Mixing elbow status and alloy

[Blair Clark]

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+

[David Knecht]

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

David Knecht

Emeritus Rear Commodore/Thames Yacht Club

Emeritus Professor/University of Connecticut

Basketball Capital of the World

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[Blair Clark]

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

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[Francois Rivard]

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]

Thank you for the feedback Francois. Makes sense:

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[Blair Clark]

Hello,

I am considering replacing the mixing elbow and manifold flange.

From experience can anyone please share if it is easier to get the exhaust water hose off of the mixing elbow before or after removing the assembly from the manifold?

Any other tips would be greatly appreciated

Thank you

Blair

902-423-4651

On Sat, Mar 14, 2026 at 2:35 PM Francois Rivard <jeanfranc...@gmail.com> wrote:

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