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  • Spark Plug Caps?

    Do I have to use 5K plug caps or can I run no resistance caps? and if i can change to the no resistance caps would it make a difference?

    Thanks
    Nathan
    Nathan
    KD9ARL

    μολὼν λαβέ

    1978 XS1100E
    K&N Filter
    #45 pilot Jet, #137.5 Main Jet
    OEM Exhaust
    ATK Fork Brace
    LED Dash lights
    Ammeter, Oil Pressure, Oil Temp, and Volt Meters

    Green Monster Coils
    SS Brake Lines
    Vision 550 Auto Tensioner

    In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

    Theodore Roosevelt

  • #2
    You can use any resistance cap or non resistance type. The resistance type is for radio supression, it doesn't affect the operation of the coils. IMHO, less resistance is better.
    2H7 (79) owned since '89
    3H3 owned since '06

    "If it ain't broke, modify it"

    Comment


    • #3
      Thanks! that was easy enough!
      Nathan
      KD9ARL

      μολὼν λαβέ

      1978 XS1100E
      K&N Filter
      #45 pilot Jet, #137.5 Main Jet
      OEM Exhaust
      ATK Fork Brace
      LED Dash lights
      Ammeter, Oil Pressure, Oil Temp, and Volt Meters

      Green Monster Coils
      SS Brake Lines
      Vision 550 Auto Tensioner

      In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

      Theodore Roosevelt

      Comment


      • #4
        Originally posted by natemoen View Post
        Thanks! that was easy enough!
        The cage drivers will love you as you go by. Those of us old enough to remember radio interference will stick with resistance caps.
        Phil
        1981 XS1100 H Venturer ( Addie)
        1983 XJ 650 Maxim
        2004 Kawasaki Concours. ( Black Bear)

        Comment


        • #5
          Originally posted by MaximPhil View Post
          The cage drivers will love you as you go by. Those of us old enough to remember radio interference will stick with resistance caps.
          Phil
          Why, I dont have a radio on my bike, doesnt affect me....
          1980 SG. (Sold - waiting on replacement)
          2000 XJR1300. The Real modern XS11. Others are just pretenders.

          Woman (well, my wife anyway) are always on Transmit and never Receive.

          "A man should look for what is, and not for what he thinks should be" Albert Einstien.

          Comment


          • #6
            Originally posted by b.walker5 View Post
            Why, I dont have a radio on my bike, doesnt affect me....
            My thought exactly!
            Nathan
            KD9ARL

            μολὼν λαβέ

            1978 XS1100E
            K&N Filter
            #45 pilot Jet, #137.5 Main Jet
            OEM Exhaust
            ATK Fork Brace
            LED Dash lights
            Ammeter, Oil Pressure, Oil Temp, and Volt Meters

            Green Monster Coils
            SS Brake Lines
            Vision 550 Auto Tensioner

            In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

            Theodore Roosevelt

            Comment


            • #7
              Just in case...

              I've read that the radio interference from no-resistance caps can interfere with computer controlled ignition systems. If you find you've got problems, you can use spark plugs with resistors, and it's the same as having a resistor in your caps. I don't think that this is actually an issue for our vintage bikes... I think it's more of a concern with TCIs or fuel injector systems that use a real computer. May give you a nice edge when someone pulls up beside you his 200HP fuel injected supersport

              I've been looking for non-resistor caps to use with the Iridium plugs that I've bought that have resistors.
              '80 SG with motor from a '82 XJ

              Comment


              • #8
                I've been looking for non-resistor caps to use with the Iridium plugs that I've bought that have resistors.
                I run the non-resistor caps with the iridium plugs (only available w/resistor). I got them at a local autoparts store that handles NGK plugs. They had to order them special, but they got 'em. Mikes XS also lists the non-resistor caps, but I don't know if they're in stock.
                I think I have a loose screw behind the handlebars.

                '79 XS11 Standard, Jardine 4/1, Dyna DC1-1 Coils, 145 mains, 45 pilots, plastic floats - 25.7mm, XV920 fuel valves, inline fuel filters, speed bleeders, Mikes XS pods, spade-type fuse block, fork brace, progressive fork springs/shocks, manual petcocks, 750 FD, Venture cam chain tensioner, SS brake lines

                Comment


                • #9
                  Well, I went onto NGK's site and decided that I want Cap Part# LB05FP for cylinders 1 and 4, and Part# XB05FP for cylinders 2 and 3. The LB's are $1.90 each and the XB's are $4.40 each. Unfortunately, they want $15 to ship $10 worth of parts! I know I can get the LB's locally for under $2.00 but no one has the XB's on hand. I searched on ebay and found a guy that has 4 XB's, starting bid is 0.99 and his shipping is $15 ...WTF Seems like flat rate shiping would be chaper than that. I was thinking about budding on them anyways to see if I can get them for $16, which would be a fair price. Anyone have a chaper supplier for these caps? I figured I would check NGK first but it looks like I might be able to get them cheaper anywhere else at this rate.
                  '79 XS11 F
                  Stock except K&N

                  '79 XS11 SF
                  Stock, no title.

                  '84 Chevy K-10 "Big Blue"
                  GM 350, Muncie SM465, NP208, GM 10 Bolt with 3.42gears turnin 31x10.5 Baja Claws

                  "What they do have is an implacable, unrelenting presence and movement that bespeaks massive power lurking behind paint and chrome. They don't wail like a screeching ninja, the don't rumble like a harley. They just growl like a spactic, stressed out badger waiting to rip your face off and eat your soul." Trainzz~RIP~

                  Comment


                  • #10
                    Mikes XS has the 90 degree for $3.50 ea. You really don't need the long 45 degree caps - the 90's will work on all cylinders assuming you have enough high tension wire to reach.
                    I think I have a loose screw behind the handlebars.

                    '79 XS11 Standard, Jardine 4/1, Dyna DC1-1 Coils, 145 mains, 45 pilots, plastic floats - 25.7mm, XV920 fuel valves, inline fuel filters, speed bleeders, Mikes XS pods, spade-type fuse block, fork brace, progressive fork springs/shocks, manual petcocks, 750 FD, Venture cam chain tensioner, SS brake lines

                    Comment


                    • #11
                      Originally posted by dbeardslee View Post
                      Mikes XS has the 90 degree for $3.50 ea. You really don't need the long 45 degree caps - the 90's will work on all cylinders assuming you have enough high tension wire to reach.
                      I want the long caps b/c I plan on cutting off the ends of the wires and I dont thing I will have enough left to use the short 90's... Im going to check to see how much the local shop can get them for before buying online. Thanks though.
                      '79 XS11 F
                      Stock except K&N

                      '79 XS11 SF
                      Stock, no title.

                      '84 Chevy K-10 "Big Blue"
                      GM 350, Muncie SM465, NP208, GM 10 Bolt with 3.42gears turnin 31x10.5 Baja Claws

                      "What they do have is an implacable, unrelenting presence and movement that bespeaks massive power lurking behind paint and chrome. They don't wail like a screeching ninja, the don't rumble like a harley. They just growl like a spactic, stressed out badger waiting to rip your face off and eat your soul." Trainzz~RIP~

                      Comment


                      • #12
                        Well for now I stuck with the old caps (which were pretty much new anyways) and they are 5K ohms so I wont interfere with your radio for the time being!
                        Nathan
                        KD9ARL

                        μολὼν λαβέ

                        1978 XS1100E
                        K&N Filter
                        #45 pilot Jet, #137.5 Main Jet
                        OEM Exhaust
                        ATK Fork Brace
                        LED Dash lights
                        Ammeter, Oil Pressure, Oil Temp, and Volt Meters

                        Green Monster Coils
                        SS Brake Lines
                        Vision 550 Auto Tensioner

                        In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.

                        Theodore Roosevelt

                        Comment


                        • #13
                          Originally posted by b.walker5 View Post
                          Why, I dont have a radio on my bike, doesnt affect me....
                          They will if you are talking on your cell phone!!!!

                          Sunday, I saw a guy on a dual sport riding through town with his cell phone in his left hand yaking away, and his right hand was a lit cigarette. At least he was ATGATT, with his baseball cap turned backward and his khaki shorts and sandals, and of course the ultimate protection of a cutoff T-shirt.
                          Ich habe dich nicht gefragt.

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