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ST80 vs 76GTS some tad bit of info....more will be coming

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Old 01-21-2008, 01:55 PM
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up from the dead! any more info on these or any comparisons to the st80
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Old 01-21-2008, 02:04 PM
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That comparison is about as good as you can get. The only advancement to this would be the ST80R which has the race cover and would make more power, then the next level would be the SX80 and SX80R.
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Old 01-21-2008, 02:22 PM
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Sounds like very much backpressure, what type of turbine A/R on the ST80?
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Old 01-21-2008, 02:23 PM
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Originally Posted by camaroandreas
Sounds like very much backpressure, what type of turbine A/R on the ST80?
We can build them from .80A/R to 1.52A/R.
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Old 01-21-2008, 02:26 PM
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But what was it on this test?
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Old 01-21-2008, 02:40 PM
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Originally Posted by camaroandreas
But what was it on this test?
read the 4th line in the post...
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Old 01-21-2008, 02:49 PM
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Post # 20 answered it....

https://ls1tech.com/forums/showpost....7&postcount=20
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Old 01-21-2008, 02:50 PM
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Originally Posted by MECHAM
read the 4th line in the post...
Sorry
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Old 01-21-2008, 04:07 PM
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So what is the exhaust exit difference? I have a 76GTS, what would I need to do to my downpipe to get the 80 to bolt up?
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Old 01-21-2008, 04:52 PM
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At what RPM was 20psi reached? what kind of dyno was this on? must./dynojet ... ect
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Old 01-23-2008, 03:52 PM
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What sixe is the turbin in a ST80?
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Old 01-23-2008, 04:25 PM
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Originally Posted by Frost
So what is the exhaust exit difference? I have a 76GTS, what would I need to do to my downpipe to get the 80 to bolt up?

It uses a 4" downpipe vs 3" from the 76GTS.
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Old 01-23-2008, 04:26 PM
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Originally Posted by BoostnTBSS
At what RPM was 20psi reached? what kind of dyno was this on? must./dynojet ... ect

This was on a dynojet I believe.....they both reached boost in the mid-low 3K range.
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Old 01-23-2008, 04:26 PM
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Originally Posted by camaroandreas
What sixe is the turbin in a ST80?
We use an 84mm turbine vs GTS is 82mm.
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Old 01-23-2008, 04:33 PM
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Ok, i was worried about the backpressure, but it will be alot less with my 96mm and 1.32 A/R.

Thanks for sharing the info.
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Old 01-24-2008, 08:24 AM
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The 76GTS was on what backside? same 1.10 ?
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Old 01-24-2008, 08:37 AM
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Originally Posted by 70Stang
The 76GTS was on what backside? same 1.10 ?
I think the biggest you can get is .96
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Old 01-24-2008, 10:43 AM
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Correct the 76GTS was on the biggest possible which is .96A/R.
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Old 01-24-2008, 11:54 AM
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Ok..just checking.

Still, very nice power from the BW unit - spool was similar even with the bigger backside, cool.
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Old 01-24-2008, 11:57 AM
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Originally Posted by 70Stang
Ok..just checking.

Still, very nice power from the BW unit - spool was similar even with the bigger backside, cool.
The BW though uses a divided housing so A/R's on the divided aren't accurate. A/R is based on total area over the radius to the center. Problem is they don't take into account the effect of having the divide into the area. So typicall a 1.10A/R divided is around the same as a ~.99A/R undivded housing.
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