[Jake Raby]

The material in the cylinder, is the cylinder... After the rod bolt stretched, worked its way loose and fell into the sump where it was picked up by the timing chain..

The remaining single rod bolt wasn't enough to tie the mass together, so it broke and shot the cap through the top of the block. When the rod became disconnected it acted much like an axe and chopped through the bottom of the cylinder.

.......and some people are REUSING the stock rod bolts!