Aux Radiator Fans

John Vardanian · Post by **John Vardanian** » Sun Nov 21, 2004 2:14 am

Folks,

Any suggesstions on auxiliary radiator fans?

Last summer while waiting in the stop-go traffic of Crapo Italiano for nearly an hour my 250 overheated.

The surface of the radiator can accomodate a 16-inch fan it seems.

Thank you.

John Vardanian

jsa330 · Post by **jsa330** » Sun Nov 21, 2004 5:28 am

I've got a single aux fan in mounted in front of my radiator--it kicks on at 193F and works very well. I'll look for a manufacturers name and the size and post.

enio45 · Post by **enio45** » Sun Nov 21, 2004 9:19 am

John,

Summit racing has a nice selection included the dual fans setup that fits perfect for a 330 GT radiator. Also, calling them is helpful to discuss the ariflow and electical requirements.

Post by **tyang** » Sun Nov 21, 2004 9:45 pm

Hi John,

Almost any modern fan will put enough air through your radiator to help cool it down, provided everything else is in proper working order.

If this is the PF coupe you're fixing, does it have a thermostatic switch for the mechanical fan? I wired in a separate power source for the fan, and used the swiched source from the switch to power the relay for the electric fans.

Is there enough room in front of the radiator to hide a fan?

I used a flexilite fan.

Tom

John Vardanian · Post by **John Vardanian** » Mon Nov 22, 2004 12:52 am

Thank you everyone for your advice.

Tom Y, we are talking about the PF Coupe. The fan spins all the time, unlike your car. The inside plug engines have their dynamo spun from a gear in the middle of the camshaft sprockets. At the other end of the dynamo there is a pulley that spins the fan pulley via a short belt. The whole thing looks cute, but the action is heavy and pretty ineffective--probable burns quite a bit of hp. I'd like to remove the belt and put a 16-inch electric fan in front of the radiator.

This year I had the heater core bypassed due to a leak, which I think is the reason for overheating in Monterey. Though, I was stuck in stop-go traffic for close to one hour.

BTW, removing the heater core is a nightmare. The whole dashboard, steering wheel hub, driver seat, and the driver door (optional) need to come out.

john

zac · Post by **zac** » Mon Nov 22, 2004 1:00 am

if you have an import junkyard available check out the early 90's Audi V6 fan assembly. They have a very small profile and move all the air you could possibly need. I have been using them for several years on offroad race cars running in all kinds of conditions and extreme heat with no problems.

John Vardanian · Post by **John Vardanian** » Mon Nov 22, 2004 1:11 am

Zac,

What is the diameter of the Audi fan?

john

zac · Post by **zac** » Mon Nov 22, 2004 2:24 am

The fan itself is about 280mm(11 inches) in diameter but it is a dual fan assembly I would have to measure the actual unit to tell you the overall dimensions. the model is a 92-95 Audi 90 V6. I don't know if you have ever used these guys but they are a nationwide junkyard search engine that seams to be able to locate just about anything
www.car-part.com

jsa330 · Post by **jsa330** » Mon Nov 22, 2004 8:53 pm

I checked mine out : about 12 " diameter plastic fan, motor attached at lower center of X-brace in front of radiator, couldn't fing mfg. name.

John Vardanian · Post by **John Vardanian** » Tue Nov 23, 2004 12:24 am

http://www.autotechalarms.com/inc/pdetail?v=1&pid=2087

This is the fan I ended up with. It seems to have the highest cfm output and the price is less than Ebay.

john