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Author Topic: Running 2.5td without viscous fan?  (Read 2165 times)

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bp_porcaro

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Running 2.5td without viscous fan?
« on: 14 December 2009, 09:22:32 »

Can the 2.5td run ok without the viscous fan during the winter ????

Will it help get to running temp quicker for short morning journeys ? and hence probably give better mpg.

Any advice or experiences would be gratefull.
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Kevin Wood

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Re: Running 2.5td without viscous fan?
« Reply #1 on: 14 December 2009, 09:53:43 »

I believe TheBoy ditched the viscous fan on his and it worked fine in all weathers.

.. but it won't help it warm up quicker because it's only when the thermostat opens that it provides any cooling effect (assuming everything is working as it should).

It will probably quieten the car down a little and save a little fuel though.

Kevin
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damage consultant

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Re: Running 2.5td without viscous fan?
« Reply #2 on: 14 December 2009, 11:15:07 »

I took mine out after i recharged the air-con this is left on as a back up if I get stuck in traffic.
it doesn't sound like a jet taking off now ;D
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Turk

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Re: Running 2.5td without viscous fan?
« Reply #3 on: 14 December 2009, 16:18:20 »

Mines been off and stored upright with the spare wheel for about 6 months.
I kinda miss the "Whoooosh" sound, but it did break all else.
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platty

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Re: Running 2.5td without viscous fan?
« Reply #4 on: 14 December 2009, 19:03:17 »

If you throw the viscous in the bin it may warm up slightly quicker (only very slightly) but the most likely candidate will be the thermostat.
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charlie

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Re: Running 2.5td without viscous fan?
« Reply #5 on: 14 December 2009, 19:04:54 »

with out the fan on i can do 1200miles journry in 20 hours no problem
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charlie

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Re: Running 2.5td without viscous fan?
« Reply #6 on: 14 December 2009, 19:05:38 »

with overheating
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bp_porcaro

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Re: Running 2.5td without viscous fan?
« Reply #7 on: 14 December 2009, 19:09:34 »

I take it you meant 'without overheating'  ;)

I've read enough  :y it's coming off at the w/e.

Cheers everyone.
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charlie

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Re: Running 2.5td without viscous fan?
« Reply #8 on: 14 December 2009, 19:12:29 »

yip thats what i meant :-X
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TheBoy

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Re: Running 2.5td without viscous fan?
« Reply #9 on: 14 December 2009, 20:18:59 »

Yeah, ran mine for 18months with no viscous. Chipped, and not exactly driven like Miss Daisy.

Change the stat though, yours is shagged. Once viscous off, about 20 mins to do stat (reckon I could do in under 5)
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Re: Running 2.5td without viscous fan?
« Reply #10 on: 14 December 2009, 21:17:34 »

Quote
Yeah, ran mine for 18months with no viscous. Chipped, and not exactly driven like Miss Daisy.

Change the stat though, yours is shagged. Once viscous off, about 20 mins to do stat (reckon I could do in under 5)

TB wins the prize for understatement of the day ::) ::) ;D ;D ;D
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chartz

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Re: Running 2.5td without viscous fan?
« Reply #11 on: 09 January 2010, 22:23:00 »

Hi,

Well I never could run without my viscous fan. But then I found out that an obstructed (they all are) aircon radiator prevents the air flow to reach the clutch, hence never disengaging the thing, unless the weather is very cold...
The solution is to interpose some plastic sheet between the two radiators and karchering out the mud and bugs that have invariably accumulated there through the years.
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bp_porcaro

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Re: Running 2.5td without viscous fan?
« Reply #12 on: 10 January 2010, 13:51:24 »

I took the viscous fan off about 3 weeks ago, and replaced the stat at the same time.

It runs perfect now.  Gets up to about 80 quicker and then holds steady at that temp.

Both jobs were quite easy to do.

 :y :y
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Pitchfork

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Re: Running 2.5td without viscous fan?
« Reply #13 on: 10 January 2010, 13:56:29 »

Quote
I took the viscous fan off about 3 weeks ago, and replaced the stat at the same time.

It runs perfect now.  Gets up to about 80 quicker and then holds steady at that temp.

Both jobs were quite easy to do.

 :y :y
Interesting because when I removed mine, the steady-state temperature went from 92.5 to 97.5 yet yours is a 80 without the viscous
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charlie

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Re: Running 2.5td without viscous fan?
« Reply #14 on: 10 January 2010, 14:51:53 »

mines is the same temp,when running as bp's.I also took viscous off and replaced the stat.
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