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    MD7A: Fresh water to raw water?

    Thanks, the volvopentashop site was useful, and it does show that the water flows into the water pump first and out through the thermostat into the exhaust. Actually, the 2 lines from the heat exchanger run to the rear gear and the thermostat. The volvo site does not show the rear gear, but...
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    MD7A: Fresh water to raw water?

    I had thought of making a vacuum pump from an old gas cap and a siphon pump, but since the fresh-water setup seems to be an aftermarket kluge, and the MD7A was intended as a raw water engine, I would like to make it back to a raw-water engine. One issue I have with that is to make sure the...
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    MD7A: Fresh water to raw water?

    Yeah, I understand the issues with going to fresh after it has been running on salt water, and the conversion was clearly an aftermarket project... I had not seen a freshwater cooled MD7A before. I believe that by bypassing the heat exchanger I could get water through the whole engine and send...
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    MD7A: Fresh water to raw water?

    My new to me md7a has overheating problems. This engine is an aftermarket-converted freshwater engine. The raw-water circuit has issues from barnacles on thr intake. that i can fix, and sludge in the exhaust pipe i ready cleared. But when I still noticed overheating even with a stream of water...
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