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K&N Cold Air Intake System

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Old Jun 4, 2009 | 10:48 PM
  #1  
huntin rig's Avatar
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Year: 1990
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Engine: 4.0L V6
Question K&N Cold Air Intake System

k&n doesnt make one for my 1990 cherokee. is there a way i can make one myself.

im pretty positive it can be done
if someone has successfully done it it would be great if u could please help me


im only 14 but i will know wat ur tlking about.
im not a dee de dur when it comes to this.
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Old Jun 4, 2009 | 10:52 PM
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Tabatha Will's Avatar
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+1 I wanted one as well but they don't make one for my 1990 cherokee...
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Old Jun 4, 2009 | 10:59 PM
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i think i can but just buy one of those funnel shaped fitlers with some 4 or 5 inch housing and put hose clamps on both ends and maybe a bracket for extra support.
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Old Jun 4, 2009 | 11:07 PM
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Yeajust get a spectre cone perfomance filter and attach it right to your current intake. It cost like 20 bucks and it sounds and performs pretty closely to a full k&n system
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Old Jun 4, 2009 | 11:18 PM
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now im thinking it may not work because i just went out in the garage and saw the vacumm lines on it so idk now
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Old Jun 4, 2009 | 11:21 PM
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it will work you just have to do a little fabrication. do a search on here and you should find out everything you need to know
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Old Jun 4, 2009 | 11:28 PM
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so i could just drill holes into the intake and stick them in?
that might work


prolly not tho.


thanks for your help ill look around
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Old Jun 5, 2009 | 02:39 AM
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heres a link to a thread that was posted about making your own intakes and such

https://www.cherokeeforum.com/showth...ghlight=intake

Lots of pics and stuff to give you a good idea on what you may want to do!
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Old Jun 5, 2009 | 12:59 PM
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I just made mine, It's not hard and I didnt have to drill anyholes into the new intake tube. Pic.
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Old Jun 5, 2009 | 01:16 PM
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Originally Posted by Chucknormous
Yeajust get a spectre cone perfomance filter and attach it right to your current intake. It cost like 20 bucks and it sounds and performs pretty closely to a full k&n system
AEM is a a better filter. K&N is 95.5% efficient. AEM is 98.5% and requires no oil.

The key to getting cold air is to make a box for it out of anything that will isolate it from the rest of the engine compartment. One side to the hood can be open so you can service it. I used the strip between the hood and body off an 80s Chevy pickup for a seal.
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Old Jun 5, 2009 | 03:30 PM
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route the cone into your stock air box (keeping the top on and not cutting it up), and look at the opening of your air box, then directly in front of it at the firewall. Remove the black plastic cap and ream out the air box hole to match the one in the firewall. Fab up a piece to connect the two and Viloa! Cold air with the benefits of ram air.
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Old Jun 5, 2009 | 09:33 PM
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Engine: 4.0 liter RENIX I-6, DIY Cold Air Intake, 2.5 FM Exhaust, 3 Core Radiator
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Huntin rig, this is the cold air intake I made for my XJ

Last edited by BuckB91XJ; Jul 12, 2012 at 05:58 PM.
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Old Jun 8, 2009 | 10:49 AM
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Update, got the cold air around the intake.

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Old Jun 8, 2009 | 10:55 AM
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Originally Posted by PNWJeep
Update, got the cold air around the intake.

What is the cold air box made of??
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Old Jun 8, 2009 | 11:10 AM
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It's a K&N kit from a 94 grand cherokee. I pulled off from the JY for $10. A little cutting and I've got a shield...

If i didnt find the K&N from the GC, i would use sheet metal. Get a heavier gauge.

**MAKE A MOCK UP WITH CARDBOARD**
its alot easier to fold and refold, throw away and try again with free cardboard....

Goodluck. James
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