA

View Full Version : GT2871R efficiency rating

pretzel king
05-31-2005, 08:09 PM
anyone know???? and the max cfm? i searched many sites that list all the specs but i couldnt find any of them that listed this stuff.

Thanks
sr240mike
05-31-2005, 08:28 PM
If you know how to read and plot on compressor maps its on there Garrett's website. There are a few different trims and a/r options, here's a link. http://www.turbobygarrett.com/turbobygarrett/catelog/Turbochargers/GT28/GT2871R_472560_15.htm
boosteds13
05-31-2005, 08:47 PM
anyone know???? and the max cfm? i searched many sites that list all the specs but i couldnt find any of them that listed this stuff.

Thanks

It's a 44 lb/min compressor wheel so that translates to about 582CFM. What kind of specs are you looking for? I mean the important stuff is already out there.
pretzel king
05-31-2005, 08:59 PM
It's a 44 lb/min compressor wheel so that translates to about 582CFM. What kind of specs are you looking for? I mean the important stuff is already out there.

i was looking for something between the .64 and .86. but really i was looking to see what the max boost was. so i was basically looking for as much information as i could find. i intended on running 16-18 all day 20 psi drag. thats the only reason i asked thanks for the info



thanks srmike :hsdance:
boosteds13
05-31-2005, 09:58 PM
i was looking for something between the .64 and .86. but really i was looking to see what the max boost was. so i was basically looking for as much information as i could find. i intended on running 16-18 all day 20 psi drag. thats the only reason i asked thanks for the info



thanks srmike :hsdance:

The turbo can push 20 pounds with ease. The .64 will give you a little help with spoolup while sacrificing some top end. I assume this is for an SR? Without cams and an intake manifold such as the greddy, you may as well go for the .64 as once you start making around 340-350 to the wheels, the stock manifold and cams become a hinderance.
pretzel king
05-31-2005, 10:04 PM
The turbo can push 20 pounds with ease. The .64 will give you a little help with spoolup while sacrificing some top end. I assume this is for an SR? Without cams and an intake manifold such as the greddy, you may as well go for the .64 as once you start making around 340-350 to the wheels, the stock manifold and cams become a hinderance.


yep its a s14 vvti sr20, stage 2 hks cams, cam gears, turbo manifold, front mount, under drive pulleys, fuel pump, fpr, 550 injectors. but i dont have a intake manifold.... :-/ i was thinkin the .86 since i have the larger cams what do you think???
boosteds13
05-31-2005, 11:35 PM
yep its a s14 vvti sr20, stage 2 hks cams, cam gears, turbo manifold, front mount, under drive pulleys, fuel pump, fpr, 550 injectors. but i dont have a intake manifold.... :-/ i was thinkin the .86 since i have the larger cams what do you think???

Well, the .86 will still work. But I think your biggest hurdle now will be your injectors. Running at a duty cycle of around 80-85%, you start running out of flow at 350whp for 550s. Get yourself some 650s and an intake manifold and with some good tuning, you should be able to hit ~380+ on the .86 2871R.
codyace
06-01-2005, 02:27 AM
With JWT s3 cams, a full 3" exhaust, Greddy Intake Mani, extrude honed OEM manifold and turbine housing, front mount IC setup, walbro255, cobra maf and 72lbs injectors....would you believe that combination elimate the lag/boost onset that the .86 has to make it act much like the .64???
Rich Druash
06-02-2005, 03:32 PM
think jgy customs has lbs/min ratings for both trims, nice turbo
boosteds13
06-02-2005, 04:30 PM
think jgy customs has lbs/min ratings for both trims, nice turbo

What? The compressor wheels are the same and rated at 44 lbs/min. The difference is the size of the turbine housing. Only reason the .86 can make more power is the turbine housing is freer flowing as to not choke up the turbo in the upper RPMs.