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  • #1

    front brake master

    OK, here we go, so I bought new front brake master cylinder for my bike from Mike's. There is an adjustment screw, I think it's for the piston for the brake,any idea's? and how does the adjustment work? it has a nut lock on it so you can lock the adjustment in place. My original equiptment doesn't have an adjustment... I'm lost. and not to start another thread,,, I used the mity-vac to bleed the brakes and that thing was useless.(could be just me) Bled the brakes the old fashion way.was way easier for me. How far should the brake handle go in(EX. half way?) thanks all
    FOXS-XS11SG

    2009 Suzuki V Strom 650,Adventure in Touring,I call her "Smooth" SW Motech engine guard,Coocase top case w/ LED brake and tail lights,20" MRA touring screen w/adjusable bracket,Grip heaters,fender ex-tender,Givi hard sidebags

    1980 XS11SG-sold
    1999 Vulcan classic-sold
    1982 XJ 650-sold

    Old is only a state of mind......John
    Tags: None
  • #2
    Is the adjustment screw on the MC body, or on the lever? The lever should have the screw, and that presses directly onto the piston. That is the "free-play" adjustment. On mine, if I squeeze really hard, I can get the lever to go down almost exactly halfway to the grip.
    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

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    • #3
      Thanks Catonic, thats what I thought,but I still can't seem to get free play. i'll keep working at it. And my lever goes about the same. Thanks for the help.John
      FOXS-XS11SG

      2009 Suzuki V Strom 650,Adventure in Touring,I call her "Smooth" SW Motech engine guard,Coocase top case w/ LED brake and tail lights,20" MRA touring screen w/adjusable bracket,Grip heaters,fender ex-tender,Givi hard sidebags

      1980 XS11SG-sold
      1999 Vulcan classic-sold
      1982 XJ 650-sold

      Old is only a state of mind......John

      Comment

      • #4
        I have mine backed off about 1/16 of an inch before it engages mc piston, works fine that way for me
        Trapped in time. Surrounded by evil. Low on gas.

        1980 XS1100G 1179 kit, Tkat brace, progressive springs & shocks, jardine spaghetti, Mikes coils, Geezer's rectifier

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        • #5
          That's about the same for me. Just back the screw out all the way, then screw it in until just before it touches the piston. Then clamp down the lock nut. You just want to be sure you have a LITTLE free-play so you're not applying brake pressure when you don't want to be.
          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

          • #6
            Hiya, I have an 82 xj1100, does anyone know if any or if all the front brake master cylinders from mikes works on my bike?

            Comment

            • #7
              not all master cylinders work,has to be the one for duel front brakes,or 1 front and rear in your case.
              FOXS-XS11SG

              2009 Suzuki V Strom 650,Adventure in Touring,I call her "Smooth" SW Motech engine guard,Coocase top case w/ LED brake and tail lights,20" MRA touring screen w/adjusable bracket,Grip heaters,fender ex-tender,Givi hard sidebags

              1980 XS11SG-sold
              1999 Vulcan classic-sold
              1982 XJ 650-sold

              Old is only a state of mind......John

              Comment

              • #8
                Originally posted by DamnXj View Post
                Hiya, I have an 82 xj1100, does anyone know if any or if all the front brake master cylinders from mikes works on my bike?
                You need to match bore size for the best results; going smaller or larger will change the 'feel' of the brakes and you might have issues with lever travel.
                Fast, Cheap, Reliable... Pick any two

                '78E original owner - resto project
                '78E ???? owner - Modder project FJ forks, 4-piston calipers F/R, 160/80-16 rear tire
                '82 XJ rebuild project
                '80SG restified, red SOLD
                '79F parts...
                '81H more parts...

                Other current bikes:
                '93 XL1200 Anniversary Sportster 85RWHP
                '86 XL883/1200 Chopper
                '82 XL1000 w/1450cc Buell, Baker 6-speed, in-progress project
                Cage: '13 Mustang GT/CS with a few 'custom' touches
                Yep, can't leave nuthin' alone...

                Comment

                • #9
                  Originally posted by Cuda 69 View Post
                  not all master cylinders work,has to be the one for duel front brakes,or 1 front and rear in your case.
                  Just a note on what Cuda has said here: The rear master does both the front left and rear brake work. The front only does one side on the front. Mikes does have one IIRC that is only 1mm difference in size.
                  If DamnXJ is simply replacing the front master it only needs to work on one disc. If he is to modify to accept both fronts then he would need the dual model.
                  Last edited by Rasputin; 03-25-2012, 03:00 PM. Reason: illiterate most days
                  2-79 XS1100 SF
                  2-78 XS1100 E Best bike Ever
                  80 XS 1100 SG Big bore kit but not fully running yet.
                  Couple of more parts bikes of which 2 more will live!

                  Comment

                  • #10
                    Originally posted by DamnXj View Post
                    Hiya, I have an 82 xj1100, does anyone know if any or if all the front brake master cylinders from mikes works on my bike?
                    I've got one going on ebay here a little later tonight. I converted my XJ to a dual front setup de-linked to the rear and the original working XJ M/C will be up for sale beginning at 6:00pm Pacific.
                    1970? Honda Z50... gone
                    1974? Yamaha 100 Enduro... gone
                    1974 Honda CB200... gone
                    1981 Yamaha Virago 750... gone
                    1993 Honda Shadow 1100... gone
                    2008 Honda VTX 1800F
                    1982 Yamaha XJ1100J w/850 final, Raptor ACCT
                    1979 Yamaha XS1100SF "Chewey" Raptor ACCT

                    http://www.johnsoldiron.com

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                    • #11
                      Thanks for the info! Ill try to figure out what my bore size is and compare to his selection, thanks once again!

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