Josh, I've always been told that it has more to do with more complete combustion of the fuel at a higher temperature, especially for diesel engines. Diesel engines operated at to low a temperature tend to clog the exhaust manifold and exhaust with carbon, similar to what also happens if a diesel engine is run at to low an RPM. Bill MYSTY Landfall 39 ____________________________________ From: cnc-list@cnc-list.com Reply-to: sam.c.sal...@gmail.com To: cnc-list@cnc-list.com Sent: 5/22/2014 10:15:41 P.M. Eastern Daylight Time Subj: Re: Stus-List Yanmar 3QM30 thermostat for converted system
The same reason your car runs at or above boiling in a pressurised system. Less heat (energy) goes out with the cooling water, and instead goes out the output shaft as torque. There's also some thermodynamic stuff going on in the combustion chambers, but as I get older, my brain fills up quicker and the details elude me! sam :-) From: Josh Muckley Sent: Thursday, May 22, 2014 6:45 PM To: sam.c.sal...@gmail.com Subject: Re: Stus-List Yanmar 3QM30 thermostat for converted system What is the process which causes higher temps to be more effiecient? Better combustion? Thinner oil? Josh On May 22, 2014 6:57 PM, "via CnC-List" <_cnc-list@cnc-list.com_ (mailto:cnc-list@cnc-list.com) > wrote: I think you guys are all missing the point. Raw water cooled engines run cool in an attempt to limit the crap (salts etc.) coming out of solution and clogging up your cooling chambers in the block. They sacrifice efficiency to extend the life of your block. Fresh water cooled engines don't have crap in the cooling water so are able to run at designed (efficient) temps. sam :-) C&C 26 Liquorice Ghost Lake Alberta From: Josh Muckley via CnC-List Sent: Thursday, May 22, 2014 2:10 PM To: C&C List Reply To: Josh Muckley Subject: Re: Stus-List Yanmar 3QM30 thermostat for converted system Paul, my counter point is that the engine, as Bill Bina put it, was designed to run a certain temp. Presumably that of the existing thermostat. It sounds like the thermostat is close to 150. If you heat the water more than 120-130 there is safety concern regarding scalding. Changed the stat and you also have to change the high temp switch. Just my thoughts, Josh Muckley S/V Sea Hawk 1989 C&C 37+ Solomons, MD On May 22, 2014 1:53 PM, "PME via CnC-List" <_cnc-list@cnc-list.com_ (mailto:cnc-list@cnc-list.com) > wrote: Hi Josh, Changing the thermostat and allowing the engine to run hotter improving both the efficiency in making hot potable water and fuel efficiency. - Paul E. 1981 C&C Landfall 38 S/V Johanna Rose Carrabelle, FL On May 22, 2014, at 12:54 AM, via CnC-List <_cnc-list@cnc-list.com_ (mailto:cnc-list@cnc-list.com) > wrote: Message: 17 Date: Wed, 21 May 2014 22:43:00 -0500 From: Josh Muckley via CnC-List <_cnc-list@cnc-list.com_ (mailto:cnc-list@cnc-list.com) > To: "C&C List" <_cnc-list@cnc-list.com_ (mailto:cnc-list@cnc-list.com) > Subject: Re: Stus-List Yanmar 3QM30 thermostat for converted system Message-ID: <_CA+zaCRCycHH9bXfOgJ6MdjN02sDy10LYERg3v-0=QjRu5N2Z5Q@mail.gmail.com_ (mailto:CA+zaCRCycHH9bXfOgJ6MdjN02sDy10LYERg3v-0=qjru5n2...@mail.gmail.com) > Content-Type: text/plain; charset="iso-8859-1" Why change? Just let the engine run cooler. Josh Muckley 1989 C&C 37+ S/V Sea Hawk Solomons, MD On May 21, 2014 2:07 PM, "PME via CnC-List" <_cnc-list@cnc-list.com_ (mailto:cnc-list@cnc-list.com) > wrote: _______________________________________________ This List is provided by the C&C Photo Album Email address: _CnC-List@cnc-list.com_ (mailto:CnC-List@cnc-list.com) To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album Email address: _CnC-List@cnc-list.com_ (mailto:CnC-List@cnc-list.com) To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album Email address: _CnC-List@cnc-list.com_ (mailto:CnC-List@cnc-list.com) To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com _______________________________________________ This List is provided by the C&C Photo Album Email address: CnC-List@cnc-list.com To change your list preferences, including unsubscribing -- go bottom of page at: http://cnc-list.com/mailman/listinfo/cnc-list_cnc-list.com
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