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  • Spark plug gap

    Hi what gap is preferred for the 78E Ngk plugs bpr6es Thank You!!
    XS11E 1978

    Past Bikes that I owned
    H1 Kawasaki 500 1972
    CB 750K Honda 1978
    CB 750K Honda 1979
    Triumph 500 Daytona 1968
    Triumph 650 Bonny 1969

  • #2
    FOUND IT .028-.032 Thx
    XS11E 1978

    Past Bikes that I owned
    H1 Kawasaki 500 1972
    CB 750K Honda 1978
    CB 750K Honda 1979
    Triumph 500 Daytona 1968
    Triumph 650 Bonny 1969

    Comment


    • #3
      bpr6es
      The correct plug is a bp6es, no "R"! If you run the "R" plugs, you should pull the resistor from the plug caps. The "R" is to keep radio interference down, but it will reduce the spark energy.
      Ray Matteis
      KE6NHG
      XS1100 E '78 (winter project)
      XS1100 SF Bob Jones worked on it!

      Comment


      • #4
        Originally posted by DiverRay View Post
        The correct plug is a bp6es, no "R"! If you run the "R" plugs, you should pull the resistor from the plug caps. The "R" is to keep radio interference down, but it will reduce the spark energy.
        Hey Driver Ray, where do you buy the bp6es? I tried amazon, cdn tire, napa, I'm only finding the BPR ones. They say it's interchangeable with BP6es. How do you 'pull the resistor from the plug caps'? Does it come off the spark plug or off the NG elbow connector thing?

        My bike wouldn't start for 6 months (ok 4 months were winter) and it's because i had wrong plugs and corrosion in the elbow plug and copper wire. I cleaned that up, put in 4 new bpr6es plugs, and the bike started right up
        Frame: 79 XS1100S
        Engine: 81 XS1100S
        Carbs: 78-79 BS34

        Gf bike: 78 XS650S
        Carbs: 70-79 BS38

        Pics: http://tinypic.com/2mpmkpjb

        Comment


        • #5
          BP6ES is no longer available in the US my bet is that Canada isn't any different. Google "remove resistor from ngk spark plug cap" for instructions on how to do that, it's pretty simple.
          1980 XS1100G

          I identify as a man but according to the label on a package of Stauffers Baked Lasagne I'm actually a family of four!

          Comment


          • #6
            Yambits : for Yamaha bikes You can also just buy some non resistor replacement spark plug caps.
            2 - 80 LGs bought one new
            81 LH
            02 FXSTB Nighttrain
            22 FLTRK Road Glide Limited
            Jim

            Comment


            • #7
              Originally posted by LAB3 View Post
              BP6ES is no longer available in the US my bet is that Canada isn't any different. Google "remove resistor from ngk spark plug cap" for instructions on how to do that, it's pretty simple.
              Been my experience that you can not remove the resistor from the oem caps. At least I have not been able to without destroying the cap.
              2 - 80 LGs bought one new
              81 LH
              02 FXSTB Nighttrain
              22 FLTRK Road Glide Limited
              Jim

              Comment


              • #8
                One other thing that I thought might be mentioned. Beware of buying plugs off of Ebay. There are many listed as BP6ES and they are mostly counterfeit. ngk bp6es spark plug for sale | eBay
                Last edited by cajun31; 03-29-2024, 02:15 PM.
                2 - 80 LGs bought one new
                81 LH
                02 FXSTB Nighttrain
                22 FLTRK Road Glide Limited
                Jim

                Comment


                • #9
                  Originally posted by cajun31 View Post

                  Been my experience that you can not remove the resistor from the oem caps. At least I have not been able to without destroying the cap.
                  I replaced mine. The Honda CB750 coils tat I bought had two caps with elbows for 1&4 and straight caps for 2&3. The elbows came right apart, the straight ones where a different story so I used two of my previous replacements for those.
                  1980 XS1100G

                  I identify as a man but according to the label on a package of Stauffers Baked Lasagne I'm actually a family of four!

                  Comment


                  • #10
                    Originally posted by cajun31 View Post
                    One other thing that I thought might be mentioned. Beware of buying plugs off of Ebay. There are many listed as BP6ES and they are mostly conterfeit. ngk bp6es spark plug for sale | eBay
                    Any way to know which ones are counterfeit?
                    -Mike
                    _________
                    '79 XS1100SF 20k miles
                    '80 XS1100SG 44k miles
                    '81 XS1100H Venturer 35k miles
                    '79 XS750SF 17k miles
                    '85 Honda V65 Magna ~7k miles
                    '84 Honda V65 Magna 48k miles (parts bike)
                    '86 Yamaha VMAX 9k miles

                    Previous: '68 Motoguzzi 600cc + '79 XS750SF 22k miles +'84 Honda V65

                    Comment


                    • #11
                      Originally posted by Radioguylogs View Post

                      Any way to know which ones are counterfeit?
                      the address on the box,
                      the labels on the plugs,
                      and date of manufacture on the plug


                      https://youtu.be/vpH4O14EBxA?si=-Q0YQyLq0JwGoa8Z
                      Frame: 79 XS1100S
                      Engine: 81 XS1100S
                      Carbs: 78-79 BS34

                      Gf bike: 78 XS650S
                      Carbs: 70-79 BS38

                      Pics: http://tinypic.com/2mpmkpjb

                      Comment


                      • #12
                        Very helpful Blank Slate!
                        -Mike
                        _________
                        '79 XS1100SF 20k miles
                        '80 XS1100SG 44k miles
                        '81 XS1100H Venturer 35k miles
                        '79 XS750SF 17k miles
                        '85 Honda V65 Magna ~7k miles
                        '84 Honda V65 Magna 48k miles (parts bike)
                        '86 Yamaha VMAX 9k miles

                        Previous: '68 Motoguzzi 600cc + '79 XS750SF 22k miles +'84 Honda V65

                        Comment


                        • #13
                          Yes, this fake crap is scary.

                          Comment


                          • #14
                            Originally posted by LAB3 View Post
                            BP6ES is no longer available in the US my bet is that Canada isn't any different. Google "remove resistor from ngk spark plug cap" for instructions on how to do that, it's pretty simple.
                            Napa still lists them on their site. Might have to order direct from them.
                            1980 XS1100 SG
                            Inline fuel filters
                            New wires in old coils-outer spark plugs
                            160 mph speedometer mod
                            Kerker Exhaust
                            xschop K & N air filter setup
                            Dynojet Recalibration kit
                            1999 Kawasaki ZRX1100
                            1997 Jeep Cherokee 4.5"lift installed

                            Comment


                            • #15
                              I have a Napa about 2 miles from my house. I get my oil, plugs, and other small "universal" parts from them.
                              Ray Matteis
                              KE6NHG
                              XS1100 E '78 (winter project)
                              XS1100 SF Bob Jones worked on it!

                              Comment

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