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help diagnose this engine failure

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Old Jun 21, 2006 | 01:19 AM
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Default help diagnose this engine failure

i posted this thread: http://forums.corvetteforum.com/show....php?t=1420848 over in c3 regarding the failure of my engine. i believe the failure is simply a result of an excessively lean mixture, causing detonation. now here's the interesting thing. after removing both heads, this is what i've found. signs of significant detonation in cylinders 2,3,5 and 8 (obviously, being the worst) and little if any signs of detonation in cylinders 1,4,6 and 7. #1 and #7 show notable damage while #4 and #6 have virtually no signs. anyone want to venture a guess as to the reason why these cylinders show signs of such bad detonation?
i'll post my theory in a bit.
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Old Jun 21, 2006 | 08:41 AM
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From: eville in
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iv'e seen piston crown's tan from being lean,, has pit's (spalling) and not fail
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