On 2014/11/13 8:23 AM, John and Maryann Read via CnC-List wrote:

John

Your mixing elbow is original ie 32 years old......I am assuming it has spent its life in a 'salt water environment'. If so, there has to be some corrosion taking place on the inside.

A mixing elbow is not an expensive item and if you have taken yours off and put it back on, then do yourself a favor and replace it before it fails at the most inopportune time.

In 2012, a fellow club member with a 1984 C&C 32 had his mixing elbow 'split' at the top of elbow spewing salt water and gases into his engine compartment while motoring up the coast. He made it back to the club O.K. but he then lost several weeks in the sailing season getting someone to replace it for him.

I took his old mixing elbow and cut it open to examine it......while the outside wall looked fine, the inside was in pretty rough shape. And the problem wasn't carbon buildup but salt water corrosion. The following season, I replaced mine......I deem it preventable maintenance and what will eventually fail.

Rob Abbott
AZURA
C&C 32 - 84
Halifax, N.S.




Our 34 has the original Yanmar 3GM which is working like a charm.  How does one 
tell if the mixing elbow is due for replacement??.  Ours still has the original 
mixing elbow which we removed and inspected about 12 years ago. It was fine.  
Lots of water comes out the exhaust and engine performance is fine.  Engine is 
used mostly for motoring in and out of the mooring field with periodic runs of 
an hour or so to get to the starting line. I was thinking of removing the hose 
and use a mirror and spot light to look inside??


John and Maryann
Legacy III
1982 C&C 34
Noank, CT


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