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Spark plugs with resistors for these GS series bikes?

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    Spark plugs with resistors for these GS series bikes?

    Do the spark plugs for these old bikes require the spark plugs with resistors?
    Last edited by Kentman7; 06-02-2024, 01:00 PM.

    #2
    I’m having the same exact problems that are stated in this video for having non resistor spark plugs.

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      #3
      I don't think resistors are ever "required", just recommended. I don't think "GS's" even recommended them. My "91" GSX 1100 G does recommend them.
      1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

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        #4
        Pretty good application chart at Bikecliff

        General Suzuki Specs (bwringer.com)
        82 1100 EZ (red)

        "You co-opting words of KV only thickens the scent of your BS. A thief and a putter-on of airs most foul. " JEEPRUSTY

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          #5
          Resistor plugs are not required, but the presence of a 5K resistor is. That 5K resistor can be in the plug or plug cap, but preferably not both.
          ---- Dave

          Only a dog knows why a motorcyclist sticks his head out of a car window

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            #6
            This non mechanic wonders what would happen if there were no resisters anywhere? I've always heard they only keep static off radios.
            1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

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              #7
              GS bikes have a 5k resistor inside the spark plug cap. For this reason, resistor spark plugs should not be used.

              NGK seems to be discontinuing non resistor plugs, but there is always ND, which are similar quality. Or, the plug cap can be taken apart, and the resistor element removed. You have to fashion a copper spacer in place of the resistor, though. I've never done it, but it seems easy enough.
              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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                #8
                I don't run any resistor. I have after market electronic ignition, 4.3ohm coils, 90 degree boots and stock plugs gapped at .030 - no issues with this set up. Pulls hard into triple digit speeds.

                I've run several other set ups without resistors and no issues as well.

                Both 77 GS750 and 78 GS 1000.

                However, if you see a sign that says turn off 2-way radios, you might want to turn around as you might upset someone LOL
                Resistors were used to prevent erratic electronic signals - aka radio noise, ant races, fuzzy stuff.
                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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