GCG High Flow Turbo

[DREMEN]

Hi,

I am currently looking into getting GCG to high flow my current turbo (R33 GTS25T).

This high flow involves:

Turbine Wheel - replaced and upgraded with a inconel(steel) wheel , either stage 1 or 2

Compressor Wheel - replaced and upgraded with T04 wheel, either stage 1 or 2

Bearing Pack - replace with an XTR ball bearing package

Turbine Housing - machine to accept either of the larger wheels

Compressor Housing - machined to accept either of the larger hi flow wheels

Wastegate Actuator - standard or upgradeable to have higher boost pressure as standard.

There are two stages:

Stage 1 = $2250.00 Rated @ 400hp

Stage 2 = $2450.00 Rated @ 450hp, does require other mods i.e. intercooler, fuel, etc

My goal is 250rwkw. Do you think that this highflow turbo will handle this power?

Should I go for the 400hp or 450hp solution?

Has anyone else had their turbo highflowed?

Thanks in advance

[sidewaymambo]

I don't have experience with GCG, however to get the power goal you do need more mods then just intercooler or fuel..Do you consider any after market computer?

At 250rwkw, before that, you will hit the limit of your stock fuel system (injectors and pump) and AFM...there are lots of discussion post before, B-man have experience and similar to this setup.

[DREMEN]

Yes I will be upgrading the fuel pump, getting a powerFC and also the injectors.

I already have the FMIC.

But I just want to know about the turbo and if it will be efficient for 250rwkw

[sidewaymambo]

It's better to ring GCG, and ask for a garranty for the power goal.

and here

[Ustasa]

Is it an inconel or steel turbine wheel? They are two different materials with inconel being the superior one.

Just make sure they upgrade the turbine and match it with the compressor wheel. We’ve had 2 r33’s with mismatched turbo’s and one surged so badly I thought the compressor wheel was going to disintegrate.

As for your question, go for the 450hp version. Always handy to have some spare airflow potential in your turbo

[Edge]

what size is the largest inconel turbine wheel I can fit with this?

Where or what turbo do the inconel turbine wheels come from?

And with the above largest inconel turbine wheel - what size compressor wheel is best?

[Cubes]

Make sure it is tuned safe.. Don't push the package so to speak otherwise you will have a blowen motor.

[Guest INASNT]

only problem with the gcg stuff is that u have to pay them $2400 for the new turbo plus u gotta give em your old one. So it really costs u $2900 coz u loose the resale value of your old turbo.

[Cubes]

Thats one way of looking at it that I never really looked at.

Local turbo builders in adelaide have the same deal though.

Buying new garret I suppose would be around the same price possibly.. >

I guess the only bonus is that they perform well if you were going to use your old housing essentially.

I remember looking around adelaide and finding it hard to find a builder that will make 240-300rwkw from a stock housing.

Then again there is whatsisnames turbo.. Origionally making 216rwkw with 13psi moving up to 257rwkw still on 13psi.

[Jay95R33]

Originally posted by INASNT

only problem with the gcg stuff is that u have to pay them $2400 for the new turbo plus u gotta give em your old one. So it really costs u $2900 coz u loose the resale value of your old turbo.

Wow - is that right !! Sort of makes you think about it hay....

That's the problem. Do you get a 2535 for $2400 and sell your old turbo for $4-500, or go a highflow for $2400 exchange..

I still don't like the idea of running high boost. It's a shame the HKS's don't start doing much until your over 13psi

I wish Matt (Whatsisname) knew the specs on his turbo.. 253rwkw on 13psi !!! OMG :eek: :eek:

[Cubes]

HKS are way to expensive unless you go second hand. I've had a bad run with imported second hand turbo's.. Bearings with rust spots (crunchy) on them.

[walkoau]

gcg do good work. we use them to build our turbos at work!

they do a lot of truck and industrial turbos as well. i recomend them.

[Cubes]

How about this?

A GT30-45 with the following:

Turbine bypassing valving-single or dual bypass

Boreless compressor wheel technology

Mixed flow turbine stage

Electronic bypass flow control

Ball bearing technology

Variable geometry turbine (VNT) flow control

GT30V-GT45V double axle vane configuration

Advanced VNT concept technology available

VNT looks interesting

[Cubes]

Another bonus with using your old housing is that you don't have to modify exhaust/intake.

[Steve]

Just buy a HKS turbo, they're not too expensive and you know they work - really, really well.

[Cubes]

New they are over 4k...

[Edge]

Need you to recommend size of blades - ie. whether GCG have the right idea with their 57mm sierra blade combo?

[Guest INASNT]

Originally posted by -Joel-

New they are over 4k...

They aint that expensive if you buy direct from japan.

U can get the new hks 2835 pro s internal gated with the T3 flange for $3100 from japan. I been trying to get ifo if it will fit in the stock location even tho its the T3 flange coz of the size of the housing on it. I just got the quote a few days ago from greenline.

[DREMEN]

Yeah but its too much mucking around going for a HKS turbo.

I am unsure if most of these turbos will fit in the stock location

Thats why I think the high flow idea is better..

Australian manufacturer, warranty, etc.....

[Guest INASNT]

Originally posted by DREMEN

Yeah but its too much mucking around going for a HKS turbo.

I am unsure if most of these turbos will fit in the stock location

Thats why I think the high flow idea is better..

Australian manufacturer, warranty, etc.....

its actually quite easy, pay the $$ and in about 7-10 days u will have it at your door step!

And with HKS u know its gonna work and work well!! Just the finish of their stuff is awesome