Originally Posted by WARREN BARBER
It's odd that nobody notices all the rings are pretty much lined up. The scuffing on the pistons skirts looks to be caused by to tight a fit. Not due to original clearances but do to massive overheating which in turn caused the detenation concerns. who ever put the engine together didn't know what they were doing and probably didn't purge the cooling system. This is the only way this mush damage could be done to an engine in this short amount of time. Unless NOX or just all out racing and no break in period.
I am sure the engine being over timed will cause the pistons to run hot and expand and cause this damage!!!