Quote:
Originally Posted by TrackRat
With all those cylinders and pistons scuffed and the broken piston it looks like detonation to me. Poor balance would produce a serious vibration but not the scuffing or damaged piston. The sudden increase in oil consumption resulted from the cylinder pressure (boost) going into the oil sump once the piston broke and the top ring could not seal properly. The misfire could have been from the broken ring land. Detonation will also damage the bearings.
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+1
However, I wish you the best with the new motor.