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Old 09-03-2001, 07:47 PM
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Richard Hudgins Richard Hudgins is offline
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Join Date: Jun 1999
Location: Fallbrook, CA USA, CA
Cobra Make, Engine: Porsche 928 S4
Posts: 739
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Hi Jack,

Valve float at low rpm's (6000 is low) will be felt as a flattening out of the power.

Much like a soft rev limiter.

the best indication is the sound of the exhaust. It will start to go flat sounding and a little out of sequence. In other words, it will lose the crisp sound and drop into the flat bass area.

If you could see the top of your carb, you would also see "fuel standoff". This is the best indication of float, but you really need to be on a dyno to see the standing wave produced.

I would check your seat pressures as well as rates per your cam manufacturer specs.
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Richard Hudgins
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