1982 Seca XJ750, ZRX1200 has company now.

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  • DEEBS11
    XS-XJ Guru
    • Feb 2023
    • 1649
    • Connecticut

    #31

    Comment

    • Bonz
      XS-XJ Super Guru
      • Apr 2008
      • 3231
      • Palmer Lake, Colorado

      #32
      Thanks, will hold off on buying something overseas with the tariffs and crap that's going on for the time being. I don't see why a long thin fabric or old sheet oiled real well and pulled through then stuffed back in really tight won't accomplish the same thing. My wife won't be happy but there is an old sheet that she won't know is missing, lol.
      Howard

      ZRX1200

      BTW, ZRX carbs have the same spacing as the XS11... http://www.xs11.com/forum/showthread.php?t=35462

      Comment

      • DEEBS11
        XS-XJ Guru
        • Feb 2023
        • 1649
        • Connecticut

        #33
        or just a long rubber tube like fuel line with a wire leader.

        Comment

        • Socer4m
          XStremely XSive
          • Sep 2020
          • 254
          • san diego

          #34
          Howdy Bonz,,,,,I wouldnt recommend putting any cloth in the passage to block off, as it is a high vacuum inlet port all the way through the carb air inlet ports,,,,,if anything gets sucked in it could be a pain in the assss to remedy. The bike will run much smoother with a sync done with the YICS tool, or the YiCS eliminator but will run decent without the tool, provided the carbs are setup correct. Maybe a gas line the just barely slides like DEEBS suggested, not sure if that will block off the complete air inlet along with the carb air inlet....just recommend the YICS tooll for best results, after my long term 40 plus years of having an XJ1100,,,,maxims rock, just harder to get certain parts as it was a one off of the xs1100.....Mike in San DIego and Pa......

          Comment

          • Bonz
            XS-XJ Super Guru
            • Apr 2008
            • 3231
            • Palmer Lake, Colorado

            #35
            Thanks Mike, good food for thought. The reading I've done suggests pulling the long, narrow width cloth through (wet well with atf or oil) and stuffing it back in so it's packed tight the full length of the passage. The tightness of the cloth not just the diameter of the passage, but the length of the passage, seems to keep it from getting pulled in. If it was too loose it definitely wouldn't be good. Once I see how it's running on the street I'll decide yay or nay on the tool.

            I haven't read any bad stories about making it worse by sync'ing w/o the tool, just that it won't be as good as with the tool. Is that pretty much the case?
            Howard

            ZRX1200

            BTW, ZRX carbs have the same spacing as the XS11... http://www.xs11.com/forum/showthread.php?t=35462

            Comment

            • Socer4m
              XStremely XSive
              • Sep 2020
              • 254
              • san diego

              #36
              HI Bonz,,,,way back on the site there was a picture that detailed the passages for the YICS,,,only three spots need to be closed off,,check out the rubber on the YICS TOOL,,by closing off the rest of the inlet could keep it from synching correctly by varying the inlet air,,,,,so,,,would recommend the tool,,,,but without out it it will run at 90-95 percent if all else is good. If you are keeping the bike I would suggest getting a YICS TOOL, as it is good to synch pretty regularly to keep the xj in peak performance, Mike in S.DIego and PA

              Comment

              • Bonz
                XS-XJ Super Guru
                • Apr 2008
                • 3231
                • Palmer Lake, Colorado

                #37
                Understood on the 3 spots. Thought... If they are blocked individually by the tool, the rest of it is dead air space around the small margin left by the diameter of the tool and would not affect anything, IMO. If it's blocked fully by any means, it would seem to my thinking to be no different with respect to the sync than blocking them with the tool or not having the passageway in the first place, a la the XS1100. Just thinking out loud.
                Howard

                ZRX1200

                BTW, ZRX carbs have the same spacing as the XS11... http://www.xs11.com/forum/showthread.php?t=35462

                Comment

                • bikerphil
                  Master of XSology
                  • Jan 2008
                  • 8737
                  • South Flori-DUH

                  #38
                  You know, a gun cleaning brush works excellent for cleaning that tunnel out. There are only four holes in that tunnel that need to be blocked. I don't think anything can get caught on them. I wouldn't be afraid to attempt the oily rag and ramrod method.
                  Some of these XJ's have the plug on both sides, that may make it easier. I have read of people doing it like this with success.
                  Last edited by bikerphil; 09-09-2025, 10:00 PM.
                  2H7 (79) owned since '89
                  3H3 owned since '06

                  "If it ain't broke, modify it"

                  Comment

                  • Bonz
                    XS-XJ Super Guru
                    • Apr 2008
                    • 3231
                    • Palmer Lake, Colorado

                    #39
                    You read my mind, I was planning on brushing it out with a bore brush and Hoppes #9. I'll sync them without doing anything to the passages with respect to blocking the ports, and see what I get. From there, decide if seat of the pants and experience tells me it's dramatically off.
                    Howard

                    ZRX1200

                    BTW, ZRX carbs have the same spacing as the XS11... http://www.xs11.com/forum/showthread.php?t=35462

                    Comment

                    • DEEBS11
                      XS-XJ Guru
                      • Feb 2023
                      • 1649
                      • Connecticut

                      #40
                      Guys, I made up this contraption after a trip to the hardware store and it worked great on mine. I gave it to the guy when I sold the bike.


                      Click image for larger version

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                      Comment

                      • Bonz
                        XS-XJ Super Guru
                        • Apr 2008
                        • 3231
                        • Palmer Lake, Colorado

                        #41
                        Saw that when you posted it on the second page of the thread. If I make one, that's what I'm going with.
                        Howard

                        ZRX1200

                        BTW, ZRX carbs have the same spacing as the XS11... http://www.xs11.com/forum/showthread.php?t=35462

                        Comment

                        • Bonz
                          XS-XJ Super Guru
                          • Apr 2008
                          • 3231
                          • Palmer Lake, Colorado

                          #42
                          Front brake system back in working order. That remote master cylinder under the gauges next to the steering head operated by 12 or 16-in cable from the lever on the bar that Yamaha designed and used is one of the top 10 most stupid engineering workarounds to then allow plastic covers on the bars to give it a streamlined look. Alas, in the grand scheme it wasn't that difficult to work with. The cable going to the master cylinder takes away some of the direct feel however I doubt it will have any negative effect on overall braking performance in terms of stopping distance.

                          Float needles I used aren't sealing well. They are maybe a millimeter taller from tip to end of the spring plunger but when getting the fuel level set correctly in the bowls, the floats are at parallel or even a bit tilted downward at the tip of the float opposite the hinge. I think there's some binding going on with the angle.

                          Ordered some kits off eBay to get float needles, they arrived today. Won't get them on this weekend. However it's coming along. Once I stop the carbs from leaking fuel into air box it'll be ready for its maiden run in Colorado. Last registration was 8/07 so it hasn't seen the road in a while.

                          While I'm at it, I was happy with Shinko tires on my XS11 when I owned it. Looks like they have tires in the sizes I'll need in one or two of their models. I do not like the D404, they wore quickly and the front end would push in higher speed sweepers on the 80SG. Anyone have something they have had success with to recommend in a reasonable price range other than the Shinko tires?
                          Last edited by Bonz; 09-13-2025, 07:11 PM.
                          Howard

                          ZRX1200

                          BTW, ZRX carbs have the same spacing as the XS11... http://www.xs11.com/forum/showthread.php?t=35462

                          Comment

                          • LAB3
                            XSive Maximus
                            • May 2022
                            • 723
                            • Traveling the U.S. with no permanent address

                            #43
                            In my experience there's nothing better than the Shinko 230 in the low end of the price range. The Skinko 712 is a couple of bucks cheaper and you'll get about 5-750 more miles out of them but you'll lose a lot of confidence in the rain, on bridge grates and scarred pavement.

                            Next notch up price wise would be the Bridgestone Battle-axe and they WILL feel better planted all around, expect about the same mileage wear wise as the Shinkos.
                            1980 XS1100G

                            Intelligent people discuss ideas, average people discuss events, petty people discuss other people.

                            Comment

                            • bikerphil
                              Master of XSology
                              • Jan 2008
                              • 8737
                              • South Flori-DUH

                              #44
                              +1 on the 230's, Z rated and much better than the 712's.
                              2H7 (79) owned since '89
                              3H3 owned since '06

                              "If it ain't broke, modify it"

                              Comment

                              • Bonz
                                XS-XJ Super Guru
                                • Apr 2008
                                • 3231
                                • Palmer Lake, Colorado

                                #45
                                Thanks guys. Had Shinko 230's on the 80SG and they were good. Ordered the 230's for the 82 Seca just now.
                                Howard

                                ZRX1200

                                BTW, ZRX carbs have the same spacing as the XS11... http://www.xs11.com/forum/showthread.php?t=35462

                                Comment

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