Gcg Turbo - High Flow Rb25det

[benl1981]

What diameter is the tubbine wheel on the R33 turbo?

Anyone measured their 450hp turbo?

Also what is the compressor wheel diameter.

Cheers

[paulr33]

why not just ask them ?

[STATUS]

^ cause that would be logical

[benl1981]

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

[R31Nismoid]

They never made a 400hp one, so that answers that question

[MANWHORE]

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]

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]

The stage II was a 500hp unit.

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