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post #1 of (permalink) Old 07-09-2001, 06:48 PM
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Suggestions on electric fans

All,

I am looking at replacing the stock radiator fan with an electric fan. Any suggestions as to what works best/easiest to install/cheapest/... I will be putting it into an '81 CJ7 with a 360. Thanks, in advance. - Jat o||||o

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post #2 of (permalink) Old 07-09-2001, 07:21 PM
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Re: Suggestions on electric fans

I have an '81 CJ7 also, but with a 350. I've been wanting to put an electric fan on mine too. It seems to me that if you get 2 smaller fans on the radiator, it would cover more actual square inches than 1 large fan and there-fore cool better. Hope that makes sense.

Does anyone out there have any tips for us?

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post #3 of (permalink) Old 07-09-2001, 07:27 PM
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Re: Suggestions on electric fans

Jat,
Do yourself a favor and keep the factory shroud and fan with clutch. You may loose a little power, but it is really the best. Also see about a 3 row radiator.If you need more detail on the reasoning behind this "theory" do a search on the subject.
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post #4 of (permalink) Old 07-10-2001, 09:49 AM
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Re: Suggestions on electric fans

Ricky,

I have a three row radiator with the factory shroud and it still runs "warm" I am afraid that it would overheat at wheeling speeds. Would a pusher style fan provide enough help? Just a thought... Thanks again everyone!

post #5 of (permalink) Old 07-10-2001, 10:01 AM
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Re: Suggestions on electric fans

Jat, you may want to check some things. Make sure you have a good t'stat. Robert Shaw makes an excellent one (Auto Zone has them).The high flow t'stats are nice. Remember no t'stat is worse. I also use "water wetter", it helps the coolant be more efficient.
Check your radiator for debris. Lots of times bugs and crap can choke a good radiator. I
s your fan/clutch relatively solid? Sometimes the fluid inside goes bad and the internal thermostat won't engage the clutch. A good way to check this is to spin the fan and see if there is any resistance. You may get one from the auto store and if it doesn't work any better take it back..
I can't answer your question about a pusher. Hopefully my ideas will help..
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post #6 of (permalink) Old 07-10-2001, 11:09 AM
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Re: Suggestions on electric fans

You might want to check your timing, could be too advanced. Do you run it off of ported or manifold vaccuum. You want electric fans because you think they cool better? Only real benefit is your able to turn them off for water crossings.

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