Quote:
Originally Posted by erickonphoenix
I believe some of the vintage copper lined single piston diesels did have direct contact with sea water but that would be way before my time. All the diesel engines I worked on would draw seawater aboard, pipe it through a freshwater heat exchanger which would cool the engine. The Yanmar turbo diesel on my boat used the onboard water system as it's service line via the hot water heater. It was such an effective system when we could fire the engine up under sail and take a hot shower in minutes.
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Mine is a Volvo Penta 2002 two cylinder diesel. I have a separate hot water heater.