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TEMP GETTING WARM-gctid807011

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    TEMP GETTING WARM-gctid807011

    Hey guys how is everyone doing. Put the boat in the water two days ago but one of my engines starts to get hot when I'm under way. A idle the temperature stays steady where it is supposed to be once I give it gas or go underway it rises and extra 20 degrees I just put new manifolds and risers new thermostat new raw water pump any ideas thank you. I have raw water cooled 5.7 bravo 2 carburetor engines

    #2
    Did you change all these items because you were having issues previously? Were the current exhaust shutters functioning or replaced during this time? Was there one missing? All hose connections good at the intake side of the raw water pump?
    Dave
    Edmonds, WA
    "THE FIX"
    '93 2556
    Carbureted 383 Vortec-Bravo II 2.0:1 18 1/4x19 P

    The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
    Misc. projects thread
    https://www.baylinerownersclub.org/f...56-gctid789773

    Comment


      #3
      No previous issues just preventive maintenance the manifolds and risers were 12 years old the raw water pump hasn't been changed in 3 years and the thermostat i change every year

      Comment


        #4
        Maybe a bad t stat? You can also double check water flow from the raw water pump to make sure it's actually pumping the proper volume.



        Attached files

        Dave
        Edmonds, WA
        "THE FIX"
        '93 2556
        Carbureted 383 Vortec-Bravo II 2.0:1 18 1/4x19 P

        The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
        Misc. projects thread
        https://www.baylinerownersclub.org/f...56-gctid789773

        Comment


          #5
          My engine temp started to rise before I did anything I checked the engine while running with a temperature gun found the issue was the gauge

          Comment


            #6
            Checking the volume of water pumping in , is that with the engine running or just sitting in the water and taking off the intake hose going to the pump ? Thank you... I appreciate your help boc is great

            Comment


              #7
              Boat in the water or drive fully submerged, remove the hose off the pump, you want to place the hose into a bucket, start the engine for 15 seconds shut down the engine, measure the water in the bucket.
              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


                #8
                Like chief said, your measuring the volume of water the raw water pump puts out (outlet side of pump) Try a new t stat first.
                Dave
                Edmonds, WA
                "THE FIX"
                '93 2556
                Carbureted 383 Vortec-Bravo II 2.0:1 18 1/4x19 P

                The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
                Misc. projects thread
                https://www.baylinerownersclub.org/f...56-gctid789773

                Comment


                  #9
                  Thanks guys I appreciate the input. Im gonna get my hands dirty this weekend. Thanks again have a great season

                  Comment


                    #10
                    Bravoitis!
                    Doug
                    1995 2859 -extensively rebuilt/restored 2016/17
                    496 big block - Bravo ll leg
                    The Doghouse
                    Prince George BC

                    Comment


                      #11
                      Yup yup


                      Joon, Kathy, Jaden & Tristan
                      Uniflite 42 AC, DD 671N
                      93 3058 sold
                      92 2855 (day boat)
                      91 Fourwinns 205 (lake boat)
                      Longbranch WA
                      Life is Good

                      Comment


                        #12
                        "sketch96" post=807174 wrote:
                        Bravoitis!
                        Could be a possability. Boat needs to be out of the water to find out.
                        Dave
                        Edmonds, WA
                        "THE FIX"
                        '93 2556
                        Carbureted 383 Vortec-Bravo II 2.0:1 18 1/4x19 P

                        The rebuild of my 2556 https://www.baylinerownersclub.org/f...76?view=thread
                        Misc. projects thread
                        https://www.baylinerownersclub.org/f...56-gctid789773

                        Comment


                          #13
                          The alfas have a spot where they collect salt, between the leg and the bell housing. I'm not sure if the bravos are the same or not. Otherwise you've done all the stuff I can think of.

                          Chay

                          Comment


                            #14
                            bravo is the same. Here's mine and this boat was never moored and always Flushed according to the PO. Flushing doesn't help this situation unfortunately.

                            The opening is almost totally closed off. Ok at idle. Not good underway.


                            Attached files

                            Doug
                            1995 2859 -extensively rebuilt/restored 2016/17
                            496 big block - Bravo ll leg
                            The Doghouse
                            Prince George BC

                            Comment


                              #15
                              Just talking with a friend of mine and he was having the same trouble he put thru hull fittings going to the pump and eliminated the pickup from the outdrive. He's very happy with the results. If it is the pickup from the outdrive going to the pump on the engine I might put the thru hull fittings in

                              Comment

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