So I took the boat out yesterday. Was coming through a no wake zone, got to the other side and hit somewhere areound 3000 to 4000 RPMs when I heard a loud *SNAP* and the enging ran rough as hell. I killed it and got towed in to dock. Today I took plugs out and one of the plugs was smashed. I pulled the head off and could not believe what I found. One of the valves sheard off right at the stem and fell in the cylinder. there is now a hole in the top of the piston big enough for me to put 3 fingers. the cylinder wall is partly scored and the head... well its tits up. i tore down the whole thing today and tomorrow morning im pulling the block out of the boat. If anyone has any sugesstions on anything i should do please let me know.