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Which dyna s i need? Gs550

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    Which dyna s i need? Gs550

    Hi here is my gs550. I want to put dyna s but i don't know whick one ds3-1 or ds3-2
    Attached Files
    Gs550

    #2
    And here my gs550 Screenshot_20211021_190625.jpg
    Gs550

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      #3
      Ive spent a lot of time trying to understand same thing. Been in contact with Dynatek and givent them photos and measurements and the outcome is they cannot be 100% unless ND is stamped on the advance rotor. The differences are around the height of the points cam, mine 'looks' the same as your pic and they have made a highly educated guess the ds3-1 is the one based on measuring the depth of the cam. Heres the email I got from them -

      On the height of the points cam lobe, which you show as 27.95 MM. or 1.100", the DS3-1 rotor height measures at 1.095" so I might suspect that the DS3-1 kit is the best option.
      The DS3-2 rotor is taller than the points cam lobe by .030" and I must suspect will not fit.
      Remember, this is till somewhat speculative, but I believe the DS3-1 would be the ignition to use.

      hope it helps



      1982 GS550Ez, 1980 Yam RD350LC 4L0, 1980 Yam DT175,
      1977 Yam RD250D(Sold)
      London UK

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