filter
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woa
woa ... MrElussive
i have never heard that before about k&n's ... but it makes sense (cause it has more flow)...
however, the k&n site (and others) claim that paper stock filters are the ones that cant filter properly towards their 80-100% used point. in other words, after a paper filter nears the end of its life ... it cannot filter everything anymore ... look here:
from k&n site:
To meet minimum filtration standards, paper air filters must be thick and/or the fibers must be tightly compressed and dense. Therefore paper elements that provide adequate filtration are more restrictive to air flow by design. Additionally, as a paper filter becomes more and more clogged, the pressure inside the filter drops while the atmospheric air pressure (approximately 14.7 psia at sea level) outside the filter remains the same. It’s like using your lungs to draw the air out of a plastic milk bottle. When the pressure differential becomes too great, the bottle will collapse. The same thing could happen to your paper filter, although it is unlikely. But what will happen could be just as severe. An excessively high pressure differential created by a restricted filter can literally pull dirt particles through the paper medium. In other words, the performance of a paper filter, i.e. air flow through the filter and its ability to protect your engine, DECREASES near the end of its service interval.
Ref: http://knfilters.com/facts.htm#PAPER
Ben
woa ... MrElussive
i have never heard that before about k&n's ... but it makes sense (cause it has more flow)...
however, the k&n site (and others) claim that paper stock filters are the ones that cant filter properly towards their 80-100% used point. in other words, after a paper filter nears the end of its life ... it cannot filter everything anymore ... look here:
from k&n site:
To meet minimum filtration standards, paper air filters must be thick and/or the fibers must be tightly compressed and dense. Therefore paper elements that provide adequate filtration are more restrictive to air flow by design. Additionally, as a paper filter becomes more and more clogged, the pressure inside the filter drops while the atmospheric air pressure (approximately 14.7 psia at sea level) outside the filter remains the same. It’s like using your lungs to draw the air out of a plastic milk bottle. When the pressure differential becomes too great, the bottle will collapse. The same thing could happen to your paper filter, although it is unlikely. But what will happen could be just as severe. An excessively high pressure differential created by a restricted filter can literally pull dirt particles through the paper medium. In other words, the performance of a paper filter, i.e. air flow through the filter and its ability to protect your engine, DECREASES near the end of its service interval.
Ref: http://knfilters.com/facts.htm#PAPER
Ben
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