In a boosted car, if the car doesn't have the right knock fighting octane etc, you can blow a piston to pieces. Those pieces have to go down through the rotating assembly .. typically they lodge themselves between the block and say a connecting rod. Presto, engine locked up.
It is possible for the piston to pass, but not likely. So here's pictures of that near impossible thing happening.
Something missing?
Owwwie
Here's the piston, in the oil pan
funniest part was when I lifted the hood to buy the car, it sat all winter ~6 months. I said, "um where's the valve covers?" They were in the trunk...of course..lol
