New Supercharged 1990 GT Results
10-22-2004, 04:56 PM
#76
Three Wheelin'
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Yes Tim, it should. Maybe we should all quit while ahead before one of us has "An Unfortunate Schmelting Accident"...sorry but my wife bought me the Goldmember DVD for Sweetest day (she got roses and a card). I think I have already picked the name for the TT 32 valver...any guesses? Now if UPS would deliver the pistons the conveniently lost on the last shipment I would be able to get something done this weekend...The Audi needs work anyway so I'll do that instead.
What say ye, 16-18 psig on that sweet 4 valve combustion chamber? Sounds like 5.0 liters of forced induced fury to me!
What say ye, 16-18 psig on that sweet 4 valve combustion chamber? Sounds like 5.0 liters of forced induced fury to me!
10-22-2004, 04:57 PM
#77
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Originally Posted by Old & New
...""Squiggles" can be cause by a few things, such as timing, detonation, rear tire imbalance and even air flow issues.
With extreme jaggedness, you can perform a coast down/negative horsepower test to rule out any rear tire imbalance.
However, he's confirmed for us that all the items I suspected can lead to the squigglies.
10-25-2004, 11:16 PM
#78
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Old & New - yes - we did notice an out-of-balance condition that was quite obvious. The car really shook especially above 90 mph. We reported it to the owner. He hasd beautiful new aftermarket wheels and tires - but of course - had instructed the installers to only put the wheel weights on the inside so as not to ugly-up the alloys on the side we all see. You can rarely get a whell/tire combo in dynamic balance that way.
10-25-2004, 11:33 PM
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Originally Posted by Old & New
It sounds like we may have the answer, then...!
O&N? Any new news from the DJ folks? Carl?
10-27-2004, 06:58 PM
#82
Racer
I think the 4th gear pull will give more accurate profile of the power curve, since the increased sample per cycle will better define the curve.
The dip may simple be the exhaust harmonics. As the gas flow hits resonance there may be a little backpressure.
The dip may simple be the exhaust harmonics. As the gas flow hits resonance there may be a little backpressure.
10-27-2004, 10:15 PM
#83
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Carl, how did you determine that the knock sensors were not singing?
