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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