Gt3582bb On A Rb25det

[Quicksilver_Supra]

Hi.

I'm thinking of changing my GT3037R turbo to a GT3582BB .82A/R (Aka GT3540), I use 272in/264Exh cams, greddy intake++ and the rest of the engine is fully built. The GT3037R made 430Rwhp at 1.3 bar, that was with an SSauto exhaust manifold, now I have a 6boost manifold and a Turbosmart 45mm WG that will go on along with the GT35...

Anybody here that use the GT35 on a RB25? When will I see full boost?

[r33_racer]

with our old rb25 with 256 poncams and usual mods full boost was around 4300-4500 that was about 1.3 bar.

[Quicksilver_Supra]

with our old rb25 with 256 poncams and usual mods full boost was around 4300-4500 that was about 1.3 bar.

What kind of Hp/Nm did you get with that setup @ what boost level?

[Busky2k]

dangerman4 has a huge thread about his GT3540R. However he's got an auto and also internally wastegated.

[Quicksilver_Supra]

I think I have read that tread..

I found this post by Hyper33:

1994 GTS-T S1

Power FC

Tomei Poncams (rest stock internals)

Sard 850cc Injectors

FMIC

Sard FPR

GT3540R .82 EXH on high mount

Turbosmart 48mm progate wastegate

Bosch 044

Z32 AFM

BP Ultimate fuel

full exhaust mods from turbo

Pod filter

15psi boost

410.7rwhp (306rwkw)

Do you have the Ft-pund/Nm figures from this pull?

[r33_racer]

dont know the torque nor do i have a dyno sheet but it made 360rwhp on 18psi.

Id love to know how he made 410rwhp on 15psi.

[Busky2k]

Well its actually 13psi at peak power. Interesting indeed. Although the intake temps on the shootout sheet are a bit high at 48C.

No doubt the 0.82 housing with a GT35 turbine is very efficient too for the power level.

[Quicksilver_Supra]

I made 315Rwkw (430rwhp) at 18PSI (on a Dynopack) with a GT3037R so 410Rwhp with a GT3540 shuld be right,

[discopotato03]

Can you tell us which exhaust housing your GT3037R has please , sounds like a HKS version and I'm curious to know the exhaust housings AR ratio and mount flange style ie T25 or T3 .

Also the 3037 was available in three compressor trims of which the 56T is common and the 52T not so common . The 48T version must be rare as . The highest spec version will be the 56T and HKS's exhaust housings went up to 1.12AR ratio . As I said recently I'm not sure if they still sell non gated exhaust housings in T3 flange but the T28 flanged ones are still available .

If your not using the larger/est housings available you won't get the most from a GT3037 . Some of the response problem with the GT3582R is the extra innertia to overcome from the larger diametre turbine but its needed to drive the larger diametre compressor . The only other available non hybridised off the shelf turbo from Garrett is the HKS specific GT3240 , this is a modified GT3582R , its had its turbine cropped and its compressor trim is 82mm GT40 in 54 trim vs the GT3582R's 56 trim . I've only ever seen them with a .87AR T25 flanged HKS exhaust housing , these will be an expensive option but is money is no object ....

Cheers A .

[MR331307]

I made 315Rwkw (430rwhp) at 18PSI (on a Dynopack) with a GT3037R so 410Rwhp with a GT3540 shuld be right,

Depends how agressive you want the Tune

I made 502 rwhp on 18 psi and run 10.8 @ 129 mph

Ive got customers cars running around with Gt35/40`s making 430 rwhp all day everyday on pump fuel @ 18psi

[Quicksilver_Supra]

Can you tell us which exhaust housing your GT3037R has please , sounds like a HKS version and I'm curious to know the exhaust housings AR ratio and mount flange style ie T25 or T3 .

Also the 3037 was available in three compressor trims of which the 56T is common and the 52T not so common . The 48T version must be rare as . The highest spec version will be the 56T and HKS's exhaust housings went up to 1.12AR ratio . As I said recently I'm not sure if they still sell non gated exhaust housings in T3 flange but the T28 flanged ones are still available .

If your not using the larger/est housings available you won't get the most from a GT3037 . Some of the response problem with the GT3582R is the extra innertia to overcome from the larger diametre turbine but its needed to drive the larger diametre compressor . The only other available non hybridised off the shelf turbo from Garrett is the HKS specific GT3240 , this is a modified GT3582R , its had its turbine cropped and its compressor trim is 82mm GT40 in 54 trim vs the GT3582R's 56 trim . I've only ever seen them with a .87AR T25 flanged HKS exhaust housing , these will be an expensive option but is money is no object ....

Cheers A .

I have the T3 0.96 it think (it is over .90), I bought it from Horsepowerinabox, it has a AR 60 compressor house and antisurge

[discopotato03]

Hmm , I don't think Garrett or HKS made any .9x exhaust housings for the GT30 BB cartridge . Do you have any pics of it ?

Cheers A .

[Quicksilver_Supra]

I dobbel checked my order from when I bought it and it was a .82 house that I have on my GT3037R "it is also calld GT3076R same turbo several part number references"

Edited November 5, 2006 by Quicksilver_Supra

[al_r33]

I just put a GT3076r with 0.82 ar on my rb25! And its getting tuned 2moro. So i will let you know how it goes!

[discopotato03]

I dobbel checked my order from when I bought it and it was a .82 house that I have on my GT3037R "it is also calld GT3076R same turbo several part number references"

Yes the GT3037 56T and Garretts GT3076R use the same cartridge/wheels so compressor must be 56 trim .

Turbo number should be 700382-12 and CHRA no 700177-0007 or -5007 .

In the first pic the tag was badly stamped "30037" - should read 3037 .

The second pics says 700382-11 because of different housing options used by HKS .

Cheers A .

Edited November 5, 2006 by discopotato03