258 – C’mon Does Valve Lapping Really Work?!
From Airplane Owner Maintenance - By Dean Showalter by Dean Showalter
April 3, 2026 · 36 min
About this episode
The episode discusses the effectiveness of valve lapping in aircraft engines, particularly focusing on a turbo-normalized A36 Bonanza's exhaust valve.
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 […]
Topics covered
- valve lapping
- engine maintenance
- aviation
- turbo-normalized A36 Bonanza
- compression testing
Keywords
- exhaust valve
- turbo-normalized
- A36 Bonanza
- compression test
- valve appearance
Mentioned in this episode
Products: A36 Bonanza
More episodes of Airplane Owner Maintenance - By Dean Showalter
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