The 2GM20F is a freshwater cooled engine with a heat exchanger taking heat out of the antifreeze that permanently surrounds the cylinder block and head. So there is no need to get concerned about the thermostat as that is part of the circuit that contains antifreeze and you are not going to,drain that. The circuit that contains the raw water is: Through hull suction, strainer, raw water pump, heat exchanger, exhaust elbow, water muffler, exhaust through hull. I don't put any antifreeze through that circuit; just drain it by opening the tap at the back of the heat exchanger; opening the drain on the strainer; taking off the raw water pump and removing the impeller; opening the drain on the water muffler. That completely drains the raw water circuit - done. Reverse order in the spring! My boat is on a lake and I pull it in the fall, so it's currently on the hard. If I was in salt water I'd probably flush freshwater through it before I drained it.
sam :-) C&C 26 Liquorice Ghost Lake Alberta On 2012-10-20, at 5:37 AM, "D.Drake" <d...@rogers.com> wrote: > Well I never actually timed the process ,but I have never had to rush around > during it either ! It is a little SB 8 so how much water does it really need > (haha) > On 20/10/2012 7:12 AM, dwight veinot wrote: >> 3-4 minutes…your pump is very slow…mine puts at least 4 L through per >> minute…I am surprised that you don’t have a cooling problem >> >> Dwight Veinot >> C&C 35 MKII, Alianna >> Head of St. Margaret's Bay, NS >> From: CnC-List [mailto:cnc-list-boun...@cnc-list.com] On Behalf Of D.Drake >> Sent: October 20, 2012 8:04 AM >> To: cnc-list@cnc-list.com >> Subject: Re: Stus-List Winterizing a 2GM20F >> >> Sebastion >> That's pretty much how I go about it with the exception that I have crew >> monitor the bucket of antifreeze to ensure that it never goes dry . >> It takes my SB 8 Yanmar about 3-4 minutes to start spewing antifreeze out of >> the exhaust . at which point I stop the engine . The next step is to open >> the cooling circuit drain on the right (Portside) side of the engine to >> ensure that antifreeze is past the thermostat .The important thing is to get >> as much water out of the internal engine circuits as possible and fill it >> with antifreeze >> >> >> >> On 19/10/2012 10:53 AM, Sébastien Lemieux wrote: >>> I'll be winterizing my 2GM20F for the first time tomorrow (saturday) and >>> would like some advices on the practical way to fill up the raw water >>> circuit with antifreeze. I plan on detaching the intake tube of the raw >>> water circuit from the seacock and putting it in a bucket filled with >>> antifreeze (I'm aiming for 2 gallons, is that enough?). Then, I assume I >>> need to start up the engine and wait until antifreeze comes out from the >>> exhaust thruhull. >>> >>> Should I just crank up the engine (with decompression lever open)? If I >>> need to start the engine, how long should I expect to it? Do you leave the >>> tube in the bucket unattended while you stand near the control panel to >>> stop the engine? >>> >>> Thanks in advance! >>> >>> Sébastien Lemieux >>> Merlot X - C&C 30 mk2 1987 >>> Mooney Bay - Lake Champlain >>> >>> >>> >>> >>> >>> >>> _______________________________________________ >>> This List is provided by the C&C Photo Album >>> http://www.cncphotoalbum.com >>> CnC-List@cnc-list.com >> >> -- >> D.Drake 73 Jensen Healey C&C 26 >> No virus found in this message. >> Checked by AVG - www.avg.com >> Version: 2012.0.2221 / Virus Database: 2441/5341 - Release Date: 10/19/12 >> >> >> _______________________________________________ >> This List is provided by the C&C Photo Album >> http://www.cncphotoalbum.com >> CnC-List@cnc-list.com > > -- > D.Drake 73 Jensen Healey C&C 26 > _______________________________________________ > This List is provided by the C&C Photo Album > http://www.cncphotoalbum.com > CnC-List@cnc-list.com
_______________________________________________ This List is provided by the C&C Photo Album http://www.cncphotoalbum.com CnC-List@cnc-list.com
