How bout when it rains? Does it affect it any? Just havin problems with the filter sittin there in that little open compartment.

 

I have this Cowl intake.

The filter element is actually protected in the cowl. There is no opening directly above the filter element. There are drains on the bottom sides of the cowl.

With the K+N open style filter in the engine compartment, Don't you think water gets thru the headlight bucket area and thru radiator and get the filter wet?

And yes it is a bit loud on initial start up and brisk acceleration. OK cruising.

 

Water isn't the problem. The problem is dust. In dusty/dirty conditions, small debris will go down through the mesh on the driver's side and get sucked right into the filter.

You may not think you live in dusty conditions. However, if you park under a tree and get leaves, twigs, acorns, those little powdery oak flowers or anything like that on the mesh, that organic matter will give off dust and flakes that will fall through the mesh, go right into the filter and clog it up. If a bird ****s on that mesh, the **** will dry, break up and become dust that will go right to your filter. Pollen season is pretty bad, since it's impossible to keep pollen from falling right on the intake mesh. Even slender leaves and twigs can make it through that mesh and end up in the filter.

I have a Spectre cowl filter on mine, which has the filter inside a pill-shaped filter box in the engine bay. I got one of the K&N filter socks, cut a square of it to fit the flange on the firewall and installed it as a prefilter to keep the crap out. Periodically I pull it off and clean it, and it usually has junk on it that would have gone into the filter.

If I were running the Thor design that has the filter inside the cowl, I would get a prefilter sock to put over it. If you keep your Jeep outside, it's also not a bad idea to have something to put over the cowl mesh when you're not driving it to keep leaves and garbage from accumulating on the mesh.

 

I built my own, but have yet to install it. I think the filter may be too big for the cowl. I just cant seem to find a decent filter in the right size. I'd hate to not be able to use this one... It's an AEM.

 

seems like it would just suck in all the hot air coming off the hood or out the vents, if any in the hood.

 

The cowl on a car is always a low pressure point,And the reason cars like nascar use it for a intake.And heat rises so any heat from the hood or vents on the hood would probably blow over the low pressure point if your moving.Sitting still/crawling maybe but i doubt it would change the intake temp any or if it does maybe 5 degrees not enough your engine will know.

 

It's supposed to provide higher pressure from air being stacked up against the base of the windscreen. Lower pressure would reduce engine performance in the race cars that use cowl induction. Cabin air intakes are put into the cowl to help push cooler air through the ventilation system at cruise speed.

 

If the filter is too long to fit in the cowl space, you might be able to put another 90 on there and let it sit sideways for more room.

 

 

Show us your filter!

 

​​​​​I will first thing in the morning. It's from Spector the company that used to make the cowl intakes.

 

I've had this one installed for 5 years now and it's been fine. Only cleaned and re-oiled twice in that time, and it's only been a little bit dusty. I wouldn't call it noisy, but you do hear a little bit of air movement while the engine is warming up to operating temp and when you're getting on it between 2-3K RPM.

 

 

This can be pieced together with the smaller Spectre parts. You'll need Part Numbers (in order from intake to cowl) 8698,8698,8705,97611,9832,97611,8698,8708.

 

I would look at my picture and use a few parts from the junk yard. It can get really expensive if you buy all the 90s and stuff from Spector. I did my whole intake for about $120. All I bought was the 3" inline filter, 3 - 3" couplings, a 3" flange plate and a 6" piece of 3" intake tube. All off Amazon.