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Neil Harvey Neil Harvey is offline
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Join Date: May 2004
Posts: 259
Bearings should last a long time if there is nothing wrong. The shells are tin coated and a very hard surface. They are made to last. As long s you have an oil film holding the crank off the bearing, there should be no wear. Its only on start up that the crank may touch the bearing. Hopefully if the clearances are no big, oil is retained when the engine stops and holds the crank off the bearing on start up.

Wear patterns on the pin bushings is typically from the pin being pounded against the bushing when the piston is trying to jerk itself out through the top of the cylinder. All very typical. Signs of wear on the cap side of the bushing is from the pin being pushed against the bushing under compression. 0.02mm clearance is tight, ok but it has to be expected that the oil film is thinner and some pin to bushing contact will happen. 60K miles and this is the only war, you are in good shape.
Old 06-16-2018, 02:30 PM
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