I can't answer your question, but I also thought about that recently and I realized that antifreeze is running around the head. While the block is cold, the thermostat is closed, directing the antifreeze around the head. Never had a problem but was curious about the water that might be remaining in there.
Paul Hood REFUGE - 1981 C&C34 on Georgian Bay /) From: David Knecht via CnC-List <cnc-list@cnc-list.com> Sent: November 20, 2024 8:33 AM To: CnC CnC discussion list <CnC-List@cnc-list.com> Cc: David Knecht <davidakne...@gmail.com> Subject: Stus-List Winterizing the engine After winterized my boat I got to thinking about the process of pumping antifreeze through the engine and water tank system. Some people winterize their house water system by blowing all the water out of the lines instead of pumping in antifreeze. If you did the same with the seawater side of the engine by simple running the engine until nothing came out of the exhaust hose, wouldn't that work to protect the engine from freezing over the winter? That might be a problem running a standard impeller in the water pump dry, but with a run-dry impeller, I don't see why it wouldn't work. Dave S/V Aries 1990 C&C 34+ New London, CT
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