Hot housing A/R upgrade question
11-25-05, 08:07 PM
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Hot housing A/R upgrade question
I am currently running a T04E 57 trim .84 a/r (divided) p wheel. My question what power/back pressure upgrade would achieved by upgrading the hot housing to a 1.00a/r (divided).
11-26-05, 06:20 AM
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Originally Posted by RETed
Exhaust backpressure should go down.
Power band shifts higher in the RPM band.
-Ted
Power band shifts higher in the RPM band.
-Ted
Is this upgrade worth it? the motor has stock ports and I run a high flow cat? Or a better question, what hot side a/r is best balanced for a street/track car at 13psi with the aforementioned turbo.
Last edited by Jack; 11-26-05 at 06:22 AM.
11-26-05, 02:50 PM
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Originally Posted by Jack
Ted
Is this upgrade worth it? the motor has stock ports and I run a high flow cat? Or a better question, what hot side a/r is best balanced for a street/track car at 13psi with the aforementioned turbo.
Is this upgrade worth it? the motor has stock ports and I run a high flow cat? Or a better question, what hot side a/r is best balanced for a street/track car at 13psi with the aforementioned turbo.
11-26-05, 08:35 PM
#5
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Are you running a divided turbo exhaust manifold?
If so, the 1.00 should be fine.
How quick does the 0.84 spool now?
The T04E "57" is a bit small for a 13B, IMO, so it should still spool rather quick even stepping up one size on the turbine A/R.
-Ted
If so, the 1.00 should be fine.
How quick does the 0.84 spool now?
The T04E "57" is a bit small for a 13B, IMO, so it should still spool rather quick even stepping up one size on the turbine A/R.
-Ted
11-27-05, 08:24 AM
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Originally Posted by RETed
Are you running a divided turbo exhaust manifold?
If so, the 1.00 should be fine.
How quick does the 0.84 spool now?
The T04E "57" is a bit small for a 13B, IMO, so it should still spool rather quick even stepping up one size on the turbine A/R.
-Ted
If so, the 1.00 should be fine.
How quick does the 0.84 spool now?
The T04E "57" is a bit small for a 13B, IMO, so it should still spool rather quick even stepping up one size on the turbine A/R.
-Ted
11-28-05, 06:44 AM
#7
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If I remember correctly, the "57" top efficiency is about 300hp @ 15psi.
I would step up to at least the "60" trim, as that should get your power goals.
...unless we're talking BHP at the flywheel?
My numbers are at the rear wheels on a DynoJet.
-Ted
I would step up to at least the "60" trim, as that should get your power goals.
...unless we're talking BHP at the flywheel?
My numbers are at the rear wheels on a DynoJet.
-Ted
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11-28-05, 08:55 AM
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Originally Posted by RETed
If I remember correctly, the "57" top efficiency is about 300hp @ 15psi.
I would step up to at least the "60" trim, as that should get your power goals.
...unless we're talking BHP at the flywheel?
My numbers are at the rear wheels on a DynoJet.
-Ted
I would step up to at least the "60" trim, as that should get your power goals.
...unless we're talking BHP at the flywheel?
My numbers are at the rear wheels on a DynoJet.
-Ted
11-28-05, 11:22 AM
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Originally Posted by RETed
Yes, those are maximum flow numbers...
So they would be applicable if you're running...about 30psi?
T04E "57"
T04E "60"
-Ted
So they would be applicable if you're running...about 30psi?
T04E "57"
T04E "60"
-Ted
11-28-05, 03:59 PM
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Originally Posted by Jack
Are you implying, at lower boost levels, lets say a bar, the 60 trim flows much higher than the 57 trim?
11-28-05, 10:04 PM
#12
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Yes.
Look at where the middle of all the concentric rings fall...
On the "60", it right around 2.00 or about 15psi.
On the "57", it's slightly higher.
This is where the turbo is running at it's most efficient.
Now, go down vertical, and the "57" is pumping slightly under 30 lb/min, while the "60" is doing a solid 30 lb/min.
-Ted
Look at where the middle of all the concentric rings fall...
On the "60", it right around 2.00 or about 15psi.
On the "57", it's slightly higher.
This is where the turbo is running at it's most efficient.
Now, go down vertical, and the "57" is pumping slightly under 30 lb/min, while the "60" is doing a solid 30 lb/min.
-Ted
