cooling fan

[Master]

Does the 1.8 tubo & the 2.0 cdti share the same cooling fan

[T-Cut]

It all depends on what you mean by 'cooling fan'. The diesels have a unique fan control system that can't be used in other models. The earlier diesels have/had a three speed motor whereas the 1.8s have always been 2-speed. All later models have the same 2-speed fan motors, but are controlled differently by engine variant.

What exactly do you want to do?

TC

[Sector-9]

The same plastic blade, probably yes. The same motor - maybe if later diesel with external resistor. The control box and plastic shroud - no.

[genpk]

Originally Posted by Sector-9

The same plastic blade, probably yes. The same motor - maybe if later diesel with external resistor. The control box and plastic shroud - no.

Think your right, I believe you can use the fan motor and rewire it to the control box of a petrol (with a bit of re wiring.)
If going from an old 3 speed fan (no resistor) to a 2 speed you need to fit the resistor and also do a bit of rewiring as well.
Im sure I read a post somwhere where somone did that ???

[Master]

Originally Posted by T-Cut

It all depends on what you mean by 'cooling fan'. The diesels have a unique fan control system that can't be used in other models. The earlier diesels have/had a three speed motor whereas the 1.8s have always been 2-speed. All later models have the same 2-speed fan motors, but are controlled differently by engine variant.

What exactly do you want to do?

TC

Been looking for a replacement cooling fan for my cdti for some time & i saw an add for 1.8 / 2.0 cdti cooling fan & was wondering if i could just switch the motors over.....

[Sector-9]

If your diesel has a three speed fan motor (likely as the two speed ones don't usually wear out), then the replacement will also need to be a three speed motor unless you fancy changing wiring, and possibly the control box.

Rebrushing your existing motor is not difficult, provided you've got a powerful soldering iron and the commutator is not worn out.

[Fishytroll66]

Visit Jules' forum shop, full replacement fan with all the info. I am buying one tomorrow.
Look at the fan from the front of the car, if there is a silver resistor at roughly 2 o'clock then you have the 2 speed. No resistor means 3 speed - like mine.
Jule's kit comes with everything you need- other than the skill and tools to fit it. £139 plus p&p.

Better, quieter fan and for about half the price of OEM one.....

[pyrite]

I fitted a 2 speed fan from a 1.8t to my cdt which originally had a 3 speed one, the shroud is exactly the same but had to rewire the control box. There is a how to on here detailing the procedure

[genpk]

Not sure but I think I read somwhere the KV6 petrol fan was rated as a 450 watt fan and the 1.8 was 400 watt ? Personally cant see why MGR would have bothered with different rated fans ??

[SD1too]

Originally Posted by genpk

... I read somwhere the KV6 petrol fan was rated as a 450 watt fan and the 1.8 was 400 watt ..

That's partially correct!

Diesel & KV6:
450 watts 3 speed (superseeded by 2 speed)

1.8:
250 or 350 watts and 2 speeds (RAVE says that the lower power motor was fitted to manual gearbox cars without air conditioning of which there are few).

Personally cant see why MGR would have bothered with different rated fans ?

For the universally applicable commercial reason Peter: it's cheaper not to 'over-engineer' things! However, the great engineer Isambard Kingdom Brunel did not follow this principle. He said that his Great Western Railway was not the cheapest proposal but it would be the best. History has, of course, borne this out. So in the long run, it is cheaper to over-engineer for reliability, performance and durability. Sadly the accountants and executives looking for maximum profit consider only the short term.

Simon