Inliners International Forums General Discussion Hi Performance valve tapping sound on 292

The post from Richard, CA, made me think of problems I've had with other engines, with valve parts hitting the valve cover - rockers too big or pedestals not machined down far enough.

Have you tried running the engine with the valve cover OFF?
It's not THAT messy if you don't rev it and just for a few seconds, or you can cut the top out of an old valve cover and use that. Then you could see what is going on in there. If it stops making the noise, you've found the problem!