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Registered
Join Date: Jul 2001
Location: Portland Oregon
Posts: 7,007
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I don't see evidence of detonation on your bearings; I do see a lot of FOD caused by metallic debris and possible evidence of incorrectly sized big ends on the rods. I'd have to measure the latter to be sure.
Detonation manifests itself on piston crowns, ring lands, pin bores, upper rod bearing shells, as well as other places.
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