Well I started working on the Trex 700 motor rebuild last night. It was a mess inside, mostly at the top, between the piston and head. Most of the piston that broke was imbedded in the head. I took my dremel with a cutoff wheel and carefully cleaned the debris off. Inside the crank area was as bad as you would think, but there was enough damage in there as well.

The sleeve needed a little attention, as the ring left some remains on the side walls. A small piece of Scotch Brite pad...