My Mustang has a warmed over 302 and AC and currently everything works fine, except for when its 100 or so degrees outside. Then it starts to run a bit too warm when sitting at stop lights. Its about 205 degrees. Thats with the AC off. When the AC is on, it doesn't really seem to make a significant difference, maybe 210. The rest of the time even if its 90 or so outside, it runs at about 190 give or take.

I have a not so normal application and can not seem to find anything that will fit in the space I have to work with.

My 65 has a Fluidyne direct fit 5.0 swap radiator that is about 1 inch thicker than the stock radiator. I also have the thicker composite shroud. I'm currently running a reverse rotation 16 inch Flex A Lite flex fan. I'm not real big on this setup although it does seem to work pretty well. I would like to find a better fan setup.

I am looking for a reverse rotation clutch fan that will fit in the tight space between my water pump and radiator which is about 3 inches. Is this possible?

I have looked at electric fans and can not find any that move enough air that will fit. So, I'm looking at other options.

I guess if a clutch fan wont work, I may have to go back to a fixed blade fan, although I don't want to do that.

 

You should be able to get a thermal clutch fan in there. My Explorer has a reverse rotation thermal clutch. Compact clutch, small diameter fan, should work very well for you.

 

That would be nice if an Explorer one would work, but I have a feeling that the clutch is more than 3 inches long.

I saw one on Ebay, and I don't see how it mounts to the water pump pulley.

I was wanting to use one of these clutch fans. I was leaning towards the Derale because its all steel. The Flex A Lite has aluminum blades.

http://www.summitracing.com/parts/DER-17917/
http://www.summitracing.com/parts/FLX-5917/

I may have to just go with this.
http://www.summitracing.com/parts/DER-17417/

I need a shorter than stock fan clutch. Does anyone know of a place that you can order shorter ones? Summit and Jegs don't list many options.

 

I run a 19" flex-a-lite fan with a big block shroud. It works great! Anything you can do to get more air flow is a good thing. I reworked the A/C condenser mounting so air could flow through easier and that helped a bunch too.

 

The reverse rotation thermal clutch fan on my 39 measures 3 1/4" from the water pump flange to the front of the clutch, I am about sure that you could get a thinner setup, but there are not many dimensions posted online.

I am running a 1" spacer to clear the decorative pulley covers on my A/c and alternator, but I think I could ditch the spacer if I were to remove the pulley covers. I imagine if everything went just right, my setup could fit in a 3 3/4" space.

http://www.summitracing.com/parts/HDA-2841/?rtype=10

If you could find the waterpump drive for this clutch it might fit for you, it looks fairly compact.

 

The problem I have found when running the serpentine setup, is that getting a shorter fan clutch puts the fan into the pulleys.

You are in a tough spot. I've been there a few times myself. If you only see 210 at the lights, you aren't *that* bad.

May I suggest getting adding a pusher fan from a Mercedes at the wrecking yard? They run fairly slow, don't pull a lot of amperage, but make a big difference when sitting at the stop light. They are pretty easy to mount and wire up too. Painted flat black, it's not too noticeable. And they are not so obtrusive, as to block the airflow when motoring on down the road. They are also pretty cheap at the wrecking yards.
There are other options, like sliding your engine back, but that may involve shortening the driveshaft, which adds to the cost.
Here is a link where I did just that.
http://www.cardomain.com/ride/240020...mustang/page-8
You could add an engine oil cooler.
I have read (no personal experience on this) that either the Explorer, and/or the 94-95 Mustang, have a more compact front serpentine setup. It may be worth exploring (no pun intended). Not sure how much you'd have to change to make that work, or how much extra room you would get.

Good luck!

 

I haven't been able to figure out how the water pump drive works on the Explorer type clutch. I don't even know what it looks like or how much length it adds.

 

I know that the flex fans can get the job done. I just don't care for or trust them all that much.

 

Good idea on moving the engine farther back. I have actually already done that by about 1/2 inch. I have the adjustable RMP motor mounts.

I wonder what the fan diameter is of the Explorer or 94-95 Mustang is. That would be nice if the clutch was shorter. I thought that 94-95 Mustang GT had electric fans.

 

205-210 is good operating temperature. My car runs at that temp most of the time. If it starts to creep up past 220, start worrying.