Announcement

Collapse
No announcement yet.

Iridium plugs and 5 ohm caps

Collapse
X
 
  • Filter
  • Time
  • Show
Clear All
new posts

  • Iridium plugs and 5 ohm caps

    I was reading through another thread and saw that Iridium plugs have built-in resistance an one doesn't need the resistance plug caps...is that right? What is the result of having all of that resistance?
    "Time is the greatest teacher; unfortunately, it kills all of its students."

  • #2
    I always use iridium plugs and always remove the resistors in the caps. My own view of it is why impede current actually reaching the plugs? I want as much current hitting the plug as possible, so that the spark is better. Doubling up on resistors is pointless.....
    XS1100F 1980 European model. Standard. Dyna coils. Iridium plugs. XS750 final drive (sometimes). Micron fork brace. Progressive front springs. Geezer regulator/rectifier. Stainless 4 into 2 exhaust. Auto CCT (Venturer 1300) SOLD. New project now on the go. 1980 European model.

    Comment


    • #3
      LoHo- I read some great threads on here with regard to the very question u asked. I ended-up going to Home Depot and bought a foot of 8 gauge wire and cut it to size.
      1979 XS1100F
      2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

      Comment


      • #4
        Well I certainly am not an electrical giant so I am not sure of the reason for resistors ahead of (or in) the plugs. Is it to keep your neighbor's TV from blinking when you start up? I don't know. But once I got rid of the stock coils with the iffy wires and opted for aftermarket Dyna coils, I have been using ACCEL 8.8mm stainless wires with great success. With non-restrictor type plugs, all secondary voltage goes straight to the plugs. Plus they are yellow which gives a little splash of color on top of the motor.

        Now that I think of it, look at the 2nd bike from the right above....that's mine and you can see them.
        Mike Giroir
        79 XS-1100 Special

        Once you un-can a can of worms, the only way to re-can them is with a bigger can.

        Comment


        • #5
          Originally posted by TADracer View Post
          Well I certainly am not an electrical giant so I am not sure of the reason for resistors ahead of (or in) the plugs. Is it to keep your neighbor's TV from blinking when you start up? I don't know. But once I got rid of the stock coils with the iffy wires and opted for aftermarket Dyna coils, I have been using ACCEL 8.8mm stainless wires with great success. With non-restrictor type plugs, all secondary voltage goes straight to the plugs. Plus they are yellow which gives a little splash of color on top of the motor.

          Now that I think of it, look at the 2nd bike from the right above....that's mine and you can see them.
          The resistors are to to suppress radio frequency interference.

          It is actually possible to get fined if you knowingly produce radio frequency interference. If you had a neighbor around you that was a amateur radio operator and you were running your bike for whatever reason and they experienced disruptions and asked you to fix the problem, you actually do have to fix it. If you don't they could file a complaint with the FCC and on and on.
          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


          • #6
            I run the Irridium plugs, which have the resistor built into them. I have noticed though, I have trouble with my keychain garage door opener while my bike is running. Some days, I have to kill the engine in the driveway to open the door.
            1980 XS850SG - Sold
            1981 XS1100LH Midnight Special (Sold) - purchased 9/29/08
            Fully Vetterized and Dynojet Kit added, Heated Grips, Truck-Lite LED headlight, Accel Coils, Irridium plugs, TKAT Fork Brace, XS850LH Final Drive & Black SS Brake lines from Chacal.
            Here's my web page devoted to my bike! XS/XJ User's Manuals there, and the XJ1100 Service Manual and both XS1100 Service manuals (free download!).

            Whether you think you can, or you think you cannot - You're right.
            -H. Ford

            Comment


            • #7
              Originally posted by natemoen View Post
              The resistors are to to suppress radio frequency interference.

              It is actually possible to get fined if you knowingly produce radio frequency interference. If you had a neighbor around you that was a amateur radio operator and you were running your bike for whatever reason and they experienced disruptions and asked you to fix the problem, you actually do have to fix it. If you don't they could file a complaint with the FCC and on and on.
              Makes sense....but I live in new Orleans! There are only maybe three guys that know what an amateur radio is. We would probably just settle it with some crawfish and beer.
              Mike Giroir
              79 XS-1100 Special

              Once you un-can a can of worms, the only way to re-can them is with a bigger can.

              Comment


              • #8
                but I live in new Orleans! There are only maybe three guys that know what an amateur radio is. We would probably just settle it with some crawfish and beer.
                Yeah, but get someone like me visiting and trying to use a radio and you MAY get a visit from the feds! But then, the noise from a non resister engine will kill the AM radio signal, and most of us HAM's really don't care!
                The resistors in the plugs will keep the noise down, and solid wires will keep the bike running well.
                Ray Matteis
                KE6NHG
                XS1100 E '78 (winter project)
                XS1100 SF Bob Jones worked on it!

                Comment


                • #9
                  So, to sum up, if I run the Iridium plugs with non-resistor plug caps, I'm still golden?
                  "Time is the greatest teacher; unfortunately, it kills all of its students."

                  Comment


                  • #10
                    That's what has been on the '79 for about 20K miles....
                    Ray Matteis
                    KE6NHG
                    XS1100 E '78 (winter project)
                    XS1100 SF Bob Jones worked on it!

                    Comment


                    • #11
                      Originally posted by LoHo View Post
                      So, to sum up, if I run the Iridium plugs with non-resistor plug caps, I'm still golden?
                      Ur not "still" golden, you're golden. Irridium plugs already have resistors, so running irridium plugs with resistor caps is redundant, and not well to do.
                      1979 XS1100F
                      2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

                      Comment

                      Working...
                      X