ZJ fan blade upgrade?

[sandfreestyle]

I've searched and cant find anything on people using the ZJ 4.0 fan blade along with the fan clutch on an XJ. Seems to be a simple upgrade with 2 extra blades to get more air flow.

 

[Tim_MN]

Some people have installed a Ford Explorer plastic fan. It has more blades.

 

[RCP Phx]

That would seem to be counterintuitive as the fan clutch would have to work harder. I would thin improving that would be the first step.

 

[sandfreestyle]

That would seem to be counterintuitive as the fan clutch would have to work harder. I would thin improving that would be the first step.

I have the ZJ clutch already so it would work (in theory) just fine.

 

[alexgalexg]

Is the ZJ clutch plug and play?
If so what year is your XJ and what year ZJ clutch did you use

Sent from my SM-G950U using Tapatalk

 

[sandfreestyle]

Is the ZJ clutch plug and play?
If so what year is your XJ and what year ZJ clutch did you use

It is plug and play, just be careful of the clearance between the front of the clutch and radiator.

94 XJ w/ 4.7 stoker, 97-98 ZJ HD 4.0 fan clutch

Trying to get some more airflow across the rad to help stabilize engine temps. Gone trough the entire cooling, ignition, and fuel system and this engine runs hot (220 no a/c) normal freeway driving.

 

[ehall]

ZJ HD fan clutch is drop-in replacement. HD so I think its the V8 clutch not the 4.0 clutch. Basically it just comes on earlier / goes off later. I found it overcooled my old motor.

 

[Green XJ Jeep]

ZJ HD fan clutch is drop-in replacement. HD so I think its the V8 clutch not the 4.0 clutch. Basically it just comes on earlier / goes off later. I found it overcooled my old motor.

It also has less slippage built into it. Dont emember the fact percentage but it is noticeable.
I personally didnt like it. Made more noise with a noticeable decrease in mileage without much improvement in cooling.

I recommend the op service their cooling system first before you start throwing fans at it.

 

[sandfreestyle]

I recommend the op service their cooling system first before you start throwing fans at it.

Already have all new 3-row radiator, hoses, t-stat and housing, both sensors, and high flow pump. Not really much to service there now.

 

[sandfreestyle]

ZJ HD fan clutch is drop-in replacement. HD so I think its the V8 clutch not the 4.0 clutch. Basically it just comes on earlier / goes off later. I found it overcooled my old motor.

Has to be the 4.0 since the V8 has a single screw on mount vs the 4 post mount.