Author Topic: Air Box "area" question & Foam-type air filter  (Read 1136 times)

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chrisfranklin

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Air Box "area" question & Foam-type air filter
« on: August 18, 2006, 11:09:16 PM »
So, I bought an old YJ airbox and tube to install on my Jeep for emissions and maybe for around town too.  If it helps the low end torque and indirectly help the brake booster performance -- which it probably will --, then I'll probably keep it in there.  Love to do the Turbo City MAP Aduster matched to a cold air intake -- but, frankly would like to pass emissions without any "funny" business

In terms of what air filter I'd put in an air box, I've used paper and K&N panels  for the last 10 years in various vehicles including this Jeep.  I could deal with sticking with paper, but wanted something that flowed a little better, but didn't let the small particulates in  

Was looking at foam type filters.  These are still "oiled", but they apparently filter significantly better than cotton-gauze and oil filters do.
Saw this filter at the www.autoanything.com  site: http://www.autoanything.com/air-filters/60A1963A-1A3.aspx#customerReview.  

Problem is the foam/oil filter only fits on TJs Wranglers, '98 and up.  So, here's the big question:  Does the late 90s TJ airbox, 2.5 (pre 2.4)/4.0 have the same area dimension as the YJ airbox?

Also, any of you guys know of foam/oil filters that do fit YJ airbox or whether Foam is even worth the trouble  (Dang, forgot to search the forum before asking this (doh!).  Note: Most of the customer reviews suggest oil/foam is equivalent to K&N for "air flow" and vastly superior in filtration ability.

chrisfranklin

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Air Box "area" question & Foam-type air filter
« Reply #1 on: August 19, 2006, 07:02:43 PM »
Was looking around at foam air filters and you have True Flow and Amsoil.

Was reading about a Japanese comany called Apexi that makes a disposable dry cotton air filter.  Mostly these are for use on Sports compacts and motorcycles.  Its dry, so no oil, but is supposed to filter great and flow is top-of-the-line in tests.

Course, if you go cone-filter K&N,you can just pick up a foam "pre-filter" and your small particle filtration problems are likely solved.

What to do with this new frigging airbox?  May see if I can mount the airbox at the end of the aluminum 3 inch diameter tube that I use for the cone filter I have now.  Will have to use some kind of rubber tube coupler that can accomodate a 3" metal air tube and a 2.5" airbox outlet if I did that.  Might put the airbox about as far away from the engine as is possible, though.