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Excessive valve noise?


KZ72

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Hey guys, I’m wondering how much valve/engine noise is acceptable for a 49 flathead. When I rebuilt the engine, I set the cold valve clearance to 0.014”. The manual says to adjust the valves hot with the engine running. Now that the truck is reassembled that sounds pretty difficult. Just wondering if it’s worthwhile and will make the engine run quieter. Have a listen and tell me your thoughts. Thanks!

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The manual lists hot clearance as intake 0.010” and exhaust 0.014” so doing both cold at 0.014” is going to make the exhaust valves a bit tight and the intakes too loose. If you’re doing them cold try adding 0.001” or 0.002” and see how that works.

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Was the engine just rebuilt?

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