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  • Well, that figures

    I have been trying to figure out a high RPM problem, among others. I keep thinking I have the Beast zeroed in, get her started, then she revs at 2k and attempts at getting that down or synching are for naught.

    As I tried different things to even her out and get her RPMs down, only to have her rev back up and be out of sych. I use the four-dial vacuum hose attachments to synch. I noticed that one of them went to zero when I turned the small air screw on the hose to control the needle vibration. It should just get stuck at whatever the vacuum level is, not go to zero. Closer inspection:

    The screw was cracked on the engine side, so that I introduced a vacuum leak, hence the high revs. Also, can you guess which carb it was on, screwing up any other settings? Number 3? You are a winner.

    The things I've done to this bike over a 27 cent part....
    "Time is the greatest teacher; unfortunately, it kills all of its students."

  • #2
    In truth, it was $2.37 at the local expensive pet store.
    "Time is the greatest teacher; unfortunately, it kills all of its students."

    Comment


    • #3
      Its always the simple things that cost us the most time and effort!
      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


      • #4
        Replaced that part and in two minutes I had gotten the RPMs down to about 700 (then set to 1100) and all four jugs pull the same vacuum. Amazing.

        Now the often-abused valve cover gasket leaks a ton, but I can do that. Can the road be far ahead? Probably.

        What's next? Exhaust mites? Gear-anoma? Pulling a Diver Ray on the rear drive?
        "Time is the greatest teacher; unfortunately, it kills all of its students."

        Comment


        • #5
          Can

          you imagine what you would have spent for a shop to run that problem down for you?
          mack
          79 XS 1100 SF Special
          HERMES
          original owner
          http://i946.photobucket.com/albums/a...ps6932d5df.jpg

          81 XS 1100 LH MNS
          SPICA
          http://i946.photobucket.com/albums/ad305/mack-055/2.jpg

          78 XS 11E
          IOTA
          https://youtu.be/wB5Jfbp6SUc
          https://youtu.be/RaI3WYHSuWA



          Have recovery trailer and shop if you breakdown in my area.
          Frankford, Ont, Canada
          613-398-6186

          Comment


          • #6
            Originally posted by LoHo View Post
            Replaced that part and in two minutes I had gotten the RPMs down to about 700 (then set to 1100) and all four jugs pull the same vacuum. Amazing.

            Now the often-abused valve cover gasket leaks a ton, but I can do that. Can the road be far ahead? Probably.

            What's next? Exhaust mites? Gear-anoma? Pulling a Diver Ray on the rear drive?
            Careful what you wish for

            Aint that a beautiful sound when they're all in sync ?

            Kudos to ya
            1980 XS1100G "Dolly G" Full Dresser (with a coat of many colors )
            1979 XS1100SF (stock-euro mods planned)
            1984 XV700L Virago (to be hot-modded)
            1983 XJ750MK Midnight Maxim (semi-restored DD)
            1977 XS650D ( patiently awaiting resto)

            Sometimes it takes a whole tank of gas before you can think straight.

            Comment


            • #7
              What's next? Exhaust mites? Gear-anoma? Pulling a Diver Ray on the rear drive?
              Hey, that was a TRANSMISSION, NOT a final drive that locked up!! Glad you got the problem fixed! maybe you will think about Half Moon Bay the end of April. Ed and I could use another XS to keep the HD crowd at bay. Rooms are not too much, and they do have camping nearby If you want to go that route.
              Ray Matteis
              KE6NHG
              XS1100 E '78 (winter project)
              XS1100 SF Bob Jones worked on it!

              Comment


              • #8
                I thought that might rattle your cage.

                I am considering Half Moon Bay, which is a great place to go in any event.
                "Time is the greatest teacher; unfortunately, it kills all of its students."

                Comment


                • #9
                  I just got a room with two beds for $162. Saturday night, two miles from the airport. Comfort Inn, Half Moon Bay with my choice number. The web site for the event lists a place with RV and camping, but I do NOT know what the price is.
                  Hope to see you, and ride together again!
                  Ray Matteis
                  KE6NHG
                  XS1100 E '78 (winter project)
                  XS1100 SF Bob Jones worked on it!

                  Comment


                  • #10
                    The saga took a new turn today. The new valve cover gasket showed up, was installed, and for the first time since November of 2010, F*****g B***h went under her own power to gas up and go for a spin around the neighborhood. Now to change non-op to registration, and off we'll go.

                    Thanks for the help, gentlemen. Most of my drama was self-imposed, but between grasping at straws and following up leads from y'all, I learned a lot, and am back in business.
                    "Time is the greatest teacher; unfortunately, it kills all of its students."

                    Comment


                    • #11
                      AWESOME!!!! I am very pleased to hear you got the B!T$% running!! I could feel your frustration, so it is good to know you got the pleasure of finally having a running bike again. Excellent dedication to the beast, and great work!!
                      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


                      • #12
                        Has anyone noticed a rhyme or reason for valve cover gasket thickness?The one I used for years was about an eighth thick and sealed well. The last one I bought was about as thin as a manilla envelope and delicate and seeped constantly. The one I just got was in between, but thick enough to compress and fill the gap.
                        "Time is the greatest teacher; unfortunately, it kills all of its students."

                        Comment


                        • #13
                          I have used RTV for valve covers since about 1980.
                          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


                          • #14
                            Years ago I bought 4 from a guy in NZ for $8(US)ea. Took a month on the slow boat but they were the thin ones as well.
                            I quit using them a few valve adjustment ago. Started using The Right Stuff. Never have had a leak yet.
                            Richard

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