Jump to content
SAU Community

Recommended Posts

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

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.

:P cheers :)

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 by 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...

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.

:D cheers :D

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?

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

what were the other support mods?

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 :P

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

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

get your car looked at i think

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.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • There's plenty of OEM steering arms that are bolted on. Not in the same fashion/orientation as that one, to be sure, but still. Examples of what I'm thinking of would use holes like the ones that have the downward facing studs on the GTR uprights (down the bottom end, under the driveshaft opening, near the lower balljoint) and bolt a steering arm on using only 2 bolts that would be somewhat similarly in shear as these you're complainig about. I reckon old Holdens did that, and I've never seen a broken one of those.
    • Let's be honest, most of the people designing parts like the above, aren't engineers. Sometimes they come from disciplines that gives them more qualitative feel for design than quantitive, however, plenty of them have just picked up a license to Fusion and started making things. And that's the honest part about the majority of these guys making parts like that, they don't have huge R&D teams and heaps of time or experience working out the numbers on it. Shit, most smaller teams that do have real engineers still roll with "yeah, it should be okay, and does the job, let's make them and just see"...   The smaller guys like KiwiCNC, aren't the likes of Bosch etc with proper engineering procedures, and oversights, and sign off. As such, it's why they can produce a product to market a lot quicker, but it always comes back to, question it all.   I'm still not a fan of that bolt on piece. Why not just machine it all in one go? With the right design it's possible. The only reason I can see is if they want different heights/length for the tie rod to bolt to. And if they have the cncs themselves,they can easily offer that exact feature, and just machine it all in one go. 
    • The roof is wrapped
    • This is how I last did this when I had a master cylinder fail and introduce air. Bleed before first stage, go oh shit through first stage, bleed at end of first stage, go oh shit through second stage, bleed at end of second stage, go oh shit through third stage, bleed at end of third stage, go oh shit through fourth stage, bleed at lunch, go oh shit through fifth stage, bleed at end of fifth stage, go oh shit through sixth stage....you get the idea. It did come good in the end. My Topdon scan tool can bleed the HY51 and V37, but it doesn't have a consult connector and I don't have an R34 to check that on. I think finding a tool in an Australian workshop other than Nissan that can bleed an R34 will be like rocking horse poo. No way will a generic ODB tool do it.
    • Hmm. Perhaps not the same engineers. The OE Nissan engineers did not forsee a future with spacers pushing the tie rod force application further away from the steering arm and creating that torque. The failures are happening since the advent of those things, and some 30 years after they designed the uprights. So latent casting deficiencies, 30+ yrs of wear and tear, + unexpected usage could quite easily = unforeseen failure. Meanwhile, the engineers who are designing the billet CNC or fabricated uprights are also designing, for the same parts makers, the correction tie rod ends. And they are designing and building these with motorsport (or, at the very least, the meth addled antics of drifters) in mind. So I would hope (in fact, I would expect) that their design work included the offset of that steering force. Doesn't mean that it is not totally valid to ask the question of them, before committing $$.
×
×
  • Create New...