Engine at 180°F doesn't sound bad. I believe the steam you see is just the effect of cooler surrounding air and water. The measure of adequate cooling which I've heard is, being able to place your hand on the exhaust elbow. It might be warm... Not hot.
Max continuous = 3200rpm Max 1 hour = 3400 Max instantaneous = 3600 I try to run as high of a load as often as possible. Greater than 80% load is recommended. 2600 is enough. 2800 is even better. FYI most Yanmar tachs are inaccurate. My tach is 200 rpm slow. Josh Muckley S/V Sea Hawk 1989 C&C 37+ Yanmar 3HM35F Solomons, MD On Fri, Sep 14, 2018, 3:50 PM James Bibb via CnC-List <cnc-list@cnc-list.com> wrote: > OK…engine seems to run warm/hot…temp is not above 180 but I’m not running > at 3,000 RPM, usually 2800. …couple of questions…. > > Lot’s of steam out the exhaust which I believe is more do to the balance > of coolant water in either muffler or the mixture elbow. I sometimes > remove the engine access panels on either side and I notice an easy 5-10 > degree drop in temperature from the gauge. > > I’ve checked the coolant, impeller, heat exchanger for clear and the > thermostat last year. Haven’t checked past the coolant elbow or into the > muffer. > > Does anybody have any experience and does anybody introduce a fan back-up > cooling system into the engine compartment and if so how do they and where > do they vent on a sailboat through the hull or deck? > > Does the steam indicate overheating or based on temperature am I running > fine? > > Other question, what RPM do folks run their engine at for cruising speed? > > > > > James Bibb > SV Darwin’s Folly > 1991 C&C 34/36R > Juneau, Alaska > > > > _______________________________________________ > > Thanks everyone for supporting this list with your contributions. Each > and every one is greatly appreciated. If you want to support the list - > use PayPal to send contribution -- https://www.paypal.me/stumurray > >
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