35 Big twin – high speed problem

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  • August 14, 2018 at 1:51 pm #81128
    outbdnut2
    Participant

      US Member

      It’s amazing you got it to run as good as you described!
      Dave

      August 14, 2018 at 2:14 pm #81129
      Mumbles
      Participant
        quote Richard L. Paquette:

        After building the motor out of spare parts,

        Was the head gasket used to? If so, it’s the same old story, pay now or pay later! Lets just hope the water intrusion hasn’t damaged the crank or bearings.

        August 14, 2018 at 4:30 pm #81136
        fleetwin
        Participant

          US Member

          I’m glad you got to the bottom of it and a head gasket will solve the problem

          August 14, 2018 at 9:41 pm #81150
          chris-p
          Participant

            Yup that will do it! First thing I do on any motor, mine or others, is check compression. Before I touch a tool to it.

            August 15, 2018 at 4:20 am #81183
            garry-in-michigan
            Participant

              Lifetime Member

              Before installing the new head gasket’ make sure there are no low spots (Erosion or warpage) in the head or block –

              Any bad gaps in the block would require a milling machine –

              And this is the sequence with which to tighten the head bolts, ignore the V-4 figures – Your Big Twin head torque is higher . . . 😉

              August 16, 2018 at 1:44 am #81261
              Richard L. Paquette
              Participant

                Canada Member

                Success!

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