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    #16
    Originally posted by jon View Post
    I dont understand what that means. I was under the impression that I would need to change them as needed or when the gas closes.
    That was a response to Chuck Hahn, who was suggesting grinding them to custom thicknesses.

    Yes, you will need to change shims occasionally.

    Have you opened up your engine yet to measure clearances and inventory your shims?

    .
    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.)

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      #17
      No I haven't. I am planning to ride the rest of the season then do the job . Possibly have the whole motor gone threw. I was just hoping there was a kit or a certain number of shims I could purchase that would cover most cases. Also I did try my local dealer and they dont have any. In fact they brought out 4 boxes of very small in diameter shims like 7.3 or something and when I questioned the sizes said shims are shims. After a a quick conversation we came to agree that they just didn't have what I needed.

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        #18
        Also is hitting quick reply the best way to reply to specific people ,as in these replys?

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          #19
          Originally posted by jon View Post
          Also is hitting quick reply the best way to reply to specific people ,as in these replys?
          Quick Reply keeps the conversation going, but if you want to be specific about whom you are addressing, it sometimes help to use the Reply with quote on the bottom of the post you want to respond to. That's what I did here.
          Rich
          1982 GS 750TZ
          2015 Triumph Tiger 1200

          BikeCliff's / Charging System Sorted / Posting Pics
          Destroy-Rebuild 750T/ Destroy-Rebuild part deux

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            #20
            Originally posted by jon View Post
            Also is hitting quick reply the best way to reply to specific people ,as in these replys?
            Hitting the "Reply" button is pretty much the only way to respond. However, if the thread is really busy, with many different posters, you might want to go back to the post you are replying to and hit the "Reply With Quote" button. That will copy their post, then you can enter your reply. NOTE: if the quoted post is very long, possibly with several other points, you can edit out the irrelevant stuff and leave just the point to which you are replying.

            Back to your valve shims: go back and re-read the replies in posts 2, 3, 4 and 5. There were no "standard" shims in the engine when it left the factory. Due to production tolerances, there were variations in the clearances, which required different shim thicknesses. It was common to find shims in the 2.65 to 2.80 range, but there is also no way to know if they have been changed since new. As an engine wears, the required shim thickness will decrease, but until you open up your engine, measure your clearance, then remove the shim to see its size, you will have no way to know what shim needs to be in there.

            .

            .
            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


              #21
              Bear in mind that when Steve says take inventory of your shims do not rely on the thickness on the shim. It may have been ground before. You might spot tell tale marks depending of how good or bad the grinder did the job. It's good practice to verify with a vernier caliper.
              97 R1100R
              Previous
              80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

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                #22
                True enough, but hopefully, if the person that did the grinding was concientious enough to grind on the side with the printed numbers, you would HAVE to measure the shim to know the thickness.

                Fortunately, not many people have access to proper grinding machines, so this is a rather rare situation.

                .
                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


                  #23
                  I measure every one regardless. That may be just me. I wipe them real dry before measuring too...oil adds thickness
                  MY BIKES..1977 GS 750 B, 1978 GS 1000 C (X2)
                  1978 GS 1000 E, 1979 GS 1000 S, 1973 Yamaha TX 750, 1977 Kawasaki KZ 650B1, 1975 Honda GL1000 Goldwing, 1983 CB 650SC Nighthawk, 1972 Honda CB 350K4, 74 Honda CB550

                  NEVER SNEAK UP ON A SLEEPING DOG..NOT EVEN YOUR OWN.


                  I would rather trust my bike to a "QUACK" that KNOWS how to fix it rather than a book worm that THINKS HE KNOWS how to fix it.

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                    #24
                    Originally posted by chuck hahn View Post
                    I measure every one regardless. That may be just me. I wipe them real dry before measuring too...oil adds thickness
                    I should hope so otherwise we're wasting our time filling sumps
                    Seriously, it's no harm to get a reminder of what oil is expected to do.
                    97 R1100R
                    Previous
                    80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

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                      #25
                      GhostGS ground me some down to custom sizes to put them all on top tolerances in the skunk many moons ago...
                      1980 GS1000G - Sold
                      1978 GS1000E - Finished!
                      1980 GS550E - Fixed & given to a friend
                      1983 GS750ES Special - Sold
                      2009 KLR 650 - Sold - gone to TX!
                      1982 GS1100G - Rebuilt and finished. - Sold
                      2009 TE610 - Dual Sporting around dreaming of Dakar.....

                      www.parasiticsanalytics.com

                      TWINPOT BRAKE UPGRADE LINKY: http://www.thegsresources.com/_forum...e-on-78-Skunk/

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                        #26
                        About five of mine are at or close to the thinnest stock shim. Is there a red line for thickness and you go to the valves?
                        97 R1100R
                        Previous
                        80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

                        Comment


                          #27
                          If you have that many that are approaching the minimum, you might want to step back and evaluate the rest of the engine.

                          The way to fix that would be to remove 0.5 to 0.7mm from the tip of the valve. That would require shims that much thicker.

                          While you have the head off to remove the valves for their shave job, you should also install new seals.

                          How are the rings? Any other gaskets leaking that would be easier to change while the engine is apart?

                          .
                          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


                            #28
                            The engine is tired. The 53k on the odo is optimistic I'd say judging by the state of the cam chain runners. I did a top end gasket and seal job in 2014 with a €70 complete engine set. I was losing a liter per 400 miles at the time through the front of the headgasket. Bores were good. I have engine oil leaking into the intermediate transmission space as well. Cosmetically the bike is not the best and an unlikely candidate for a full restore.Seat pan is cracked headers getting rusty. It keeps soldiering on. It's been down hard on the right. There is a brake pedal gouge in the clutch case and it has a round master for the front brake and the turn signals are the later plastic type and the engine mount plates are stainless steel. Bit of a Frankenbike and probably going for parts if or when I ever replace it. Still starts on the button and with two up it just pours on the torque in top gear at silly low speeds.
                            97 R1100R
                            Previous
                            80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

                            Comment


                              #29
                              Originally posted by Brendan W View Post
                              About five of mine are at or close to the thinnest stock shim. Is there a red line for thickness and you go to the valves?
                              Time for a machine shop valve job and evaluation of the valve faces. When they are worn that much that you are at the thinnest shims, the valve faces are very worn and eroded, and your head will be flowing in a sub par manner.
                              '77 GS750 920cc heavily modded
                              '97 Kawasaki KDX220R rugged terrain ripper!
                              '99 Kawasaki KDX220R​ rebuild in progress
                              '79 GS425stock
                              PROJECTS:
                              '77 Suzuki PE250 woods racer
                              '77 GS550 740cc major mods
                              '77 GS400 489cc racer build
                              '76 Rickman CR1000 GS1000/1100
                              '78 GS1000C/1100

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                                #30
                                Originally posted by Chuck78 View Post
                                Time for a machine shop valve job and evaluation of the valve faces. When they are worn that much that you are at the thinnest shims, the valve faces are very worn and eroded, and your head will be flowing in a sub par manner.
                                Seems like some one tried to do a lot with the motor. When the head was off the valves seats seemed too clean like a recent job. Maybe they went too deep or had to.
                                97 R1100R
                                Previous
                                80 GS850G, 79 Z400B, 85 R100RT, 80 Z650D, 76 CB200

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