Reverse or normal rotation fan?

[Petescj]

My 81 has the AMC 258 i6 / 4.2l with a Vbelt set up. I was under the assumption that this is a normal rotation set up and the serpentine belt ones are reverse rotation. Is this correct? Need to tell Vicki which to order while I'm here at work.

 

[Techlight]

My 81 has the AMC 258 i6 / 4.2l with a Vbelt set up. I was under the assumption that this is a normal rotation set up and the serpentine belt ones are reverse rotation. Is this correct? Need to tell Vicki which to order while I'm here at work.

You are correct sir...i don't think there are any exceptions. I got my Jeep on the cheap because the PO had a standard rotation fan on the jeep and blew the motor after driving it until it overheated and wouldn't start again. I didn't know until after I put the new motor in and had mysterious overheating problems lol...that took me 2 weeks to solve.

Subsequently I can offer you a cheap standard rotation heavy duty 7 blade if you're in need, the rivets are good but there's some surface rust around the bolt holes (just needs a little wire brush and some paint).

Good luck with the fan replacement...

 

[CJ]

Yep as stated, serps reverse rotation, V's standard.

 

[ThisGuyUKnow]

You are correct sir...i don't think there are any exceptions. I got my Jeep on the cheap because the PO had a standard rotation fan on the jeep and blew the motor after driving it until it overheated and wouldn't start again. I didn't know until after I put the new motor in and had mysterious overheating problems lol...that took me 2 weeks to solve.

Subsequently I can offer you a cheap standard rotation heavy duty 7 blade if you're in need, the rivets are good but there's some surface rust around the bolt holes (just needs a little wire brush and some paint).

Good luck with the fan replacement...

I dont think there are any exceptions. A quick way to tell is if the water pump pulley is driven by the back (smooth side) of the belt it is reverse rotation. Grooved side is clock wise.

I am pretty sure that all vbelt setups are clockwise because the vbelt is too thin to run an accessory of the back side.

 

[CJ]

~ Grooved side is clock wise.

I am pretty sure that all vbelt setups are clockwise because the vbelt is too thin to run an accessory of the back side.

Exactly, not enough friction...

 

[Lumpy Grits]

WP's come withOUT pulley.
Take your old pump with you to the parts house. Many times, I have seen the 2 different pumps mis-box'd/re-box'd buy the counter guys. They are supposed to have an "R" stamp'd on the reverse-rotation WP impeller, They don't always do---
LG