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Old 04-05-2009, 06:45 AM
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AreCee
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Pitting is like pinging in a 1:1 engine. It's mostly from pre-detonation of the fuel/air mix. This could happen when the engine is overheated, using a hot plug (similar to advancing the timing), running too lean or not shimmed properly.

Another effect of pre-detonation is excessive wear on the conrod and shaft journal bushings.
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