a beautiful boat should sail forever.
engine tear down with Jack 019
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Comment by bob mitchell on January 29, 2011 at 10:09pm
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This is the main bearing beside no. 4 cylinder, Basically, each piston has a set or bearings (rod bearings) and the crankshaft has bearings (main bearings) . Bearings are replaceable, and are softer than the main engine components the are designed to protect by taking most of the wear.
Uneven main bearing wear can indicate the line bore of the block is out, but the rest of the main bearings were ok so this is probably damage associated with the "single rod failure" of cylinder 4. (hopefully)
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