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Unread 06-21-2013, 09:42 PM   #1
89shaggoneer
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Location: chanute, ks
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Jeep keeping cool

Hey guys so I currently have a 1989 jeep grand wagoner, with aftermarket aluminum radiator but no fan shroud. The fan clutch etc and thermostat is in good working order, The jeep keeps cool under normal driving operation it gets a little warm on long idles in hot weather but stays fairly good, but on low rpm/ idling offroad etc the jeep gets way to hot, also im getting the ac system operational and was told without a fan shroud or something pushing more air through it would build up too much back pressure?! soo my question is should I spend the 150 plus dollars to have a fan shroud built im unsure that a stock/junkyard fan shroud would fit on my aftermarket radiator, or would say a heavier dutier hayden fan clutch pull enough air through? for the ac to work well even at idle? Any thoughts opinions or ideas are greatly appreciated also ive looked and there really is no room for a electric pusher fan either. Thanks guys

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Unread 06-22-2013, 09:15 AM   #2
super98lsc
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1999 WJ 
 
Join Date: May 2006
Location: Austin, TX
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swap in an electric fan from a Taurus. For the AC and low speed crawling it will be awesome for you. The AC condenser needs a lot of airflow to pull the heat and in turn pressure off the Freon after its compressed ie exiting the high side of the compressor. Without adequate air flow the head pressures will remain too high at low speeds and the air won't be as cold as it should. This is especially important with r134a as it works the compressor and condensing unit harder than r12 did. Mine blow 37-42 at the register on the road and 45 at idle. When I had the engine fan, new clutch and yes a complete factory shroud it would blow 58-63 at idle.
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Unread 06-22-2013, 10:01 AM   #3
olliehopnoodle
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What aluminum radiator do you have. I have a be cool and was able to modify the stock shroud to it pretty easy.
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Unread 06-22-2013, 02:10 PM   #4
89shaggoneer
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I have no idea what aluminum radiator it is its certainly heavy duty it came with it when I bought it, Also super98lsc are you running just a ford Taurus electric fan without regular fan? and that keeps you cool at idle?
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Unread 06-23-2013, 08:11 AM   #5
super98lsc
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Yes Taurus 2 speed fan and it keeps cool on low speed. above 35mph or so the fan never even comes on unless I am using the AC. Fan is always on with AC in all cars.
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77-Corvette Stingray 496 BBC/TH400 built 667hp+
===================================
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01 WJ 4x2 4.7v8 Limited (needs valve job)
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Unread 06-23-2013, 01:55 PM   #6
89shaggoneer
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Anyone have any experience with a hayden 2747 fan clutch and 6 blade fan? for pulling enough air for ac... really trying to stay away from having to build a fan shroud?
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Unread 06-24-2013, 05:35 PM   #7
olliehopnoodle
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A mechanical fan won't do you much good without a shroud. Take a couple of pictures of your radiator and post them. I modified my shroud to work with both a BJ's and a BeCool. It took a little patience but was effective. I know other folks that have built a simple shroud. Without a shroud your fan is going to mostly just move air around inside the engine compartment.
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Unread 06-24-2013, 06:21 PM   #8
89shaggoneer
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Thankyou I installed the hayden clutch and it dramatically moves more air but yes a shroud is still necessary, Located a guy with a bunch of fsj's hes parting out says he has one picking it up for 50 bucks not bad since a replacement is 185 shipped. Hopefully ill have the jeep nice and cool asap!!
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Unread 06-24-2013, 08:06 PM   #9
olliehopnoodle
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Cool. A dremel is your friend as you attempt to modify the shroud. If I remember its the trans lines and even the hose locations that had to be trimmed. Also pay attention to the mount ing holes. Make sure there is clearance for the top of the fan.
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