Engine anode

[rajjes]

Hi,

I'm marinising a 2 cyl Kubota (z482 model) and just had a heat exchanger delivered. From some research I understand that Beta and Nanni engines have a (pencil?) anode attached to/in the heat exchanger.

Would someone provide more details on this, type of anode, method of attachment etc...as I would like to fit something similar, or would an external hull anode attached to the engine or prop shaft anode provide an equivalent substitute?

Many thanks for your help.

 

[sheeplove]

Contact Beta Marine for local suppliers for your anode.

 

[KellysEye]

If I understand your question properly then marine heat exchangers come with a pencil anode that screws into the heat exchanger. If you have bought a heat exchanger that doesn't already have an anode then I don't see how you can fit one. The anode has to be internal and some heat exchangers eat anodes at an extraordinary rate.

 

[rajjes]

Yes, that's exactly my situation, is there an alternative way that I can connect the heat Exchanger to an anode?

 

[neil_s]

A hull anode will certainly help - after I sorted the wiring to mine, the engine anode consumption dropped from 1 every 6 months to 1 every two years.

Neil

 

[KellysEye]

Not that I'm aware of. The problem is caused by salt water and dissimilar metals inside the heat exchanger thus the anode must be inside. Are you certain that the heat exchanger doesn't have an anode - just look for a nut with a bit of thread visible (although some screw all the way in and are difficult to spot). As a rule of thumb it's at one end or the other.

 

[VicS]

[ QUOTE ]
or would an external hull anode attached to the engine or prop shaft anode provide an equivalent substitute?

[/ QUOTE ]

No! An anode must be reasoably close to what it is to protect, have agood electrical connection to it and "be able to see" it . The latter point does not have to be taken too literally though but is quoted from MG Duffs website.


Sorry to disagree Neil.

 

[MoodySabre]

I had a Beta 10 with the pencil anode that was threaded at the end nearest the bolt head and screwed into the end of the heat exchanger. After one season it was 90% gone.

From the Beta Marine website you can download engine drawings that may show it http://www.winton.ch/Templates/seagoing.html

 

[Col]

You will need a pencil anode and anode holder.
These are Volvo ones that I am fitting in a marinised Mitsubishi engine. I need to tap out a couple of 1/4BSP threads to fit them.