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Cracked oil pan gs400...options?

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    #1

    Cracked oil pan gs400...options?

    I found the reason for a small leak in my 78 gs400... the pan is cracked right near where the drain plug is so the plug doesn't tighten correctly.

    The way I see it, I have to get another motor if I don't want a leak. You can't weld it and jb weld only works for so long. Am I right?


    If I get another motor, what are my options?
    - gs400 motor obviously
    - 450?
    - twin 500?

    I need something that will pretty much bolt in with little fab work. What do you think?
    Tags: None
    #2
    Does the 400 not have a separate oil pan?

    Most of the GS series has an oil pan that bolts on to the bottom of the engine cases. It would be far easier to just replace the pan, not the whole engine. 8-[

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    Comment

      #3
      Pretty simple job to change a sump cover - assuming the bike has one (450 does). Be careful of the exhaust pipe header bolts though since they like to snap off - you might want to soak them down for a couple of days with penetrating oil before attacking them with a wrench.
      Last edited by Nessism; 05-30-2008, 05:40 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

        #4
        It does not have a sepparate pan...my brother (who owned the bike before me) had checked into that.

        Comment

          #5
          Originally posted by khardrunner14 View Post
          I found the reason for a small leak in my 78 gs400... the pan is cracked right near where the drain plug is so the plug doesn't tighten correctly.

          The way I see it, I have to get another motor if I don't want a leak. You can't weld it and jb weld only works for so long. Am I right?
          \


          Why can't it be welded? Have a qualified welder check it out. maybe you'll be surprised.

          Comment

            #6
            Yes try and get it welded by soneone who can work in aluminum alloys.

            odd crankcase having no oil pan

            1978 SUZUKI GS400C - CRANKCASE
            http://alpha-sports.com/spst/1978%20GS400/15.htm

            Comment

              #7
              So far no luck with the welding...I'll check on that more.

              What are my motor options if I can't get it welded....what fits?

              Comment

                #8
                just one possible option. may or may not work out, but I just did a quick search and there is a tech school in Scranton, PA that has a welding program, there may be others too. with it being a school you may be able to get it done for close to nothing to give a student some practical experience.

                Career Technology Center of Lackawanna
                County
                3201 Rockwell Ave.
                Scranton, PA 18508
                570-346-8471
                FAX: 570-342-4251
                www.ctc.tec.pa.us/

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