Hi Dave
Does it have a saildrive? I had a Volvo MD5A with a saildrive, no zincs on the engine - just a big one on the drive leg. With the drive leg being made of aluminum it would be the first to corrode anyway.

Graham Collins
Secret Plans
C&C 35-III #11

On 2013-03-18 7:27 PM, Dr. David Montgomery wrote:
Howdy all,

So my friend picked up an older boat recently with a Volvo Penta MD7 engine. 
There is no mention of zincs to be replaced anywhere. Evidently  the engine's 
cooling system draws water from out side and runs that through the engine and 
out again. Given that the boat is in salt water would it not seem likely that 
zincs would be needed?

Your ideas most appreciated!

Dave
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