Caliper bolts

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  • angus
    Forum Mentor
    • May 2012
    • 292
    • Dublin Ireland

    #1

    Caliper bolts

    Anybody know what size the thread is on bolt that holds front calipers to fork legs its part no 12 on calipers diagram
    1983 GS 650 gl

    1982 GS 850 gl

    1980 GS 550L

    1982 GS 650 G(KATANA)

    Gsx 1400 daily ride
  • uk gs nut
    Forum Mentor
    • Feb 2011
    • 691
    • Co durham uk

    #2
    M10?1.25 can't remember the length.
    My bikes 79 GS1000 1085 checked and approved by stator the GSR mascot :eagerness: and 77 GS750 with 850 top end, GS850g, and my eldest sons 78 GS550, youngest sons GS125. Project bike 79 GS1000N

    Comment

    • angus
      Forum Mentor
      • May 2012
      • 292
      • Dublin Ireland

      #3
      Super I new I'd bought them from racebolt UK and found them tonight.There 35mm and I think they should be 40mm.Mabey a bit of thread lock on them.Cheers for the help.
      Last edited by angus; 09-19-2017, 05:25 PM.
      1983 GS 650 gl

      1982 GS 850 gl

      1980 GS 550L

      1982 GS 650 G(KATANA)

      Gsx 1400 daily ride

      Comment

      • bwringer
        Forum LongTimer
        Bard Award Winner
        GSResource Superstar
        Past Site Supporter
        Super Site Supporter
        • Oct 2003
        • 17066
        • Indianapolis

        #4
        The part number would seem to indicate these should be 40mm thread length:

        01550-10407

        The thread is M10 X 1.25mm pitch, which is JIS standard.

        I'd make sure this is right before riding -- there's not much thread there, and brakes are sorta important...

        Auto parts shoppes should have bolts that will work. Tell 'em it's for a Toyota or something.
        1983 GS850G, Cosmos Blue.
        2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
        2015 Yamaha FJ-09, Magma Red Power Corrupts...
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        Comment

        • salty_monk
          Forum LongTimer
          GSResource Superstar
          Past Site Supporter
          Super Site Supporter
          • Oct 2006
          • 14001
          • London, UK to Redondo Beach, California

          #5
          All the stock caliper bolts are 40mm. It's actually a very common caliper bolt size
          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..... - FOR SALE!

          www.parasiticsanalytics.com

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

          Comment

          • Guest

            #6
            Originally posted by angus
            Mabey a bit of thread lock on them.
            No thread lock, the torque spec given in the manual is for clean, dry threads and you will over torque them if you put thread lock on. You ARE torquing them properly, right?


            Mark

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            • mnferwerda

              #7
              Metric bolts come in various grades. What you get in a store like Home Depot/Lowes is 8.8 which is not strong enough. I think you need at least 9.8 or 10.9. I'm assuming the guy at the auto parts store should be able to tell you what you need.

              Comment

              • uk gs nut
                Forum Mentor
                • Feb 2011
                • 691
                • Co durham uk

                #8
                The auto parts stores in north America and Canada are far superior to the ones in uk. I have been in some of the stores on your side of the pond, and my eyes were wide open !!!
                My bikes 79 GS1000 1085 checked and approved by stator the GSR mascot :eagerness: and 77 GS750 with 850 top end, GS850g, and my eldest sons 78 GS550, youngest sons GS125. Project bike 79 GS1000N

                Comment

                • angus
                  Forum Mentor
                  • May 2012
                  • 292
                  • Dublin Ireland

                  #9
                  I got them from racebolt UK not genuine Suzuki.They say there bolts are used on TT bikes.The ones I have are 35mm and should be 40mm.If I torque them do I use the same settings as in manual as I don't want 1 to snap.
                  1983 GS 650 gl

                  1982 GS 850 gl

                  1980 GS 550L

                  1982 GS 650 G(KATANA)

                  Gsx 1400 daily ride

                  Comment

                  • salty_monk
                    Forum LongTimer
                    GSResource Superstar
                    Past Site Supporter
                    Super Site Supporter
                    • Oct 2006
                    • 14001
                    • London, UK to Redondo Beach, California

                    #10
                    You can use that torque & loctite & you will be fine... 35mm is right on the borderline of long enough.

                    Grade 8.8 should be ok for brakes, A2-70 for stainless - 10.9 is preferable. There is not really much stress on the bolts as it's a cross shear force (i.e. the caliper is trying to be rotated).

                    I've used 8.8 before without issue.
                    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..... - FOR SALE!

                    www.parasiticsanalytics.com

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

                    Comment

                    • angus
                      Forum Mentor
                      • May 2012
                      • 292
                      • Dublin Ireland

                      #11
                      Super I'll get to it tomorrow
                      1983 GS 650 gl

                      1982 GS 850 gl

                      1980 GS 550L

                      1982 GS 650 G(KATANA)

                      Gsx 1400 daily ride

                      Comment

                      • angus
                        Forum Mentor
                        • May 2012
                        • 292
                        • Dublin Ireland

                        #12
                        What it thread type for bleed nipple my local motor factors has m8 by 1.25mm would these work
                        1983 GS 650 gl

                        1982 GS 850 gl

                        1980 GS 550L

                        1982 GS 650 G(KATANA)

                        Gsx 1400 daily ride

                        Comment

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