exhaust flapper

taildragger101

Seaman Apprentice
Joined
Jun 12, 2011
Messages
48
Need some help, Have a 3.0 OMC that I am replacing the head gasket in for a friend. When I pulled the head I noticed the exhaust flapper didnt look right to me, never replaced one but this one looks upside down to me. The high side is up . I s this correct? He said he replaced it and now it dosnt have power.
 

Howard Sterndrive

Rear Admiral
Joined
Nov 5, 2008
Messages
4,603
Re: exhaust flapper

that would do it.. lol

you should be able to push it down and open the same way exhaust would and verify the old one isn't jammed down the pipe or in the outdrive clogging things up.
 

chrisrooter

Seaman Apprentice
Joined
Aug 11, 2012
Messages
41
Re: exhaust flapper

I just replace mine for a 2.3l and the hinge side faces up looking down into tube, I had to file mine a little to get it moving without obstruction. If you stop abruptly stop the water should ride up exhaust and hit flat part of flapper and close it. I think mine was slight beveled too, not sure if you can mount it the other way logistically?
 
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