Volvo MD2b engine anode?

[Zendoc]

Hello All,

I've recently become the owner of an MD2b which is in not too bad a shape and I'm h to hoping eep it that way. I've been all over the engine and can't find any evidence of an engine anode. I can't find any reference to one in the workshop manual or the instruction book. Does anyone know if there is one or not, so I can stop searching?!

Many thanks,

John.

[Fishspearit]

No, there's not one in the md2b. I had the same engine on my last boat that always amazed me. Over 20 years of raw salt water flowing through the block, 7 years and thousands of hours later it was still running great when I sold the boat. Every time I started the engine the first 10 seconds of water pumped out the back would be rust colored before clearing up. Just good quality steal and heavy wall thickness for the cooling passages. The important thing to remember is when the boat is in the water, it's necessary to run the engine at least once a week, the stagnant water becomes more electrolytic and speeds up the corrosion if it's allowed to sit in there. Another usefull tidbit, the smallest orifice in the cooling passages is in the thermostat housing, so if you get a blockage from any debris it's almost always in that thermostat housing. Use a good raw water strainer, my boat didn't even have one when I got it.