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Where’s a good place to install a electric radiator fan sending unit?

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  • Where’s a good place to install a electric radiator fan sending unit?

    Hey guys,
    Where’s a good place to install a Spal electric radiator fan sending unit? I might have to get a wired ground sending unit for putting it inline with a hose.
    1988 M3 zinnoberrot/schwarz

  • #2
    I welded a bung to the aluminum coolant pipe that bolts to the head....right next to the OEM coolant sensors....

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    • #3
      I have just fitted a 16' spal push fan in mine, and did away with the mechanical fan (needed a viscous voupcoup anyways). I used a 80/88 degree temp switch in the thermostat housing in place of the standard higher temp switch (94/98?). Very happy with the result. Why use the spal sender? The 80/88 is a common mod, Google it.

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      • 99M3Riverside
        99M3Riverside commented
        Editing a comment
        What model fan did you use from SPAL. I got a low profile but I don't think it moves enough air.

    • #4
      Spal 30102048 Pusher Fan 16In High Performance ; Curved Blade 1959CFM

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