I've been kicking around the idea of using my dual source hot water
heater backwards as a block heater. Will this work? I couldn't find anyone who seems to be doing it...
How it would work: turn on the 110V power to the hot water
heater, use a small inline pump to circulate coolant
through the hot water exchanger and engine
block. I obviously wouldn't keep this on all the time...just a few hours prior to getting under way on a cold day. My Yanmar 3GM30
is rough starting in the fall/winter...without glow plugs and all.
Any big show stoppers with a setup like this? Or am I better off installing a block heater?