GCG Hiflow Hybrid on R33 GTS-t

[GTRgeoff]

:Oops: Let's not tell everyone of the secret weapon.

Close to finalising the new model but damn it takes some time and investment.

[Al]

I have just heard that the std VL turbo exhaust housing is almost identical to the VG30. T3 flange .63 a/r. I was told there was a slight differance, can't remember what, but would not effect the operation and mounting of the turbo. The flange on the dump pipe is different though, thus a custom dump whould be required.

Can someone in the know confirm/reject this theory, please?

Can the std VL housing be used, instead of the VG30?

[Bass Junky]

Al, somebody said that to me too, but because the exhaust flange is different, it would make it a pain in the butt to get custom parts made up.

I can't confirm 100% though.

I have a guy who thinks he may have a couple for us though. VG30DET that is.

[Al]

Great, I still would prefer the VG30det turbo exhaust housing.

But if i am unable to get one, i still have my 3.5" front pipe from my previous exhaust so all i need to do is get a dump pipe made up at my local exhaust shop, no big deal really .

[Cubes]

I was always under the impression the VG30DET housing was a .82 and the RB20/25 turbine housing a .64?

EDIT: Apparently its the VG30ET housing thats a .63. Not the DET.

[S3_Girl]

The Vg housing is a .81, i searched 6 mnths for one, and eventually paid $50

The vl is a .64 from memory.

cheers

darren

[Bass Junky]

S3-Girl.

Where did you find one?

[Cubes]

I picked mine up last night.. whahahah.

I managed to pick up a second handy one that apparently works (it feels and looks in good nick) for $300.

Thanks for not cutting my lunch Bass Junky. lol

I'm starting to doubt it is in fact a .81 or there abouts.

I've got a what was meant to be a .82 ARB GT35R machined housing. The GT35R housing is quite a bit bigger.

I'll have to find out how to measure the a/r and well... Measure it!

[Bass Junky]

NP Cubes.

I'm still looking for one, so if somebody comes by one, let me know.

[Cubes]

I know D1 Garage does them for $550. He sounds flexible on price.

[Bass Junky]

I spoke to them and they said they didn't have any....

[discopotato03]

Area to radius ratio is difficult to measure without sectioning (cutting up) the casting . These Hitachi housings never had the ARR size cast into them like Garrett's housings do . My impression looking at all three is RB20 type = miniscule

, RB25 type = small , VG30 type = huge . They really do have a lot of volute area inside them but remember they were designed to not choke a three litre V6 .

Cubes do you intent to run the complete VG30 turbo or some kind of bitza thing .

Cheers A .

[Bass Junky]

VG30 rear housing, RB25 front.

[32vspecII]

Yeah, I agree with bass, for around the $2000 you get a turbo that puts you easily over the 250kw realistically and closer to 280. Is a bolt in situation, no modifications required for the fitting which is a big plus..And retains the stock look for any enquiring eyes. I know I was disappointed with my stock Hiflow struggling to get 240kw with the usual mods. I know for sure i was disappointed in my HKS cams, I thought they were a waste of money. But I think now with the VG30 Turbine housing the cams might be getting breathing space.  One last thought is that I feel i'm comming to the end of my quest for more power. SK's theory of 280kw max is good for me.  

Ian

what bolt on turbo can I get for 2k that makes 280rwkw ? and where can I get one ?

[Cubes]

Bass Junky,

Are you sure they don't have any? I was in there only a few days ago and they had quite a few.

Your not confusing Option1 Garage with D1 Garage?

Discopotato,

I plan on initially running the as is VG30DET turbo, I'm keen to see how well it goes.

I know the RB20DET turbo makes 175rwkw on 9psi from 4400-4950rpm. Lets see how the vg30 differs.

I figure it should make 210rwkw on the dyno that I run on (rb25's make 190-200rwkw with rb25det turbo's and approx 11psi).

Should be interestering too see.

To be honest the exhaust a/r doesn't look much bigger than the rb20det turbo i'm running.

When I was up at D1 Garage I noticed there are 2 different types of rb20det turbo's, mine and a smaller looking one.

It has what looks like a smaller exhaust housing and a different designed compressor inlet, mine steps up to the compressor wheel where as the other smaller one has a smaller inlet steps down then steps back up to the compressor wheel.

[Ionos]

Will the VG30 turbo bolt straight up as is? And does it have steel exhaust and intake wheels?

[Sydneykid]

I know for sure i was disappointed in my HKS cams, I thought they were a waste of money. Ian

Hi Ian, what cams did I tell you to buy? :innocent:

[GunMetalR33]

This hi-flow sounds like the perfect upgrade here, and correct me if I am wrong in saying this but cant you get a Garrett GT3071r that has a T3 flange and a Option for a nissan .63 ar internally gated zuast housing capable of making 280 rwkw easy for about 1900-2100 dollars????

If I had to make a choice between a engineered turbo and a re-engineered turbo I know what I would go for...

Yes I know that its a RTA risk & you still have to run water & oil lines so add $250 and a heat shield.

I guess the following would be about right.

Turbo = free

High Flow = $1950 (max)

exhaust housing or busted turbo = $150

I assume the exhaust housing machining could be done when th turbo is high flowed so no additional price.

Total, $2100

I think

[GunMetalR33]

GT30 turb:

http://www.horsepowerinabox.com/HPIAB2/prod18.htm

[32vspecII]

thanks gunmetal