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Unread 07-31-2011, 09:21 PM   #1
VACJ7
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Contour fan... something to be said for dual fans.

After about 2 years running my junkyard Contour fan one of the fans completely let loose while diriving yesterday. The fan itself came apart with plastic flying everywhere. Not sure if something bounced off the road into it or what. Sounded like a machine gun under the hood. I unplugged the busted fan and ran the rest of the way home on just one of the fans.

It was 100* yesterday when it went. Had to drive about 10 miles in traffic and the one fan was able to keep my temp at 215 - 220 max. It was working overtime and although my running temp was higher than I would have liked it got me home without over heating. Unfortunately it does not appear you can buy a replacement fan so I guess it is back to the junk yard.

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Unread 08-01-2011, 12:44 AM   #2
Cutlass327
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That is a plus of the dual fans. Makes ya wonder just what happened!

I'm trying to decide if I can fit a electric fan in there, it looks close for some reason that it might not fit in mine. I'm not sure if I want the single Taurus fan or the dual Contour one..
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Unread 08-01-2011, 02:25 AM   #3
Matt1981CJ7
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Ummm...what's a "contour fan" and why is it preferred, especially if they break easily?

Matt
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Unread 08-01-2011, 04:23 AM   #4
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Redundancy is cool

Matt,

A lot of guys get the Ford Contour fan from the junkyard, it is almost a perfect fit.

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Unread 08-01-2011, 08:15 AM   #5
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Quote:
Originally Posted by VACJ7 View Post
After about 2 years running my junkyard Contour fan one of the fans completely let loose while diriving yesterday. The fan itself came apart with plastic flying everywhere. Not sure if something bounced off the road into it or what. Sounded like a machine gun under the hood. I unplugged the busted fan and ran the rest of the way home on just one of the fans.

It was 100* yesterday when it went. Had to drive about 10 miles in traffic and the one fan was able to keep my temp at 215 - 220 max. It was working overtime and although my running temp was higher than I would have liked it got me home without over heating. Unfortunately it does not appear you can buy a replacement fan so I guess it is back to the junk yard.
-----------------------------------------------

Quote:
Originally Posted by Matt1881CJ7 View Post
Ummm...what's a "contour fan" and why is it preferred, especially if they break easily?

Matt
Matt,
The electric fans take a TON of vibration and stress off the mechanical water pump to start with!
Pumps will last MUCH longer with electric fans.

Electric fans take a lot of drag off the engine in general.

Dual fans have 'Redundancy', if one quits, you don't loose the entire cooling system like you would if say, a fan clutch quit working and the fan wouldn't turn.

These fans are normally NOT failure prone!
The only failures I've seen are from crash damage, a crack you don't see when you install.
I don't know why the OP's fan came apart, but everything fails at some point, it's just a fact of life, and if you don't prepare for it, you WALK HOME.

With his 'Dual Fans', NO WALKING IN THE 100 Degree heat!
No $300 tow bill to get the vehicle home...
Unplug the 'Bad' fan and DRIVE HOME to work on it! REDUNDANCY is a WONDERFUL THING!

I honestly haven't heard of any failures like this unless the fan was cracked when they got the fan out of the salvage yard...
My 'little woman' had a Ford Taraus wagon that went 350,000 miles on the fans with NO ISSUES at all.
They are RELIABLE above all else, and the redundancy factor is a big plus!

------------------------------------

I preach REDUNDANCY, but people think it's 'Over Kill'...

I run two fans, two fuel pumps (Second fuel pump started out as an electric transfer pump so I could fuel farm equipment... Evolved into a secondary pump for the Jeep engine when the mechanical pump quit without warning one day and I didn't want to walk home!)

I have two batteries, that lets me get home when the alternator quits without carrying a second alternator,
And it helps out with welding, winching, tools, ect.

Since I have two batteries, I have two starter relays to feed the starter.
One battery or relay can be MISSING from the vehicle and it still starts/runs just fine!

Not as 'Pretty' or as 'Sexy' as a bunch of Chrome or crap with 'Skulls' printed on them, or stuff hung on there with big name brand stickers on it,
But it keeps me from walking home in the heat/snow and the vehicle gets a lot of work done on top of that!

Even my mechanical fan has an even number of blades.
If one is damaged, I can break it off, and the one opposite to it off and get home...

So far, none of the 'Support Systems' to the engine have left me walking in some time (Knock Wood! ) so it's working out for me...
Can't sell it as a home game, but it works for me!

The ONLY thing I haven't figured out is how to install two WATER PUMPS!
If the water pump fails, I'm SCREWED!
That's a pretty big job to do along side the road or in a mud pit somewhere!
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Unread 08-01-2011, 09:30 AM   #6
82KansasCJ
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If I switch out my fan it will be for the contour fan. This is just one more +
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Unread 08-02-2011, 01:17 AM   #7
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I find the CJ an easy vehicle to work on compared to anything post 1990, most things that break are easily accessible and are simple to understand. The only question then is whether I carry the spares or the tools.

Having two of something on the vehicle is fine, I mean I have five wheels for a burst tyre so why not? Having them ready mounted and plumbed is indeed a bonus but is this better than getting a more durable part?

However I agree the fuel pumps, ICMs, electric fans etc. are all unreliable to an extent, small in cost and size and for a small amount of effort can be duplicated. These are not Space Shuttles.
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Unread 08-06-2011, 02:54 PM   #8
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Found a replacement unit from a Mystique in the junk yard and the guy only charged me 25.00! I see why the other one failed. It looks like there may have been a crack in the fan I did not see when I installed. AND, apparently it had been rubbing slightly on the shroud. Took almost two years to fail. New one installed and now I have a spare set of motors in case one of those fail.
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Unread 08-06-2011, 03:07 PM   #9
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The ONLY thing I haven't figured out is how to install two WATER PUMPS!
If the water pump fails, I'm SCREWED!
That's a pretty big job to do along side the road or in a mud pit somewhere![/QUOTE]

I realize you probably have already considered this but what are your thoughts on booster electric water pumps? Heres an example.

http://www.daviescraig.com.au/Electric_Water_Pumps-content.aspx

Also I'm considering the Contour fan conversion along with a electric drive conversion, for the water pump, for mileage gain purposes and to cool down the engine when the engine is shut off. something like this.
http://www.jegs.com/i/B-B/128/54950/10002/-1?parentProductId=1538515

I figure I could keep the old pulley and belt in the jeep in case the electric motor quits. Maybe even add the booster pump for redundancy. Any thoughts?
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Unread 08-07-2011, 08:33 AM   #10
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anyone have a write up or pics of these fans installed?
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Unread 08-07-2011, 12:31 PM   #11
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Several write ups on them, search around or start a thread asking for pictures of the Electric fan installs...
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Unread 08-07-2011, 12:32 PM   #12
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Quote:
Originally Posted by berserk71 View Post
The ONLY thing I haven't figured out is how to install two WATER PUMPS!
If the water pump fails, I'm SCREWED!
That's a pretty big job to do along side the road or in a mud pit somewhere!
I realize you probably have already considered this but what are your thoughts on booster electric water pumps? Heres an example.

http://www.daviescraig.com.au/Electric_Water_Pumps-content.aspx

Also I'm considering the Contour fan conversion along with a electric drive conversion, for the water pump, for mileage gain purposes and to cool down the engine when the engine is shut off. something like this.
http://www.jegs.com/i/B-B/128/54950/10002/-1?parentProductId=1538515

I figure I could keep the old pulley and belt in the jeep in case the electric motor quits. Maybe even add the booster pump for redundancy. Any thoughts?[/QUOTE]




I didn't read the links but quick thinking here I don't know how many GPM you would need but if you put a T in the radiator hose and an adapter to T into the temp sensor hole you might be able to get a marine 12v water pump with a non rubber impeller and wire it like the fan to run after shut down to a certain temp, have it off, or continueous.
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Unread 08-07-2011, 02:21 PM   #13
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Do you mean bilge pump? If so, I think that would work for a while but the high temperature and coolant might eat it up eventually. The link I posted also has some informative videos I would advise watching. It looks like they have it all figured out. I like the thermostat controller. It has a pulse mode for the water pump and activates the fan as well.

As for the Contour fan, I just purchased one. I was looking at the Taurus fan but this thread sold me on installing dual systems when ever possible.
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Unread 08-08-2011, 07:30 AM   #14
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No not a bilge pump they are more like transfer pumps I don't think the heat would bother them they aren't plastic. Thinking again the sensor location wouldn't be a good spot for an inlet, maybe taking out a freeze plug and welding or tapping a bung in there with a pipe inlet so the water went in the bottom of the block and flowed up. At any rate you could tap into the block pretty much anywhere by drilling a hole a pipe thread tapping it. If you weren't going to use it just cap the pipe off. I wonder what the gpm rating on a stock water pump is? or maybe go by one of the ratings for an electric one that would probably be more than a stock pump. It's a back up system so even if it wouldn't run as normal but would run enough at low rpm to get you home would be the goal. A few options http://www.systemacc.com/catalog/ind...h/21_2138_2139
http://www.systemacc.com/catalog/ind...FcE42godvDJR7g
http://www.flojetshop.com/flojet-mar...-system-pumps/
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Unread 08-08-2011, 07:44 AM   #15
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What years were the double Contour fans made?
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