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HTA Green DBB testing at English Racing

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Old Sep 13, 2011, 10:18 PM
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Any updates?
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Old Sep 14, 2011, 02:51 PM
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Originally Posted by dtrackstar
Any updates?
None to report. The only mods that will make more power are bigger cams and a different intake manifold. That wont happen for a few reasons-

1- Car is a road race setup now so balance between response and peak power is more important. Luke races around 23-24psi on E85, 445-450whp nominal.

2- Luke wont be running Q16 at any event (534/514 was on Q) either.

3- Parts cost money even for shops. We put the car together for Luke with all the spares in the shop that we couldnt sell. S1s are smaller than most of our customers want and we have a bunch of stock intake manifolds.

This turbo is definitely capable of more, we just wont be the ones to push it to the limit. I believe Curt Brown made 570+ on it on a large spike though. He uses E85, ER SD tuning, S3s, BR2.3RPM (10:1), Skunk2 Intake, and I want to say a 39psi spike.

Aaron
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Old Sep 14, 2011, 04:46 PM
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I thought Curt's numbers were on the non BB version?
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Old Sep 14, 2011, 05:57 PM
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Originally Posted by dtrackstar
I thought Curt's numbers were on the non BB version?
they are.
Going to BB should not change top end power or boost threshold, only transient response and durability.
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Old Sep 14, 2011, 06:30 PM
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Originally Posted by dtrackstar
I thought Curt's numbers were on the non BB version?
Originally Posted by RSMike
they are.
Going to BB should not change top end power or boost threshold, only transient response and durability.
exactly
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Old Sep 15, 2011, 12:11 AM
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Thank you!
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Old Sep 15, 2011, 09:26 PM
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Originally Posted by RSMike
they are.
Going to BB should not change top end power or boost threshold, only transient response and durability.
Assuming that the BB user does not spin it another 20,000 RPM higher than the journal bearing version
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Old Nov 2, 2011, 07:30 AM
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Old Nov 2, 2011, 10:18 AM
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Luke put 202 track miles on it in one day and its still kicking
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Old Nov 2, 2011, 06:04 PM
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even considering response, isnt 23-24 psi pretty low? i ran 25psi on the stocker
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Old Nov 2, 2011, 06:35 PM
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Did you run the stocker at 25psi for 15mins straight in 4/5/6th gears?
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Old Nov 2, 2011, 09:12 PM
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Originally Posted by kyoo
even considering response, isnt 23-24 psi pretty low? i ran 25psi on the stocker
24psi is 448+whp which is more than enough for a track car on 255s. I know that your 25psi on the stocker wasnt close to that. We still have the traction issue of the 448whp AND the heatload to deal with for a full lapping session.


Originally Posted by Benja
Did you run the stocker at 25psi for 15mins straight in 4/5/6th gears?
20 min sessions

I know what you mean though

Aaron
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Old Nov 2, 2011, 09:59 PM
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Yep, no way you want it even close to max efficiency zone for road-racing.
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Old Nov 3, 2011, 05:17 AM
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Do you have to run FPs oil line with this new turbo? I know you need it for the red and black
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Old Nov 3, 2011, 08:38 AM
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We did on this one as well, Robert was very insistent on that.

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