 A main cap bolt came off, main cap came off, put it sideways, wrecked damage in the bottom half of the engine, the piston seized up, the connecting rod smacked the piston, turned it sideways, scored the wall, so I got another engine, I tore it down to the block, had it checked, it was fine, and then I built that one up. There was nothing wrong with that engine when I originally started rebuilding it. It was a spare motor I had.