T4 Sized GT35R!
05-10-04, 02:07 AM
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T4 Sized GT35R!
Well, I assumed somebody else would post about this, but it's been the whole weekend and nothing, so here I go.
Apparently there is a tangential T4 turbine side available for the GT35R. ATPTurbo.com has it listed and so I assume that A-Spec can get it, as well.
The press release on ATP's site is http://www.atpturbo.com/root/releases/release043004.htm .
I guess the only downside is that it's an .82 a/r; maybe the wheel is efficient enough to counteract this? It's also only available undivided. Either way, I think it's still a far more desireable turbo now.
Victor
Apparently there is a tangential T4 turbine side available for the GT35R. ATPTurbo.com has it listed and so I assume that A-Spec can get it, as well.
The press release on ATP's site is http://www.atpturbo.com/root/releases/release043004.htm .
I guess the only downside is that it's an .82 a/r; maybe the wheel is efficient enough to counteract this? It's also only available undivided. Either way, I think it's still a far more desireable turbo now.
Victor
Last edited by $150FC; 05-10-04 at 02:11 AM.
05-10-04, 02:11 AM
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If it was better off being a T4 then why didn't Garrett build it that way in the first place? I think Garrett has their reasons for using a T3 inlet on it. Any got opinions on that?
05-10-04, 01:24 PM
#6
Rotary Enthusiast
seems to me like no one really KNOWS mcuh for sure
about turbo's and turbo sizing. I dont either!
I talked to ATP turbo. the housing is the same aerodynaically inside as a garrett housing.
the reason for using a t4 housing is that most of us have a turbo manifold with a t4 flange! when you step that down to a T3 it intruduces alot of turbulance to the exhaust flow.
other than that I dont know squat. I asked the original question
is a .84 a/r t4 able to flow more than a 1.06 a/r T3.
I cant find anyone to answer it! ive even checked with places that SHOULD know.
Im thinking maybe ill just build a new turbo manifold and be happy with the gt35r i have.
it woudl be nice to hear from someone who has a gt35r, what a/r they have and what sort of results they have.
about turbo's and turbo sizing. I dont either!
I talked to ATP turbo. the housing is the same aerodynaically inside as a garrett housing.
the reason for using a t4 housing is that most of us have a turbo manifold with a t4 flange! when you step that down to a T3 it intruduces alot of turbulance to the exhaust flow.
other than that I dont know squat. I asked the original question
is a .84 a/r t4 able to flow more than a 1.06 a/r T3.
I cant find anyone to answer it! ive even checked with places that SHOULD know.
Im thinking maybe ill just build a new turbo manifold and be happy with the gt35r i have.
it woudl be nice to hear from someone who has a gt35r, what a/r they have and what sort of results they have.
05-10-04, 02:06 PM
#7
It is a garrett product, they are considering other sizes, I specifically asked for larger more ported rotary friendly sizes, the TO4R cutback is a .84 also so other than slightly smaller wheel size and being non-divided it should give you a idea of where you would be.
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05-10-04, 04:40 PM
#8
Rotary Enthusiast
ok i just got off the phone with george at atp turbo
this t4 housing is actually EXACTLY the same as the T3 housing flow wise. Internaly it is identical to the T3 housing of the same size a/r that garret uses.
they have been working directly with garrett on this project because so many of us have T4 flanged stuff and people shy away from the small t3 flange.
garrett will most likely be using this housing as their own in the very near future.
the only differance between the t3 and t4 housings is the inital inlet for the flange.
It is a GT exhaust housing, not a standard T4
housing machined and jerry rigged to fit the turbo like many other companies do. It was actually Specifically designed for the gt35r buy atp turbo and garrett.
It is actually .82 A/R I was mistaken originally
It flows exactly the same as the .82 A/R T3 housing.
Hopefully this answers everyones questions. If anyone has more I will be glad to call them or talk to them when i am there next monday.
I highly reccomend these guys. they have treated me great since day 1 dealing with them.
this t4 housing is actually EXACTLY the same as the T3 housing flow wise. Internaly it is identical to the T3 housing of the same size a/r that garret uses.
they have been working directly with garrett on this project because so many of us have T4 flanged stuff and people shy away from the small t3 flange.
garrett will most likely be using this housing as their own in the very near future.
the only differance between the t3 and t4 housings is the inital inlet for the flange.
It is a GT exhaust housing, not a standard T4
housing machined and jerry rigged to fit the turbo like many other companies do. It was actually Specifically designed for the gt35r buy atp turbo and garrett.
It is actually .82 A/R I was mistaken originally
It flows exactly the same as the .82 A/R T3 housing.
Hopefully this answers everyones questions. If anyone has more I will be glad to call them or talk to them when i am there next monday.
I highly reccomend these guys. they have treated me great since day 1 dealing with them.
Last edited by mikey D; 05-10-04 at 04:59 PM.
05-10-04, 06:39 PM
#9
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Originally posted by mikey D
this t4 housing is actually EXACTLY the same as the T3 housing flow wise. Internaly it is identical to the T3 housing of the same size a/r that garret uses.
the only differance between the t3 and t4 housings is the inital inlet for the flange.
It is actually .82 A/R I was mistaken originally
It flows exactly the same as the .82 A/R T3 housing.
this t4 housing is actually EXACTLY the same as the T3 housing flow wise. Internaly it is identical to the T3 housing of the same size a/r that garret uses.
the only differance between the t3 and t4 housings is the inital inlet for the flange.
It is actually .82 A/R I was mistaken originally
It flows exactly the same as the .82 A/R T3 housing.
The TO4 turbine flange passage is significantly larger than the T3 turbine flange passage.
Unless they did something weird like neck down the housing, but somehow I doubt this is the case?
If the TO4 is a true full TO4 turbine, then to have identical A/R numbers versus the T3 turbine, the radii has to be longer.
Whatever the case, even if the A/R's are identical, I have a hard time believing they both would flow the same...
-Ted
05-11-04, 02:05 PM
#11
Rotary Enthusiast
its not that confusing.
it is a .82 a/r gt35r T3 housing recast with a T4 flange and inlet
in essance it is a gt35r with a t4 flange attatched instead of a t3 flange.
if someone more technically turbo smart would like to call atp turbo and ask for george to get the explination again maybe you can post here and clarify it better than me.
if you would like i will take very very detailed pictures and post them so you can look.
it is a .82 a/r gt35r T3 housing recast with a T4 flange and inlet
in essance it is a gt35r with a t4 flange attatched instead of a t3 flange.
if someone more technically turbo smart would like to call atp turbo and ask for george to get the explination again maybe you can post here and clarify it better than me.
if you would like i will take very very detailed pictures and post them so you can look.
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