258 – C’mon Does Valve Lapping Really Work?!

This exhaust valve in a turbo-normalized A36 Bonanza looks quite good. The appearance is mostly concentric and uniform. There’s just that one area at about the 10 to 11 o’clock position that looks slightly uneven. If the compression test had been good, I likely would not have lapped the valve. But since it was 44/80 […]