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  • XJ1100 Head

    Does anyone know if I can use an 82 head and cams on an 80 engine? My head has broken and stripped out exhaust studs in it and a few of the outside valve cover bolts are stripped.
    1979 XS1100SF with a Jardine 4 into 1, ZRX 1200 carbs, 82 XJ rear air shocks, ACCT
    SOLD - 1980 XS1100SG with a Mac 4 into 1, ZRX 1200 carbs, round 160 speedo, 82 XJ rear air shocks, ACCT

  • #2
    Doesn't the '82 have YICS? I'd assume you would have to plug those ports.
    1979 XS1100F
    2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

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    • #3
      Correct. It'll work fine, you'll just have to plug the YICS ports off on the back side of the head. I've got pics of it and the way I did it, if you don't know what we're talking about, but I'm headed to the airport to fly to Grand Cayman. I can post pics this evening if needed.
      Try your hardest to be the kind of person your dog thinks you are.

      You can live to be 100, as long as you give up everything that would make you want to live to be 100!

      Current bikes:
      '06 Suzuki DR650
      *'82 XJ1100 with the 1179 kit. "Mad Maxim"
      '82 XJ1100 Completely stock fixer-upper
      '82 XJ1100 Bagger fixer-upper
      '82 XJ1100 Motor/frame and lots of boxes of parts
      '82 XJ1100 Parts bike
      '81 XS1100 Special
      '81 YZ250
      '80 XS850 Special
      '80 XR100
      *Crashed/Totalled, still own

      Comment


      • #4
        pretty unlikely that an XJ head fits on an XS engine.
        Steven


        1981 XS 1100 LH
        1979 XS 1100 SF

        Comment


        • #5
          I have seen the pics of Tod's head..well..XJ11 engine head, with the bolts in it he describes. The engines on the XS1100 and the XJ1100 are nearly identical and the head will bolt straight on like any other XS11 head.

          The method Tod used was to thread the YICS holes and put a set screw in with red locktite IIRC which are on the engine side of the head. Basically the YICS ports are in an "apron" that extends toward the carb side of the engine on the XJ heads. The holes are passages going to each intake port. Plugging off these holes makes the head the same as an XS11.

          HERE is the post where he explains it and shows what he used.
          Life is what happens while your planning everything else!

          When your work speaks for itself, don't interrupt.

          81 XS1100 Special - Humpty Dumpty
          80 XS1100 Special - Project Resurrection


          Previously owned
          93 GSX600F
          80 XS1100 Special - Ruby
          81 XS1100 Special
          81 CB750 C
          80 CB750 C
          78 XS750

          Comment


          • #6
            Originally posted by Gallaecus View Post
            pretty unlikely that an XJ head fits on an XS engine.

            The XJ1100 head will fit on any XS1100 motor, but you'll lose compression numbers if you put it on a 78/79 XS verses an 80/81 XS.

            You should use the head gasket from the XS. You can use the one from the XJ, but you'll want to cut off the little extra section in back that covers the YICS ports.

            DGSXER, Thank you for finding that link for me. Sitting here in the airport in Charlotte, NC. Next stop.... TROPICAL! You all have a really good day at work today!
            Try your hardest to be the kind of person your dog thinks you are.

            You can live to be 100, as long as you give up everything that would make you want to live to be 100!

            Current bikes:
            '06 Suzuki DR650
            *'82 XJ1100 with the 1179 kit. "Mad Maxim"
            '82 XJ1100 Completely stock fixer-upper
            '82 XJ1100 Bagger fixer-upper
            '82 XJ1100 Motor/frame and lots of boxes of parts
            '82 XJ1100 Parts bike
            '81 XS1100 Special
            '81 YZ250
            '80 XS850 Special
            '80 XR100
            *Crashed/Totalled, still own

            Comment


            • #7
              No Problem Tod. I know what it is like to try to do this in the airport.

              And BTW, since I am done working today, I hope your plane is delayed a few hours just for that comment. At least your not in ATL (short for Another Terminal Layover).
              Life is what happens while your planning everything else!

              When your work speaks for itself, don't interrupt.

              81 XS1100 Special - Humpty Dumpty
              80 XS1100 Special - Project Resurrection


              Previously owned
              93 GSX600F
              80 XS1100 Special - Ruby
              81 XS1100 Special
              81 CB750 C
              80 CB750 C
              78 XS750

              Comment


              • #8
                well, I have this head gasket,
                part number 10M-11181-00
                that I believe is for an xj1100
                but when I thought about using it for the XS
                it seemed quite different.



                Steven


                1981 XS 1100 LH
                1979 XS 1100 SF

                Comment


                • #9
                  Cut it down at the red lines and it will be identical to an XS11 head gasket.

                  2H7 (79) owned since '89
                  3H3 owned since '06

                  "If it ain't broke, modify it"

                  Comment


                  • #10
                    You might be able to use that. Worse-case scenario, trim it up.
                    1979 XS1100F
                    2H9 Mod, Truck-Lite LED Headlight, TECHNA-FIT S/S Brake Lines, Rear Air Shocks, TKAT Fork Brace, Dyna DC-I Coils, TC Fuse Block, Barnett HD Clutch Springs, Superbike Handlebars, V-Star 650 ACCT, NGK Irridium Plugs, OEM Exhaust. CNC-Cut 2nd Gear Dogs; Ported/Milled Head; Modded Airbox: 8x8 Wix Panel Filter; #137.5 Main Jet, Viper Yellow Paint, Michelin Pilot Activ F/R, Interstate AGM Battery, 14MM MC, Maier Fairing, Cree LED Fog Lights.

                    Comment


                    • #11
                      Yup.. What Phil showed you is what I was saying earlier about trimming off those YICS sections of the gasket, and then it's the same as an XS.


                      Grand Cayman is still here. No late planes... Warm, breezy... And yes, this is jacking with me. The steering wheel is on the wrong side, the turn signal is on the wrong side, I'm driving on the wrong side of the road, and you have to watch out for frikkin iguana crossing!? Back to the beach to drink for me! : )




                      Try your hardest to be the kind of person your dog thinks you are.

                      You can live to be 100, as long as you give up everything that would make you want to live to be 100!

                      Current bikes:
                      '06 Suzuki DR650
                      *'82 XJ1100 with the 1179 kit. "Mad Maxim"
                      '82 XJ1100 Completely stock fixer-upper
                      '82 XJ1100 Bagger fixer-upper
                      '82 XJ1100 Motor/frame and lots of boxes of parts
                      '82 XJ1100 Parts bike
                      '81 XS1100 Special
                      '81 YZ250
                      '80 XS850 Special
                      '80 XR100
                      *Crashed/Totalled, still own

                      Comment

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