Gt35r Downsizing

[blow thru]

Hey guys i just brought my first r32 gts-t i was wondering which turbo would be my best choice. it already has a gt35r on it an its a laggy as f*k it starts to make boost around 4300 an full boost around 4600.car has wolf3d, larger unkown injectors sard fuel reg.custom turbo manifold with external gate etc etc.After around 200-230kw.what would be an ideal turbo that makes boost around 3000? any thoughts would be greatly appreciated.

[Adriano]

rb25 turbo, should be able to make 220rwkw with your mods

[DRD-00F]

Have you driven a car with that much? That turbo is rated for 300+ kws or so... that's a big drop down!

I have a VG30 turbo lieing around (slightly better then an RB25 turbo)... you could highflow it for around 220 - 230kws...

[Douse]

Don't think you will get 220-230 with a RB25 turbo.....Maybe if it was high flowed..

[SDEWY5]

hah....thats ridiculous, come on hard but when it hits boost?

[joeyjoejoejuniorshabadoo]

stock rb25 turbo will NOT make 220rwkw on an rb25 let alone a 20

[NYTSKY]

If you are only aiming for 230rwkw i would suggest a GT2871.

But trust me you will be wanting more in the future so get a GT3076

[The Bogan]

You might be able to lower the rpm to boost with adjustable cam gears, a little bit anyway, that would be a cheaper option than replacing a turbo.

I think, LOL.

[blow thru]

NYTSKY mate i was thinking along the lines of a gt30 when do they start to make boost?a lot of people on here seem to be using hks GT 2530. Mlr mate with the cam gears what sort of rpm do u think this would lower the boost range by? thanks

[Adriano]

Plenty of people have made over 200rwkw with an rb25 turbo, and at that power level being an rb20 doesnt make a difference, just takes more revs to do it.

[The Bogan]

Not sure mate, I'm looking into this as I'm having the same thing going on with mine, rb25 with gt35, tuner recons it will drop between 250 to 500 rpm.

Not doing this though till next year when its going in for a rebuild so no answer on this for a while from me, sorry.

I'm sure someone on here could give you a definitive answer.

[blow thru]

Not sure mate, I'm looking into this as I'm having the same thing going on with mine, rb25 with gt35, tuner recons it will drop between 250 to 500 rpm.

Not doing this though till next year when its going in for a rebuild so no answer on this for a while from me, sorry.

I'm sure someone on here could give you a definitive answer.

Yeah i will do some searches on that an thanks man.

[blow thru]

Spoke to ray hall an he suggested i replace the .82 rear to a .63 to bring on boost earlier. Put this on then get a tune an see how it goes...

[STATUS]

3076, td06L2-20g or ATR28

[Billet Ricky]

Unbiased opinion.

GT3076R would be good choice

But if it was me I could not go past the Billet S56-GT3 with .63 A/R hot side.

The S56-GT3 specs are pretty dam good

The S56 compressor wheel has a 56mm inducer and 80mm Major + (ETT).

Turbine has an exducer of 56.6mm and a major of 65mm and is made of 713C Inconel

Compressor map

Turbine.

[zebra]

lol...i thought u got banned for flogging off Billet Turbo stuff??

[Roy]

2871 or 3071R if you only want 230odd rwkws. Personally i would go for the 3071 as it will go close to being a bolt on solution, but no matter how small the turbo is you will make meaningful boost at 3000rpm on an RB20