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Operation: Airflow Snorkel Install

bknudtsen

NAXJA Forum User
Location
Issaquah, WA
The Mission: Installation of an Airflow Snorkel on a 2001 XJ

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The Target:

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The Area of Operation:

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Synopsis:

I recently installed a dual battery system, and this created a challenge in the area of air filtration. As you can see from the above picture, there is not much room left under the hood for a filter box. I did an exhaustive search of the Internet and Jeep forums and discovered the Apollo canister from http://knfilters.com/universal/apollo.htm. I thought that this was pretty slick and the dimensions seemed to be "right" for my needs. I ordered one from Summit Racing and waited about a month because it was on backorder. When I got it, I mocked it up in place and decided that the mission was a go. So, one more internet purchase later, I had a snorkel on my doorstep.

After action report:

First thing I did was to tape up the fender and locate the template, checking that everything lined up as best as it could.

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After I was satisfied that the template was lined up, I marked the four different locations that I would need to drill with a center punch. I made reference notes to remind me what holes went where.

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I then started the disassembly of my fender flare and inner fender guard.

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Note the windshield washer bottle in the above picture. The instructions say to remove this for better access, and to protect the bottle. I left it in because in order for me to take it out, I would have to remove my secondary battery, and that is a total PITA. If you don't have a second battery, then definitely take the bottle out. It will give you better access to the forward most bolt that holds the snorkel on.

Next....The moment of truth. Aww, fawk it. It's only a fender.

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I drilled out all the mounting holes with a 5/16" drill bit. I later decided that I wanted more wiggle room, and used my step-up bit to open all the mounting holes up.

Then came the 76mm hole for the snorkel tube. Now, like any well educated American male, I had no idea how much 76mm was, so I converted it to inches which came out to just under 3". Having read some other write-ups on this install, I decided to go with their recommendation, and used a 3 1/4" hole saw to make the cut.

The fender went pretty quickly, but when I hit the inner fender, the blade caught and almost broke my wrist. If you look closely at the 12 o'clock position of the second hole, you will see a spot weld. This proved to be a little challenging, as it needed to be broken so that the second layer could be removed prior to cutting through the third layer.

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After that it was a piece of cake.

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After fitting the mounting bolts with the supplied fender washers, I mounted the snorkel to the vehicle. I highly recommend just opening up the mounting holes a size or two, as it will make it way easier to get all the bolts in the first time.

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Then I took the a-pillar bracket and lined it up on the a-pillar. It is necessary to put a 90 degree bent in it, so I made a mark on it where the 90 degree bend needed to be and bent it over on my vise. I shot it with some flat black paint and loosely bolted it to the snorkel. I used my drill and made pilot holes for the self tapping screws. I then mounted the bracket to the a-pillar and tightened up the bolt to the snorkel.

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With the snorkel in place, I reassembled the inner fender guard and fender flare. Next on to the air filter.

Here's a look at the filter canister that I used. It has a conical filter inside and a port for the PCV. The inlet side is about the same diameter as the hose provided in the Airflow kit. The outlet is about the same size as the 90 degree elbow provided in the Airflow kit. (note: the elbow has two different diameters at either end. One fits the canister and the other fits the stock intake tube.)

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So, I used a short section of the hose provided with the snorkel and attached to the section coming through the fender. I then attached the other end to the intake of the canister. I used a silicone reducer that I had laying around to get a better bite from the hose clamps.

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I then took the 90 degree elbow from the snorkel kit and siliconed it to the outlet on the canister. (I will be adding some pop rivets in the near future for added security.) I attached the stock intake tube to the other end of the elbow and tightened everything down. The last thing was to hook up the PCV hose.

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Here is an overall shot. I think it turned out very well. Not very noisy at all either. I really can't say that I noticed a change in HP (seat of pants) from the previous setup.

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Status: Mission Accomplished.

Brad
 
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Nice K+N cannister. Where did you get it and how much?

Looks good.
 
bknudtsen said:
I recently installed a dual battery system, and this created a challenge in the area of air filtration. As you can see from the above picture, there is not much room left under the hood for a filter box. I did an exhaustive search of the Internet and Jeep forums and discovered the Apollo canister from http://knfilters.com/universal/apollo.htm. I thought that this was pretty slick and the dimensions seemed to be "right" for my needs. I ordered one from Summit Racing and waited about a month because it was on backorder. When I got it, I mocked it up in place and decided that the mission was a go. So, one more internet purchase later, I had a snorkel on my doorstep.

there is the link he posted and it takes you to dealers in your area.


couple quick google seaches and found these

http://www.4filters.com/Universal-C...L-70MM-OD-FLG-PP-SILVER_p_3-3076-reviews.html

http://www.treadstar.com/truckparts...=6327&osCsid=4df79149728f744565ec16a41c84bf02


the cheapest at 96.69
http://store.summitracing.com/partdetail.asp?autofilter=1&part=KNN-RC-5052AS&N=700+115&autoview=sku
 
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KSXJ said:
Very nice BK. What else are you doing to water proof the jeep for the those water crossings?

Thanks.

Right now the biggest problem is the transmission vent. It is the lowest point and also the biggest pain to get to. I have had water in the stock intake box from a low speed water crossing in Moab. Kane Creek, I think, but fortunately it did not get sucked up. Admittedly, at this point though, the snorkel is more poser than functional. There is a long list of stuff that needs to be looked at before I would consider it waterproofed. Computer, power distribution center, fans, etc.... One thing at a time. Plus, snorkels look so much cooler than an extended transmission vent line.

Brad
 
Looks really good. It is the same setup I am looking for. I have the diesel battery tray and two blue top optima batteries. I have been looking for a canister like that for a long time. I think I can get one from a 1997 Escort and make it work. I like yours but it is too much for me to spend right now.
What did you use to mount your computer right next to the battery? Just a sheet metal bracket? Any more pictures of that??

Kris
 
Kristof2 said:
Looks really good. It is the same setup I am looking for. I have the diesel battery tray and two blue top optima batteries. I have been looking for a canister like that for a long time. I think I can get one from a 1997 Escort and make it work. I like yours but it is too much for me to spend right now.
What did you use to mount your computer right next to the battery? Just a sheet metal bracket? Any more pictures of that??

Kris

That is a battery tray from WranglerNW. It has a bracket built into the tray for the computer and battery isolator.

Brad
 
Neat install and glad the snorkel install went so well. I still get nervous when I see a fitment posted that all was OK with the instructions I wrote and template I made for that snorkel!!! ;)
Mind if I post a picture in my write up on my site showing which filter you used to help others with a dual battery?
 
Gojeep said:
Neat install and glad the snorkel install went so well. I still get nervous when I see a fitment posted that all was OK with the instructions I wrote and template I made for that snorkel!!! ;)
Mind if I post a picture in my write up on my site showing which filter you used to help others with a dual battery?

Your site is what I used to help plan my install, so it would only be fitting that I contribute something back. Whatever you need, have at it.

Cheers,

Brad
 
That is a battery tray from WranglerNW.
***********

They are very proud of that tray.

Specifically, what is "the diesel tray"? I can assume it is a tray from a diesel XJ, but that is either euro or a one year model. Specifically, what year, what availability and what part number?

Thanks
 
Shogun said:
That is a battery tray from WranglerNW.
***********

They are very proud of that tray.

Specifically, what is "the diesel tray"? I can assume it is a tray from a diesel XJ, but that is either euro or a one year model. Specifically, what year, what availability and what part number?

Thanks

Great job :clap:

One question; What is a WranglerNW?
 
bknudtsen said:
Your site is what I used to help plan my install, so it would only be fitting that I contribute something back. Whatever you need, have at it.

Cheers,

Brad
Thanks mate. Have used a couple of shots and credited you with the idea. ;)
 
Shogun said:
That is a battery tray from WranglerNW.
***********

They are very proud of that tray.

Specifically, what is "the diesel tray"? I can assume it is a tray from a diesel XJ, but that is either euro or a one year model. Specifically, what year, what availability and what part number?

Thanks

Here you go:
http://www.madxj.com/MADXJ/technical/technicalfiles/ARbattRelocation/BattRelocation.htm

The part number is: 5517 4970

Call your dealer they should be able to get it. My local dealer couldn't but they could look on the computer and gave me the number to a dealer that had it. You do have to cut a small part out on the bottom but other than that it fits good.

Kristof2
 
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