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OMC 2.3, add fresh water cooling or not?-gctid813531

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    OMC 2.3, add fresh water cooling or not?-gctid813531

    I recently got a 89 bayliner with an OMC 2.3. The owner before me had the engine completely rebuilt. The engine only had 2 hours on it since being rebuilt.

    When I got home I put on some muffs, ran it for a few minutes and then took it to a local launch. After driving around for a few minutes there was a huge bang and then the engine idled down and wouldn't start.

    After getting home I walked around the back and saw that the muffs were still on. Yes, I know, I don't know how I missed that.

    I took it to a local shop and had a new head gasket put on, an automotive one. Now the dilemma...

    They don't make a marine head gasket for that motor anymore. Most of my boating activity is in salt water. My original thought was putting a fresh water cooling system on it to help the gasket last longer. When I tried to order one, the guy I talked to made it sound like that was a bad idea. His concern was (because of the age of the motor) the water channels may not be clear enough to support a heat exchanger setup. He also mentioned that the pump may not support a fresh water system, since it wasn't designed to do that. He spent a lot of time telling me all the things that could go wrong.

    My goal now is to get this motor to last as long as possible. Am I better off just leaving it alone (raw water) and thoroughly flush after each use? Am I better off putting in a fresh water system?

    Thanks!

    #2
    "cgreathouse" post=813531 wrote:
    I recently got a 89 bayliner with an OMC 2.3. The owner before me had the engine completely rebuilt. The engine only had 2 hours on it since being rebuilt.

    When I got home I put on some muffs, ran it for a few minutes and then took it to a local launch. After driving around for a few minutes there was a huge bang and then the engine idled down and wouldn't start.

    After getting home I walked around the back and saw that the muffs were still on. Yes, I know, I don't know how I missed that.

    I took it to a local shop and had a new head gasket put on, an automotive one. Now the dilemma...

    They don't make a marine head gasket for that motor anymore. Most of my boating activity is in salt water. My original thought was putting a fresh water cooling system on it to help the gasket last longer. When I tried to order one, the guy I talked to made it sound like that was a bad idea. His concern was (because of the age of the motor) the water channels may not be clear enough to support a heat exchanger setup. He also mentioned that the pump may not support a fresh water system, since it wasn't designed to do that. He spent a lot of time telling me all the things that could go wrong.

    My goal now is to get this motor to last as long as possible. Am I better off just leaving it alone (raw water) and thoroughly flush after each use? Am I better off putting in a fresh water system?

    Thanks!
    Wait...what? You started it up on the muffs....then did you actually FORGET it was running and you just drove away? Or did you just leave the muffs on when you launched it, and started it in the water with the muffs still on?

    Either way, you may have more to worry about than the head gasket.

    I wouldn't waste my time with FWC. Replacing the head gasket, if you ever need to, is probably cheaper, more reliable, and easier....and the current head gasket may outlast the motor anyway if you flush it regularly.

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      #3
      One of many google hits.

      http://www.go2marine.com/product/159...et-912764.html
      Be good, be happy, for tomorrow is promised to no man !

      1994 2452, 5.0l, Alpha gen. 2 drive. Sold ! Sold ! Sold !

      '86 / 19' Citation cuddy, Merc. 3.0L / 140 hp 86' , stringer drive. Sold ! Sold ! Sold !

      Manalapan N.J

      Comment


        #4
        Hmm, wish I would have know that. I was just going by what the shop was telling me. Too late now.

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