| what a set of bearings look like from a balanced engine that was subjected to a lot of abuse. 
Each of the cylinders were obviously subjected to detonation in a pretty even manner as the bearings all show pretty heavy signs of wear. These bearings are in order from 1 to 6, left to right. This shortblock had about 15K miles on it. It is obvious to see that the two center bearings (#3 and #4) took most of the beating. Perhaps these two journals were just a little more out-of-round than the other 4 which led to them wearing out quicker, or these two center cylinders were subjected to more detonation than the rest - or it could be both of those possibilities in varying degrees. Assuming that all of the journals were identical, all bearing clearances were the same, and this was solely due to detonation, one may speculate that the #3 and #4 injectors weren't flowing quite as much fuel as the rest of them, leading to higher cylinder temps, and greater probability of detonation. I'm not convinced that you will have just one single bearing fail miserably while the rest are just fine unless there was a cylinder-specific reson for failure. To state that it was just deonation may be correct, but why was that the only cylinder to detonate if that is the case? What made it different from the rest?
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