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Old 21-09-2021, 23:24   #1
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Vetus M4.14 has no anode...

While familiarizing myself with the Vetus M4.14 on my new-to-me Westsail 32, I was dumbfounded that I could not find any anode, or mention of any anode in the manual. It appears that in fact, there is no anode, which blows my mind for a marine conversion.

Notably, the engine was installed in 1987, and seems in pretty good shape for its age, and considering the journeys it has made (probably ~3000 hours), so it's not exactly clear to me how the engine has been spared severe corrosion after all this time.

Should I make an attempt to add an anode to the raw water loop somewhere?
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Old 22-09-2021, 08:10   #2
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Re: Vetus M4.14 has no anode...

If it ainít brokeÖÖ.

Our engine has an anode fitted and itís been the sole source of heat exchanger clogging for the last 2k hours. Once I run out of anodes Iím done changing them.
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Old 23-09-2021, 17:06   #3
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Re: Vetus M4.14 has no anode...

The salt water system has several different metals in contact with the water. When I run into an engine w/o a zinc, I add a tee so I can add a zinc. Or I drill and tap some part of the salt water system. Sometimes having a white powder or crystals at a connections means no zinc or sections of the salt water path are not bonded. All metals in a salt water cooling system need a metal to metal contact or a bonding wire. The white can show up anywhere, not just a connection of 2 dissimilar metals.
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Old 26-09-2021, 12:06   #4
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Re: Vetus M4.14 has no anode...

Quote:
Originally Posted by Lepke View Post
The salt water system has several different metals in contact with the water. When I run into an engine w/o a zinc, I add a tee so I can add a zinc. Or I drill and tap some part of the salt water system. Sometimes having a white powder or crystals at a connections means no zinc or sections of the salt water path are not bonded. All metals in a salt water cooling system need a metal to metal contact or a bonding wire. The white can show up anywhere, not just a connection of 2 dissimilar metals.

Whilst I'm no corrosion engineer what Lepke said sounds logical to me.
I'd follow his advice.
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