[C38] Exhaust system check valve

[Phil Gay]

Dear List,

 

I finally finished my exhaust system upgrade on my Yanmar 3GM30 from 1 5/8"
to 2."  I replaced the check valve downstream from the water lift muffler.
The flapper in the old valve was lying at the bottom of the valve unattached
to anything.  I like the more relaxed sound of my exhaust now.

 

However, the new 2" check valve clanks when the engine is running.  I
suspect that the bronze flapper is banging against the upper surface of the
check valve rather than the surface that it closes against.  I suppose that
I could put a drop of sealant on the downside surface of the flapper to
deaden the noise.  Has anyone else encounter this annoying clanking?  How
did you solve it?

 

Phil Gay

C38 049 Que Linda

Everett, WA

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://catalina38.org/pipermail/listserve_catalina38.org/attachments/20100301/b00e2257/attachment.htm>