Re: How hot does your diesel run?
My Universal M25 runs at 180ºF exactly.
A couple of weeks ago I was motorsailing through heavy chop in 'Vineyard Sound (trying to get to Cuttyhunk before dark), and did not realize that the angle of heel on starboard tack was great enough to partially lift the intake out of the water. After about an hour, I heard the "beep, beep, beep..." of the temperature alert (for the fist time ever), and quickly shut down the engine. I looked at the temp gauge, and it was no more than 185ºF. I checked the coolant level (which was high), oil level, raw water strainer, and the impeller, and found that all was OK. We changed tack, and sailed in to the outer harbor. I started the engine to get into the inner harbor, and all worked as it should.
I am glad to have both an audible alarm and a gauge.
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USCG Licensed OUPV Captain, ASA 101/103/104/105 Certified Instructor - Also certified in Recreational Marine Electrical Systems
Last edited by eherlihy; 08-30-2013 at 03:13 PM.