TRXMaddness
10-26-2004, 11:55 AM
First off I replaced all the valve seals and piston rings within my 400EX. After breaking it in it ate a exhaust valve and destroyed the head and piston.
Well, after replacing the head and boring the motor to a 402. I fired her up and there is still a clapping sound coming from the top end. Sounds like the same sound before it ate the valve. Could my piston rod or crankshaft bearings be shot and causing the clapping sound. It sounds like the valves are tapping on the piston, but there is no evidence.
Well, after replacing the head and boring the motor to a 402. I fired her up and there is still a clapping sound coming from the top end. Sounds like the same sound before it ate the valve. Could my piston rod or crankshaft bearings be shot and causing the clapping sound. It sounds like the valves are tapping on the piston, but there is no evidence.