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Keep from Freezing

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  • Keep from Freezing

    I have heard many ways to keep my engine from freezing over the winter (I keep the boat in the water year round and use her) I have the 100 watt light bulb in the bulge and it seems to work. vents covered.What I would like to know if anyone has tried block heaters? They are held to the oil pan with a magnet. My concern is as there is only about 6 inches of clearence from the bottom of the pan to the bottom of the boat will I risk cooking the glass bottom? or is there an alternate location to put it where it will be just as effective.I own a 1977 Chevy 5/7L (mercriser 250)

  • #2
    Re: Keep from Freezing

    Those don't get terribly hot. It can be mounted on the side of the oil pan rather than the bottom. That's about the only alternative. I like that better than the lightbulb. But if you're in the water and that's above 40 degrees, it can get awfully cold outside and not freeze the block. Pull it out of the water and all bets are off.
    Hey, Have you seen? They make Really Cool life preservers nowadays.
    So "Looking Dorky" is no longer an excuse for not wearing one.

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    • #3
      Re: Keep from Freezing

      It Seems it would do more good if it was mounted to the Block........You need to heat the Block,+ Manifolds..... Not the Oil......How about Under the manifolds, next to the engine block,...?????How many Watts is it rated ???Will it be alright when it gets Wet in the bilge ??????

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      • #4
        Re: Keep from Freezing

        Had a customer do all those things and he froze the water inlet line from the seacock to the pump.
        NO PERSONAL QUESTIONS, THIS IS WHAT THE FORUM IS FOR.

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        • #5
          Re: Keep from Freezing

          Go here WWW.bensaco.com Marine engine heaters designed specifically for this application.

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          • #6
            Re: Keep from Freezing

            Click here this ought to cure your problem.
            Don S.


            Please, no PM's (Private Messages) regarding boat/engine problems.
            That is what the forums are for.
            Only forum/moderator issues will be answered in PM's.

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            • #7
              Re: Keep from Freezing

              Hmmmmmmm, same link, same time, you owe me a beer Merc
              Don S.


              Please, no PM's (Private Messages) regarding boat/engine problems.
              That is what the forums are for.
              Only forum/moderator issues will be answered in PM's.

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              • #8
                Re: Keep from Freezing

                Now that was weired! nice timing Don S! I have one in my carpet cleaning truck. 750 watt model keeps extended Chevy Van above freezing SAFELY. I have a truckmounted machine powered by a gas engine in there so I'm concerned about FIRES and EXPLOSIONS.

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                • #9
                  Re: Keep from Freezing

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                  • #10
                    Re: Keep from Freezing

                    You'd do good to drain the water from the engine after every use in the winter. All it would take would be for the power to go out in a storm and your engine would be junk.

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                    • #11
                      Re: Keep from Freezing

                      I love living in Florida

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                      • #12
                        Re: Keep from Freezing

                        I remember oil dipstick heaters. You replaced the existing dipstick with this heater and it kept the oil warm.Anyone tried them?

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                        • #13
                          Re: Keep from Freezing

                          wife pulled her car into our detached, uninsulated garage. Its 15 degrees here and has been for 3 days. Snow melted off her car. That 750 watt marine heater is heating the truck which is heating the garage.

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                          • #14
                            Re: Keep from Freezing

                            so far I have lost 2 motors. actually not me but my customers, they brought them in today for winterizing a few days to late. no my problem now. we sent them all letters in october. we will repower come spring. the last 3 days have been very nice. if I winterize below 35 degrees I charge 150 an hour I did 5 in the last 3 days all below 29 degrees 3 have sat since august.
                            no tech questions by PM, they wont get answered.
                            you have to be trusted by the people that you lie to .

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                            • #15
                              Sign up today
                              Re: Keep from Freezing

                              Nothing like waiting till the last minute, Rodbolt, eh? "3 have sat since august" ???? Glad to see these people have money to throw around for new engines! (And it's job security for you marine mechanics!) I always try and get my boat winterized around the same time each year(end of october). My mechanic told me that when he starts getting a real large back log into the end of december, he'll tell the people to swing by with the boat if they are nervous of freezing and he'll at least pull the drain plugs off the block.

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