Join Date: Sep 2007
Location: Fingerlakes & Great Lakes New York
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I may be way off, but it has been my experience that having dissimilar metals on the individual piece of equipment is only part of the problem.
I thought having dissimilar metals at alll in contact with seawater could be a problem.
Of course they may need to be electrically connected for it to be an issue; but in my experience, every piece of metal is electrically connected!
For instance, the heat exchanger might be bronze, the shaft stainless, the prop bronze, etc. etc. Even though the heat exchanger may not have direct connection to the engine, the potential (pun intended) is there.
I would retrofit a zinc in the heat exchanger if there is not a place for one.
I got an Old Fat Boat
She's Slow But Handsome
Hard In The Chine, but Soft In The Transom
I Love Her Well, And She Must Love Me
But I think It's Only For My Money
. ..... Gordon Bok