I have a universal 5432 diesel motor in my N33 that has started to weep sea water from the rear of the raw water pump. So this means that the seal has given up the ghost and a new pump is required. The universal stock pump is 1500 CAD and an Ancor replacement is 500 CAD. This seems like a lot of money to me and I wonder if there is a cheaper solution available.
Anybody have any suggestions?
As well thinking about this: Why is the pump mechanical? Why not an inline electric pump? The motor is running so there is lots of current available and surely a 10 or 15A pump should flow enough water to do the job. Anybody heard of using an electric pump for this purpose?
Blake-
You may also consider rebuilding. Here’s an example of a $US100 full rebuild kit on ebay, Here’s the steps (though for a Westerbeke): Rebuilding A Raw Water Pump . I would not go the electric pump route. Besides being a less reliable pump and still susceptible to seal wear, even with a thermostat controlling water circulation, your water flow could be too fast or slow. Also, you are introducing multiple added points of failure besides the pump (alternator, regulator, fuse, etc.) into what is otherwise an extremely reliable power plant.
Dan Weinstein
Look Farther, 30C #205
East Greenwich RI