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GS1000 with GS1100G top end

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    GS1000 with GS1100G top end

    Hi,

    I have a question...

    I know a cylinder head of a GS1100G fits on my GS1000C engine but does the complete top end fit as well?(cylinder, pistons, etc...)

    If i want to use the pistons from the GS1100 can I use the whole block or do i need to bore my GS1000 block?

    I already have the GS1100G top end collecting dust in my garage...

    Thank you,

    Marc
    https://www.thegsresources.com/_foru...ie_twisted.gif AIR COOLED MONSTERS NEVER DIE https://www.thegsresources.com/_foru...ie_twisted.gif
    1978 GS1000C X2
    1978 GS1000E X2
    1979 GS1000S
    1979 gs1000
    1983 gs400e

    #2
    I'm pretty sure it's a direct bolt on: cylinders, pistons, head, etc. The later 1100G head is reputed to flow the best - the one with D shaped exhaust ports. Sounds like a fun project.
    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


      #3
      thank you!
      https://www.thegsresources.com/_foru...ie_twisted.gif AIR COOLED MONSTERS NEVER DIE https://www.thegsresources.com/_foru...ie_twisted.gif
      1978 GS1000C X2
      1978 GS1000E X2
      1979 GS1000S
      1979 gs1000
      1983 gs400e

      Comment


        #4
        Marc,
        Do you ever follow up and trying sliding your GS1100G cylinders into the GS1000 engine cases? Curious minds want to know . . . ?

        Steve
        Steve

        1979 GS1000E (45 Yrs), 1981 GPz550 (11 Yrs)

        Comment


          #5
          I didnt take or find time to check that, i have a 1100g empty cylinder block that i can take some mesurement.
          i'm planning to use the 1100g block with 1100 wiseco pistons.
          APE recommend to use the 11002v block on a 10002v with 1176 pistons.
          I only have a 1100g engine in parts.My 1000 engine is still in the bike.
          I have 2 gk spare engine and a 1000 engine laying here.i can probably check that in january.

          Steve,do you have a gs1000 2v empty block to compare mesurement?
          marc
          https://www.thegsresources.com/_foru...ie_twisted.gif AIR COOLED MONSTERS NEVER DIE https://www.thegsresources.com/_foru...ie_twisted.gif
          1978 GS1000C X2
          1978 GS1000E X2
          1979 GS1000S
          1979 gs1000
          1983 gs400e

          Comment


            #6
            Going cross-eye with a ruler my 1000st liners measure 75mm across. Maybe a smidgeon more. no more than that, have to borrow neighbours verniers when he wakes

            Comment


              #7
              Originally posted by kochic View Post
              I didnt take or find time to check that, i have a 1100g empty cylinder block that i can take some mesurement.
              i'm planning to use the 1100g block with 1100 wiseco pistons.
              APE recommend to use the 11002v block on a 10002v with 1176 pistons.
              I only have a 1100g engine in parts.My 1000 engine is still in the bike.
              I have 2 gk spare engine and a 1000 engine laying here.i can probably check that in january.

              Steve,do you have a gs1000 2v empty block to compare mesurement?
              marc
              Marc,
              I have a 1100g cylinder block too which I would like to use them with a set of Wiseco 1100 (73.5mm) pistons. Tkent02 has a 1000E block lying around and I was suppose to measure the height today of the 1000E block and compare it to the 1100G block. I already measured the outside diameter of 1100G cylinder liners: 78.18mm. My GS1000 is still assembled so I can not measure the engine case sleeve diameter.

              Perhaps someone else has a dismanted gs1000 2V engine and can take a quick measurement with a digital caliper. I believe the 1100G cylinder block will not slide right into the GS1000 engine case though. So if someone has a GS1000 engine broken down to the engine cases and has a little extra time, Marc & I would appreciate you responding.
              Steve
              Last edited by srsupertrap; 12-23-2010, 07:40 PM.
              Steve

              1979 GS1000E (45 Yrs), 1981 GPz550 (11 Yrs)

              Comment


                #8
                see above for 1000 liner measurment. Its no more than 75.5 and way way smaller than 78, Update with actual readings soon (maybe)

                Comment


                  #9
                  Kochic, I just walked inside from working on the barn and saw this so,
                  I threw an '82 1100 cylinder on a '79 1000 block for you.
                  I am currently downloading a few quick pic's.
                  What exactly do you want pictures of or measurements of?

                  Edit, here are the pic's:







                  Daniel
                  Last edited by Guest; 12-23-2010, 09:22 PM.

                  Comment


                    #10
                    hi Dan,
                    thank you,
                    Your PM box is full.
                    Marc
                    https://www.thegsresources.com/_foru...ie_twisted.gif AIR COOLED MONSTERS NEVER DIE https://www.thegsresources.com/_foru...ie_twisted.gif
                    1978 GS1000C X2
                    1978 GS1000E X2
                    1979 GS1000S
                    1979 gs1000
                    1983 gs400e

                    Comment


                      #11
                      I cleaned out some room... fire away!
                      Busy downloading some pic's of the Barn progress.

                      Daniel
                      Last edited by Guest; 12-23-2010, 10:58 PM.

                      Comment


                        #12
                        Originally posted by 7981GS View Post
                        Kochic, I just walked inside from working on the barn and saw this so,
                        I threw an '82 1100 cylinder on a '79 1000 block for you.
                        I am currently downloading a few quick pic's.
                        What exactly do you want pictures of or measurements of?

                        Edit, here are the pic's:







                        Daniel
                        Daniel,
                        Tkent02 & I tried the same thing earlier tonight, we slipped my 84 GS1100G cylinder onto a GS1000 block but we could not get the cylinder to sit flush on the GS1000 block . . . something holding it up. Pulled the GS1100 cylinder off several times and found score marks on the outside of the GS1100 cylinder liners indicating line contact with the GS1000 engine cases. Looks like a die grinder or dremmel would be needed to make it sit flush.

                        Looking at your pictures you have about the same amount of gap that Tom & I found. Were you able to get the 1100G cylinder to sit flush on the GS1000 block? Next question could you try rotating crankshaft a full cycle to see if the crank throws contact the cylinder liners

                        Thanks,
                        Steve
                        Steve

                        1979 GS1000E (45 Yrs), 1981 GPz550 (11 Yrs)

                        Comment


                          #13
                          Let me go take a closer look, as I said, all I did was throw one on...

                          Daniel

                          Comment


                            #14
                            Originally posted by 7981GS View Post
                            Let me go take a closer look, as I said, all I did was throw one on...

                            Daniel
                            No rush, anyway it's close to X-mas and everyone will think we are nothing but a bunch of gear heads
                            Steve

                            1979 GS1000E (45 Yrs), 1981 GPz550 (11 Yrs)

                            Comment


                              #15
                              But, but, but... I am way beyond the common gearhead!
                              Synthetic oil runs through my veins.
                              Photo's are downloading...

                              Start with a not so clean block deck:


                              Add .005 Cometic Copper gasket on ready to go 1135 (74mm bore) cylinder:


                              Install and just tap into place:




                              The crank throws clear by about .25" :


                              Turn over by hand and the only thing that slightly hits/randomly is the transmission drive gear:


                              I would think that all one has to do is ever so slightly grind a concave notch in the sleeve on #2 cylinder.
                              Way below the lowest point of the piston skirt.
                              Perhaps none at all with a factory .020 base gasket.


                              Daniel
                              Last edited by Guest; 12-24-2010, 01:52 AM.

                              Comment

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