Jump to content
SAU Community

Recommended Posts

Ok Im looking into getting the gcg highflow turbo rated at 450hp for my rb25.

Im just wondering what kind of power people are getting out of these and are they worth the money or should I just go for a gt series turbo?

Also what is the average max power obtainable out of a set of rb25 standed injectors?

I have searched and not really found a positive answer...

Any help would be greatly appreciated,

Thanks. :burnout:

Ok I have large fmic, ems stinger 2 full after market computor, 3' exhaust from turbo, splitfire coil packs, blah blah.

Im chasing at least 300rwhp.

I want to know if this is possible on stock injectors and a gcg high flow?

I rang them and they said there $1950 is that what everyone pays?

Is their a cheaper way?

Any advice much appreciated.

Thanks.

dont pay $2000 for a high flow when you can get a GT for about $2500, high flow will give you from 220 to 250 rwkw but you will have to some extra stuff like exst, turbo back, fmic, maybe injector up grade, plus some sort of basic ECU up grade. eg piggy back.

why pay $2500 for a GT when u can pay not $2000 but $1500 for a GCG high flow which will do the same job? :(

plus the high flow will bolt on while the garrett need an adaptor plate?

370cc injector x 6=2220cc

which will support around 222rwkw @ stock fuel pressure

dont pay $2000 for a high flow when you can get a GT for about $2500,

thats retail.

tell me one person who pays retail for a turbo these days.

Most workshops dont charge you.

2.1k tops for a GT series

hi-flows are well under 2k also

anyhow, injectors. There is loads of info

200rwkw give or take and your running out. You'll need to do them if changing from stock turbo.

And its not a question of what the turbo will make, its how much power are you chasing?

thats retail.

tell me one person who pays retail for a turbo these days.

Most workshops dont charge you.

2.1k tops for a GT series

hi-flows are well under 2k also

anyhow, injectors. There is loads of info

200rwkw give or take and your running out. You'll need to do them if changing from stock turbo.

And its not a question of what the turbo will make, its how much power are you chasing?

Ok I have large fmic, ems stinger 2 full after market computor, 3' exhaust from turbo, splitfire coil packs, blah blah.

Im chasing at least 300rwhp.

I want to know if this is possible on stock injectors and a gcg high flow?

I rang them and they said there $1950 is that what everyone pays?

Is their a cheaper way?

Any advice much appreciated.

Thanks.

you can get it rebuilt with roller bearings or plain bears to make it cheaper but you are going from a ball bearing unit to whatever bearing you choose, so its probably a step backward

Ok I have large fmic, ems stinger 2 full after market computor, 3' exhaust from turbo, splitfire coil packs, blah blah.

Im chasing at least 300rwhp.

I want to know if this is possible on stock injectors and a gcg high flow?

I rang them and they said there $1950 is that what everyone pays?

Is their a cheaper way?

Any advice much appreciated.

Thanks.

I have a receipt for $2100 for my Hiflow which included a new $160 HKS actuator. If you join the Skyline Club you will get 10% discount from GCG.

I know that if you improve your fuel supply the GCG Hiflow will make minimum 320 rwhp.

If you improve your fuel supply and specify and supply a VG30 turbine housing on a GCG Hiflow you will make around 360 rwhp

All ball bearing highflows are up around 2k.

Bush bearing are a shade over 1k.

Now that GCG have started to play with the VG30 housing maybe they will bring back in their 500hp variant, previously with their 500hp highflow variant it would surge and carry on a little.

The bigger vg30 exhaust housing will eliminate this hopefully. :thumbsup:

Might even nudge 290-300rwkw IF a big IF they can get the wastegate flowing enough to prevent boost creeping through the roof. :D

One thing no ones ever mention is which type of turbo (bearings) last longer under extreme usage. I've had hiflo/rebuild last 6 months and die. When I switched to new b/b one, never had a premature failure, and my driving habits hasn't change.

300rwhp is about 224rwkw.

You should be able to get awefully close to this figure on stock injectors.

At worst a rising rate regulator may be required to bump the pressure a little.

300rwhp is easily achievable on a GCG high flow.

Hope that helps you.

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

    • Welcome to Skyline ownership. Yes, it is entirely possible parts websites get things wrong. There's a whole world of inaccuracies out there when it comes to R34 stuff (and probably 33 and 32). Lots of things that are 'just bolt on, entirely interchangable' aren't. Even between S1 and S2 R34's. Yes they have a GTT item supposedly being 296mm. This is incorrect. I would call whoever you got them from and return them and let them know the GTT actually uses 310mm rotors. Depending on where you got them from your experience and success will obviously vary.
    • Hi...a bit a "development" on the brakes. I spoke to the guys where i get brakes from...and they are saying that 296mm EBC are for R34 GT-T. I then went to their site: https://www.ebcbrakes.com/vehicle/uk-row/NISSAN/Skyline (R34)/ and search for my car(R34 GT 1998 - it has GTT brakes) and it show me this USR1229 number and they are rly 296mm rotors... So now iam rly confused... The rotors i have now on the car are 310mm asi shown... So where is the problem? Does the whole EBC got it wrong or my calipers are just...idk know what?  
    • Oh What the hell, I used to get a "are you sure you want to reply, this thread is XX months old" message. Maybe a software update remove that. My bad.
    • This is a recipe for disaster* Note: Disaster is relative. The thing that often gets lost in threads like this is what is considered acceptable poke and compromise between what one person considers 'good' looks and what someone else does. The quoted specs would sit absurdly outside the guards with the spacers mentioned and need  REALLY thin tyres and a LOT of camber AND rolling the guards to fit. Some people love this. Some people consider this a ruined car. One thing is for certain though, rolling the guards is pretty much mandatory for any 'good' fitment (of either variety). It is often the difference between any fitment remotely close to the guards. "Not to mention the rears were like a mm from hitting the coilovers." I have a question though - This spec is VERY close to what I was planning to buy relative to the inboard suspension - I have an offset measuring tool on the way to confirm it. When you say "like a mm" do you mean literally 1mm? Or 2mm? Cause that's enough clearance for me in the rear :p I actually found the more limiting factor ISNT the coilover but the actual suspension arms. Did you take a look at how close those were?
    • @GTSBoy yeah sorry i know thery are known for colors bud those DBA are too in colors 🙂 Green will be good enough for me  
×
×
  • Create New...