Nitrous induced.







You can't really tell from the pics, but the ring lands on most of the pistons collapsed. Several bores got rough marks in them as well.

New motor that lasted 250 miles.







I learned to always have the line bore checked. Even if it had just been done on the last nitrous motor that only lasted about 3000 miles before the juice was put to it and problems arose. And plastiguage doesn't tend to find potential problems like this before they happen.