[C320-list] Engine noise

[Jim DeLong]

Wondered if anyone else has experienced this engine noise?

While in the ocean a couple of days ago, trying to outrun a squall, a crew 
member cranked up the RPM's to 3000. More that I'm normally confortabe with.

After 15 minutes or so, the normally smooth engine (Yanmar 27 HP) began to 
sound like metal grinding. Pulled the RPM's bact to 2200 and all was well. 
Cranked it up again and after 15 minutes it started again. No other symptoms 
at all. Ran well but just sounded funky.  In port yeaterday we started the 
engine and ran it up to 3000. Could not get it to do it again.

Thought it may be from the transmission or a slipping shaft, but the prop 
seemed to turn just fine.

Anyone experience this one?

Thanks,
Jim DeLong #453