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Ignition Coils for GS425

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    Ignition Coils for GS425

    One of the ignition coils on a 1979 GS425 I picked up seems to be shot, it's partially melted and reads OL on the multimeter.

    After looking around in the forum it seems like folks prefer Dynatek coils as replacements (link attached).

    Before I pull the trigger on them, I thought I’d ask:
    • What Ohm coils do I need, 3 or 5?
    • Should I replace the other while Im at it?
    • If so, I imagine I’d need two single tower coils, not one dual tower to replace both?
    Dynatek coils are high-quality performance products designed to provide spark voltages in excess of 30,000V volts and spark energies.

    #2
    4-5 ohm for points ignition. 3 ohm is for GS bikes with electronic ignition
    Ed

    To measure is to know.

    Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

    Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

    Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

    KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

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      #3
      In my experience with coils, I prefer the 4.3 ohm coils for electronic ignition due to the sub-par charging systems on the earlier models of GS engines.
      I ran into a low voltage issue after installing the new ignition and tried everything.

      In my case, I run the Katana style coils.
      Current:
      1993 ZX11 - 2nd build in progress
      1977 GS750 (710 is getting closer)
      1998 Kawasaki Voyager - selling
      1998 Chevy C2500
      1999 Rav4

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