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Thread: Deep water - anyone tied off the viscous fan?

  1. #1
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    Deep water - anyone tied off the viscous fan?

    Hey folks,

    I'm wanting to be able to stop my viscous fan in my 300Tdi spinning during long deep water crossings.
    I've heard of people tieing them off to something. And/or drilling a small hole in a fan blade (not near the edge) to give a hole to tie the fan off to something to stop it spinning.
    I don't want to have to remove the whole drive belt to stop the fan spinning. And there is no way i am using an electric fan just to enable me to switch it off for crossings
    How did they do it in the camel trophy!? lol

    Anyone have any tips/ideas/tricks?

    Thanks!
    97 Disco 300Tdi, front & rear diff locked, hybrid turbo, full width intercooler, cranked front & rear arms,
    2” dobinson coils, terrafirma shocks, HD steering arms, diff guards, rocksliders, domin8r winch, tank guard

  2. #2
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    Never thought about it.
    What about taking the fan off?
    Takes a couple of minutes if you have a fan spanner.

  3. #3
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    Nah , thats for pussys.
    Go through metre deep water on the OTT and break off a couple of blades like I did.

    I luckily had a 300Tdi fan on my 91RRC and the blades are glass filled and they managed to hold onto the hub until I chopped them of and a couple from opposite.
    Luckily it just polished the radiator.

    Regards PhilipA
    If doing similar again, I would take the fan off.
    Oh and fit a blind.

  4. #4
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    Yeah i carry a fan spanner in my tools but wanted something easier.
    Not sure why tieing the fan off wouldn't work. Unless the fan was hot and fairly locked up - i wonder if that would damage the viscous hub...
    97 Disco 300Tdi, front & rear diff locked, hybrid turbo, full width intercooler, cranked front & rear arms,
    2” dobinson coils, terrafirma shocks, HD steering arms, diff guards, rocksliders, domin8r winch, tank guard

  5. #5
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    Quote Originally Posted by PhilipA View Post
    If doing similar again, I would take the fan off.
    Oh and fit a blind.
    Why use a water blind/bra as well as taking the fan off? To stop debris from filling the front of the radiator? Besides the fan - water cant do much to a 300tdi with a snorkel.
    97 Disco 300Tdi, front & rear diff locked, hybrid turbo, full width intercooler, cranked front & rear arms,
    2” dobinson coils, terrafirma shocks, HD steering arms, diff guards, rocksliders, domin8r winch, tank guard

  6. #6
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    There are still a lot of components in the engine bay to get wet. Fuse boxes, connectors , aircon fans etc etc.

    I can also assure you it is no fun removing headlights and cleaning muddy water out of them, while trying to preserve their reflectivity. Been there done that in Litchfield.
    Regards PhilipA

  7. #7
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    I've known of seemingly perfect looking fans shedding blades (seen a couple stuck in what were previously good bonnets), I wouldn't tempt it by drilling holes in one anywhere, let alone tying one off. Just remove it.
    1996 Disco 1 300TDI manual - Lucille a cantankerous red head! :D
    1997 Disco 1 300TDI Auto - sold

  8. #8
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    Hope they removed their fan
    97 Disco 300Tdi, front & rear diff locked, hybrid turbo, full width intercooler, cranked front & rear arms,
    2” dobinson coils, terrafirma shocks, HD steering arms, diff guards, rocksliders, domin8r winch, tank guard

  9. #9
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    In the old days we'd loosen the fan belt and just tie a tarp over the front of the car & keep a bow wave up, nothing will get wet unless you stop, and no need for a snorkel either. Cant loosen aserpentine belt though. Only an idiot would tie the fan off.

  10. #10
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    Quote Originally Posted by goingbush View Post
    In the old days we'd loosen the fan belt and just tie a tarp over the front of the car & keep a bow wave up, nothing will get wet unless you stop, and no need for a snorkel either. Cant loosen aserpentine belt though. Only an idiot would tie the fan off.
    Yup i have done deep water with no tarp, just a bow wave. But if you get stuck mid-crossing and the fan is spinning...
    Looks like the only option is to temporarily remove the fan
    97 Disco 300Tdi, front & rear diff locked, hybrid turbo, full width intercooler, cranked front & rear arms,
    2” dobinson coils, terrafirma shocks, HD steering arms, diff guards, rocksliders, domin8r winch, tank guard

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