TJ radiator fan upgrade info.......2000-2006 TJ - Page 4 - JeepForum.com

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post #46 of 627 Old 07-09-2011, 06:39 PM
ftgiles
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Originally Posted by chris142 View Post
It will have to wait till were out of our busy season. Right now Im booked solid for 3 weeks.

I did check the temp out of the ducts. 58 with the stock Jeep fan and bolted clutch and 42 with the Ford fan and clutch @ idle.
Wow, that's huge. If you look that up in the TJ FSM A/C pressure/temps chart that would seem to indicate an ambient change from the 110F range to the 90F range indicating something in the range of a 10F to 20F difference at the condensor.

Cool. (no pun intended)





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post #47 of 627 Old 07-09-2011, 06:41 PM Thread Starter
chris142
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Originally Posted by cyber1satan View Post
Did the explorer fan put any more load on the engine cruising down the highway, or does it feel the same as the factory fan? Just curious how much this might hurt the already poor fuel milege haha
Actully it seems much smoother.
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post #48 of 627 Old 07-09-2011, 06:43 PM Thread Starter
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Originally Posted by Unlimited04 View Post

what size wrenches did you need to pull this off the Ford?
A big crescent wrench, a hammer to hit the crescent wrench with and channel locks to hold the pulley since there was no belt on it.
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post #49 of 627 Old 07-09-2011, 09:02 PM
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Anything us 2.5'ers can do?

1998 TJ 2.5 5spd
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post #50 of 627 Old 07-09-2011, 09:13 PM
ColoradoCole
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Chris, thanks for your quick message response and build thread this helps alot any you have saved a bunch of us a head ache of finding a 7 blade fan...

I also like the fact that the blades are plastic and lighter weight...
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post #51 of 627 Old 07-09-2011, 09:36 PM
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Great thread. Thanks for detailing this upgrade. Kudos to Chris.
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post #52 of 627 Old 07-09-2011, 09:43 PM
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Great thread. Thanks for detailing this upgrade. Kudos to Chris.
Yep, he done a good job for us.

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post #53 of 627 Old 07-09-2011, 09:53 PM
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why wont this work for a 97?

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post #54 of 627 Old 07-09-2011, 09:54 PM
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post #55 of 627 Old 07-09-2011, 10:04 PM Thread Starter
chris142
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Anything us 2.5'ers can do?
You shouldn't need to change anything. The 4cyl Jeeps use the same Radiator as the 4.0 does. If your having problems with a 2.5 getting hot then you have a majorly plugged radiator, bad fan clutch etc.
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post #56 of 627 Old 07-10-2011, 07:23 AM
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Good right up !! Thanks for sharing
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post #57 of 627 Old 07-10-2011, 07:33 AM
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Anyone try this with an MML?

I'm assuming if it will fit in the fan shroud stock, it should still fit in the fan shroud once it's moved for the MML. (I drilled new holes and raised my shroud up)

-Erik.

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Hack work? :rofl: You just described half the modified jeeps on this board.
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post #58 of 627 Old 07-10-2011, 10:58 AM
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Chris,

Since you work at an A/C shop you could provide some cool facts for us.

Run both the stock fan setup and the Ford Explorer setup for 15 minutes each. Do it back to back so ambient temps are the same. Run the blower on high with the A/C on. Hook up your A/C system gauges and tell us what the high-side pressure is after the 15 minute tests. If the fan is pulling more air and cooling better then the pressure should drop showing that increased cooling.

Couple the pressure differences with a therometer reading stuck in the center duct would be very interesting.

There is a lot more to fans than just blade count. Pitch also plays a big role. It also depends on how far the pitch goes down the blade as the blade approaches the center or if the pitch is variable along the blade. The center is turning slower than the outside which creates turbulence or not depending on the pitch.

More blades and a curved tip are usually to decrease noise and more blades usually require more energy to spin them.


From the looks of the pics, it was a plastic fan. Or am I just seeing things. I didnt see anyone mention this earlier so maybe I am just seeing things.

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post #59 of 627 Old 07-10-2011, 11:13 AM
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I have always wondered why two of the blades on a stock fan are closer together than the other three. Anyone know why?
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post #60 of 627 Old 07-10-2011, 11:28 AM
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Got er done! Took all of 5 minutes and didn't have to remove a thing. Seems to cool a little better, about 1 needle width lower on the temp gauge. I do have a 1" MML and no problems there. Can't say about AC as I'm still running without a top on. 105 still isn't hot enough.

Thanks Chris


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Tags
10 blade , 5 blade , 9 blade , cooling , explorer , fan blade , Fan clutch , ford , upgrade

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