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Crankcase Assembly - How do I NOT seal the bearings to the cases?

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    Crankcase Assembly - How do I NOT seal the bearings to the cases?

    I'm almost ready to put the crankcase halves together, but I'm not sure how to avoid getting the threebond sealant on the crank shaft and counter balance shaft bearing surfaces?

    Transmission is easy, they're the outside of the bearing shells so they don't move (circled in green).

    The crank shaft and counter balance shaft are what worry me (circled in red).



    Any ideas or advice on how to avoid this?
    1982 GS450E - The Wee Beastie
    1984 GSX750S Katana 7/11 - Kit Kat - BOTM May 2020

    sigpic

    450 Refresh thread: https://www.thegsresources.com/_foru...-GS450-Refresh

    Katana 7/11 thread: http://www.thegsresources.com/_forum...84-Katana-7-11

    #2
    Finally! My search turned up something... dunno what I was doing wrong when I posted this but I got no results.

    Suzuki Don had a similar question when putting his 550 cases together, so I'm all set. Now if I can just get my O rings sorted in the other thread I'll be laughin'.

    This forum contains old posts which may have information which may be useful. It is a closed forum in that you can not post here any longer. Please post your questions in the other technical forums.
    1982 GS450E - The Wee Beastie
    1984 GSX750S Katana 7/11 - Kit Kat - BOTM May 2020

    sigpic

    450 Refresh thread: https://www.thegsresources.com/_foru...-GS450-Refresh

    Katana 7/11 thread: http://www.thegsresources.com/_forum...84-Katana-7-11

    Comment


      #3
      Hey Pete,

      Get a small acid brush or similar and use that to apply the sealer. Just a thin layer is all that's needed.

      Good luck.
      Ed

      To measure is to know.

      Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

      Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

      Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

      KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

      Comment


        #4
        Hey Pete, Follow ED's (Ness's) advice to the letter. "HE's DA MAN" on ALL things mechanical. I followed his instructions twice (not his fault, I had to pull it apart to check bottom end for mysterious noise) and no oil leaks either time. Follow the advice he gave in my thread and you will have no probs. Everything will work out OK.

        Comment


          #5
          Cheers Ed and Don, and yep, I've seen Ed put many useful tidbits of information around the place so plan to follow that indeed

          Ed, is a small normal paintbrush ok? I did a Google search on acid brushes today and maybe I missed something but I couldn't see the difference...

          At least I believe I've done one thing right which is buy the good Threebond sealant

          1982 GS450E - The Wee Beastie
          1984 GSX750S Katana 7/11 - Kit Kat - BOTM May 2020

          sigpic

          450 Refresh thread: https://www.thegsresources.com/_foru...-GS450-Refresh

          Katana 7/11 thread: http://www.thegsresources.com/_forum...84-Katana-7-11

          Comment


            #6
            Pete, this diagram is from a KZ400 Twin manual, but gives the idea of where to place the sealant.




            Hope it helps.

            Comment


              #7
              Cheers again Don, that definitely helps!

              The bit that concerns me is getting it too thick too close to the bearings, causing the sealant to squeeze onto the bearing when I torque the bolts down.

              So I guess going by all this that if I'm careful and keep it thin as everyone keeps saying then I should be good to rock and roll
              1982 GS450E - The Wee Beastie
              1984 GSX750S Katana 7/11 - Kit Kat - BOTM May 2020

              sigpic

              450 Refresh thread: https://www.thegsresources.com/_foru...-GS450-Refresh

              Katana 7/11 thread: http://www.thegsresources.com/_forum...84-Katana-7-11

              Comment


                #8
                Hi Pete,

                An acid brush is just a cheap throw away paint brush - they sell them in bulk packs.

                You don't want to get sealer on the bearings but no crisis if a little gets on there.

                Did you make sure the dowel holes are clean so the case halves slide together easily?

                And did you look for that oil port O-ring yet? If your engine has this there will be a recess in the cases for the O-ring. I've been sent lots of wrong parts from Suzuki before so those small O-rings might just be a mistake.
                Ed

                To measure is to know.

                Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182

                Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846

                Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf

                KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection

                Comment


                  #9
                  Cheers Ed, I believe I should have a small paint brush around that will do the trick then.

                  As far as the O ring goes, I believe I've got it sorted (in the other thread).

                  There's no O ring between the cases on the 450 and no recesses I can find for one either, and trust me I looked hard

                  Thanks again for your help on this, should be able to get my crankcases together one night this week now
                  1982 GS450E - The Wee Beastie
                  1984 GSX750S Katana 7/11 - Kit Kat - BOTM May 2020

                  sigpic

                  450 Refresh thread: https://www.thegsresources.com/_foru...-GS450-Refresh

                  Katana 7/11 thread: http://www.thegsresources.com/_forum...84-Katana-7-11

                  Comment


                    #10
                    Originally posted by pete View Post
                    Cheers Ed, I believe I should have a small paint brush around that will do the trick then.

                    As far as the O ring goes, I believe I've got it sorted (in the other thread).

                    There's no O ring between the cases on the 450 and no recesses I can find for one either, and trust me I looked hard

                    Thanks again for your help on this, should be able to get my crankcases together one night this week now
                    Well done pete. We look forward to pictures of the finished product.

                    Comment


                      #11
                      Me too Don, me too!
                      1982 GS450E - The Wee Beastie
                      1984 GSX750S Katana 7/11 - Kit Kat - BOTM May 2020

                      sigpic

                      450 Refresh thread: https://www.thegsresources.com/_foru...-GS450-Refresh

                      Katana 7/11 thread: http://www.thegsresources.com/_forum...84-Katana-7-11

                      Comment


                        #12
                        I think lots of people are.No pressure Pete

                        Comment


                          #13
                          Stay tuned on my rebuild thread tomorrow morning... I would guess that would be tonight for you US/Canadian lot I would think...
                          1982 GS450E - The Wee Beastie
                          1984 GSX750S Katana 7/11 - Kit Kat - BOTM May 2020

                          sigpic

                          450 Refresh thread: https://www.thegsresources.com/_foru...-GS450-Refresh

                          Katana 7/11 thread: http://www.thegsresources.com/_forum...84-Katana-7-11

                          Comment

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