old school cooling fan advice?....

[pvt.tadpolxj]

My xj is totaly OEM.. under the hood, and i have heard of some removing the clutch from the cooling fan and putting in a spacer and running the factory fan straight...Will this have any downside's, or will this cause any other issue's? I am trying to improve my cooling system without having to spend a lot...Thank's scott...

[4.3LXJ]

Yes it will improve the amount of air going across the radiator at low speeds and at idle. The clutch fans all slip a little. The original intent of the clutch fan was the same as the electric fans, slight increase in milage.

[Carves]

X 2 with 4.3LXJ

You might notice ....
a slight fuel consumption increase,
fan noise increase,
and a drop in engine power according to the butt-dyno.

Lots of faerie stories out there about huge fuel and HP variations .... but none seem to be supported with proper facts and figures pertaining to the XJ ..

Would be nice if someone did a - before and after, Dyno test on HP outputs .... hint hint ..

[pvt.tadpolxj]

Thank's a million......I think i should give this a try....My Xj tend's to run a little hot in the summer time....

[Firemanray]

You could do a Grand Cherok fan clutch upgrade. I did it and it helped alot. The fan will still "relax" a bit at higher rpm's. You could add a flex fan, it to will pull lots of air at lower rpm's and relax at higher rpm's.