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'79 GS850 gasket set question

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    #1

    '79 GS850 gasket set question

    I ordered a gasket set from Cruzinimage.net for my '79 GS850 and have a question about what is included. Per the following picture, where do the circled O-rings go in the engine?

    I've searched the parts fiche and can't find them anywhere in the cylinder or head parts layout???? Are these to go on with the head gasket, around the outside studs? Are these specific to the GS850?

    I've never encountered them before, or at my advanced age, I just can't remember!

    HELP!


    And........no,......... I'm not using that base gasket!
    Last edited by 1978GS750E; Yesterday, 10:13 AM.
    Ron
    When I die, just cremate me and put me in my GS tank. That way I can go through these carbs, one more time!https://www.thegsresources.com/_forum/core/images/smilies/cool.png
    1978 GS750E - November 2017 BOTM
    1978 GS1000C - May 2021 BOTM
    1982 GS1100E - April 2024 BOTM
    1999 Honda GL1500SE
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    #2
    I suspect those go in the head gasket outer stud holes. Notice how big those holes are? With the OEM gasket, the seals are molded into the gasket.
    Ed

    To measure is to know.

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    Comment

      #3
      Originally posted by Nessism View Post
      I suspect those go in the head gasket outer stud holes. Notice how big those holes are? With the OEM gasket, the seals are molded into the gasket.
      After searching Ebay for a picture of an OEM gasket, I think you nailed it!

      I'll know more once I get it in my hands.

      Thanks Ed!
      Ron
      When I die, just cremate me and put me in my GS tank. That way I can go through these carbs, one more time!https://www.thegsresources.com/_forum/core/images/smilies/cool.png
      1978 GS750E - November 2017 BOTM
      1978 GS1000C - May 2021 BOTM
      1982 GS1100E - April 2024 BOTM
      1999 Honda GL1500SE

      Comment

        #4
        Actually, I think the 4 copper washers next to the O rings go on the corner studs
        1978 GS 1000 (since new)
        1979 GS 1000 (The Fridge, superbike replica project)
        1978 GS 1000 (parts)
        1981 GS 850 (anyone want a project?)
        1981 GPZ 550 (backroad screamer)
        1970 450 Mk IIID (THUMP!)
        2007 DRz 400S
        1999 ATK 490ES
        1994 DR 350SES

        Comment

          #5
          Originally posted by Big T View Post
          Actually, I think the 4 copper washers next to the O rings go on the corner studs
          Yes, the copper washers go under the chrome nuts on the 4 outer studs on top of the head.

          I believe the o-rings go into the openings for the 4 outer studs, "inside" the head gasket openings, if that makes any sense?
          Ron
          When I die, just cremate me and put me in my GS tank. That way I can go through these carbs, one more time!https://www.thegsresources.com/_forum/core/images/smilies/cool.png
          1978 GS750E - November 2017 BOTM
          1978 GS1000C - May 2021 BOTM
          1982 GS1100E - April 2024 BOTM
          1999 Honda GL1500SE
          • Likes 1

          Comment

            #6
            Originally posted by 1978GS750E View Post

            Yes, the copper washers go under the chrome nuts on the 4 outer studs on top of the head.

            I believe the o-rings go into the openings for the 4 outer studs, "inside" the head gasket openings, if that makes any sense?
            Yes, this is correct. Those o-rings go in the corners of the head gasket.

            It's basically how the gaskets worked originally. There was a separate seal or o-ring here.


            Later head gaskets (Suzuki changed the part numbers a few times) incorporated seals at these corners into the head gasket itself. Also, that rectangular o-ring for the center tunnel is not used with later head gaskets; the head gasket itself seals this area.

            Either arrangement seems to work about the same, but there's more juggling and anxiety involved in making sure these o-rings stay in the right place.
            1983 GS850G, Cosmos Blue.
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