jrhockey03

I had a thought on those computer fans if you mounted them under the hood vents and had them on a switch it would push more hot air out. I see them at princess auto all the time for about 4 or 5 bucks. I know they might get toasted with rain, but I thought it might be worth a shot?

Just throwing it out there... if you don't like it you can throw it right back.

FrankSchmeiser

I think that rain and heat would destroy those little fans but give it a try and let us know how it works out.

GTABurnout

I have thought about it as well in AZ the rain is pretty predictable so I would have time to protect it. May be worth a shot...

jrhockey03

I saw some today that were all metal so I guess all I'd have to worry about is the rain... hmmm... I may just buy one and spray some water on it before I go through the trouble to install it...

prerunner1982

Just dont turn them on in the rain. Eventually they will corrode or rust but atleast it wouldnt short circuit.

jrhockey03

I guess I'm going to have to install the vents first before I can try this out.

a1racer

just run the hood vents if you are having an over heat issue this small of fan will have no effect on a car or jeep they are way to small to flow enough air to be helpful

jrhockey03

I don't have any overheating issues yet. I was just curious as to how good they would work. They are 6"x6" or they even come in 8"x8".

Mattpar

I'd probably run a perma cool 6 or 8" fan mounted on the hood and cover it with a duct vent[they have ones that look like a cowl but i cant find a picture of one] from a hardware store.

a1racer

yeah some thing like that 3400 cfm might make a difference but it is just a wast of time to rig some thing like this up. if you just put the vent on you will get a low pressure effect that will pull more heat out then adding the fan would. but i would still like to see one rigged up and do a vent only test and then one with the fan to see if it makes a differance

Mattpar

also, i dont think adding a hood vent/fan will help with any overheating issues. I dont think I've come across anyone saying they solved their overheating issue by installing hood vent. If your jeep starts overheating, there is something else that is causing it.

solderjunkie

You can buy 8" cooling fans that are made for autos... they are weather-tight and will move a lot more air than those wee computer fans.

prerunner1982

This mod isnt meant to fix an over heating problem. The engine bay of an XJ gets very hot and the air doesnt escape well. The hood vents let the hot air leave the engine bay. This is never a bad thing.

Desertfox1023

Hood vents do help with cooling as it allows for hot air to be moved out from under the hood instead of making an oven. It really depends on your heating issue and how big of a vent you use. They can help keep it 20 degrees cooler under the hood. The motor it's self may only cool off a little bit. It's main purpose is to allow cool air in while pushing out hot air when traveling at low speeds. Search the internet there are lots of write ups where they've helped.

Mattpar

Throw a cowl on it! Scored that in the junkyard for $40. Harwood fiberglass 4" cowl. Ended up being too long and i sold it.