Hey Gang,

I need your help on a few specifics for an electric fan install. Everything on my 65 Coupe if fine, but I'm trying to see if I can run a bit cooler in traffic during the hot summer months.

*What electric fan are you running? (please be specific with make and model number)
There seems to be limited space between the radiator and the water pump pulley. I have about 3 1/2" of space. Most fans (especially in a radiator / fan kits)spec out at 3 1/2" or 4" on the fan and this is in addition to whatever thickness the radiator is. I know there are thinner fans out there so what is your combination?

*How much space do you have between the back of the electric fan and your waterpump pulley?

* Is your fan centered on the radiator or offset for more space?

* Where are you pulling your power source from to run your fan?

Thanks for your help.
MXG30

 

I run a flexalite black magic

it is nearly center on the rad

Clearance between the fan motor and water pump is nearly zero. I had to cut the output shaft on the water pump until it was flush with the face of the pulley for it to fit right.

It was 104 ish yesterday and it never broke a sweat in traffic. I also run a northern direct fit 3 core Al rad.

-Gun

 

Might consider a Pusher fan to assist the engine driven fan.
If you have the stock width radiator, there are few fans thin enough to provide the air flow you need, and still take advantage of the entire core inside a shroud. Lots of great pusher fans available at the wrecking yard (we did this for my buddies Scout, and it works awesome).

Another possibility is to cut the recess out of the stock radiator support, which allows the radiator to be pushed forward, and also gives an opening for a larger radiator. This can be very efficient, as you can install a pretty large cross flow radiator.

I had the same issue with space (due to the supercharger install, and thicker radiator).
Not sure my setup will help you, but I'll attach links to pictures, just in case it gives you ideas.
I grafted in a '67 radiator support, and used a Griffin '68 big block aluminum radiator. Then used an updated '68 shroud as a base to mount the fans. One fan (same side as A/C condensor) sits right on the core, the other mounts to the outside, and pulls air from the rest of the core. Each Maradyne fan (PN MK 122K, 12" x 3.19" deep) is rated at 1565 CFM. I'm estimating the pair in this configuration moves approximately 3,000 cfm. Hooked through separate relays, powered off the charging wire from the Alternator w/8AWG. Control is handled through the EEC-IV PCM (with a programmer), and I installed a backup temp switch at the rear of the intake manifold, incase the programmer fails.

Pictures of this is here, and I can give you details, if it helps.
(I'd just attach the pictures, but they make the post way too big)
http://i104.photobucket.com/albums/m...t/IMG_1734.jpg
http://i104.photobucket.com/albums/m...t/IMG_1740.jpg
http://i104.photobucket.com/albums/m...t/IMG_1741.jpg
http://i104.photobucket.com/albums/m...t/IMG_1727.jpg

Hope this helps,

 

Gun and Scott,

Thank you for you replies and help. As I firgured it will be tight and more than likely I will have to modify

Thanks for the pics (always worth a thousand)

We've had a hotter than usual summer here in Florida and I've had to put off driving my stang when I encountered line lock (vapor) and saw the temp gauge climbing fast while sitting in traffic. As long as I'm moving I'm fine.

Thanks again for your help!
MXG30

 

I am using a 16 inch fan from Speedway Racing.
http://www.speedwaymotors.com/Chrome...Fan,20447.html

Pictures of my install on the 66:
http://chris66dad.tripod.com/id39.html

 

Thank you chris66dad,

I've seen soome of your other post maybe on another site or two. Thank you for sharing your wealth of knowledge.

As Yourself, Gun Jam and Scott H have shown me, the clearance is tight and I'm ok with that. I just wanted to know if I was on the right track.

Thank you again so much. I'll post up pics when I get everything together.
(may take a lil while cause I'm a solo act)

MXG30

 

If you're just trying to run cooler on a hot day, you'll get much more bang for the buck by going to a larger radiator (more rows). The factory units were marginal at best.

I have heard you can free up some horsepower by going to an electric fan though. Anyone
notice any more power after the conversion?

 

I am using a Zirgo puller on my 331 in my 68 with a 20" rad that has been recored with high efficiency three tube core. The Zirgo is a low profile motor.

http://www.thehoffmangroup.com/autol...?itemid=ZFU16S

I have about 3/4" clearance between fan motor and w/p pulley. The power for the fan is from a relay on the apron fed directly from the battery with 8gauge wire, controlled by A Painless Wireing T-stat.