Initial valve adjustment

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  • trbig
    Simply used to just post A LOT!
    • Nov 2005
    • 7838
    • Ada, Oklahoma

    #1

    Initial valve adjustment

    Is there a trick or method to shimming the valves from scratch? I was going to just put the head on a bench and adjust one side at a time. I remember TC's trouble with trying to occupy the same space with 2 valves at a time, so I was just going to torque each cam down one at a time with some random shims and go from there when I get this head back??


    Tod
    Try your hardest to be the kind of person your dog thinks you are.

    You can live to be 100, as long as you give up everything that would make you want to live to be 100!

    Current bikes:
    '06 Suzuki DR650
    *'82 XJ1100 with the 1179 kit. "Mad Maxim"
    '82 XJ1100 Completely stock fixer-upper
    '82 XJ1100 Bagger fixer-upper
    '82 XJ1100 Motor/frame and lots of boxes of parts
    '82 XJ1100 Parts bike
    '81 XS1100 Special
    '81 YZ250
    '80 XS850 Special
    '80 XR100
    *Crashed/Totalled, still own
  • prometheus578
    XS-XJ Super Guru (RESIGNED)
    • Aug 2004
    • 4012
    • Olympia , Wa.

    #2
    Should have no problem doing only one cam at a time.. T.C.'s misstep was having both cams in and then rotating one, who's valves hit the valves held open by the other cam.
    I can't recall just how far the valves extend into/or past the dome area.... you may want to have the head propped up offa the bench a little so the valves don't strike the bench.
    "Damn it Jim, I'm a doctor, not a mechanic!' ('Bones' McCoy)

    Comment

    • trbig
      Simply used to just post A LOT!
      • Nov 2005
      • 7838
      • Ada, Oklahoma

      #3
      Thanks Pro.

      I had planned on doing that. I was just hoping there was something more precise than a stab in the dark on the shim sizes needed. Thanks though.


      Tod
      Try your hardest to be the kind of person your dog thinks you are.

      You can live to be 100, as long as you give up everything that would make you want to live to be 100!

      Current bikes:
      '06 Suzuki DR650
      *'82 XJ1100 with the 1179 kit. "Mad Maxim"
      '82 XJ1100 Completely stock fixer-upper
      '82 XJ1100 Bagger fixer-upper
      '82 XJ1100 Motor/frame and lots of boxes of parts
      '82 XJ1100 Parts bike
      '81 XS1100 Special
      '81 YZ250
      '80 XS850 Special
      '80 XR100
      *Crashed/Totalled, still own

      Comment

      • 81xsproject
        XS-XJ Super Guru
        • Nov 2004
        • 3185
        • Fortuna, CA

        #4
        My only advise would be to start with all fairly thin shims. If they are too thick and work out to have 0mm clearance, you dont get any info to tell the right size other than that the one in there is too big. I have a bunch of 245, 250, and 255's if you want to borrow them and can afford to wait.
        '81 XS1100 SH

        Melted to the ground during The Valley Fire

        Sep. 12th 2015

        RIP

        Comment

        • Crazcnuk
          XS-XJ Guru
          • Aug 2006
          • 2980
          • Hinton, AB, Canada

          #5
          it's not really a stab in the dark. You put any old shims in, torque down the cam and use your feeler guages.

          The chart will tell you what you need, regardless of where you start.
          Nice day, if it doesn't rain...

          '05 ST1300
          '83 502/502 Monte Carlo for sale/trade

          Comment

          • 81xsproject
            XS-XJ Super Guru
            • Nov 2004
            • 3185
            • Fortuna, CA

            #6
            Yeah, the little spread sheet thing we made ROCKS for figuring it out.
            '81 XS1100 SH

            Melted to the ground during The Valley Fire

            Sep. 12th 2015

            RIP

            Comment

            • prometheus578
              XS-XJ Super Guru (RESIGNED)
              • Aug 2004
              • 4012
              • Olympia , Wa.

              #7
              New moderator is correct. Start with the smallest you have.
              "Damn it Jim, I'm a doctor, not a mechanic!' ('Bones' McCoy)

              Comment

              • Crazcnuk
                XS-XJ Guru
                • Aug 2006
                • 2980
                • Hinton, AB, Canada

                #8
                heh, never hurts, but I assume you only have the set that came out in the first place, like most of us.

                I now have 2 sets, but I didn't when I was setting my valves the first time.
                Nice day, if it doesn't rain...

                '05 ST1300
                '83 502/502 Monte Carlo for sale/trade

                Comment

                • trbig
                  Simply used to just post A LOT!
                  • Nov 2005
                  • 7838
                  • Ada, Oklahoma

                  #9
                  Good thinking.

                  As for shims... between the several that I have bought and three motors, I have a decent selection. Thank you for the offer though. I think the way he's doing these valves, they are going to sit considerably deeper anyway and be a thin shim.


                  Tod
                  Try your hardest to be the kind of person your dog thinks you are.

                  You can live to be 100, as long as you give up everything that would make you want to live to be 100!

                  Current bikes:
                  '06 Suzuki DR650
                  *'82 XJ1100 with the 1179 kit. "Mad Maxim"
                  '82 XJ1100 Completely stock fixer-upper
                  '82 XJ1100 Bagger fixer-upper
                  '82 XJ1100 Motor/frame and lots of boxes of parts
                  '82 XJ1100 Parts bike
                  '81 XS1100 Special
                  '81 YZ250
                  '80 XS850 Special
                  '80 XR100
                  *Crashed/Totalled, still own

                  Comment

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