Valves & Shims - Input

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  • halz426
    • Jan 2026
    #1

    Valves & Shims - Input

    This is my first time checking and adjusting valves on a gs and I could use some input.

    Attached are my valve clearances and shim sizes.

    I would like to get all my valves as close to the same as possible (0.07 - 0.08) to help tuning and performance.

    I am looking for suggestions as to what sizes I need or which ones to swap around.

    Any input is appreciated. This is for a 77 GS 750 B

    Thank You
    Tags: None
    • Flyboy
      #2
      Steve will be along shortly, send him a nice friendly email and in exchange he will gladly send you his world famous valve clearance spreadsheet that does all the work for you.

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        • Guest
          #3
          [QUOTE=halz426;2060218]This is my first time checking and adjusting valves on a gs and I could use some input.

          Attached are my valve clearances and shim sizes.

          I would like to get all my valves as close to the same as possible (0.07 - 0.08) to help tuning and performance.

          I am looking for suggestions as to what sizes I need or which ones to swap around.

          Any input is appreciated. This is for a 77 GS 750 B

          Thank You[/QUOTE

          Are you mixing some metric and inch measurements? If not, a few readings have an extra 0. If these are all actually something over .04mm, you are in pretty good shape. If you want to get them to .07mm, just subtract the difference in what you have from what you want, then subtract that number from from the shim thickness you currently have. Also, lot's of guys run up around .1mm clearance. Ray
          Last edited by Guest; 05-27-2014, 04:26 PM. Reason: More help.

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            • Steve
              GS Whisperer
              • Jun 2005
              • 35924
              • southwest oHIo
              #4
              Originally posted by Flyboy
              Steve will be along shortly, send him a nice friendly email and in exchange he will gladly send you his world famous valve clearance spreadsheet that does all the work for you.
              Shortly? Sorry about the wait.

              Yes, it is, indeed, "world famous". Now in 17 countries besides the US of A.

              Information is in my sig.

              .
              sigpic
              mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
              hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
              #1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
              #2 son: 1980 GS1000G
              Family Portrait
              Siblings and Spouses
              Mom's first ride
              Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
              (Click on my username in the upper-left corner for e-mail info.)

                Comment

                • halz426
                  #5
                  Sorry, the extra 0's were a typo. I used a metric feeler gauge. (My bad). Lol

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                    • Guest
                      #6
                      Looks like all your clearances are within spec

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                        • Guest
                          #7
                          What air says. Check them again in another 5 K, may be due then. Ray

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