Mine blew at 135,000 was running perfectly one second, turned it off, and it would start back up. Dropped the seat from the intake in #4, since it didn't restart it only ate up #4. I have only seen it through a scope, but it wasn't pretty. So I am receiving a junkyard engine tomorrow, which I will immediately pull the head off and replace it with a reman head with the new and improved seats.....hopefully all will be OK.
Frustrated Shade Tree Mechanic