My new APS TT on a Stock Block
Originally Posted by Zivman
trust me I am not wrong on this....
The turbos were originally just called a GT25/35 hybrid. Since they changed the terminology and are now called GT2871. That said, they are not a standard off the shelf 2871.
Where did you get your info from?
The turbos were originally just called a GT25/35 hybrid. Since they changed the terminology and are now called GT2871. That said, they are not a standard off the shelf 2871.
Where did you get your info from?
https://my350z.com/forum/showthread....ight=APS+turbo
Originally Posted by zerosec
check this out :
https://my350z.com/forum/showthread....ight=APS+turbo
https://my350z.com/forum/showthread....ight=APS+turbo
Originally Posted by tig488
for what its worth...
this is from a previous post by Zivman
The turbos are a hybrid GT25 turbo with a GT35 compressor housing. The original tech name for it was a GT2535R, but Garret has updates its litterature and it is now labeled as a GT2871R.
The original info on the turbos:
"The turbos are Garrett GT2535R Water-Cooled Ball-Bearing Turbochargers
It is a new hybrid speced by APS for Garrett to produce to match the VQ35DE. What the alphanumeric name means is, the turbine side uses the GT25 housing and the compressor uses a GT35 housing"
As an update, I was provided with this info....directly from APS:
APS twin turbo system are actually a GT 2871R, the turbo model terminology was changed by Garrett approx 4 months ago"
The reason you are having a difficult time finding more info from Garrett is the fact that these turbos are manufactured exclusely for APS for use in their kits.
this is from somebody else...
When David from APS visited us at Enjuku Racing, he informed us that the turbo was a GT2871R but he was using a compressor cover from that of a Skyline GT-R N1 due to the nature of the compact design that the turbo(s) required in this particular application.
this is from a previous post by Zivman
The turbos are a hybrid GT25 turbo with a GT35 compressor housing. The original tech name for it was a GT2535R, but Garret has updates its litterature and it is now labeled as a GT2871R.
The original info on the turbos:
"The turbos are Garrett GT2535R Water-Cooled Ball-Bearing Turbochargers
It is a new hybrid speced by APS for Garrett to produce to match the VQ35DE. What the alphanumeric name means is, the turbine side uses the GT25 housing and the compressor uses a GT35 housing"
As an update, I was provided with this info....directly from APS:
APS twin turbo system are actually a GT 2871R, the turbo model terminology was changed by Garrett approx 4 months ago"
The reason you are having a difficult time finding more info from Garrett is the fact that these turbos are manufactured exclusely for APS for use in their kits.
this is from somebody else...
When David from APS visited us at Enjuku Racing, he informed us that the turbo was a GT2871R but he was using a compressor cover from that of a Skyline GT-R N1 due to the nature of the compact design that the turbo(s) required in this particular application.
Originally Posted by DMK
How does this compare the the GT28 Hybrid's in JWT 850BB's?
Originally Posted by Zivman
The aps turbos are somewhere between the 530 and 700 turbos that JWT offers. so the 850's would be two steps larger, but don't really know specifics on how much larger.
Originally Posted by MadBoost
Are you sure about that? The standard APS system turbos are rated for more airflow than either the 530 or 700 kits from JWT. The APS dual GT2871r, although there are two versions of this turbo with varying compressor wheels, can put down a max of 760crank hp with the smaller compressor wheel. With the larger variant compressor it is listed at 820+ crank hp(about 42 lbs/min. airflow from each turbo). I have seen both these turbos in tt applications put out over 720rwhp, and the larger comp wheel actually making 760rwhp. The APS extreme kit uses dual GT3076r's, which also have two available compressor wheels, capable of over 960/1000+crank hp respectively. I would think the JWT 850 kit is probably using the same GT2871r turbocharger family as the regular APS system, while their 530 and 700 kits are using variants of the GT28rs "disco potato" rated at roughly 260hp and 350hp respectively from each turbo.
I think your HP numbers for the base turbos are grossly overstated for the VQ application. The highest HP numbers I have seen personally for this setup is around 615-620 whp. I know APS lists them as flowing enough for 800 bhp, which if figuring drivetrain loss, that still is a ways off of your 720 - 760 whp numbers. what type of application was it that you saw these turbos break 700 whp?
Going off the top of my head, I thought the JWT 530 turbos were basically the same turbo as the base APS turbos, but the JWT used a smaller compressor housing vs the APS's 35 housing.
Again, despite what the terminology would lead one to believe, it is hard to get a true comparison for these turbos.
Last edited by Zivman; Feb 13, 2008 at 11:36 AM.
Originally Posted by Zivman
you very well could be correct. Though I still think the APS turbos are somewhere in between the 530s and 700's... but closer to the 700 side. The problem is, the APS turbos are not off the shelf turbos, but more so a customized "mut" turbo setup. You can't use a GT2871r comparison, because while the terminology might be the same, I doubt they are truelly comparable to either of the variations you are referencing.
I think your HP numbers for the base turbos are grossly overstated for the VQ application. The highest HP numbers I have seen personally for this setup is around 615-620 whp. I know APS lists them as flowing enough for 800 bhp, which if figuring drivetrain loss, that still is a ways off of your 720 - 760 whp numbers. what type of application was it that you saw these turbos break 700 whp?
Going off the top of my head, I thought the JWT 530 turbos were basically the same turbo as the base APS turbos, but the JWT used a smaller compressor housing vs the APS's 35 housing.
Again, despite what the terminology would lead one to believe, it is hard to get a true comparison for these turbos.
I think your HP numbers for the base turbos are grossly overstated for the VQ application. The highest HP numbers I have seen personally for this setup is around 615-620 whp. I know APS lists them as flowing enough for 800 bhp, which if figuring drivetrain loss, that still is a ways off of your 720 - 760 whp numbers. what type of application was it that you saw these turbos break 700 whp?
Going off the top of my head, I thought the JWT 530 turbos were basically the same turbo as the base APS turbos, but the JWT used a smaller compressor housing vs the APS's 35 housing.
Again, despite what the terminology would lead one to believe, it is hard to get a true comparison for these turbos.
Someone might be able to correct me if I am wrong but JWT uses the 530 and 700 moniker on the z32 and z33 turbo upgrades. As it states on their site and can be matched up on Garrett, they both use a version of the 2860r cartridge which are rated at less airflow than the 2871r family. I would suspect that the JWT 850 uses a 446179-32 cartridge with a .86 A/R turbine housing which is the GT2871r family, along with APS. The APS extreme system uses a GT3076r cartridge similar to the APS C6 corvettes, of which I have 4 sitting just outside my office right now.
I'm just trying to be informative and hope I don't come off as confrontational. I think the bigger issue with the Vq35 has always been the engine build rather than the airflow potential of the APS system.
Originally Posted by MadBoost
I'm just trying to be informative and hope I don't come off as confrontational. I think the bigger issue with the Vq35 has always been the engine build rather than the airflow potential of the APS system.
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