What are these plastic spirals in my new radiator?

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  • MC Hammered
    R3VLimited
    • Jul 2008
    • 2076
    #1

    What are these plastic spirals in my new radiator?

    New Behr radiator arrived today and when I peek inside of it each rung has one of these plastic twisted spirals in it.

    So can anyone tell me why they are in there and what purpose they serve before I pour coolant into the radiator?

    TIA for any information




    My 1989 e30 s52 Touring... this is Betty

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    Photo comparison: OEM vs aftermarket windscreen for a convertible
    Tags: None
    • TobyB
      R3V Elite
      • Oct 2011
      • 5170
      #2
      Turbulators.

      Or packing material.

      t
      now, sometimes I just mess with people. It's more entertaining that way. george graves

        Comment

        • Hey_You
          E30 Modder
          • Nov 2009
          • 963
          #3
          Vortex generators, makes you coolant flow faster!
          85' 318i ~The Bronze Bomber (FrankenM10 with a Forced Future :wgaf:)

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            • jeffnhiscars
              R3V OG
              • Jun 2011
              • 6010
              #4
              Looks like fusilli. Cooks while you drive.
              Seat Shocks....I have passed the baton to John Christy from Ninestitch. Email John or Garrett at ninestitch1@gmail.com

              https://www.r3vlimited.com/board/sho...86#post4944786
              Alice the Time Capsule
              http://www.r3vlimited.com/board/showthread.php?t=360504
              87 Zinno Cabrio barn find 98k and still smells like a barn. Build thread http://www.r3vlimited.com/board/show...20#post3455220

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                • dogsbark26
                  E30 Addict
                  • Nov 2008
                  • 533
                  #5
                  I've never seen anything like that before.

                    Comment

                    • Jaxx_
                      E30 Mastermind
                      • Dec 2009
                      • 1880
                      #6
                      I have them in my radiator too. It's for evening out load as well as surface area optimization, I'd guess.
                      '84 318i M10B18 147- Safari Beige
                      NA: 93whp/90ftlbs, MS2E w/ LC, 2-Step
                      Turbo: 221whp/214ftlbs, MS3x flex @ 17psi

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                        • cabriodster87
                          E30 Enthusiast
                          • Jan 2011
                          • 1042
                          #7
                          Seen them made of aluminum in my old 318i, things get stuck in the twists.
                          sigpic
                          Reich und Roll!

                            Comment

                            • dogsbark26
                              E30 Addict
                              • Nov 2008
                              • 533
                              #8
                              This creates turbulence in the tubes, exposing more coolant to the radiator tube walls and improving heat transfer.

                              Car Craft, February, 2009

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