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Header pipe stud NUTS ??

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  • #1

    Header pipe stud NUTS ??

    'got on the fwy this morning just as the sun was coming up and just went from 4th to 5th gear and my exhaust got REAL loud
    then something hit my left foot...
    I looked back in time to see one of my headers bouncing down the road...
    I shut the engine off, pulled over, and noticed my #2 cylinder header GONE

    'walked back and fortunately the header was just scratched up a little, but could be used again. 'had to call a friend with a trailer to help me get the bike back to the shop.

    MY QUESTION: *where* can you find the Header pipe stud NUTS ?? both were gone and that's why the header came off...
    Does Bike Bandit or even Yamaha sell these? the bike is my only mode of transportation right now and I am stuck at the shop without it...
    __________________
    Ron Veil
    <Ron_Veil@yahoo.com>

    1980 XS1100SG
    Tags: None
  • #2
    Check with Andreas, he likely has a bucket full of them.
    Nice day, if it doesn't rain...

    '05 ST1300
    '83 502/502 Monte Carlo for sale/trade

    Comment

    • #3
      I just went to the hardware store and got some regular stainless nuts. I think there metric 8x 1.25 but thats from memory so you should take one of your nuts with you to match up the threads.

      They aren't the original style but who's going to notice?
      1979 xs1100 Special -
      Stock air box/K&N Filter, MAC 4-2 exhaust, Bad-Boy Air horn, TC fuse box, Windshield, Soft bags, Vetter Fairing, Blinkers->Run/Turn/Brake Lights, Headlight Modulator, hard wire GPS power

      Short Stack - 1981 xs1100 Standard - lowered for SWMBO.

      Originally posted by fredintoon
      Goes like a train, corners like a cow, shifts like a Russian tractor, drinks like a fish, you are gonna love it.
      My Bike:
      [link is broken]

      Comment

      • #4
        Sorry to hear of your misfortune. I guess we all need to check our exhaust header nuts to make sure they're tight. Curious. Even if the nuts fall off, the clamp should hold the header on. Was this on the stock system? It would leak and be really loud but should still stay on. I can see where it would fall off on my Jardine 4 to 1 system because it's just an Interference fit; no clamp to hold it to the collector. Hmmmmm...
        Tim Ripley - Gaithersburg, MD
        1981 XS1100 Special "Spoiled Rotten" Just sold - currently bikeless!!
        23mm float height
        120 main jets
        42.5 pilot jets
        drilled stock airbox with K&N
        Jardine 4 to 1 Exhaust
        spade fusebox
        1st and 2nd gear fix

        Comment

        • #5
          Bike Bandit sells them but they are not cheap!
          1980 XS1100 SG
          Inline fuel filters
          New wires in old coils-outer spark plugs
          160 mph speedometer mod
          Kerker Exhaust
          xschop K & N air filter setup
          Dynojet Recalibration kit
          1999 Kawasaki ZRX1100
          1997 Jeep Cherokee 4.5"lift installed

          Comment

          • #6
            If you are missing the bolt that goes into the head a cap screw will work nicely.
            Harry

            The voices in my head are giving me the silent treatment.

            '79 Standard
            '82 XJ1100
            '84 FJ1100


            Acta Non Verba

            Comment

            • #7
              What nuts?

              Hi Ron,
              Clymer sez (and my XS11SG has 'em) that the header pipe flanges are held onto the head by Allen bolts. If yours got studs & nuts someone's been messing with it.
              Fred Hill, S'toon
              XS11SG with Spirit of America sidecar
              "The Flying Pumpkin"

              Comment

              • #8
                They are actually allen head nuts on studs.

                Specials have short studs and standards have longer studs.
                Nice day, if it doesn't rain...

                '05 ST1300
                '83 502/502 Monte Carlo for sale/trade

                Comment

                • #9
                  XSPastor wrote:
                  "Curious. Even if the nuts fall off, the clamp should hold the header on. Was this on the stock system? It would leak and be really loud but should still stay on"
                  ...theoretically the clamp should hold the header on - but it didn't. 'don't know why...
                  ...and yes I heard a LOUD noise, but I was in commute traffic with dozens of semi-trucks around me and what I heard sounded like a diesel truck hitting the "engine bypass" decreacing compression in the motor... it wasn't until I was past a truck slowing down that I realized it MY BIKE making the noise... I hit the kill button and coasted to the side of the road.

                  ...and Crazcnuk is correct: they ARE allen head nuts on studs. I have no idea where to find these... I shall check with Andreas...
                  Has *ANY*body ever ordered the ones from Bike Bandit?? It would be nice having new ones... but I'll put whatever will work on the flange to hold it onto the stud. ...I just hope the exhaust valve is not damaged by the sudden intake of cold air on it...
                  __________________
                  Ron Veil
                  <Ron_Veil@yahoo.com>

                  1980 XS1100SG

                  Comment

                  • #10
                    that'll teach me to believe Clymers

                    "They are actually allen head nuts on studs."
                    Hi Craz,
                    I quote Clymer's Cha. 6 pg 158
                    "3. Remove the 8 Allen bolts (figure 50) securing the exhaust pipe flanges to the cylinder head."
                    Fig. 50 shows the Allen heads, same view as on my bike and they sure look like Allen bolts. One of these days I'll have to soak them in PB blaster and remove them just to teach myself not to take anything for granted.
                    Fred Hill, S'toon
                    XS11SG with Spirit of America sidecar
                    "The Flying Pumpkin"

                    Comment

                    • #11
                      Mine had allen head nuts too. Is there a reason you can't use regular hex nuts on there? I did on mine but I don't have a stock exhaust. If you can use them a regular hardware store will have them in stock and it would get you back on the road until you can find the real deal. Heck, I'll look when I get home, I may have 2 or 3 of the allen nuts that I took off of my bike.
                      1979 xs1100 Special -
                      Stock air box/K&N Filter, MAC 4-2 exhaust, Bad-Boy Air horn, TC fuse box, Windshield, Soft bags, Vetter Fairing, Blinkers->Run/Turn/Brake Lights, Headlight Modulator, hard wire GPS power

                      Short Stack - 1981 xs1100 Standard - lowered for SWMBO.

                      Originally posted by fredintoon
                      Goes like a train, corners like a cow, shifts like a Russian tractor, drinks like a fish, you are gonna love it.
                      My Bike:
                      [link is broken]

                      Comment

                      • #12
                        Heh, now you know how reliable Clymer's manuals really are, Fred!!

                        Yes you can use ordinary nuts. They just used 'fancy' ones for looks.
                        Nice day, if it doesn't rain...

                        '05 ST1300
                        '83 502/502 Monte Carlo for sale/trade

                        Comment

                        • #13
                          just for the hell of it I called our local Yamaha dealer... I didn't have ANY expectations because the past FIVE years everytime I needed the simpilest thing they would NOT have it... !

                          I called and asked if they would still have the exhaust header stud nut in stock; they had FIVE I went down and got the 2 I needed for the one header. They are different now: longer, and they use a 6mm allen to tighten them up instead of the OEM nut that used an 8mm. ...but it tightened down and the exhaust valve apparently didn't get damaged (my REAL fear in all this).
                          Oh: they were FIVE dollors apiece!!

                          'took the bike for a 50 mile ride...


                          NOTE: 4 of the other 6 header flange nuts were ALSO loose...
                          I will now make it a point to check on the tightness of EVERY nut, bolt, and fitting more frequently in the future.
                          __________________
                          Ron Veil
                          <Ron_Veil@yahoo.com>

                          1980 XS1100SG

                          Comment

                          • #14
                            Your exhaust valve was in no danger. It takes a few thousand miles of poor exhaust to burn a valve.

                            How was the exhaust gasket?
                            Nice day, if it doesn't rain...

                            '05 ST1300
                            '83 502/502 Monte Carlo for sale/trade

                            Comment

                            • #15
                              "How was the exhaust gasket?"
                              it looked good but I replaced it anyway - I've got 20 of them and every time I've removed the pipes I replace the gasket with new ones...
                              ...the bike seems to run better, faster, and quieter

                              ...maybe I'm just imagining it
                              __________________
                              Ron Veil
                              <Ron_Veil@yahoo.com>

                              1980 XS1100SG

                              Comment

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