Sounds like you had a classic lean seizure with lots of detonation. I seriously doubt your crank was effected, or your piston contacted the head - most likely the detonation just ate away at the piston rim (especially in front of the exhaust port I bet) and the ring may have even broke...but bits are sure to have bounced around and pitted the heck out of the head. Most of the time the damage to the head is not deep enough to need a new one, and it can be remachined. You at the very least need to clean up the head and do a top-end job. The crank should at least be fully inspected, if not replaced. You will not be far away from the price of a whole new engine.
As for the cause, I would be suspecting either the carbs needing to be rebuilt, or some obstruction or air in the fuel lines.
As for the cause, I would be suspecting either the carbs needing to be rebuilt, or some obstruction or air in the fuel lines.
Comment