Photo © 2003 Chuck Streit

Damage due to Missed Shift

All exhaust valves were bent, especially the one 2nd from left and the pistons "notched" by the force of the valve contact. The race engine had enough margin to prevent further damage. Street engines have less margin for error. The owner estimates a repair cost of approximately $4000. The owner was fortunate as engine damage was actually less than imagined. Over-reving often results in the piston shattering as the overextended valve contacts it. Without the upper connecting rod stabilized by the piston, the rod is free to destroy the bottom end of the engine.