A/C Delete - How to plug hole in Firewall?

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  • Panici
    Moderator
    • Dec 2009
    • 2311

    #1

    A/C Delete - How to plug hole in Firewall?

    Finally got around to removing the A/C hoses running through the firewall.


    Any suggestions on how I can block this hole into the cabin? I took a quick look at RealOEM and didn't see anything that fits.



    Cheers!

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    '87 BMW E30 325is Turbo

    '99 BMW E36 M3 - - - '98 BMW E36 328i
  • Kershaw
    R3V OG
    • Feb 2010
    • 11822

    #2
    Tons of ways.

    Fiberglass.
    Steelstik.
    Hockey puck.
    Take a mold of it and make a urethane plug.
    Clay.
    Dirt.
    Grass.
    Rivet a piece of metal on.
    Tack a piece of metal on.
    Spray foam insulation.
    Rigid foam insulation.

    The sky's the limit man. Go nuts.
    AWD > RWD

    Comment

    • varg
      No R3VLimiter
      • May 2014
      • 3283

      #3
      Take dimensions and have someone who does CAD draw one up and 3D print a plug out of TPU.

      IG @turbovarg
      '91 318is, M20 turbo
      [CoTM: 4-18]
      '94 525iT slicktop, M50B30 + S362SX-E, 600WHP DD or bust
      '93 RX-7 FD3S

      Comment

      • Panici
        Moderator
        • Dec 2009
        • 2311

        #4
        I have to thank Jacob Falk from the R3V facebook group.
        He saw my post and designed and printed a plug for me, in record time!
        I love our enthusiast community!


        I used some sealant for good measure when I installed, but i'd say it would keep the water out without it.
        Fit is fantastic, and it's fully reversible if I want to run A/C again. Reasonable price as well.

        It's also a soft/pliable rubber material, could drill a hole through it and run wires if needed.

        https://www.falkmfg.com/ is his website if you need one!



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        Attached Files

        '87 BMW E30 325is Turbo

        '99 BMW E36 M3 - - - '98 BMW E36 328i

        Comment

        • Panici
          Moderator
          • Dec 2009
          • 2311

          #5
          Thread update:

          I ended up welding in a patch for the hole.
          The plug worked great, I just wanted a cleaner solution for my semi-shaved engine bay.

          Click image for larger version  Name:	51003652408_d6909b8fb0_b.jpg Views:	377 Size:	63.1 KB ID:	10036990

          Last edited by Panici; 05-13-2024, 03:44 AM.

          '87 BMW E30 325is Turbo

          '99 BMW E36 M3 - - - '98 BMW E36 328i

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