393.6 RWHP @ 13.0 PSI
05-19-2011 | 10:34 PM
#16
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From: comeback trail
If you gained 3 psi and only that small amount of HP, then you may just actually have a pressure loss.
Where do you/they suspect the leak to be?
05-19-2011 | 10:39 PM
#17
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Burning Brakes
Joined: Jun 2006
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From: Lethbridge, Alberta, Canada
There was an O ring missing on the compressor side of the turbo. Lee told me it had been freshly rebuilt and it must have been omitted in error. The guys at Alpine have remedied it and we hope to run it at Race City Monday night, weather permitting.
05-19-2011 | 11:20 PM
#18
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From: comeback trail
Very curious - can/will you post results here?
05-20-2011 | 06:11 AM
#21
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Burning Brakes
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From: Lethbridge, Alberta, Canada
03-28-2014 | 11:00 AM
#24
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From: New Jersey
turbo??
That dyno is screwy. The calibration is way off somewhere.
393RWHP which the dyno calculated to 423HP at the crank. That would make the driveline loss only 9%. That' way off.
Either the boost was reading wrong, or the dyno is off. But it's just not realistic for that 8V 2.5L engine combo is making just shy of 400RWHP at 13psi.
I'm very familiar with the Millage stuff as well as all the other parts on that setup. If the car runs good, great. But I'd run it on a different dyno with a boost plot to see what it's really doing.
TonyG
393RWHP which the dyno calculated to 423HP at the crank. That would make the driveline loss only 9%. That' way off.
Either the boost was reading wrong, or the dyno is off. But it's just not realistic for that 8V 2.5L engine combo is making just shy of 400RWHP at 13psi.
I'm very familiar with the Millage stuff as well as all the other parts on that setup. If the car runs good, great. But I'd run it on a different dyno with a boost plot to see what it's really doing.
TonyG
Here is the original dyno from Milledge's 2.6 using that turbo (Hi Lanny):
03-28-2014 | 12:05 PM
#29
Rennlist Junkie Forever
Joined: Dec 2001
Posts: 5,978
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From: Los Angeles
Exactly.
Look at the boost graph. It's a lot more than 13psi.
393RWHP at 15% drive line loss would be approx 462Hp at the crank (CPower on the graph).
Lots of things can affect driveline losses so the 15% number is an approximation.
TonyG
Look at the boost graph. It's a lot more than 13psi.
393RWHP at 15% drive line loss would be approx 462Hp at the crank (CPower on the graph).
Lots of things can affect driveline losses so the 15% number is an approximation.
TonyG
03-28-2014 | 12:18 PM
#30
Drifting
Joined: Nov 2001
Posts: 2,012
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From: Round Hill, Virginia
That is on an engine dyno as well.
BUT
Can a 2.5 8v motor put 350ft/lbs on the ground @ 13psi? I wouldn't be so quick to say it cannot.
Here is a 2.5 8v motor with stock cam and head, IC running on a Motec M4 w/CDI @ 1.3 bar pushing the Greddy bypass open on Autothority's SuperFlow 10 years ago or so.
BUT
Can a 2.5 8v motor put 350ft/lbs on the ground @ 13psi? I wouldn't be so quick to say it cannot.
Here is a 2.5 8v motor with stock cam and head, IC running on a Motec M4 w/CDI @ 1.3 bar pushing the Greddy bypass open on Autothority's SuperFlow 10 years ago or so.
