Can I make myself a breather gasket, or do I have to buy one?

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  • WilliamGLX81
    • Feb 2026

    #1

    Can I make myself a breather gasket, or do I have to buy one?

    81 GS650GL

    I got excited and wanted to cut myself a new breather gasket, since mine is leaking kind of badly and I have the valve cover off. I did some searches, and I'm sure I can cut some gaskets (I cut one for the cam chain tensioner, which was also leaking), but don't know if this material will work for the breather.

    On removal... ahem, destruction of the old gasket (I made sure that bikebandit had one I could buy if necessary), I found that there are two layers in the middle of the breather gasket. It looked like a cross between paper and leather (maybe a cereal box?).

    Do I have to buy this gasket (and wait for shipping) or can I use the one I cut already? Can I just make myself two layers, or is it special somehow?

    Cheers
  • Guest

    #2
    Make your own. Should work fine. I've never seen 2 gaskets under a breather cover, maybe a quick "fix" from the PO?

    Comment

    • Agemax
      Forum Guru
      • Apr 2008
      • 8371
      • plymouth uk

      #3
      you should find out why your breather cover is leaking oil badly!!!!!!! there should only be oil mist and fumes circulating up there, not lots of oil. is the mesh fitted to trap any oil mist?

      if you have a lot of oil floating around way up there then you could have some engine problems.
      1978 GS1085.

      Just remember, an opinion without 3.14 is just an onion!

      Comment

      • tom203
        Forum Guru
        Past Site Supporter
        • Aug 2010
        • 8925
        • Norway,Maine

        #4
        Originally posted by Agemax
        you should find out why your breather cover is leaking oil badly!!!!!!! there should only be oil mist and fumes circulating up there, not lots of oil. is the mesh fitted to trap any oil mist?

        if you have a lot of oil floating around way up there then you could have some engine problems.
        Yeah, there should be a slight mist- mine showed very little oil staining at 42k
        1981 gs650L

        "We are all born ignorant, but you have to work hard to stay stupid" Ben Franklin

        Comment

        • WilliamGLX81

          #5
          I think the "bad" leak was an exaggeration. It just looks bad, but it's obviously been weeping oil for a while. I noticed that my valve cover bolts were none too tight either, and I think that may have been leaking some too.

          Comment

          • blowerbike
            Forum Guru
            GSResource Superstar
            • Aug 2008
            • 7057
            • Ohio Closer to KY Than Cleveland

            #6
            the gaskets are thick and leather like.
            i doubt you can find a similar material to make one.
            also...it is common to break an ear off the cover when tightening if the gasket squeezes out on the corner.

            Comment

            • WilliamGLX81

              #7
              The gasket appeared to be about 1mm or more thick. Much thicker than this 1/32 or 1/64 gasket material I have. I'll try to post a photo of the gasket's two layers.

              Comment

              • blowerbike
                Forum Guru
                GSResource Superstar
                • Aug 2008
                • 7057
                • Ohio Closer to KY Than Cleveland

                #8
                i'm just saying on the GS's...they have a thick gasket for the breather cover.
                once it get's oil on it...it swell's up some what.

                Comment

                • Nessism
                  Forum LongTimer
                  GSResource Superstar
                  Past Site Supporter
                  Super Site Supporter
                  • Mar 2006
                  • 35790
                  • Torrance, CA

                  #9
                  Autoparts stores sell gasket material sheet. Get the stuff suitable for oil and fuel contact - looks and feels sort of rubberized. A paper hole punch is the perfect size for making the screw holes. I've made a bunch of gaskets, including those for a stator cover and carb floatbowl, and it's worked out well each time.
                  Last edited by Nessism; 08-02-2013, 03:15 PM.
                  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

                  • Guest

                    #10
                    I tried a valve cover gasket from Realgaskets which is made of silicone. Bad day at the race track. Tried to seal it 3 times... no good. Bought one from Z1 and have had no problems. I guess I can use the $37.00 silicone one as a template if I need to. Really disappointed in the silicone one...
                    Curt

                    Comment

                    • Guest

                      #11
                      Originally posted by WilliamGLX81
                      81 GS650GL

                      I got excited and wanted to cut myself a new breather gasket, since mine is leaking kind of badly and I have the valve cover off. I did some searches, and I'm sure I can cut some gaskets (I cut one for the cam chain tensioner, which was also leaking), but don't know if this material will work for the breather.

                      On removal... ahem, destruction of the old gasket (I made sure that bikebandit had one I could buy if necessary), I found that there are two layers in the middle of the breather gasket. It looked like a cross between paper and leather (maybe a cereal box?).

                      Do I have to buy this gasket (and wait for shipping) or can I use the one I cut already? Can I just make myself two layers, or is it special somehow?

                      Cheers
                      I may have a gasket for you. I was sent the wrong one and they told me to keep it and sent me the right one. Your gasket looks like a T right? http://www.boulevardsuzuki.com/fiche...1981&fveh=2128
                      Last edited by Guest; 08-02-2013, 04:38 PM.

                      Comment

                      • Allie
                        Forum Guru
                        • May 2010
                        • 7682
                        • New Jersey

                        #12


                        Thick gasket paper works just fine, it's not that choosy and application.
                        "Men will never be free until Mark learns to do The Twist."

                        -Denis D'shaker

                        79 GS750N

                        Comment

                        • Guest

                          #13
                          Originally posted by Allie


                          Thick gasket paper works just fine, it's not that choosy and application.
                          Ha ha
                          Nurse Ratchet (sp?)
                          One of my Favorite movies of all time
                          Sorry for the hijack

                          Comment

                          • Allie
                            Forum Guru
                            • May 2010
                            • 7682
                            • New Jersey

                            #14
                            I believe it's spelled 'Ratched'. It's... medication time!
                            "Men will never be free until Mark learns to do The Twist."

                            -Denis D'shaker

                            79 GS750N

                            Comment

                            • WilliamGLX81

                              #15
                              Originally posted by mrbill5491
                              I may have a gasket for you. I was sent the wrong one and they told me to keep it and sent me the right one. Your gasket looks like a T right? http://www.boulevardsuzuki.com/fiche...1981&fveh=2128
                              Yup, that's the one. Sort of like a T, with two big holes right next to the upper bolt-holes and two holes on the center line for the JIS head bolts. #9 on that fiche. I'd be happy to take it off your hands for the cost of postage.

                              Comment

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