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Twinpot Brake upgrade on 78 Skunk

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    Yes I have some on the shelf. No issue with the alternate wheel as far as brakes or rotors are concerned. ZG1000 - make sure they are the twinpot not the earlier singles

    Those appear to be the right rotors but if going new you might find one for the CBR F4 which has the right bolt circle. It doesn't really make a difference it's just moderately easier to just open the holes up to 8mm rather than using the spacer as a template to re-drill them.

    The bracket kit includes all the brackets & spacers you need. (Rotor spacer acts as a drilling jig, bolts to the CBR rotor & then plunge an 8mm drill or eq right through)

    You need:

    Twinpot Caliper & pads.
    CBR Rotors
    M10 x 40mm (preferably fine thread but course will work) bolts with nuts for each side.

    Fit all bolts with blue loctite.
    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


      Bill - you are out of PM space so I will leave this here just in case:

      9505521420416306000713 - USPS

      Says it arrived when I tracked it. In a small flat rate box.

      Dan
      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


        Sent you a pm to order two brackets, think your box is full. How do you prefer to receive payment?

        Comment


          Sorry about that. A load of them hit my box all at once. Emptied out some space. Paypal works. I will send you a PM. Dan
          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


            Salty, I'm rebuilding a set of ZG calipers. The parts fische shows that many seals are needed. By my count you should need 4 or 1 of each. Kawasaki says 8, 2 of each. What do you believe is correct? http://www.cheapcycleparts.com/oempa...4e/front-brake
            Current Rides: 82 GS1100E, 00 Triumph 955 Speed Triple:twistedevil:, 03 Kawasaki ZRX1200, 01 Honda GL1800, '15 Kawasaki 1000 Versys
            Past Rides: 72 Honda SL-125, Kawasaki KE-175, 77 GS750 with total yosh stage 1 kit, 79 GS1000s, 80 GS1000S, 82 GS750e,82 GS1000S, 84 VF500f, 86 FZR600, 95 Triumph Sprint 900,96 Triumph Sprint, 97 Triumph Sprint, 01 Kawasaki ZRX1200, 07 Triumph Tiger 1050, 01 Yam YFZ250F
            Work in progress: 78 GS1000, unknown year GS1100ES

            Comment


              Originally posted by limeex2 View Post
              Salty, I'm rebuilding a set of ZG calipers. The parts fische shows that many seals are needed. By my count you should need 4 or 1 of each. Kawasaki says 8, 2 of each. What do you believe is correct? http://www.cheapcycleparts.com/oempa...4e/front-brake
              You need one each of 43049,43049-A, 43049-B and 43049-C per caliper. Two of them are seals and the other two are wipers.


              Mark
              1982 GS1100E
              1998 ZX-6R
              2005 KTM 450EXC

              Comment


                It's been a while since I pulled a set apart. I think there is a sealing O ring inside the bore of each piston & a dust seal at the top of each piston.

                I've not yet found a pair (especially of the RG ones as they tend to be newer) that need new seals.

                New rubber bits related to the sliding assembly caused by brake fluid contamination swell or damage.

                If you look at one of the K&L kits (which I wouldn't necessarily recommend I've read of mixed results with them) it shows the same as I remember...





                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


                  Thanks! Makes sense but doesn't make sense...Here's my issue. Good master, steel lines, rebuilt(not by me) calipers with K&L parts. With bike sitting(or driving)Initial lever pull travels what I feel is excessive and builds pressure as it goes towards bar, still braking well other than initial long travel. 2 quick stabs on lever and it is 2 finger great braking. The guys on the ZRX forum are fanatics about brakes and the consensus is caliper seals are rolling causing excess piston movement before sealing up and to rebuild with OEM and NEVER use aftermarket stuff for brakes. Thoughts before I spend time and $$$ ? Where is a good place for brake seal grease?
                  Current Rides: 82 GS1100E, 00 Triumph 955 Speed Triple:twistedevil:, 03 Kawasaki ZRX1200, 01 Honda GL1800, '15 Kawasaki 1000 Versys
                  Past Rides: 72 Honda SL-125, Kawasaki KE-175, 77 GS750 with total yosh stage 1 kit, 79 GS1000s, 80 GS1000S, 82 GS750e,82 GS1000S, 84 VF500f, 86 FZR600, 95 Triumph Sprint 900,96 Triumph Sprint, 97 Triumph Sprint, 01 Kawasaki ZRX1200, 07 Triumph Tiger 1050, 01 Yam YFZ250F
                  Work in progress: 78 GS1000, unknown year GS1100ES

                  Comment


                    Originally posted by limeex2 View Post
                    Here's my issue. Good master, steel lines, rebuilt(not by me) calipers with K&L parts. With bike sitting(or driving)Initial lever pull travels what I feel is excessive and builds pressure as it goes towards bar, still braking well other than initial long travel.
                    I have the same calipers (off a ZX6, tho) and also have very long lever travel before they bite. I rebuilt mine with OEM Kawasaki parts before installing them. Pumping the lever makes very little difference, it doesn't come back like after you have changed pads and have to push the pistons back out. It simply takes quite a bit of lever travel to get them engaged. I have just learned to live with it, the lever never comes back to the bar and won't trap fingers so I am not too worried overall. I do plan to pull my MC apart this winter and see what condition the stack is in just as a precaution, but there isn't anything that makes me think it isn't working correctly.


                    Mark
                    1982 GS1100E
                    1998 ZX-6R
                    2005 KTM 450EXC

                    Comment


                      We did have one set on here years ago that had issues with the bleed valves not sealing properly.. that was causing something like the issue you are experiencing, got to be worth a check.

                      Different M/C's will feel different. If in doubt pick up an EX650 one & try it. They are newer & often available for $20-$30 on Ebay.
                      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


                        I had a spare pair of CBR 900 296mm discs that intended to keep but a shortage of Christmas cash has made me put them on eBay.

                        I've started them at £20 in a 7 day auction ending next Sunday 18 Dec. Free postage to the UK.
                        20161211_155516.jpg

                        http://www.ebay.co.uk/itm/-/182385641494?

                        Comment


                          Hi Guys, new to forum and have been following brake thread.
                          I just wanted to let you know that I managed to vastly upgrade the std brakes on my friends GSXR 1100 H (87 MODEL SLABSIDE) with the std 3 spoke wheels. I tried various ways, and eventually put a Nissin 17mm Master Cylinder off a Yamaha XJR 1200/1300/FZR 1000 on to the bike. All other things were std, apart from braided hoses and this greatly improved the performance by at least 50% with no feel or travel issues. The only thing I had to change was the Banjo Bolt, as the cylinder has different thread.
                          Regards Rob GSX 1100ET
                          Last edited by Guest; 12-29-2016, 09:00 AM.

                          Comment


                            Salty,

                            I'm thinking about upgrading the brakes on my '78 skunk restoration. Could you tell me if these calipers and rotors will work?

                            http://www.ebay.com/itm/401205984388?_trksid=p2055119.m1438.l2649&ssPageNa me=STRK%3AMEBIDX%3AIT



                            I think they're right but I just want to double check. If I go with these, do you have any kits available that aren't black?

                            thanks!

                            Comment


                              Yup, those appear to be the ones. I didn't know those calipers came on a 91 gsx1100g katana, however. Do the look identical to the GS500 and ninja 250 calipers? Short on time or else I'd compare myself. Pretty certain those will work though. They look to be identical as far as I can tell.
                              '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

                              Comment


                                They look the same as the ninja calipers to me. Somewhere in this thread Salty listed a bunch of bikes the twin pots come on and the gsx1100g was one.

                                Comment

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