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-   -   exhaust/ head port mismatch? (https://www.offshoreonly.com/forums/general-boating-discussion/296418-exhaust-head-port-mismatch.html)

chrisf695 05-15-2013 11:06 AM

exhaust/ head port mismatch?
 
Does anybody know if its still ok for the ports to be mismatched? My heads are D shaped and the exhaust ports are oval shaped. I have spoken with a tech from Profiler on the this and he said it shouldn't be an issue considering I have thru hull, which means theirs no back pressure. I guess its the issue of not having the same amount of gasket compared if they were matched. The person I bought my exhaust from had the same issue and has been running like this for a year with no problems... I guess I'm just looking for some more feedback... Thanks!

wannabe 05-15-2013 11:50 AM

No, that is not good. They should match or at least the exhaust manifold should not block any of the exhaust port.

Wannabe

FIXX 05-15-2013 04:09 PM

fixx
 

Originally Posted by chrisf695 (Post 3926048)
Does anybody know if its still ok for the ports to be mismatched? My heads are D shaped and the exhaust ports are oval shaped. I have spoken with a tech from Profiler on the this and he said it shouldn't be an issue considering I have thru hull, which means theirs no back pressure. I guess its the issue of not having the same amount of gasket compared if they were matched. The person I bought my exhaust from had the same issue and has been running like this for a year with no problems... I guess I'm just looking for some more feedback... Thanks!

take a round port exhaust gasket and match it up to your heads,,if theirs no obstruction then the is nothing to worrie about..

johnnyboatman 05-15-2013 09:44 PM

I thought the exhaust ports were d shaped, intake would be square , rect, or round.

FIXX 05-15-2013 10:57 PM

fixx
 

Originally Posted by johnnyboatman (Post 3926465)
I thought the exhaust ports were d shaped, intake would be square , rect, or round.

i think he ment that hhe cylinder heads exhaust ports are D shaped and his manifolds are oval port shaped..


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