Results From My HTA35R Turbo Kit From Buschur Racing!!
Oct 28, 2007, 09:32 AM
#92
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I've read and re-read this thread and still can't find what the turbine housing a/r was in the "before" mode. We know it was a .63 a/r in the "after" test per Dave's post listed below. But what was it in the "before" test??? Was it .82 or .63? It's been asked a couple times, but I can't see where it's been anwered.
Oct 28, 2007, 04:24 PM
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bump . . .
clearify please;
Can the hta wheel be run on the 35r that uses the cast manifold?
can you get either a .63 or .82 on the cast manifol and will the HTA bolt up to both?
Using the tubular manifold can you get either a .63 or .82?
was this comparison both using the .82 or .63 hot side ? or do I have **** backwards... I'm so confused right now.
If I went with buschur's cast manifold 35r, am I getting a .82 hotside or compressor side ? and can I later just send it back for the HTA wheel upgrade??
David I think I'll need your help directly here as well as it pertains to a lot of the other questions asked by others that we all would like the answeres too. Thank you!
clearify please;
Can the hta wheel be run on the 35r that uses the cast manifold?
can you get either a .63 or .82 on the cast manifol and will the HTA bolt up to both?
Using the tubular manifold can you get either a .63 or .82?
was this comparison both using the .82 or .63 hot side ? or do I have **** backwards... I'm so confused right now.
If I went with buschur's cast manifold 35r, am I getting a .82 hotside or compressor side ? and can I later just send it back for the HTA wheel upgrade??
David I think I'll need your help directly here as well as it pertains to a lot of the other questions asked by others that we all would like the answeres too. Thank you!
Oct 28, 2007, 05:42 PM
#96
quote:
Can the hta wheel be run on the 35r that uses the cast manifold?
YES.
can you get either a .63 or .82 on the cast manifol and will the HTA bolt up to both?
NO, FP TURBINE HOUSING ON THE CAST MANIFOLD ONLY.
Using the tubular manifold can you get either a .63 or .82?
NO, 5 BOLT .63 HOUSING IS WHAT WE USE ON THE HEADER KITS.
was this comparison both using the .82 or .63 hot side ? or do I have **** backwards... I'm so confused right now.
NO, FIRST TURBO WAS WITH FP CAST HOUSING, SECOND KIT NOW IS A .63 HOUSING.
If I went with buschur's cast manifold 35r, am I getting a .82 hotside or compressor side ? and can I later just send it back for the HTA wheel upgrade??
IF YOU GO WITH THE CAST MANIFOLD IT IS THE FP HOUSING ONLY. YES, WE CAN UPGRADE THE 35R LATER TO THE HTA.
David I think I'll need your help directly here as well as it pertains to a lot of the other questions asked by others that we all would like the answeres too. Thank you![/QUOTE]
NO PROBLEM. My answers will in bolt just to stand out.
Can the hta wheel be run on the 35r that uses the cast manifold?
YES.
can you get either a .63 or .82 on the cast manifol and will the HTA bolt up to both?
NO, FP TURBINE HOUSING ON THE CAST MANIFOLD ONLY.
Using the tubular manifold can you get either a .63 or .82?
NO, 5 BOLT .63 HOUSING IS WHAT WE USE ON THE HEADER KITS.
was this comparison both using the .82 or .63 hot side ? or do I have **** backwards... I'm so confused right now.
NO, FIRST TURBO WAS WITH FP CAST HOUSING, SECOND KIT NOW IS A .63 HOUSING.
If I went with buschur's cast manifold 35r, am I getting a .82 hotside or compressor side ? and can I later just send it back for the HTA wheel upgrade??
IF YOU GO WITH THE CAST MANIFOLD IT IS THE FP HOUSING ONLY. YES, WE CAN UPGRADE THE 35R LATER TO THE HTA.
David I think I'll need your help directly here as well as it pertains to a lot of the other questions asked by others that we all would like the answeres too. Thank you![/QUOTE]
NO PROBLEM. My answers will in bolt just to stand out.
Oct 28, 2007, 07:11 PM
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still not clear.
What was the turbine housing a/r before and after the posted dyno results?
It's a simple question with a simple answer. Please answer! I have my Gt35R turbo boxed up and labeled for shipment to FP tomorrow for the upgrade.
What was the turbine housing a/r before and after the posted dyno results?
It's a simple question with a simple answer. Please answer! I have my Gt35R turbo boxed up and labeled for shipment to FP tomorrow for the upgrade.
Last edited by dubbleugly01; Oct 28, 2007 at 07:13 PM.
Oct 28, 2007, 07:31 PM
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-Paul
Oct 28, 2007, 08:33 PM
#101
The FP housing doesnt have an a/r. I think there is an actual process to determine what the a/r of a houisng is. FP never took those steps to find out. It has been estimated at .70 but it is just a rough estimate. And that estimate was for the gt30 wheel which the housing was made for. When the bigger 35r wheel was used in the same housing the a/r would no longer be the same. If the a/r was .70 with the 30 wheel the a/r would be smaller using the 35r wheel. The a/r is a ratio of the area over the wheel to the radius of the wheel. If you make the radius bigger the a/r gets smaller.
Last edited by 94AWDcoupe; Oct 28, 2007 at 08:37 PM.
Oct 29, 2007, 03:25 AM
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94AWDcoupe, thanks for the insight into the FP turbine housing.
That being the case, how do you tell if the gain in spool and midrange (in this thread) is due to the HTA compressor wheel/housing or the change in the turbine housing?
Granted, you can't argue the before and after dyno numbers because they are what they are, Invoice Evo picked up big gains from his old setup to his new. But the increase in spool rate could be attributed to the turbine housing change as much as the compressor side, or even the manifold change.
I've read numerous threads about this turbo, several times over, and the only back to back, no other changes, comparison I can find is the one Dave did months ago and that dyno sheet is on FP's website. And I think this was done with a .82 exhaust housing, which few of us are going to run on the street if they're worried about spool. Just wondering if the results wouldn't be as dramatic with a more reasonable .63 exhaust housing.
Bump for more impressions from those running the HTA GT35R!
That being the case, how do you tell if the gain in spool and midrange (in this thread) is due to the HTA compressor wheel/housing or the change in the turbine housing?
Granted, you can't argue the before and after dyno numbers because they are what they are, Invoice Evo picked up big gains from his old setup to his new. But the increase in spool rate could be attributed to the turbine housing change as much as the compressor side, or even the manifold change.
I've read numerous threads about this turbo, several times over, and the only back to back, no other changes, comparison I can find is the one Dave did months ago and that dyno sheet is on FP's website. And I think this was done with a .82 exhaust housing, which few of us are going to run on the street if they're worried about spool. Just wondering if the results wouldn't be as dramatic with a more reasonable .63 exhaust housing.
Bump for more impressions from those running the HTA GT35R!
Oct 29, 2007, 06:30 AM
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The FP housing doesnt have an a/r. I think there is an actual process to determine what the a/r of a houisng is. FP never took those steps to find out. It has been estimated at .70 but it is just a rough estimate. And that estimate was for the gt30 wheel which the housing was made for. When the bigger 35r wheel was used in the same housing the a/r would no longer be the same. If the a/r was .70 with the 30 wheel the a/r would be smaller using the 35r wheel. The a/r is a ratio of the area over the wheel to the radius of the wheel. If you make the radius bigger the a/r gets smaller.
this is an incorrect statement. the A/R of a housing has nothing to do with the wheel inside. it is a ratio of the area over the radius. the area being the area of the housing inlet, and the radius being the radius from the axis of the wheel, to the center of the scroll where the area is measured.
having a different A/R means the scroll shape will be different. either it will have a larger inlet, and/or it will simply look like a bigger "snail". wheel size and shape is completely independent and has nothing to do with the A/R.
you can reffer to garretts webpage for further info if needed:
http://www.turbobygarrett.com/turbob...o_tech102.html