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Ultrasounding carbs

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  • Ultrasounding carbs

    What's the benefit to ultrasounding carbs that are clean on the outside.

    Is there any benefit that ultrasounding will do to the lines inside the carb that can't be dealt with by carb spray & an air gun?

    Thanks
    82 XJ1100 Maxim "hurricane"- DEKA EXT18L AGM battery , NGK BPR6EIX spark plugs, Green Dyna coils, Sylvania SilverStar Ultra H4 bulb, 139 dB Stebel Nautilus air horn, Home-made K&N air filter based on an original paper filter frame, new piston rings, Barnett Clutch Springs, SS braid/Teflon brake lines, TKAT fork brace, rebuilt calipers, master cylinders, new brakes, reupholstered seat, lotsa little things and so many answered questions here.

  • #2
    The USC will vibrate loose crud that sometimes spray and air won't remove. This is if you have a good USC, the Harbor Freight ones aren't worth a dam, JMHO.
    2H7 (79)
    3H3

    "If it ain't broke, modify it"

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    • #3
      The ultrasound causes cavitation in the liquid which helps to clean out the passages by the little bubbles knocking around.
      Nathan
      KD9ARL

      μολὼν λαβέ

      1978 XS1100E
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      • #4
        Originally posted by bikerphil View Post
        The USC will vibrate loose crud that sometimes spray and air won't remove. This is if you have a good USC, the Harbor Freight ones aren't worth a dam, JMHO.
        I've got a HF unit, and while it isn't the best I've ever seen, I think it's adequate (that old 'you get what you pay for' thing..). I have noticed that the more parts you load in it, the less effective it seems to be. One thing the USCs have over conventional cleaning methods is you can use cleaners that aren't harmful to rubber products in them and they still work fairly decently. Really crusty parts I'll pre-clean in solvent (paint thinner) before running them in the USC. The biggest problem with the HF unit is it's rather small tub size.
        Fast, Cheap, Reliable... Pick any two

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        • #5
          Running RXP through the fuel system a few times a year and there isn't any crud to clean, cheap insurance IMO.

          http://rxp.com/master.htm

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          • #6
            While doing some research on the subject I read that, while not a 100% definitive test, a decent USC should physically deteriorate a piece of aluminum foil. I know the one I use will. I put my hand in it ONCE to see how powerful cavitation could really be. Needless to say, it hurts pretty bad.
            '81 XS1100 SH

            Melted to the ground during The Valley Fire

            Sep. 12th 2015

            RIP

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            • #7
              Originally posted by 81xsproject View Post
              While doing some research on the subject I read that, while not a 100% definitive test, a decent USC should physically deteriorate a piece of aluminum foil. I know the one I use will. I put my hand in it ONCE to see how powerful cavitation could really be. Needless to say, it hurts pretty bad.
              I am going to try that with my Harbor Fake USC with the aluminum foil, not the hand.

              Hmmm, maybe try a little chlorine in there...
              Last edited by bikerphil; 12-08-2010, 10:21 PM.
              2H7 (79)
              3H3

              "If it ain't broke, modify it"

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              • #8
                81xsproject

                I had a pretty high powered sonic cleaner until it was lent and got burnt up.
                Anyway I ran my hand in to pick out a part and it stung every joint in my hand that had arthritis!
                I sure remembered where those beat up fingers were!

                I ran the SF carbs through that thing I thought they were pretty clean. Was I ever wrong. There was crud running out of every hole in the carb body. The bottom of the tank looked like I cleaned a pair of boots. Thats an exaggeration but it sure got junk out of there that I would have bet wasn't there.

                Worth having if you can afford a better one.
                RIP Whiskers (Shop Boss) 25+yrs

                "It doesn't hurt until you find out no one is looking"

                Everything on hold...

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                • #9
                  Interesting video of ultrasonic cleaning

                  http://www.youtube.com/watch?v=EhMKF...layer_embedded
                  1995 KZ100P
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                  1977 Ironhead - custom build
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                  Sold all my XS's to Eastcoaster but still love to keep up with you guys. This is the best cycle forum on the web.

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