Josh, Are the rpm numbers for a specific engine or for general reference? I have a 3HMF, 3-cylinder, normally aspirated, diesel, engine, rated to produce 27 hp at 3200 RPM, so I run at 2300-2400 rpms....am I doing this wrong?
Thanks Richard s/v Bushmark4: 1985 C&C 37 CB; Ohio River, Mile 604; Richard N. Bush 2950 Breckenridge Lane, Suite Nine Louisville, Kentucky 40220-1462 502-584-7255 -----Original Message----- From: Josh Muckley via CnC-List <cnc-list@cnc-list.com> To: C&C List <cnc-list@cnc-list.com> Cc: Josh Muckley <muckl...@gmail.com> Sent: Fri, Sep 14, 2018 4:07 pm Subject: Re: Stus-List Yanmar 3gm Ventilation 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 _______________________________________________ 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
_______________________________________________ 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
