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Question on Carb Slide Diaphragm repair

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  • #1

    Question on Carb Slide Diaphragm repair

    Having recently traced my bike's running problems to a slide diaphragm with a hole in it, and after pricing a new one for $110 each through Yamaha, I searched the web for alternatives and found the article written by Tim Trotter and posted by Ken Talbot regarding the repair of the diaphragm using Plasti-Dip.

    I figured that with all of you enamored of this ancient XS11 model,(I shouldnt talk my bike is 15 years old! lol ) some of you must have replaced or repaired the diaphragm over the years.

    Has anyone ever used Plasti-Dip to repair holes in the diaphragm, and was it successful?

    If you have bought new, where did you get them and approx how much?

    I really dont want to drop $500 on this.

    Thanks very much for any input.

    Dash
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  • #2
    I havn't used the PlastiDip repair but www.partsnmore.com has new ones for $50 for late model the xs1100 and other bikes.

    Fits XJ1100 J/K/L (82-84) Maxim
    XS1100G/H/LG/LH/SG/SH (81-82)
    Made in Japan
    Bill Murrin
    Nashville, TN
    1981 XS1100SH "Kick in the Ass"
    1981 XS650SH "Numb in the Ass"
    2005 DL1000 V-Strom "WOW"
    2005 FJR1300 Newest ride
    1993 ST1100 "For Sale $2,700" (Sold)
    2005 Ninja 250 For Sale $2,000 1100 miles

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    • #3
      My Dad used "Shoe-Goo" (sold also as "Goop") to fix his. He has 35K miles on the fix.
      DZ
      Vyger, 'F'
      "The Special", 'SF'
      '08 FJR1300

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      • #4
        Got this repair off one of the Kawasaki lists I am on. Haven't tried it yet myself, but it looks promising.

        ahhh the old vacuum diaphragm dilemma.....these things are a constant source of discussion round heer it seems....yeah those things can possibly be repaired if the holes are not too bad and if they are not to close to the inner edge....use some vinyl weld if you can find it...a patch from a condom will help too...just be very careful not to make this repair too thick...i believe stephen has done this repair using a patch from a pair of womens hose
        Brian
        1978E Midlife Crisis - A work in progress
        1984 Kawasaki 550 Ltd - Gone, but not forgotten

        A married man should forget his mistakes. There's no use in two people
        remembering the same thing!

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        • #5
          Well thanks for the input folks. I'll tell you how my repair goes.

          Wish me luck

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          • #6
            Cheap new diaphragms

            Hi guys - thought I'd just add that an English company do brand new diaphragms for CV carbs for just about all Japanese bikes.

            Have a look here

            http://www.nrp-carbs.co.uk/

            I got some for the 1.1s last year with good results (just the forks seals causing me grief this week!

            work out at around 30 UK pounds a carb - or 48 dollars US (assuming 1 : 1.6).

            I had some trouble in fitting them as they come fitted to the slides, but you need to fit the needles from the original slides. Could I get the tiny screw out of the original carbs.........not on your life. Thankfully a mechanic mate (big diesels by profession and his own bikes at home) helped me out.

            At least there's a fall back if you can't seal the holes effectively
            XS1.1 sport - Sold June 2005 :-(
            Guzzi 850
            Z1000

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            • #7
              Carb Slides

              Have 4 good ones for a '78XS E, if you still need some. send me a PM and i'll give you 2 of 'em, you pay shipping. need to keep other 2, you never know.
              Unless you are the lead sled dog the view never changes.

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              • #8
                I also read the note on fixing diaphragms using Plasti-Dip. (http://www.rctvonline.net/xs11/carbdiaphragmrepair.HTML)

                I bought a can of the stuff, but I am at a loss as to how to apply it. The article says to "disassemble the diaphragm from the slide as far down as possible." Does the diaphragm actually come off the slide? I'd be afraid of cracking the white plastic rings which seem to hold it on. If I just spray away, it looks like this Plasti-Dip stuff is going to go everywhere.

                Has anyone reported any issues with the increased weight of the slide assembly due to this coating? Does the additional thickness of the stuff cause problems trying to reassemble the diaphragm into the groove around the top of the carb body?

                I also picked up a tube of stuff called Seal-All. It's from the makers of Shoe Goo / Amazing Goop. They've got a web page (http://www.eclecticproducts.com/sealall/home.asp). It's really nasty stuff, vapor wise, but it claims a high level of resistance to gas and oil. I spread some on a sheet of paper, and it goes on very thin and dries flexible. Using a small paintbrush, it would be easy to apply to only the pin holes. I'm trying to contact the manufacturer to see if it will stick to vinyl or rubber. I wouldn't want a spot of the dried stuff to come off inside the carb a year down the road.

                p.s. I took a dozen and a half hi-res pictures of my carbs as I cleaned the pieces. If anyone is interested, I'd be happy to send them your way.

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