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  • #1

    Wow!!!

    WOW!!! is all I got to say. As some may know I have rebuilt my carbs 5 time and tuned and tuned and tuned Still had poping through exaust, better, but still there So, I replaced the OEM fuse box and removed 10 PO splices, went for my 1st test ride today, WOW, all this time the gremlins I "thought" were in the carbs, were in the elec system Absoluty NO poping, "0" Nadaa Runs like a new bike No drop in idle speed at long lights No sputter at take off To anyone with the OEM fuseBox GET RID OF IT!!!
    1979 XS1100 Special (Mad Max, OEM) Current
    1980 XS1100 Special
    1990 V Max
    1982 KZ750 LTD Twin
    1986 700 FZR Yamaha Fazer (faster then expected)
    1979 XS750 Special (my 1st Special)
    1974 CB750-Four



    Past/pres Car's
    1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8
    Tags: None
  • #2
    Glad to hear it's performing good for you!......Rule of thumb is diagnosing electrical, primary or secondary ignition BEFORE condemming fuel system. Kinda old school, but so are these scoots and applies in the pre mid eighties automotive world also.
    81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.

    Comment

    • #3
      Thanks

      Who-da thought, wireing that is only 32 years old and was the weakest link when it was new and had been "FIXED" by the PO Don't know why I didn't fix it the 3rd time I blamed the carbs Oh well, I am a pro at R/I carbs now
      Originally posted by motoman View Post
      Glad to hear it's performing good for you!......Rule of thumb is diagnosing electrical, primary or secondary ignition BEFORE condemming fuel system. Kinda old school, but so are these scoots and applies in the pre mid eighties automotive world also.
      1979 XS1100 Special (Mad Max, OEM) Current
      1980 XS1100 Special
      1990 V Max
      1982 KZ750 LTD Twin
      1986 700 FZR Yamaha Fazer (faster then expected)
      1979 XS750 Special (my 1st Special)
      1974 CB750-Four



      Past/pres Car's
      1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

      Comment

      • #4
        Nice, now your spark plugs probably won't foul anymore since the coils are now getting their proper voltage.
        2H7 (79)
        3H3

        "If it ain't broke, modify it"

        ☮

        Comment

        • #5
          I have learned that this is the first thing I do to any XS11 I work on. In the time I have been reading this board, I have seen A BUNCH of what was believed to be fuel and or coil problems fixed by replacing the fuse block, followed closely, if not tied with, repairing the pick-up coil wires.
          Life is what happens while your planning everything else!

          When your work speaks for itself, don't interrupt.

          81 XS1100 Special - Humpty Dumpty
          80 XS1100 Special - Project Resurrection


          Previously owned
          93 GSX600F
          80 XS1100 Special - Ruby
          81 XS1100 Special
          81 CB750 C
          80 CB750 C
          78 XS750

          Comment

          • #6
            Originally posted by XS1100_OEM4ME View Post
            WOW!!! is all I got to say. As some may know I have rebuilt my carbs 5 time and tuned and tuned and tuned Still had poping through exaust, better, but still there So, I replaced the OEM fuse box and removed 10 PO splices, went for my 1st test ride today, WOW, all this time the gremlins I "thought" were in the carbs, were in the elec system Absoluty NO poping, "0" Nadaa Runs like a new bike No drop in idle speed at long lights No sputter at take off To anyone with the OEM fuseBox GET RID OF IT!!!
            See... I don't have any of those problems. But now I think I have to get a new fuse block. Everyones doing it.....
            Don
            1979 XS1100SF "Old Man" bought by my Dad brand new in 79, customized in 80 with Vetter, Standard tank, and touring seat. I inherited in 02 when Dad passed. Been riding it since 09. No resto, bike is a survivor...

            2007 RoadStar 1700 Midnight Silverado "The Black Pearl" Cobra Slash-downs, K&N filter. More mods to come


            old:
            1989 kawi ex500
            1996 yzf-r6
            1999 yzf-r1
            2001 kawi zx-6r
            2000 Ducati 748
            2002 YZF-R1
            2005 V-Star 1100 Classic

            Comment

            • #7
              I fought "carb &backfire issues" for a year. Turned out to be the pick up wire problem.
              "If A equals success, then the formula is: A = X + Y + Z. X is work. Y is play. Z is keep your mouth shut." - Albert Einstein

              "Illegitimi non carborundum"-Joseph W. "Vinegar Joe" Stilwell



              1980 LG
              1981 LH

              Comment

              • #8
                Well golly

                Well like Gomer Pyle said Golly " I have seen A BUNCH of what was believed to be fuel and or coil problems fixed by replacing the fuse block, followed closely, if not tied with, repairing the pick-up coil wires" Gee, Sgt. Carter's Golly, I am just a Gomer trying to help Golly, you fellers are smart
                Last edited by XS1100_OEM4ME; 01-20-2012, 11:27 PM.
                1979 XS1100 Special (Mad Max, OEM) Current
                1980 XS1100 Special
                1990 V Max
                1982 KZ750 LTD Twin
                1986 700 FZR Yamaha Fazer (faster then expected)
                1979 XS750 Special (my 1st Special)
                1974 CB750-Four



                Past/pres Car's
                1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

                Comment

                • #9
                  happpy for you and me

                  I am happy you finally fixed it and so happy I am an original owner. No Splices no dices no bent carb parts. At least when I deal with a problem its not a barn yard modification. Still I am glad for you.
                  To fix the problem one should not make more assumptions than the minimum needed.

                  Rodan
                  https://www.youtube.com/watch?v=khm6...liHntN91DHjHiS
                  1980 G Silverbird
                  Original Yamaha Fairfing and Bags
                  1198 Overbore kit
                  Grizzly 660 ACCT
                  Barnett Clutch Springs
                  R1 Clutch Fiber Plates
                  122.5 Main Jets
                  ACCT Mod
                  Mac 4-2 Flare Tips
                  Antivibe Bar ends
                  Rear trunk add-on
                  http://s1184.photobucket.com/albums/z329/viperron1/

                  Comment

                  • #10
                    !!!!!!!!!!!!!!!!!!!!! I was really feeling bad for you not finding the problem.. You sound like you are officially a carb expert now though. Good job!

                    Comment

                    • #11
                      wiring

                      Yeah I found that my main ground wire from battery to frame was nearly broken completely loose so it may explain my power issues. And likely it would cause the low power to coil problem as a bad ground is almost worse than anything else cause if the positive wont get through it's an easier track to follow but a bad common ground loop can cause issues anywhere.
                      Even a blind monkey gets the odd banana.

                      1979 XS 1100 special (been down the PO trail and it was messy)

                      Comment

                      • #12
                        Carbs

                        Originally posted by XS1100_OEM4ME View Post
                        Who-da thought, wireing that is only 32 years old and was the weakest link when it was new and had been "FIXED" by the PO Don't know why I didn't fix it the 3rd time I blamed the carbs Oh well, I am a pro at R/I carbs now
                        Now that you're a carb expert, I've got a couple sets to send , to keep you in practice!
                        Tom Clisham

                        Age is relative YOU WON"T GET OLD TIL YOU SELL THE BIKE
                        _____________________________________________

                        '78xs1100E ,all stock & original GONE TO WISCONSIN

                        '80 SG Vetter fairing,hard bags,trunk,fork brace,
                        stock headers with fishtail mufflers,black & beautiful GONE TO ARIZONA

                        79SF lowered,jardine 4/2 exhaust,pod filters,drilled rotors,fork brace, bar hopper

                        79SF 1 owner,8000 miles, restoring to completely original ( I hope) GONE TO FRANCE

                        Comment

                        • #13
                          Carbs

                          Great to have all that weight off your back, I also know what it feels like. My father, years ago, said that 99% of carb problems can be found in the ignition. Sometimes my brain over rides this wisdom and I too have chased those elusive gremlins about only to drive my palm into my forehead, again. Ride and enjoy the freedom!
                          1979 XS 1100 Special - Nicknamed "MONSTER"

                          ATC fuse box
                          Braded stainless brake lines
                          4/2 aftermarket exhaust(temp until stock is re-chromed )
                          V-Max auto cam chain adjuster
                          Brake light modulator with reserve brake light bypass
                          Vetter Windjammer III faring
                          Tkat Fork Brace

                          "Americans have the right and advantage of being armed; unlike the citizens of the countries whose governments are afraid to trust the people with arms”
                          James Madison, The Federalists Papers

                          Comment

                          • #14
                            Thanks

                            Thanks, I feel kinda stupid for not doing it 4 carb rebuilds ago. 10 bucks! and worth a thousand!

                            Originally posted by je2wheeler View Post
                            Great to have all that weight off your back, I also know what it feels like. My father, years ago, said that 99% of carb problems can be found in the ignition. Sometimes my brain over rides this wisdom and I too have chased those elusive gremlins about only to drive my palm into my forehead, again. Ride and enjoy the freedom!
                            Last edited by XS1100_OEM4ME; 01-21-2012, 07:20 PM.
                            1979 XS1100 Special (Mad Max, OEM) Current
                            1980 XS1100 Special
                            1990 V Max
                            1982 KZ750 LTD Twin
                            1986 700 FZR Yamaha Fazer (faster then expected)
                            1979 XS750 Special (my 1st Special)
                            1974 CB750-Four



                            Past/pres Car's
                            1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

                            Comment

                            • #15
                              10 bucks!

                              hey Dragon, its 10 bucks, the best 10 bucks I have ever spent I know your bike runs good and you know the history, but these fuse boxes were just OK when new, and everything wears out, trust me on this one and I will bet you will notice "Some" improvements
                              Originally posted by ddragon63 View Post
                              See... I don't have any of those problems. But now I think I have to get a new fuse block. Everyones doing it.....
                              1979 XS1100 Special (Mad Max, OEM) Current
                              1980 XS1100 Special
                              1990 V Max
                              1982 KZ750 LTD Twin
                              1986 700 FZR Yamaha Fazer (faster then expected)
                              1979 XS750 Special (my 1st Special)
                              1974 CB750-Four



                              Past/pres Car's
                              1961 Catalina 389/1970 Torino GT 351/1967GTO 12to1 comp./ Roller cam/ T-10/ 456 gear/Tri-power/1967 GTO 400, 1969 Camaro, 1968 Z28, 2001 BMW M Roadster 0 to 60 in 4.5 sec. Jaguar XK8

                              Comment

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