Yanmar Zinc

[PuttingDoctor]

Seems that once beyond 3 cyl. Yanmar omitted engine zincs. What have you done with your Yanmar 4 to combat galvanic corrosion?


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[Vasco]

Nothing in a 4JH3E and the oil cooler dies after 8 years or so (sailing 6 months a year).

[PuttingDoctor]

Originally Posted by Vasco

Nothing in a 4JH3E and the oil cooler dies after 8 years or so (sailing 6 months a year).

Yes but what are your habits re connection to shore power and resulting galvanic corrosion?

The question is really about why the smaller engines had zincs vs the 4 cyl.

[four winds]

The freshwater cooled 3gm30f has no zinc as well. None in the block/head or the heat exchanger.

Seawater cooled version does however.

I'm guessing there are no seawater cooled 4 cylinder Yanmars. Not sure though.

[Vasco]

Originally Posted by PuttingDoctor

Yes but what are your habits re connection to shore power and resulting galvanic corrosion?

The question is really about why the smaller engines had zincs vs the 4 cyl.

Seldom if ever, the six months is spent cruising.

Sorry misunderstood the question. By the way, I've had 2 3GM30f's and neither had a zinc.