K&N filter
Seasoned Member
Joined: Aug 2008
Posts: 400
Likes: 1
From: Minnesota
Year: 1999
Model: Cherokee
Engine: 4.0L
Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
K&N flows better thus more HP but it filters less dust so you get dirt in your engine wearing it out sooner.
CF Veteran
Joined: Apr 2008
Posts: 2,237
Likes: 3
From: Northern Illinois
Year: 90
Model: Cherokee
Engine: 4.0
The K&N uses an oil-soaked cotton gauze material for filtering. It does flow VERY well, but at a price. The gauze has a comparatively large micron size of particle that will get through it. And once you factor in the cleaning and oiling materials they are not cost effective.
Ok I posted on this once before but bottom line K&N filters breath so well for one reason they allow more air/particles through. You sacrifice filtration to get that added breathability..Also the concept of K&N filters what brought about by the racing world where engine longevity is irrelevant.. Those who run K&N's and do any offroading take the breather off then remove that throttle body and take a look at the dust and dirt that's in your intake manifold..Engines need 3 things.. Air, Fuel Spark...not dirt..Cotton gauze can not and will not filter dirt properly..For those who feel they must run the K&N's do youself a favor when you go offroad get some panty hose and wrap that filter before heading offroad or get a spare paper filter and swap em when you go offroad your engine will love you for that..
The larger size of particle that will get through the K&N filters can do damage to your engine. In deep mud we have seen grains of sand pass right through K&N filters.
Renix Super Guru
Joined: Mar 2008
Posts: 24,653
Likes: 19
From: In yourz postez fissin jurr spelinzs
Year: 1990XJ/1989MJ
Model: Comanche
Engine: 4.0L Renix
Phil if you still have questions we will try to answer them but we have pretty much explained the whole concept.
Thread Starter
CF Veteran
Joined: Jul 2008
Posts: 1,371
Likes: 2
From: Bonney Lake, WA
well i am not planning on driving through mud that could potentially hydrolock my engine so i dont think i need a snorkel. I just want something that is better than a paper filter without spending a fortune on it.
Senior Member
Joined: Jul 2008
Posts: 709
Likes: 0
From: West Virginia
Year: 98
Model: Cherokee
Engine: 4.0L
k&n filter will make noticeable hp gains case in point wife had pt criuser installed k&n drop in filter didn't tell her few days later she asked why her car seemed to have more accleration. Off road in dusty\muddy conditions might not be a good idea though.
CF Veteran
Joined: Oct 2007
Posts: 3,883
Likes: 6
From: W-PA
Year: 2001
Model: Cherokee
Engine: 4.0
I wish i kept those pictures. I had before and after pictures of my k&n cone filter. Before installation, intake tube was clean as a whistle. After 4 trail rides in the summer (little dusty and dry), the intake had a fine layer of dust. I tossed that S.O.B in the trash and went back to the stock paper filter. No more dust. I then built a snorkel (this was with my TJ)
K&N + Car =
K&N + Off Road Jeep =
(this was with my TJ)K&N + Car =
K&N + Off Road Jeep =
Seasoned Member
Joined: Aug 2008
Posts: 400
Likes: 1
From: Minnesota
Year: 1999
Model: Cherokee
Engine: 4.0L
CF Veteran
Joined: Apr 2008
Posts: 2,237
Likes: 3
From: Northern Illinois
Year: 90
Model: Cherokee
Engine: 4.0
The dry element hi-flow filters are the ones that you want to use. Stay away from the oil-soaked gauze filters.
AEM, AFE and Amsoil all make dry-element filters. AEM did not make a drop-in one for the XJ.
Thread
Thread Starter
Forum
Replies
Last Post
Blue94xj
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
21
Oct 27, 2024 12:13 PM
Blackxj51
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
17
Nov 26, 2015 12:04 AM
91cherokeeSC
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
41
Oct 29, 2015 01:49 PM
Bearstream
Stock Grand Cherokee Tech. All ZJ/WJ/WK Non-modified/stock questions go here!
2
Sep 28, 2015 10:53 AM
jeepnewbie44312
Stock XJ Cherokee Tech. All XJ Non-modified/stock questions go here
24
Sep 28, 2015 06:04 AM
Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)