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Old 03-19-2010, 09:16 PM
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Looks like a bearing w/a lot of eccentricity to it, or improperly sized rod big ends, possibly a lot of idle speed/low speed use, w/less than optimum oil pressure or excessive cranking w/out start up.

Were both halves the same? If it was more the bottom, you might have had some detonation- especially if the bearings were loose in the cap half when you removed them.
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