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Vent passage drilled out?

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  • #1

    Vent passage drilled out?

    Vent passage on the carbs going jn Wes's bike have been opened up. I'm not sure why they would do this. Looks like it just vents the bowl to open air looking at the carb body, so I don't think it will hurt anything but I also don't see any benefits.

    ​​​​​​ IMG_20211111_150124.jpg

    Anyone know why someone would do this?

    I can't figure it out unless they where looking for the air screw and got lost. Is this some old school magic that got lost with time, a faded trend, a mistake, anyone?


    Hordpower squirrelman Dmitry nt650hawk Crash

    ​​​​​​Just when you think you have seen it all you realize you haven't.
    Don't spend money and buy, spend time and learn.
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    • #2
      no problem with that but somebody didn't know enuff to leave things alone, just like the fool who ruined these 2 emulsion tubes by radically over-tightening (good one in the middle)........

      9-26-21 new c 006.jpg
      "It's only getting worse."


      MY rides: '97 VFR750, '90 Red Hawk, '88 Blue/Black Hawk, '86 RWB VFR700 (3), '86 Yamaha Radian, '90 VTR250, '89 VTR250 (2), '73 CB125, '66 Yamaha YL-1

      Sold: '86 FJ1200, '92 ZX-7, '90 Radian, '73 CB750, '89 all-white Hawk, '88 blue Hawk, '86 FZ600, '86 Yam Fazer 700 , '89 VTR250, '87 VFR700F2, '86 VFR700F.

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        • #3
          never seen that done. if this is tied to the diaphragm vent what is the difference if the black tube is opened to the elements???
          Gino
          Chain Roller

          NEVER UNDERESTIMATE THE PREDICTABILITY OF STUPIDITY

          2012 CCS LRRS ULSB Champion
          2012 CCS LRRS P89 Champion
          2008 CCS ULSB National Champion
          LRRS HAWK GT Racer CCS Expert #929
          ECK RACING
            👍 1

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            • #4
              Originally Posted by nt650hawk
              never seen that done. if this is tied to the diaphragm vent what is the difference if the black tube is opened to the elements???
              Looks like the bowl vent not diaphragm. It's to those two small tubes that come up the top that I always think are brass then I see a set of carbs and the are steel and I think "Mandela effect" and go on with my day..
              Don't spend money and buy, spend time and learn.

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                • #5
                  I think I might JB Weld or epoxy a press-fit nipple (that doesn't block that passage just inside) so I could run a short hose to point down.
                  "I couldn't afford NOT to buy it!"

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                    • #6
                      Is it maybe a top secret fix to the 'vent lines causing surging' problem?

                      If so, that would be pretty clever.

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                        • #7
                          I started to do this years ago thinking that it was the mixture screw. . I didn't get too far before I realized it wasn't. I plugged the tiny hole I had made with JB Weld.
                          Brian - Richland, WA
                          1991 Hawk GT

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                            • #8
                              with the hole open like that expect a gas smell in your garage.
                              "It's only getting worse."


                              MY rides: '97 VFR750, '90 Red Hawk, '88 Blue/Black Hawk, '86 RWB VFR700 (3), '86 Yamaha Radian, '90 VTR250, '89 VTR250 (2), '73 CB125, '66 Yamaha YL-1

                              Sold: '86 FJ1200, '92 ZX-7, '90 Radian, '73 CB750, '89 all-white Hawk, '88 blue Hawk, '86 FZ600, '86 Yam Fazer 700 , '89 VTR250, '87 VFR700F2, '86 VFR700F.

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                                • #9
                                  Originally Posted by bk94si
                                  I started to do this years ago thinking that it was the mixture screw. . I didn't get too far before I realized it wasn't. I plugged the tiny hole I had made with JB Weld.
                                  That was my first guess when I saw it. Someone missed looking for the screw.
                                  Don't spend money and buy, spend time and learn.
                                    👍 1

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