water leak

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  • August 18, 2017 at 11:29 am #7946
    searay
    Participant

      hey guys
      I have a 1956 30 hp evinrude and a 1958 35 hp evinrude . both leak water at the bottom of head .took head off of the 30 hp and noticed that the
      rectangle water passage hole at bottom of gasket is larger the the hole on the head , also there is a hole in the pan under the head for the water to drain out. the question is , is this head supposed to leak like this and why ? looks to me like the rectangle passage way in gasket was punched out wrong. what do you think ? Both motors run great. thanks for your answers

      August 18, 2017 at 11:35 am #63355
      fleetwin
      Participant

        US Member - 2 Years

        Well, no water should be leaking out between the head and the block into the motor pan…
        I’m not quite sure about the condition you are describing, post some pictures for us. Both engines leak this way? Seems like an odd coincidence…

        August 18, 2017 at 9:05 pm #63379
        garry-in-michigan
        Participant

          Lifetime Member

          I would tend to believe some one got a lot of bad gaskets and suspect Sierra Marine who tends to buy from the lowest bidder. . . 😕

          August 18, 2017 at 9:07 pm #63380
          garry-in-michigan
          Participant

            Lifetime Member

            I would tend to believe some one got a lot of bad gaskets and suspect Sierra Marine who tends to buy from the lowest bidder. . . 😕

            August 19, 2017 at 10:32 am #63419
            searay
            Participant

              wish I knew how to post pictures ,im sure now the head gasket was cut wrong
              thanks fleetwin and Gary

              August 19, 2017 at 11:41 am #63424
              fleetwin
              Participant

                US Member - 2 Years

                Email the pics to me, I will post them…
                dkellogg56@gmail.com
                Don

                August 19, 2017 at 1:06 pm #63433
                chris-p
                Participant

                  Perhaps the wrong gasket is installed.

                  August 19, 2017 at 2:24 pm #63438
                  outbdnut2
                  Participant

                    US Member - 1 Year (includes $3 online payment fee)

                    This can also happen if the old gasket wasn’t completely scrapped off both mating surfaces.
                    Dave

                    August 19, 2017 at 2:56 pm #63441
                    PugetSoundBoater
                    Participant

                      Did you resurface the head before you reinstalled it with the new gasket? I know this is asking a lot,but If you could determine which side of the gasket it is leaking from,that would narrow the problem down for you. I had the same very slight water leak problem on my 9.9, i solved it by using Permatex Indian Head Gasket Shellac on the very outside 1/8th inch on the outside of the water jacket after i resurfaced the head and cleaned the block surface really well with Acetone after removing the old gasket completely. Problem solved.

                      "Some people want to know how a watch works, others just want to know what time it is"
                      Robbie Robertson

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