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1980 GS 850G Engine Rebuild

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    #16
    you do not need to take the engine off the bike to change the head gasket or base gasket. just lift and remove head to the sides and tilt the cylinders back. just did it myself actually.

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      #17
      Doing the valve stem seals is easy but you need a compression tool. Check Mike's XS for a reasonable price if you can't find one local. http://www.mikesxs.net/mikesxs-tools...ategory_id=7.1

      Once the valves are out the seals pull straight up and out. To install the new seal, use a small socket and lightly tap it in place - go easy and take your time.

      No replacing the seals is false economy, same goes for the base gasket between the crankcase and the cylinder. There is a very good chance you will have leakage to do the job right the first time and you are ahead of the game.

      Good luck.
      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

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        #18
        When I did it all the valves scared me a little, they weren't too bad though. I didn't change the seals but I did check the clearances. I got my engine all back together, now I am waiting for the stainless bolt kit I ordered from Z1. I have to say those guys are the best. I have had nothing but success working with them.

        Overall the bike is coming back together. We sanded and sprayed the front forks last night, they look amazing. A little jingle can does wonders. Now its time to get the engine back in and fill the fluids. I can't wait to hear it run.

        The only problem I have is that I broke my left control switch last night. Does anyone have a replacement they would be interested in selling? (1980 GS850G)

        Justin

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