Something had to be out of round, though there would be some indication of that through bad harmonics I would think. Is it possible the bearings had moved or slipped? It could have been further into the engine allowing the crank or cam to be distorted?
Just a thought Mark. Fred Johnson Reno, NV - The remaining 180° of teeth exhibited little to no wear. There is no doubt that this wear was happening from the initial startup from the rebuild and took 4.5 hours to reach a point of failure. Mark Jones (N886MJ)
