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New Air box mod!!

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Old 03-09-2008, 03:09 PM
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Default New Air box mod!!

ok here it is:

Approximated time:30 to 45 mins,, depends if you are a fast or slow worker
Approximated difficulty: well I did it, so in a scale of 1 - 5 it will be about a 1.5

Materials:
power drill
1 1/4" drill bit
about 6-7' of 1" plastic tubing
vacuum cleaner
duck tape
silicone
hand saw
1/2" socket wrench



Process:

1) take of the top of the air box and filter, put it aside
2) take of the lower air box 3 nuts, 1/2" socket
3) decide where you want to cut your holes, and seal the front stock hole with duck tape
4) drill the desire holes on the lower air box and clean the plastic shaving
5) on the driver side of the fire wall,, select where you want to drill and check for clearance and safety, check if there is nothing back there
6) once you have drill your holes,, clean up the metal and plastic shavings with a vacuum cleaner
7) starting from fardest to closest measure and cut, then start putting your tubing lines and seal them with the silicone,, on the air box from both sides and on the fire wall from engine bay side,,MAKE SURE ITS SEAL REAL GOOD, the point is to get fresh air if you dont seal it right hot air will get it..
8) once is all sealed up, step back, appreciate your work and let it dry..
9) remember to put back your filter and air box top

finish product




here is a look of the tubes in the lower air box



here is a look of the tubes leaving the lower air box



here is a look of the tubes entering the fire wall



and finally a pic of were its getting the fresh air from



enjoy, hope it helps and any question feel free to ask

Last edited by Belto; 03-10-2008 at 09:45 PM.
Old 03-09-2008, 03:21 PM
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I've seen this done with 3" PVC and a elbow in the cowel area, so my buddy could put a Cone filer on it so it had a pre-filter....

Nice write up, plaining to do something like this to my ZJ come spring..
Old 03-09-2008, 03:21 PM
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stickied, nice work.

-Kyle
Old 03-09-2008, 03:22 PM
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thanx every1, hope to help
Old 03-09-2008, 04:13 PM
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Whats the temp rating on that plastic tubing? If its the tubing im thinking of that you got at Home Depot, you should have holes in it shortly from the exaust manifold heat.
Old 03-09-2008, 04:22 PM
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Originally Posted by BeachinXJ
Whats the temp rating on that plastic tubing? If its the tubing im thinking of that you got at Home Depot, you should have holes in it shortly from the exaust manifold heat.
it is the tubing you use for your washer / dryer that exits the hot water out.. so I guess it could hold up if not you can always wrap it with intake wrapping or header header ... its also a thicker more stronger plastic tube than those sell on Pepboys for universal intake systems,, its also as strong and thick as any other plastic tubing in the engine bay..

remember this is just a guide line for you to do yours if you wish to,, you can alter or change materials if you wish,,

Last edited by Belto; 03-09-2008 at 06:43 PM.
Old 03-09-2008, 05:56 PM
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nice work. i may have to re-do mine. i cut a bunch of holes in mine to improve air flow, but im always worried water will get into it.
Old 03-09-2008, 06:14 PM
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Originally Posted by ibjeepin98xj
nice work. i may have to re-do mine. i cut a bunch of holes in mine to improve air flow, but im always worried water will get into it.
well if you do this instead of 3 small tube with 1 bigger one,, you can pull it up and do a snorkel..without cutting a hole on your fender...

Last edited by Belto; 03-09-2008 at 06:30 PM.
Old 03-10-2008, 10:40 AM
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Originally Posted by Belto
well if you do this instead of 3 small tube with 1 bigger one,, you can pull it up and do a snorkel..without cutting a hole on your fender...
??? with out cutting a hole?
Old 03-10-2008, 11:44 AM
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Originally Posted by ibjeepin98xj
??? with out cutting a hole?
yes,, if you do what I did, but instead of 3 small tubes with 1 big 2.5" or 3" tube,, you can continue the tube line (up the grill between your hood and windshield) to your A pillar and its a home made snorkel

that way you dont do a traditional snorkel coming out of the side fender.
Old 03-10-2008, 09:56 PM
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no love for this?? strange I though more people will react to this mod.. I know its not a big mod,, but it is something new
Old 03-10-2008, 09:58 PM
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have you noticed any improvement because of the relocated intake?

-Kyle
Old 03-10-2008, 10:02 PM
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better throttle response,, im waiting on next week to estimate if any gains on MPG have been done,,
Old 03-11-2008, 05:08 AM
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I got a 2.8 carburated, so when it comes to this 4.0 stuff I'm lost.. But looks great.
Old 03-11-2008, 06:10 AM
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thanx for the suport jonb


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