Mixing elbow status and alloy

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Blair Clark

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Mar 12, 2026, 5:45:11 PM (4 days ago) Mar 12
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Hi there,

Does anyone know if this an original, or replacement mixing elbow and what alloy it may be?

Thank you,

Blair 
Coincidence C&C 34+

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David Knecht

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Mar 12, 2026, 6:32:06 PM (4 days ago) Mar 12
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Hi Blair-  What engine?  On my Universal M4-30 here is what my mixing elbow looked like.  I thought it might be plugged but it turned out to be fine internally.  Dave
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David Knecht
Emeritus Rear Commodore/Thames Yacht Club
Emeritus Professor/University of Connecticut
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Blair Clark

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Mar 12, 2026, 6:54:52 PM (4 days ago) Mar 12
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Sorry I should have included that critical piece of info…,it is a yanmar 3GM30F installed in a 1990 34 +

Thank you very much for replying.

Blair

Francois Rivard

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Mar 14, 2026, 1:35:17 PM (2 days ago) Mar 14
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Hi Blair, 

Itlooks like a standard steel Yanmar unit that's been replaced moderately recently. You need to take it off and look inside to see the state of affairs.

The stainless steel options are pointless as it gets clogged long before it rusts out.  If it's clogged just replace with the same and go sailing! 

François Rivard 

Blair Clark

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Mar 14, 2026, 4:33:31 PM (2 days ago) Mar 14
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Thank you for the feedback Francois. Makes sense:

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