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Old 03-13-2007, 08:43 PM
TLyttle TLyttle is offline
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Problem

I learned decades ago what the answer to this is, now I forget.

What busts up the rings? I used to think it was poor timing, but this thing was timed correctly. Lousy fuel? Overheat? Or just plain old age?

I need hints...
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Old 03-14-2007, 08:32 AM
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TigerDan TigerDan is offline
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Probably the number one breaker of rings is detonation (pinging). Excessive/frequent overheating can weaken the rings, especially old high-mileage rings which can lead to breakage. Lousy fuel? Well yes...if it causes detonation. Poor timing can cause detonation, but you can still get it with the timing spot on in many cases, depending on load.
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Last edited by TigerDan; 03-14-2007 at 08:38 PM.
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Old 03-14-2007, 08:06 PM
TLyttle TLyttle is offline
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Thanks Dan, confirms my scenario. This is a high-mileage engine, and ran like junk, which led to the teardown. Ah, well, limber up the wallet, here we go again...
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