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Gcg Turbo - High Flow Rb25det

benl1981

By benl1981,
in Engines & Forced Induction

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benl1981 Grand Master

benl1981

Posted
  • Author
Posted

I did - they didn't know and said they'd have to measure one.

I've already called them a few times..

Thought someone here would know straight up.

I have one here that I'm trying to determine if it is a 400hp or 450hp.

Thanks URAS - great help mate hahah

MANWHORE Grand Master

MANWHORE

Posted
Posted

ash, I believe they sort of did.

From what I understand (correct me if i'm wrong), but gcg used to have a stage 1 and stage2. The stage 2 had mass compressor surge.

I believe that the one they sell now, is some sort of compromise between the both of them.

GCG won't tell ya. That's what they do. they just go i'll check and call you back. they don't want you to know what they use.

It is pretty obvious if you have one and measure it and check it against the catalogue for sierra wheels.

paulr33 Grand Master

paulr33

Posted
Posted

have a look for a thread that compares the rb20 to rb25 turbo

i made a post in there, so search by my name

it shows the mm of both compressors

so you could find out the mm of the new hiflow one

R31Nismoid Grand Master

R31Nismoid

Posted
Posted

The stage II was a 500hp unit. :P

The compressor surge was due to the comp wheel being too large for the rear and, front wasnt spinning fast enough in the lower RPM and was surging.

Hence they stopped making it and only make the 450hp one now which is spot on the money :D

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