Garret's new GTX-R billet turbos
Thread Starter
Joined: May 2005
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From: North Bay, Ontario
Garret's new GTX-R billet turbos
I've found a bit of info on this new Garrett lineup, if anyone else has anything, post it up.
80% efficiency!
And some poor formatting of comparisons:
http://img694.imageshack.us/i/gtx4508r.jpg/
http://img696.imageshack.us/img696/1843/gtx4294r.jpg
All in all very promising stuff!
80% efficiency!
And some poor formatting of comparisons:
http://img694.imageshack.us/i/gtx4508r.jpg/
http://img696.imageshack.us/img696/1843/gtx4294r.jpg
All in all very promising stuff!
Thread Starter
Joined: May 2005
Posts: 2,745
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From: North Bay, Ontario
Not sure. ATPTurbo has them advertised on their front page, which is where I caught it, but last week at SEMA. I'd say they won't be too long now.
Oh, and they apparently are releasing quite a few different models in re-designed Billet trim. Only thing that gets me wondering, is the new Garrett GTX 4294R, using a 94mm, 70mm inducer turbo is still putting out just shy of 100 lbs/min, and the PTE T3 6765 (84mm, 67mm inducer) turbo put down 920 AWHP on an evo, so I'd say it's putting out pretty near the same flow, but in a smaller package. I wish Precision would put out some damn compressor maps on their new ****, then we'd know for sure.
Oh, and they apparently are releasing quite a few different models in re-designed Billet trim. Only thing that gets me wondering, is the new Garrett GTX 4294R, using a 94mm, 70mm inducer turbo is still putting out just shy of 100 lbs/min, and the PTE T3 6765 (84mm, 67mm inducer) turbo put down 920 AWHP on an evo, so I'd say it's putting out pretty near the same flow, but in a smaller package. I wish Precision would put out some damn compressor maps on their new ****, then we'd know for sure.
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I was waiting to see how long before one of you guys posted this info 
The turbo's have a release date of december according to Garrett, but I will believe it when I see it. I know how they are and usually that means february. Then again who knows, they may have a few available by december as they are suggesting.
~S~
The turbo's have a release date of december according to Garrett, but I will believe it when I see it. I know how they are and usually that means february. Then again who knows, they may have a few available by december as they are suggesting. ~S~
Thread Starter
Joined: May 2005
Posts: 2,745
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From: North Bay, Ontario
How do you think the Precision line will stack up against them in terms of gain over cast Sean? I mean, on the 67mm billet wheel, AWDMotorsports made 920 awhp, that's gotta be in the 90-95 lbs/min range, no?
I heard that Garrett will be releasing the 42R and 45R first, then others will come out shortly after. I sure do hope so! These are very promising, and will be good for people who want the reliability of Garrett but the performance of PTE billets.
I really wonder how the 11 full height blades will compare to the staggered style like PTE and FP have.
I think they will stack up just fine. They certainly have access to a larger budget if need be. I have a feeling you'll be seeing better gains on the smaller wheels than the larger ones, just a gut feeling. I think the one to be impressed with most currently is the 4294, the map is both taller and wider in some spots than the cast 4202.
Last edited by Zero R; Nov 17, 2009 at 01:47 PM.
Thread Starter
Joined: May 2005
Posts: 2,745
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From: North Bay, Ontario
I think they will stack up just fine. They certainly have access to a larger budget if need be. I have a feeling you'll be seeing better gains on the smaller wheels than the larger ones, just a gut feeling. I think the one to be impressed with most currently is the 4294 the map is both taller and wider in some spots than the cast 4202.
I agree about the smaller wheels, it makes sense. On larger wheels, you have less percentage of blade length to be gained by reducing the size of the shank compared to smaller turbos. There's an easy 15% more blade length to be gained on a 67mm cast wheel going to billet, but on a 108mm wheel, I'm sure it's proportionately less.
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Joined: Dec 2007
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From: MD/VA/DC metro area...
~ Kayvon
I agree, that 4294 is pretty impressive. Even better would be in the 40R size, and you have yet another great street/strip turbo, with big power potential.
I agree about the smaller wheels, it makes sense. On larger wheels, you have less percentage of blade length to be gained by reducing the size of the shank compared to smaller turbos. There's an easy 15% more blade length to be gained on a 67mm cast wheel going to billet, but on a 108mm wheel, I'm sure it's proportionately less.
I agree about the smaller wheels, it makes sense. On larger wheels, you have less percentage of blade length to be gained by reducing the size of the shank compared to smaller turbos. There's an easy 15% more blade length to be gained on a 67mm cast wheel going to billet, but on a 108mm wheel, I'm sure it's proportionately less.
Billet is more beneficial to smaller and mid framed turbo's for a couple reasons.
One the aforementioned shaft area to over all size ratio.
Another being the blade thickness to over all size too.
The last being the larger you go, the higher the tip speed/mach numbers on the outer fins per given shaft speed. It's a law of physics that cannot be gotten around. Some of it can be fixed with back sweep, but it has diminishing returns.
~Mike...........
