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Detonation and Run-On
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Posted: 11/07/09
06:36 PM
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Engine is 327 with 30-30 cam (variant). True 10.85 - 11.15 measured/calculated SCR. Pump high test 93 PON. Vac advance disconnected, initial 10 degrees, centrifugal add 21 degrees, all in at 2500, total 31 degrees.
Detonation at cruise, tip-in. Occurs between 3000 and 5000 RPM.
Idle speed 900 RPM.
Idle vacuum 7 in-hg @ 900 RPM.
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Posted: 11/07/09
06:51 PM
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to stop the run on, shut it off in drive.. then put it in park...
or slow the idle speed down......
how loose are the pistons in the bores???
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Posted: 11/08/09
05:35 AM
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Have you tried a higher octane fuel yet?
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