My 1968 31 Commander Salon has a heat exchanger that the zinc port was soldered shut ( i suspect abandoned because of corrosion). Does anyone have a source for replacement units? It appears the port and starboard units are identical. The port exchanger the zinc fitting is on top. The starboard fitting was on the bottom.
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Pics of the zinc and exchanger? My '74 doesn't seem to have zincs on the heat exchangers, none I've spotted. Maybe I've just not looked in the right place.
I will take a picture for you. It is a standard pencil zinc that screws into a plug. On my port exchanger it is on top inboard. On the starboard you can see where the shell was patched and the female fitting eliminated on the bottom outboard.
A good friend of mine has a complete closed cooling system from a Q
Salvaged from a CC Catalina .
I can give you his contact of your interested.
Jeremy@custommarine.biz