Urgent Gcg Stage 1 Turbo Question

[silver gts-t]

what i would like to know is the specs on this turbo

and how it would perform on a rb20 if possible as they told me the r33 and 32 hiflows differ

or even when it hits full boost..??

called GCG and supposedly they didnt know specs!?!?

thanks

[Blitz]

What are they charging for this turbo thesedays John?

I would be interested to see how a GT-RS would perform on an RB20

[silver gts-t]

$1900 for a hi-flow

[Blitz]

Not far off the price of a GT-RS

Im looking at turbo options for my R32 at the moment also

[silver gts-t]

Not far off the price of a GT-RS

Im looking at turbo options for my R32 at the moment also

<{POST_SNAPBACK}>

the hi flow is also much more convenient..

ie bolt on

[Abo Bob]

Surely a GT-RS is too big.

[Sydneykid]

what i would like to know is the specs on this turbo

and how it would perform on a rb20 if possible as they told me the r33 and 32 hiflows differ

or even when it hits full boost..??

called GCG and supposedly they didnt know specs!?!?

thanks

<{POST_SNAPBACK}>

We had a GCG ball bearing high flow on an RB20DET (170,000 ks' old), made 225 rwkw at 1.3 bar with 1 bar at 3,000 rpm, no boost drop off till 7,500 rpm, made good power to 8,250 rpm. Highly recommended.

cheers

[silver gts-t]

they told me that the rb20 and 25 hi flows are different..

this true?

and if so i would think boost would come on later..

[yogi000]

1bar @ 3000rpm. Thats very impressive in my books

[CEF11E]

yes but the RB20 and RB25 compressor housings are going to perform differently.

so if you use an RB20 turbo instead of an rb25 to start with you will have boost earlier but peak earlier...

Edited December 1, 2005 by CEF11E

[Sydneykid]

yes but the RB20 and RB25  compressor housings are going to perform differently.

so if you use an RB20 turbo instead of an rb25 to start with you will have boost earlier but peak earlier...

<{POST_SNAPBACK}>

Correct, but the difference is not dramatic, I don't think it would be more than 250 rpm later to 1 bar with the R33/RB25 turbo. The R34/VG30 turbine covers wouldn't be my choice, another 500 rpm or so I reckon.

cheers

[Sydneykid]

called GCG and supposedly they didnt know specs!?!?

They know the specs very well :lol: , they just don't want anyone else to know.

cheers

[predator]

We had a GCG ball bearing high flow on an RB20DET (170,000 ks' old), made 225 rwkw at 1.3 bar with 1 bar at 3,000 rpm, no boost drop off till 7,500 rpm, made good power to 8,250 rpm. Highly recommended.

what were the other support mods?

[NathR32]

what were the other support mods?

<{POST_SNAPBACK}>

I'm very interested to know as well. Currently looking into options for a turbo upgrade for my 32.

Nath

[silver gts-t]

well, ill let you know how i go early january when i finish my tune

mods:-

- full 3" exhaust

- walbro fuel pump

- gtr injectors

- Z32 AFM

- remapped ECU

- FMIC

- bleed valve

- K&N pod

and adding the gcg stage 1 high flow within the next 2 weeks

[Sydneykid]

what were the other support mods?

<{POST_SNAPBACK}>

Let me think;

POD, heat shield, substantial air feed

Performance metalcraft split dump

3.25" Nismo exhaust

No cat

OS Giken twin plate with flywheel

No HICAS

No aircon

Electric fan

Power FC with BCK

Castrol 10W60 oil

Oil cooler

Optimax

NGK copper plugs

One full day tuning on the dyno (plenty of time spent around the boost build rpm)

All on a 170,000 k's old RB20DET, that showed OK leak down figures for its age

cheers

[AntonRx7]

i only made 254 hp at the wheels with stage 2 r33 hiflow turbo. This was on an auto r32 mods:

pod

3inch exhaust no cat

FMIC

z32 AFM

gtr injector 040 fuel pump

Have had the standard computer chiped (Romed)

Oh and mine is very laggy

[silver gts-t]

i only made 254 hp at the wheels with stage 2 r33 hiflow turbo. This was on an auto r32 mods:

pod

3inch exhaust no cat

FMIC

z32 AFM

gtr injector 040 fuel pump

Have had the standard computer chiped (Romed)

Oh and mine is very laggy

<{POST_SNAPBACK}>

i almost made that power with just an rb25 turbo..

get your car looked at i think

[predator]

I agree.. i have an auto r32 with rb25 highflow (not gcg however) and checked today the revs vs boost, and its making 12psi (tubotech controller) by 3800rpm.. without any proper tune. No idea of power at the moment.

Tune coming tuesday for some figures.

[nF]

this is a good read

got a gcg hi-flow rb25 turbo going on my r32 now

other mods include 550cc injectors and powerfc and the usual kinda shit

i'll watch this thread and post results when/if i get them