Vehicle & Technical > Defender

VISCOSE FAN

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smith335:
i want to change the fan on my 2.3 petrol 90.
its the old fixed four blade fan.
i want to change it to a viscose unit.

now does any one know how this is done?
is it straight forward, ie just get a viscose unit and fan and a different spacer/adapter.and bolt it on the the pulley.
or would one have to change the water pump?

not sure how these things fit.

any help and advise would be great.

hobbit:
Why not go electric with a thermal switch in line?

V8MoneyPit:
I think the water pump is different. If I understand it correctly, the 4 blade fan bolts on using the 4 pulley retaining screws. The viscous unit uses a large thread in the middle which is part of the pump shaft.

Well, at least, I think it's like that! Someone else will no doubt be able to confirm that.

smith335:
thanks for the info guys, i think it does fix to the water pump.
so thats rules that out.
may go down the kenlowe path but do they realy make any difference?
they cost a bit,and if its only saving a bit then is it worth it?

i am never going to make a 2.25 90  good on fuel.
o dear, what shall i do..........

veeeight:
Try going to a scrap yard, I went the other day and got a pair of fans in one shroud out of a v8 Audi for a tenner.
The fit straight in my V8 Defender, got meself a adjustable thermostat off ebay and hey presto a complete set up for £30.
Works a treat, ran them through a double over-ride switch so I can kill one or both fans for fording.
I havent tried them on a motorway run after a day playing in the mud (blocked radiator type senario) but so far things seem to be ok.
Warms up alot quicker, and I have set the thermostat to come in half way up the temp gauge, where the viscous wouldnt let it go any higher than quarter in this weather.

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