Degreed Cams

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  • Moarpower
    Forum Apprentice
    • Jul 2024
    • 64
    • Adelaide, South Australia

    #1

    Degreed Cams

    Hey guys.
    My 80 gs850g tensioner failed and jumped time. I'll be pulling the head to ensure there is no damage and I'll replace the timing chain and tensioner.
    The cam gears are slotted for degreeing so I'll need to do the same to ensure timing is correct. If anyone has done this on an 850g and could share some tips it would be most appreciated.

    I have a 90 degree wheel and a dial gauge but the dial gauge is less than 1 inch travel so I may need a new one.
  • Don R
    Forum Mentor
    Past Site Supporter
    • Feb 2024
    • 202
    • Galesburg Illinois

    #2
    I'm a little late and short of experience to help, did you get it back together OK? I'd think the 1" indicator could work

    Comment

    • rphillips
      Forum Guru
      Past Site Supporter
      Super Site Supporter
      • Jun 2005
      • 7608
      • Norene TN

      #3
      Dang, hate that, it seems he got no help back last Nov.. Yes 1" dial indicator is fine but a 90 degree degree wheel?? What is that?? only got 1/4 th of it?... Don't see how that could work.
      1983 GS1100E, 1983 CB1100F, 1991 GSX1100G, 1996 Kaw. ZL600 Eliminator, 1999 Bandit 1200S, 2005 Bandit 1200S, 2000 Kaw. ZRX 1100

      Comment

      • bitzz
        Forum Apprentice
        • Nov 2015
        • 99

        #4
        Do you mean to change the lobe spacing?
        If not, just use the OEM marks and don't touch the cams. Follow the manual.
        "degree ing" refers to the relationship of the lobes of the two cams to each other, NOT the relationship to the crank. you're doing cam TIMING, not degree ing. If the bike was running the way you wanted before it jumped, don't screw with the cam degrees

        Comment

        • Moarpower
          Forum Apprentice
          • Jul 2024
          • 64
          • Adelaide, South Australia

          #5
          Hi guys. So the cam gears on this engine are slotted and we're at some point the timing was degreed. I'll probably just go back to standard if I can line it up.

          As for the 90 degree wheel, I mean it just has 4 90 degree quadrants which I find annoying.

          Comment

          • limeex2
            Forum Sage
            Past Site Supporter
            • Dec 2012
            • 1498
            • Stillwater, Mn.

            #6
            Originally posted by Moarpower
            Hi guys. So the cam gears on this engine are slotted and we're at some point the timing was degreed. I'll probably just go back to standard if I can line it up.

            As for the 90 degree wheel, I mean it just has 4 90 degree quadrants which I find annoying.
            As stated, Leave degreed cams be. If it ran good before, it will run the same after assembly. Doing a leakdown test would tell you if there has been any valve train damage .
            Current Rides: 82 GS1100E, 00 Triumph 955 Speed Triple:twistedevil:, 03 Kawasaki ZRX1200, 01 Honda GL1800, '15 Kawasaki 1000 Versys
            Past Rides: 72 Honda SL-125, Kawasaki KE-175, 77 GS750 with total yosh stage 1 kit, 79 GS1000s, 80 GS1000S, 82 GS750e,82 GS1000S, 84 VF500f, 86 FZR600, 95 Triumph Sprint 900,96 Triumph Sprint, 97 Triumph Sprint, 01 Kawasaki ZRX1200, 07 Triumph Tiger 1050, 01 Yam YFZ250F
            Work in progress: 78 GS1000, unknown year GS1100ES

            Comment

            • slayer61
              Forum Mentor
              • Jun 2018
              • 302
              • Stuck in Lodi, again

              #7
              Originally posted by bitzz
              Do you mean to change the lobe spacing?
              If not, just use the OEM marks and don't touch the cams. Follow the manual.
              "degree ing" refers to the relationship of the lobes of the two cams to each other, NOT the relationship to the crank. you're doing cam TIMING, not degree ing. If the bike was running the way you wanted before it jumped, don't screw with the cam degrees
              I'm gonna disagree with you Sir. When degreeing cams on a twin cam engine, you are able to adjust valve timing between the two cams AND the crank shaft. Advancing cam timing relative to the crank, brings power in sooner and setting the timing retarded relative to the crank brings the power on later, making it feel "reveeer "
              Paul


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