Is the water from pulling the head without draining water first?On your previous question about springs, they should be even only if the rockers were all loose so no valves were open. I guess that broken piston probably bent at least one valve?
Gonna say it again...Not seeing a contact with piston plug..Seeing some severe detonation, nothing lean, a little carbon buildup, are you sure you didn't suck an intake gasket....C'mon, tear that fugger apart.....