Outer Limits 4x4 Board

is there such a thing as a clutch fan for a zook? will any other models fit without changing the water pump. do late model coilers have one??? dont wanna run thermos before ya go there.

mine has a clutch fan

maby coz its coily

pritty sure you could get one from a coily
i thought your zook would have one

is a clutch fan the same as a viscous? then yes I have one and it should be as easy as changing the waterpump and fan over on a g13ba engine. why do you want one though?

are the water pumps different? would rather just change the fan and not the pump. will get less per loss with a clutch fan than with a fixed one. also allows enging to rev easier and a little quicker. plus i want to do water crossings and a clutch fan is the way to go

built4thrashing wrote:are the water pumps different? would rather just change the fan and not the pump. will get less per loss with a clutch fan than with a fixed one. also allows enging to rev easier and a little quicker. plus i want to do water crossings and a clutch fan is the way to go

Why again is it that you don't want to run a thermo fan?...seems like it would completely solve all of your problems.....less loss than any other type of fan, and can flick a switch during water crossings.....car warms up quicker in the mornings too.

thermo fans are verry good had one on my zook but my old man wired it incorrect and it stoped working

only noticed when it was a real hot day stuck in traffic and coolant came out the over flow

but yeah when driving at speed the thermo wont even come on

and noticable power increase

pjhsv wrote:

built4thrashing wrote:are the water pumps different? would rather just change the fan and not the pump. will get less per loss with a clutch fan than with a fixed one. also allows enging to rev easier and a little quicker. plus i want to do water crossings and a clutch fan is the way to go

Why again is it that you don't want to run a thermo fan?...seems like it would completely solve all of your problems.....less loss than any other type of fan, and can flick a switch during water crossings.....car warms up quicker in the mornings too.

Yeah you can turn them off for water crossings but once you get water/mud in there they are stuffed. Clutch fan is the more reliable options IMO. I have a Vit 1.6 16v EFI and it came with a clutch fan.

Damo wrote:once you get water/mud in there they are stuffed. Clutch fan is the more reliable options IMO.

Go to the top of the class Damo

Builtforthrashing, if you are a soft rooster, prissy boy and don't like to play in the mud, or you drive around dirty waterholes, go the thermo, but an engine driven fan will always be more reliable (always)
Peter.

droopypete wrote:Go to the top of the class Damo

Do I get a gold star?

I've got one off a vitara here if someone wants to bribe me with some beer.

yes droopy i like mud thats why i dont wanna go the thermo fan set up. with any fan they dont do anything above about 40km/h. id just perfer a thermo to the fixed fan.

built4thrashing wrote: with any fan they dont do anything above about 40km/h. id just perfer a thermo to the fixed fan.

Oh yes they do.

Disconnect the fan and go for a drive. It will overheat even over 40 kph.

Clutch fans have a electric clutch like an A/C compressor and are pretty much the best of both worlds. Not many cars have them though, although I know that most late model Mercs have them.

Viscous fans are very very much a black art. They are "calibrated" with about 1,000,000 different grades of silicone flud and I reckon that a coiler fan, wouldn't work properly on a brass radiator sierra.

I have done a fair bit of work on a 1.6 converted sierra with a viscous fan, and I don't think it works properly on a sierra radiator, even with a shroud. ( i.e it gets hot on the highway)

Viscous fans can be touchy too. My Gwagen one leaked all of the fluid out (not the only one I know that has done t his) If they cool right down, (i.e in deep mud) they lock up and will still destroy the radiator/itself.

sorry that this is not all helpful, but viscous fans are far from perfect.

Gwagensteve wrote:I have done a fair bit of work on a 1.6 converted sierra with a viscous fan, and I don't think it works properly on a sierra radiator, even with a shroud. ( i.e it gets hot on the highway)

I have never had a cooling problem with my G16B with viscous fan and sierra 1.3 radiator (with shroud).

Gwagensteve wrote:

built4thrashing wrote: with any fan they dont do anything above about 40km/h. id just perfer a thermo to the fixed fan.

Oh yes they do.

Disconnect the fan and go for a drive. It will overheat even over 40 kph.

Clutch fans have a electric clutch like an A/C compressor and are pretty much the best of both worlds. Not many cars have them though, although I know that most late model Mercs have them.

Viscous fans are very very much a black art. They are "calibrated" with about 1,000,000 different grades of silicone flud and I reckon that a coiler fan, wouldn't work properly on a brass radiator sierra.

I have done a fair bit of work on a 1.6 converted sierra with a viscous fan, and I don't think it works properly on a sierra radiator, even with a shroud. ( i.e it gets hot on the highway)

Viscous fans can be touchy too. My Gwagen one leaked all of the fluid out (not the only one I know that has done t his) If they cool right down, (i.e in deep mud) they lock up and will still destroy the radiator/itself.

sorry that this is not all helpful, but viscous fans are far from perfect.

There is truth in what you say Steve, but I would have a viscous coupled fan ahead of a thermo any day, (but I like the sound of a magnetic clutch, except it would surely have to be heavy, therefore sap a lot of power?)
Peter.

2 plus'sz 4 a thermo is u can turn it off, and it takes some load off our tinny engines, but for reliability,
if the fan stops, so does your car


Mock

coil sierra,swift,vitara will all fit onto the sierra water pump...

sweet thanx mud4b

The one that comes from a Jimny too.

Will

i thought the holes were too close on the jimny ones but i havent checked

I have a friend in the club who has a fan cltch from a Jimny. He said it sits a little bit further in the shred but is just a couple of mm.

BTW. He also said it is a bolt in.

Will