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Go Back JeepForum.com > Models > Jeep Cherokee & Comanche Forums > XJ Cherokee Technical Forum > My attempt at a cowl snorkel.

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Unread 03-14-2009, 11:20 AM   #1
srmitchell
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My attempt at a cowl snorkel.

I recently got a second intake hose from a wrecked xj, so I got inspired to finally make a cowl snorkel. There's a good amount of water crossing where Im moving next year, so why not.

Parts-
About 3 feet of straight, black pvc 3 inch pipe.
One sharp 90 degree elbow
One normal 90 degree elbow
One factory air tube elbow (from the air cleaner to the TB)

I cut a hole in the cowl, and a hole in the filter box, and figured out the best way to put it all together.

Already, I can feel a HP increase, and I can hear the air it is sucking.
I still need to block off and seal the front of the air box.






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2001 XJ, patriot blue, 4 inch RE lift, IRO long arms, 33's. Caged, locked, armored -Trail Rig
2004 WJ Special Edition, Silver, 3 inch IRO lift, 4.7, JK graphite moab wheels/SRA's- Mom's dd
2004 WJ Overland, Onyx Green, 90% dechromed, soon to have JK moab's, BFG MT's, and a 3 inch IRO lift My new DD/ project
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Unread 03-14-2009, 11:25 AM   #2
jakemary
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thats diffrent would water comming over your hood get into the air intake?
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Unread 03-15-2009, 10:44 AM   #3
srmitchell
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Yeah, thats possible, however, I don't intend on going through more than 2-3 feet of water, ever.

When dropping into a crossing, your grill and lights tend to dip pretty low, then level out, this adds some piece of mind, as the factory intake is very low, and right behind the lights.
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2001 XJ, patriot blue, 4 inch RE lift, IRO long arms, 33's. Caged, locked, armored -Trail Rig
2004 WJ Special Edition, Silver, 3 inch IRO lift, 4.7, JK graphite moab wheels/SRA's- Mom's dd
2004 WJ Overland, Onyx Green, 90% dechromed, soon to have JK moab's, BFG MT's, and a 3 inch IRO lift My new DD/ project
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Unread 03-15-2009, 11:08 AM   #4
nrpalmer32
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I like that idea, I've been trying to think of something like that as well. I know that some people even continue that pipe over to the other side so that rain doesn't effect it as well. I have been trying to think of a way to make a short hmmwv style snorkel for mine. The problem is that I would have to actually cut the hood a bit to do what I am wanting, but the hinges for hood are where I am wanting to do it. Probably not going to happen the way I am wanting to do it. I like your idea as well with the hard pvc pipe.

Im also guessing your already planning on closing the front part of the box right

I was wanting to mod an intake with something like this.

Last edited by nrpalmer32; 03-15-2009 at 11:27 AM..
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Unread 03-15-2009, 11:28 AM   #5
srmitchell
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Yeah, I really don't like cutting sheet metal. I love the look of an un cut, un hacked xj, so all my mods are pretty reversible, or not visible.
Since my jeep is only 8 years old, and Im only 17, I've got lots of time to trim fenders, make a rear snorkel, go doorless, cut stuff, all of which are somewhat irreversible.

So Im digging the totally stock look, and then you look underneath, and big surprise.
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2001 XJ, patriot blue, 4 inch RE lift, IRO long arms, 33's. Caged, locked, armored -Trail Rig
2004 WJ Special Edition, Silver, 3 inch IRO lift, 4.7, JK graphite moab wheels/SRA's- Mom's dd
2004 WJ Overland, Onyx Green, 90% dechromed, soon to have JK moab's, BFG MT's, and a 3 inch IRO lift My new DD/ project
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Unread 03-15-2009, 11:33 AM   #6
Goldenknob
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looks great man.. does it restrict your instant throttle?
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Unread 03-15-2009, 11:41 AM   #7
nrpalmer32
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Yeah, definitely keeping it clean is a good look, I want to keep it somewhat clean looking, thats my prob with the hmmwv intake, it'd take some modding. Yours seems good though and let us know how it works for you!
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Unread 03-15-2009, 06:13 PM   #8
srmitchell
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Thanks. Yeah, I really like it. Plus, the tube was about 5 bucks, and the intake hose was free, so this was a very economic mod.

Oh, and of course, eventually I will seal the front.

And Goldenknob, it does NOT restrict it, in fact, I feel quite a bit of power increase.
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2001 XJ, patriot blue, 4 inch RE lift, IRO long arms, 33's. Caged, locked, armored -Trail Rig
2004 WJ Special Edition, Silver, 3 inch IRO lift, 4.7, JK graphite moab wheels/SRA's- Mom's dd
2004 WJ Overland, Onyx Green, 90% dechromed, soon to have JK moab's, BFG MT's, and a 3 inch IRO lift My new DD/ project
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Unread 03-15-2009, 07:21 PM   #9
bdb12586
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Quote:
Originally Posted by nrpalmer32 View Post
I like that idea, I've been trying to think of something like that as well. I know that some people even continue that pipe over to the other side so that rain doesn't effect it as well. I have been trying to think of a way to make a short hmmwv style snorkel for mine. The problem is that I would have to actually cut the hood a bit to do what I am wanting, but the hinges for hood are where I am wanting to do it. Probably not going to happen the way I am wanting to do it. I like your idea as well with the hard pvc pipe.

Im also guessing your already planning on closing the front part of the box right

I was wanting to mod an intake with something like this.

not to hijack the thread but here is what I came up with
http://www.jeepforum.com/forum/f177/my-version-hummer-intake-701415/
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Unread 03-15-2009, 07:45 PM   #10
srmitchell
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No worries, looks good.
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2001 XJ, patriot blue, 4 inch RE lift, IRO long arms, 33's. Caged, locked, armored -Trail Rig
2004 WJ Special Edition, Silver, 3 inch IRO lift, 4.7, JK graphite moab wheels/SRA's- Mom's dd
2004 WJ Overland, Onyx Green, 90% dechromed, soon to have JK moab's, BFG MT's, and a 3 inch IRO lift My new DD/ project
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Unread 03-15-2009, 09:36 PM   #11
Tweeternpi
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I would love to do something like that, But my Jeep has ABS. And the ABS is right behind the air box!! Looks good by the way.
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Unread 03-15-2009, 11:34 PM   #12
EricsXJ
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That looks good.

I will say there won't be any problem with rain water with the intake at that location. Heck you could probably splash a bunch of water up onto the hood and into the cowl and it will still be fine.

I'm in the process of changing mine from the traditional ARB snorkel to a cowl snorkel also however I am going with a cone filter inside the passenger side cowl. My only concern is how loud it will be with the filter in there. I got most of it done yesterday, but am now back into the work week so it probably won't be done until Thursday.
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Unread 03-16-2009, 06:46 PM   #13
srmitchell
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Thanks.

Yeah, water isn't a problem, the face of the cowl/ firewall is angled similar to the windshield angle, so it won't act as a bilge pump or anything.

I think I recall you saying you were getting rid of the arb snorkel. Is there a specific reason?

Oh, and as far as sound goes, it growls a lot when it starts cold, but once you throw it in gear it quiets down.
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2001 XJ, patriot blue, 4 inch RE lift, IRO long arms, 33's. Caged, locked, armored -Trail Rig
2004 WJ Special Edition, Silver, 3 inch IRO lift, 4.7, JK graphite moab wheels/SRA's- Mom's dd
2004 WJ Overland, Onyx Green, 90% dechromed, soon to have JK moab's, BFG MT's, and a 3 inch IRO lift My new DD/ project
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Unread 03-16-2009, 06:54 PM   #14
srmitchell
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A completed pic.
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2001 XJ, patriot blue, 4 inch RE lift, IRO long arms, 33's. Caged, locked, armored -Trail Rig
2004 WJ Special Edition, Silver, 3 inch IRO lift, 4.7, JK graphite moab wheels/SRA's- Mom's dd
2004 WJ Overland, Onyx Green, 90% dechromed, soon to have JK moab's, BFG MT's, and a 3 inch IRO lift My new DD/ project
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Unread 03-16-2009, 11:10 PM   #15
EricsXJ
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Quote:
Originally Posted by srmitchell View Post
I think I recall you saying you were getting rid of the arb snorkel. Is there a specific reason?
It will be in the way of the cage I'm going to build. I don't want to go back to just a stock exhaust or exposed cone filter and I still want the fording capability of a snorkel.
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