Home Forum Ask A Member 1956 Johnson 30hp Motor Won’t start But Spark Plugs have Spark!

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  • #320603
    rhalbert10@outlook.com
    Participant

      US Member

      Someone should have told me I could divide that by 12!!  LOL – obviously a Noob when it comes to torque wrenches!!

      #320606
      Sam M.
      Participant

        Canada Member

        Everyone talks about using a torque wrench on the flywheel nut.  I have looked into it and it says for my motor it should be 720-780 in/lbs but I can’t even find a wrench that goes that high.  Any suggestions?

        Someone should have told me I could divide that by 12!!  LOL – obviously a Noob when it comes to torque wrenches!!

        Haha! 🙂  It’s great that you are using a torque wrench on the flywheel nut.  Some people use impact guns, but I believe proper flywheel torque is important for both you and your motor’s safety.  Keep up the good work!

        #320618
        labrador-guy
        Participant

          US MEMBER PAY BY CHECK

          Everyone talks about using a torque wrench on the flywheel nut.  I have looked into it and it says for my motor it should be 720-780 in/lbs but I can’t even find a wrench that goes that high.  Any suggestions?

          Just divide your inch pounds by 12 and use a foot pound wrench!

          dale

          #320620
          Buccaneer
          Participant

            US Member

            “inch pounds” is different than “foot pounds”.
            I believe 720 inch pounds is 60 foot pounds.
            720 / 12 = 60

             

            Prepare to be boarded!

            #320621
            JACQUES
            Participant

              yes…  chatgpt can solve these questions and is actually an pretty good search utility for most problems… but the POPE does not like it 🙂

              To convert inch-pounds (in-lb) to foot-pounds (ft-lb):

              ft-lb=in-lb12\text{ft-lb} = \frac{\text{in-lb}}{12}ft-lb=12in-lb

              Since there are 12 inches in a foot, divide by 12.

              Examples:

              • 24 in-lb = 24 ÷ 12 = 2 ft-lb
              • 60 in-lb = 60 ÷ 12 = 5 ft-lb
              • 120 in-lb = 120 ÷ 12 = 10 ft-lb
              • 240 in-lb = 240 ÷ 12 = 20 ft-lb

               

              Joining AOMCI has priviledges 🙂

              #320741
              Ken Smith
              Participant

                Canada Member

                720 inch pounds divided by 12 is 60 Foot pounds which I believe is the correct torque.

                www.kenadianoutboards.com

                #320754
                JACQUES
                Participant

                  torque  chart

                  Joining AOMCI has priviledges 🙂

                  1 user thanked author for this post.
                  #320778
                  Bob Wight
                  Participant

                    US Member

                    720-780 in-lbs is the same as 60-65 ft-lbs.   You won’t find an in-lb torque wrench that will give you 720-780 in-lbs but you can easily find a ft-lb torque wrench that will give you 60-65 ft-lb torque.

                    Bob

                    1937 Champion D2C Deluxe Lite Twin
                    1954 Johnson CD-11
                    1955 Johnson QD-16
                    1957 Evinrude Fastwin 18
                    1957 Evinrude 3022
                    1958 Johnson QD-19
                    1958 Johnson FD-12
                    1959 Johnson QD-20
                    1982 Evinrude 25hp

                    “Every 20 minute job is only a broken bolt away from a 3-day project.”
                    "Every time you remove a broken or seized bolt an angel gets his wings."

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