Bubba's been to visit me! - NCRS Discussion Boards

Bubba's been to visit me!

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  • Martin N.
    Expired
    • July 30, 2007
    • 594

    Bubba's been to visit me!

    Pulling my starter down this morning off of my 1974 small block to do some number gathering, cleaning and inspection I noticed that I only had to disconnect 2 wires from the solenoid. Upon further examination of the loom coming down, some "Bubba" had cut the wire from the solenoid to the ignition coil and taped it (left the eyelet on the solenoid). It's been this way since I bought it in 2000 with no ramifications. What is the purpose of this circuit? THANKS....Marty
  • John H.
    Beyond Control Poster
    • December 1, 1997
    • 16513

    #2
    Re: Bubba's been to visit me!

    Marty -

    That's the bypass circuit that feeds a full 12 volts to the coil (+) terminal when the starter is cranking; during normal "run" operation, the coil (+) terminal is fed by a resistance wire from the ignition switch, and only sees 7-8 volts.

    Comment

    • John H.
      Beyond Control Poster
      • December 1, 1997
      • 16513

      #3
      Re: Bubba's been to visit me!

      Marty -

      That's the bypass circuit that feeds a full 12 volts to the coil (+) terminal when the starter is cranking; during normal "run" operation, the coil (+) terminal is fed by a resistance wire from the ignition switch, and only sees 7-8 volts.

      Comment

      • Dennis C.
        NCRS Past Judging Chairman
        • January 1, 1984
        • 2409

        #4
        I believe that wire is used to supply a full...

        ...12 volts to the coil when the ignition key is in the start position. Upon release, the coil is supplied with a diminished voltage through a ballast resistor or such like device. In theory, makes starting easier...

        Comment

        • Dennis C.
          NCRS Past Judging Chairman
          • January 1, 1984
          • 2409

          #5
          I believe that wire is used to supply a full...

          ...12 volts to the coil when the ignition key is in the start position. Upon release, the coil is supplied with a diminished voltage through a ballast resistor or such like device. In theory, makes starting easier...

          Comment

          • Martin N.
            Expired
            • July 30, 2007
            • 594

            #6
            Re: Bubba's been to visit me!

            John, Do you suggest repairing or leaving it alone. I can't understand why someone would terminate this circuit? I see no problems with rewiring and properly restoring this circuit, do you? Anything else I should trace back and check? THANKS....Marty

            Comment

            • Martin N.
              Expired
              • July 30, 2007
              • 594

              #7
              Re: Bubba's been to visit me!

              John, Do you suggest repairing or leaving it alone. I can't understand why someone would terminate this circuit? I see no problems with rewiring and properly restoring this circuit, do you? Anything else I should trace back and check? THANKS....Marty

              Comment

              • Mike M.
                NCRS Past President
                • May 31, 1974
                • 8365

                #8
                Re: Bubba's been to visit me!

                i'd repair the circuit , otherwise 12 volts to points at all times will shorten the lifespan of your ignition points. the shop manual should give a wiring diagram to help you restore the electric system. mike

                Comment

                • Mike M.
                  NCRS Past President
                  • May 31, 1974
                  • 8365

                  #9
                  Re: Bubba's been to visit me!

                  i'd repair the circuit , otherwise 12 volts to points at all times will shorten the lifespan of your ignition points. the shop manual should give a wiring diagram to help you restore the electric system. mike

                  Comment

                  • Clem Z.
                    Expired
                    • January 1, 2006
                    • 9427

                    #10
                    Re: Bubba's been to visit me!

                    most likely he had a after market ignition system on the car that did not need the resistor bypass wire.

                    Comment

                    • Clem Z.
                      Expired
                      • January 1, 2006
                      • 9427

                      #11
                      Re: Bubba's been to visit me!

                      most likely he had a after market ignition system on the car that did not need the resistor bypass wire.

                      Comment

                      • Dennis C.
                        NCRS Past Judging Chairman
                        • January 1, 1984
                        • 2409

                        #12
                        Hate to disagree, but I think some have it...

                        ...backwards. His cut wire modification deletes the 12 volt wire, so all the coil gets is the 7-8 volts during start - and that is all it gets on run. So, all that has been deleted is the 12 volt start function advantage.

                        Comment

                        • Dennis C.
                          NCRS Past Judging Chairman
                          • January 1, 1984
                          • 2409

                          #13
                          Hate to disagree, but I think some have it...

                          ...backwards. His cut wire modification deletes the 12 volt wire, so all the coil gets is the 7-8 volts during start - and that is all it gets on run. So, all that has been deleted is the 12 volt start function advantage.

                          Comment

                          • Mike M.
                            NCRS Past President
                            • May 31, 1974
                            • 8365

                            #14
                            Re: Hate to disagree, but I think some have it...

                            ya know what dipstick, i believe, no, i'm sure you are right on. now you can attack the bottle of jack. mikie

                            Comment

                            • Mike M.
                              NCRS Past President
                              • May 31, 1974
                              • 8365

                              #15
                              Re: Hate to disagree, but I think some have it...

                              ya know what dipstick, i believe, no, i'm sure you are right on. now you can attack the bottle of jack. mikie

                              Comment

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