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One of the bearings looks like some dirt or other material put a grove in it. The grove will reduce the load carrying capacity of the bearing by over 50 percent. Also if this spalling is on the rod side bearing you may have a detonation problem that is fatiguing the bearing. Do you see any other signs of detonation? damaged pistion ringlands etc. How do the back sides of the bearings look? Do they show signs of metal tranfer to the rod, are they galled and black?
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