C2 distributor basics - NCRS Discussion Boards

C2 distributor basics

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  • Steve D.
    Expired
    • February 1, 2002
    • 990

    C2 distributor basics

    Is it possible to rebuild a dual point tach drive distributor (1111895) with no vacuum advance, as a single point tach drive distributor with vacuum advance?

    Steve
  • William C.
    NCRS Past President
    • May 31, 1975
    • 6037

    #2
    Re: C2 distributor basics

    no, as the housing lacks the mounting features and slots in the outside to allow the vac advance to be mounted and to allow it to function. I believe the base may also be too high to allow the vac advance mechanism to fit.
    Bill Clupper #618

    Comment

    • Steve D.
      Expired
      • February 1, 2002
      • 990

      #3
      Re: C2 distributor basics

      Bill

      I read an article that said GM made 38 different mainshaft cams and 10 different weight base cams. So, in addition to the weights and springs, the cam geometries affect the advance curve also?

      Steve

      Comment

      • William C.
        NCRS Past President
        • May 31, 1975
        • 6037

        #4
        Re: C2 distributor basics

        I'm not sure what the terminology you are using refers to. the cam on the top of the mainshaft, the weight base, and the weight & spring combination all interact to "make" a curve. Some of the differences in the weight base are the location of the pins for the weights, affecting the leverage exerted, and the length of the slot the advance pin travels in, controlling the total centrifugal advance.
        Bill Clupper #618

        Comment

        • Steve D.
          Expired
          • February 1, 2002
          • 990

          #5
          Thanks *NM*

          Comment

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