What spark Plugs do you run?

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  • cryptid
    • Feb 2026

    #1

    What spark Plugs do you run?

    I bought a 1981 GS 750E about 2 weeks ago and I am going through the maintenance to be sure everything is good. In the owners manual, it specifies to use a NGK B8ES spark plug. The plugs that are in my bike are Champion RA6HC. I didn't like seeing that so I bought new plugs today, B8ES, and I am going to install them tonight with a .031 gap, per the owners manual. I am curious as to what other plugs are being run in stock bikes, and what kind of results others have had using different plugs. Thanks for sharing!
  • JEEPRUSTY

    #2
    Plain spirit of dead ancestor fearing NGK as specified in the manual.
    Fancy plugs are a scam like ***** enlargment pills.

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    • Nessism
      Forum LongTimer
      GSResource Superstar
      Past Site Supporter
      Super Site Supporter
      • Mar 2006
      • 35788
      • Torrance, CA

      #3
      16v engines take D8ES no?
      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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      • Flaming Chainsaws

        #4
        Originally posted by Nessism
        16v engines take D8ES no?
        My '82 1100E uses a D8ES spark plug.

        I just use an NGK spark plug, which is stock.

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        • cryptid

          #5
          My mistake...for some reason I had that B8ES in my head. It actually is a D8EA. Rookie mistake!

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          • Flaming Chainsaws

            #6
            Originally posted by cryptid
            My mistake...for some reason I had that B8ES in my head. It actually is a D8EA. Rookie mistake!
            Oh yeah. It's actually a D8EA for my bike too. Not D8ES .

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            • posplayr
              Forum LongTimer
              GSResource Superstar
              Past Site Supporter
              • Dec 2007
              • 23673
              • Tucson Az

              #7
              burns off high altitude soot

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              • Guest

                #8
                They put ngk in at the factory so I don't think you can go wrong with them. Alot of drag racers used autolite plugs back in the 90s don't remember the number but I think they worked good. I have always used ngk a haven't had a good reason to change

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                • Wyldesoul

                  #9
                  I run the iridium equivalent of the stock NGK plug in my 300. Runs very nice.

                  The... DR8EIX, if I recall. Not one of those annoying fancy "multispark" things, just a smaller electrode for a more controlled spark location, and a harder electrode for a longer life.


                  Edit: Ah yes. What posplayr linked. Very nice stuff, I'm quite happy with them.
                  Last edited by Guest; 07-25-2011, 09:23 PM.

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                  • BassCliff

                    #10
                    Hi,

                    I use flux capacitors.


                    Thank you for your indulgence,

                    BassCliff

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                    • Big T
                      Forum LongTimer
                      Past Site Supporter
                      Super Site Supporter
                      • Mar 2005
                      • 12392
                      • West Slope, OR

                      #11
                      Originally posted by cryptid
                      My mistake...for some reason I had that B8ES in my head. It actually is a D8EA. Rookie mistake!
                      The B8ES is used in the big 8 valve bikes

                      I've used NGK, ND, Champion and a few others over the years

                      Never noticed much difference
                      1978 GS 1000 (since new)
                      1979 GS 1000 (The Fridge, superbike replica project)
                      1978 GS 1000 (parts)
                      1981 GS 850 (anyone want a project?)
                      1981 GPZ 550 (backroad screamer)
                      1970 450 Mk IIID (THUMP!)
                      2007 DRz 400S
                      1999 ATK 490ES
                      1994 DR 350SES

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                      • Souske

                        #12
                        Originally posted by BassCliff
                        Hi,
                        I use flux capacitors.
                        Thank you for your indulgence,
                        BassCliff
                        I would like to use flux capacitors as well, however my bike was built 5 years before Back to the future. Is there a writeup somewhere on your site? Mcfly?

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                        • Guest

                          #13
                          I use NGK D9EA in my bike. It helps the engine run a little cooler.

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                          • posplayr
                            Forum LongTimer
                            GSResource Superstar
                            Past Site Supporter
                            • Dec 2007
                            • 23673
                            • Tucson Az

                            #14
                            Originally posted by chef1366
                            I use NGK D9EA in my bike. It helps the engine run a little cooler.
                            How can you tell?

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                            • Guest

                              #15
                              Originally posted by posplayr
                              How can you tell?
                              research research research
                              A little bird told me

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