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Question about rear caliper torque plate and rubber bushing ?

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  • #1

    Question about rear caliper torque plate and rubber bushing ?

    I was still going through parts today to continue building my 80SG.

    Came across a issue trying to fit the rear caliper torque plate to the bushing on the swingarm.

    First off I have 3 parts bikes, 2 - 80SG and a 79F.

    Parts were stripped 3 years ago and stuffed in boxes, not organized

    The plate I think is right for a 80SG is this one with the slot were it is supposed to go over the swingarm pin bushing ..

    Is this the correct plate for a 80SG ?



    According to the fiche, 79SF and 80SG use same plate..

    79F has a little different style, with a elongated hole for the bushing instead of a open slot ..

    The only rubber piece I found which appears to fit is this one.






    Problem is, the plate slot will not go over the groove in the rubber bushing.

    Slot in the plate is about 3/8" , the rubber bushing slot is closer to 3/4", and I think the rubber bushing will get toasted when trying to fit this plate over it ?

    Do I have the correct parts here ?

    As I said, these parts got boxed up 3 years ago, and never got labeled to which bike they came off of ..

    thanks .
    1980 SG - "Blue Balls"

    Complete Restoration - Finished June 21/2010

    - 1179 kit
    - 80/81 carbs 42.5/115 mains with XS pods
    - Mac 4 into 1 exhaust
    - Venture auto CCT
    - progressive fork springs - no air
    - Mike's progressive rear shocks
    - Galfer S.S. Brake Lines
    - XSDirect - Black Coils
    - 8 mm S.S. Core Plug Wires
    - T.C. fuse box
    - TKat fork brace
    - Geezer regulator
    - Battlax BT45 V-Rated tires
    - 5W40 - Rotella T6 Synth Engine Oil
    - rest of bike is "good old Yamaha"
    Tags: None
  • #2
    That plate looks just like the one on my LH, but I don't think that's the proper plate for the SG. The proper one looks like this:



    The plate for the F looks like this (very similar), and is a different part number:



    As nicely as that rubber piece seems to fit, I don't think it's the right one either. The proper one looks like this:

    Last edited by CatatonicBug; 04-25-2010, 06:28 PM.
    1980 XS850SG - Sold
    1981 XS1100LH Midnight Special (Sold) - purchased 9/29/08
    Fully Vetterized and Dynojet Kit added, Heated Grips, Truck-Lite LED headlight, Accel Coils, Irridium plugs, TKAT Fork Brace, XS850LH Final Drive & Black SS Brake lines from Chacal.
    Here's my web page devoted to my bike! XS/XJ User's Manuals there, and the XJ1100 Service Manual and both XS1100 Service manuals (free download!).

    Whether you think you can, or you think you cannot - You're right.
    -H. Ford

    Comment

    • #3
      First 2 pics you got are same plate with the elongated hole , they are for a 79F ..

      79SF, 80SG, 81LH all use same plate I have pictured .. 3H3-25371-00-00

      with the slot ..


      problem I got is the rubber bushing > is it the correct one for a 80SG

      UK site also shows these in the 80SG parts along with the pic you posted, but who knows if it is the correct one or not ?







      they all look like the same one like the one I got, but there is no way that plate will go over that slot in the rubber ..

      According to the fiche, the 80SG and your 81LH use same rubber...

      What does yours look like ?

      thanks .
      Last edited by Bullet; 04-25-2010, 06:45 PM. Reason: added info ..
      1980 SG - "Blue Balls"

      Complete Restoration - Finished June 21/2010

      - 1179 kit
      - 80/81 carbs 42.5/115 mains with XS pods
      - Mac 4 into 1 exhaust
      - Venture auto CCT
      - progressive fork springs - no air
      - Mike's progressive rear shocks
      - Galfer S.S. Brake Lines
      - XSDirect - Black Coils
      - 8 mm S.S. Core Plug Wires
      - T.C. fuse box
      - TKat fork brace
      - Geezer regulator
      - Battlax BT45 V-Rated tires
      - 5W40 - Rotella T6 Synth Engine Oil
      - rest of bike is "good old Yamaha"

      Comment

      • #4
        Originally posted by Bullet View Post
        First 2 pics you got are same plate with the elongated hole , they are for a 79F ..

        79SF, 80SG, 81LH all use same plate I have pictured .. 3H3-25371-00-00

        with the slot ..
        They may LOOK the same, but the part numbers are different.

        The first one is 3H3-25371-00-00, but the second one is 2H7-25371-00-00. There must be something different about them...

        However, I just looked at the listing for the LH (on benefiscal.co.uk), and though the fische shows a plate with a slot, the part number and corresponding photo shows the one with the elongated hole.

        I'd measure the rubber on mine, but it's shredded, and only being held on by the plate itself...
        Last edited by CatatonicBug; 04-25-2010, 06:59 PM.
        1980 XS850SG - Sold
        1981 XS1100LH Midnight Special (Sold) - purchased 9/29/08
        Fully Vetterized and Dynojet Kit added, Heated Grips, Truck-Lite LED headlight, Accel Coils, Irridium plugs, TKAT Fork Brace, XS850LH Final Drive & Black SS Brake lines from Chacal.
        Here's my web page devoted to my bike! XS/XJ User's Manuals there, and the XJ1100 Service Manual and both XS1100 Service manuals (free download!).

        Whether you think you can, or you think you cannot - You're right.
        -H. Ford

        Comment

        • #5
          However, I just looked at the listing for the LH (on benefiscal.co.uk), and though the fische shows a plate with a slot, the part number and corresponding photo shows the one with the elongated hole
          the pic is wrong bud , slot = 3H5 part , elongated hole is the 2H7 part .. there is only 2 types ..

          I got both of them here ..

          I dug back into the boxes, and I have 2 slotted ones and one with a hole .. so the 2 slotted ones came off my 2 80SG , many moons ago .

          3H5 plate ( slot ) is the right plate for the 79SF /80SG and 81LH

          In question is the bushing .. and which one is correct for the slot plate.

          I hate Yamaha , lol ..
          1980 SG - "Blue Balls"

          Complete Restoration - Finished June 21/2010

          - 1179 kit
          - 80/81 carbs 42.5/115 mains with XS pods
          - Mac 4 into 1 exhaust
          - Venture auto CCT
          - progressive fork springs - no air
          - Mike's progressive rear shocks
          - Galfer S.S. Brake Lines
          - XSDirect - Black Coils
          - 8 mm S.S. Core Plug Wires
          - T.C. fuse box
          - TKat fork brace
          - Geezer regulator
          - Battlax BT45 V-Rated tires
          - 5W40 - Rotella T6 Synth Engine Oil
          - rest of bike is "good old Yamaha"

          Comment

          • #6
            Bullett, that plate looks exactly like the ones on both my SH bikes. Not sure about the grommet dimension, but on both my bikes it slides on fairly easily.
            Life is what happens while your planning everything else!

            When your work speaks for itself, don't interrupt.

            81 XS1100 Special - Humpty Dumpty
            80 XS1100 Special - Project Resurrection


            Previously owned
            93 GSX600F
            80 XS1100 Special - Ruby
            81 XS1100 Special
            81 CB750 C
            80 CB750 C
            78 XS750

            Comment

            • #7
              thanks, yeah I am pretty sure that ain't the right rubber piece I got there ..

              No way it will go into the plate slot without shredding it ..

              Hopefully someone has a pic of the correct rubber .. and I will go box diving again .. but I gave the rubber pieces a good looking over today, and the pic of the one I got now is the only thing that looked right ..

              I really wish I had organized these parts better when I took these bikes apart , 3 years is a looooong time , lol.
              1980 SG - "Blue Balls"

              Complete Restoration - Finished June 21/2010

              - 1179 kit
              - 80/81 carbs 42.5/115 mains with XS pods
              - Mac 4 into 1 exhaust
              - Venture auto CCT
              - progressive fork springs - no air
              - Mike's progressive rear shocks
              - Galfer S.S. Brake Lines
              - XSDirect - Black Coils
              - 8 mm S.S. Core Plug Wires
              - T.C. fuse box
              - TKat fork brace
              - Geezer regulator
              - Battlax BT45 V-Rated tires
              - 5W40 - Rotella T6 Synth Engine Oil
              - rest of bike is "good old Yamaha"

              Comment

              • #8
                The plate in the photo looks like it is from a 79 special. If you use a plate with a hole as compared to a slot, put the grommet in the hole on the plate first then turn the plate onto the pin. The grommet should be pretty soft. I got some MOS grommets for that plate and they were pretty soft and easy to install into the plate hole then over the pin
                Rob
                KEEP THE RUBBER SIDE DOWN

                1978 XS1100E Modified
                1978 XS500E
                1979 XS1100F Restored
                1980 XS1100 SG
                1981 Suzuki GS1100
                1983 Suzuki GS750S Katana
                1983 Honda CB900 Custom

                Comment

                • #9
                  The plate in the photo looks like it is from a 79 special.
                  If you mean the photo in my first post in the thread ( slotted plate ) yes, this plate was the production plate on 79SF, 80SG, 81SG, 81LH .. according to Yahama fiche ..

                  The 79F used the elongated hole plate .. ( I have one of them too, but it is rusted and crustied, and was not my choice part to prep 3 years ago ..

                  this is the plate I have ready to install ( slotted ) .. ( painted, shiny and new looking )

                  I just want to know what the proper rubber grommet looks like for the slotted plate ???

                  The one I posted a pic of, will not fit in the slot without ripping it to shreds ..

                  Sorry, but I got 27 boxes of parts, unlabelled from 4 different bikes ( 79F, 80SG x 2 , 81SH ) packed up almost 3 years ago, and my memory is not that good anymore, lol

                  I am just trying to figure out the correct parts to go on the 80SG I am building ..
                  1980 SG - "Blue Balls"

                  Complete Restoration - Finished June 21/2010

                  - 1179 kit
                  - 80/81 carbs 42.5/115 mains with XS pods
                  - Mac 4 into 1 exhaust
                  - Venture auto CCT
                  - progressive fork springs - no air
                  - Mike's progressive rear shocks
                  - Galfer S.S. Brake Lines
                  - XSDirect - Black Coils
                  - 8 mm S.S. Core Plug Wires
                  - T.C. fuse box
                  - TKat fork brace
                  - Geezer regulator
                  - Battlax BT45 V-Rated tires
                  - 5W40 - Rotella T6 Synth Engine Oil
                  - rest of bike is "good old Yamaha"

                  Comment

                  • #10
                    I would guess that the grommet for the slotted one would be a smaller outside DIA. When you put the grommet into the hole on the non slotted type the grommet becomes elongated to fill that elongated hole. Try fastener outfits if you can't find one.
                    KEEP THE RUBBER SIDE DOWN

                    1978 XS1100E Modified
                    1978 XS500E
                    1979 XS1100F Restored
                    1980 XS1100 SG
                    1981 Suzuki GS1100
                    1983 Suzuki GS750S Katana
                    1983 Honda CB900 Custom

                    Comment

                    • #11
                      Hi Bullet, sorry for the confusion one of the three pics of the 3H3 torque stopper plate on my benefiscal.co.uk website was wrong. I've removed the pic.

                      You've got the right rubber (3H3-25374-00-00) for your SG but you've mounted it the wrong way round, it should have the thicker side towards the swing arm.

                      I just replaced the rubber on my SG (so I know those photo's are of the right rubber) and gave it a squirt of silicon spray before fitting, the rubber distorts but holds in there OK.
                      Brian
                      XS1100 LG "Mr T", SG "ICBM" & FJ1200
                      Check out the XS Part Number Finder

                      Be not stingy in what costs nothing as courtesy, counsel and countenance.

                      Comment

                      • #12
                        Well, this rubber bushing has a nice little inner groove which fits perfectly over the flat steel round plate on the pin ( the way my pic shows it installed )

                        If I got it backwards, why is there a groove cut in the spacer ?

                        Also there is still the issue of the plate fitting over this bushing outer groove..

                        The slot cut into the plate is just under .490 inch wide ..

                        The rubber outer groove, is almost a 1" ..

                        If anyone has can post a pic with their 80SG with original rubber bushing installed, this will solve this issue ..

                        thanks
                        1980 SG - "Blue Balls"

                        Complete Restoration - Finished June 21/2010

                        - 1179 kit
                        - 80/81 carbs 42.5/115 mains with XS pods
                        - Mac 4 into 1 exhaust
                        - Venture auto CCT
                        - progressive fork springs - no air
                        - Mike's progressive rear shocks
                        - Galfer S.S. Brake Lines
                        - XSDirect - Black Coils
                        - 8 mm S.S. Core Plug Wires
                        - T.C. fuse box
                        - TKat fork brace
                        - Geezer regulator
                        - Battlax BT45 V-Rated tires
                        - 5W40 - Rotella T6 Synth Engine Oil
                        - rest of bike is "good old Yamaha"

                        Comment

                        • #13
                          Let's try this theory then .. ( this was also suggested by pm from another member last night ) and this way seems most correct to me ..

                          Bushing is installed the way I have it in the pic in my first post ..

                          Torque plate does not go over the bushing but between the bushing and swingarm on the pin on the swingarm.


                          It fits tight, the angle of the plate to the axle is correct ..

                          Anyone else confirm this is correct ?

                          Pics ..





                          1980 SG - "Blue Balls"

                          Complete Restoration - Finished June 21/2010

                          - 1179 kit
                          - 80/81 carbs 42.5/115 mains with XS pods
                          - Mac 4 into 1 exhaust
                          - Venture auto CCT
                          - progressive fork springs - no air
                          - Mike's progressive rear shocks
                          - Galfer S.S. Brake Lines
                          - XSDirect - Black Coils
                          - 8 mm S.S. Core Plug Wires
                          - T.C. fuse box
                          - TKat fork brace
                          - Geezer regulator
                          - Battlax BT45 V-Rated tires
                          - 5W40 - Rotella T6 Synth Engine Oil
                          - rest of bike is "good old Yamaha"

                          Comment

                          • #14
                            Can't say if thats wrong or right but if its right what purpose does the rubber serve? Seems like you could take it off and there would be no difference right?
                            1979 xs1100 Special -
                            Stock air box/K&N Filter, MAC 4-2 exhaust, Bad-Boy Air horn, TC fuse box, Windshield, Soft bags, Vetter Fairing, Blinkers->Run/Turn/Brake Lights, Headlight Modulator, hard wire GPS power

                            Short Stack - 1981 xs1100 Standard - lowered for SWMBO.

                            Originally posted by fredintoon
                            Goes like a train, corners like a cow, shifts like a Russian tractor, drinks like a fish, you are gonna love it.
                            My Bike:
                            [link is broken]

                            Comment

                            • #15
                              Originally posted by psycoreefer View Post
                              Can't say if thats wrong or right but if its right what purpose does the rubber serve? Seems like you could take it off and there would be no difference right?
                              I think you will hear a clunk when you mash the rear brake...
                              Skids (Sid Hansen)

                              Down to one 1978 E. Stock air box with K&N filter, 81H pipes and carbs, 8500 feet elevation.

                              Comment

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