Carburetor Floats

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  • June 23, 2017 at 12:15 pm #7409
    mercuryman
    Participant

      Has anyone made floats from NITROPHYL® Float Material. This is the black closed cell foam.

      June 23, 2017 at 5:56 pm #60192
      amuller
      Participant

        Have heard of people doing it. Supposedly floats can be carved out of blocks of the stuff. The manufacturer of the material rates the stuff as only "fair" in compatibility with ethanol, which gives me some pause.

        https://www.rogerscorp.com/ec/nitrophyl … ility.aspx

        June 23, 2017 at 6:10 pm #60193
        mercuryman
        Participant

          This is the same material that the black closed cell floats are made of. Example the round Mercury floats for AJ carbs.

          You can buy it here, download catalog see page 17. https://www.restorationstuff.com/products.html

          June 23, 2017 at 8:04 pm #60196
          chris-p
          Participant

            Wow not cheap is it!

            June 23, 2017 at 8:54 pm #60197
            frankr
            Participant

              US Member

              I have been modifying the Sierra / Mercury floats for my Gales for years now. I also put one in a Johnson TN several years ago. Way far preferable to monkeying around with trying to salvage old cork floats. And no, I have not seen any Ethanol effects on them, whatsoever. The OMC/BRP replacement floats for their 3-20hp carbs are Nitrophyl also. Their bigger/newer design motors have been Nitrophyl from the get-go.

              June 23, 2017 at 11:40 pm #60198
              crosbyman
              Participant

                Canada Member - 2 Years

                Float for tn’s 😯

                …. any special tricks…to modofy the Merc floats I have a nice TN27 waiting for a new life 🙂

                Joining AOMCI has priviledges 🙂

                June 24, 2017 at 12:00 am #60199
                frankr
                Participant

                  US Member

                  It’s been so long ago, but I don’t think I did anything but remove the spring and drill out the center for the 3-32" float pin. For the Gales, I sand the dome off the top. Don’t take too much off. I did once, and you can’t put it back on.

                  June 24, 2017 at 12:36 am #60203
                  bbstacker1
                  Participant

                    US Member

                    Sierra P/N 18-7208 is the part you are looking for to make a float for the TN motors. I have done a few myself, and as Frank said it is very easy to do.

                    June 26, 2017 at 1:32 pm #60385
                    johng
                    Participant

                      US Member - 2 Years

                      Some older GM(car) gas tanks had 2 styles of closed cell floats in them. Small float fit the 2.5 hp OMC carbs and the larger float fit the TD/TN motors. If carefully cut you can make 3 floats. Sorry I do not know which model cars had these floats. Talk to your local auto shop or scrapper. One advantage to these is that the center hole is already drilled. Stan in Ohio

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