K&N Air Filter 04 WR450
Posted April 22, 2004 - 12:44 PM
Posted April 22, 2004 - 01:32 PM
Posted April 22, 2004 - 01:46 PM
Posted April 23, 2004 - 07:54 AM
K&N claims to filter out smaller particles then foam filters. I wouldn't know for sure as I don't have one but my buddies all ride the dunes and swear that they are better at filtering then foam filters.
If they do, don't use it! Buy a foam filter - less crap allowed into your motor.
Yes K&N does make a filter for the WR but it's almost twice the price of the twin air.
Posted April 23, 2004 - 08:53 AM
Consider the following scenario: you with a K&N on your bike and your buddy with a foam filter on his bike, go out riding in a group. The ride is in dusty conditions, and on the average, both bikes are ridden in similar conditions - midpack, back of the pack, leading etc. At the end of the day your buddys bike runs like crap 'cause it's filter is clogged, but your bike still runs fine with the K&N even though it's dirty. Why's that? Both bikes were run in similar conditions. A similar amount of dirty air is presented to both filters, yet one clogs and the other still runs. I believe the foam filter stops the dirt right there and slowly clogs in the process, whereas the K&N, while still filtering dirt, allows a good amount of it thru to the engine.
That's my story and I'm sticking to it. I have the results of a test (long) that was conducted on different types of filters. Bottom line, the gauze/oil filters (K&N) are the worst performers with respect to small particle filteration. If you are interested, PM me and I'll email it to you (if I can find it).
Posted April 23, 2004 - 12:52 PM
Posted April 23, 2004 - 03:47 PM
Posted April 23, 2004 - 04:36 PM
Curious what your take on the clogging issue is? Why don't K&N's clog as fast as foam? I ran a K&N on my KLX650 for a while and noticed I could go a whole lot longer between cleaning as compared to a foam filter. That started bothering me and got me thinking. Then I read the results of an air filter test putting the oiled cotton gauze filters (K&N) dead last in small particle filteration and that was the clincher for me.
Posted April 23, 2004 - 05:02 PM
Posted April 23, 2004 - 06:03 PM
Posted April 24, 2004 - 02:08 AM
2. K & N filter is a "folded & pleated" filter element that fits within the same air box area. That said, now unfold the filter and lay it out next to your foam filter and calculate the "square area" difference, considerable isn't it? (maybe the reason foam clogges first? )
3. Air filters like oil filters : tests and advertisements "educating" us on how many more microns or particulates that one brand over another filters or let through are just decision makers for the rest of us. Bottom line, any of the filters available will do a fine job, if however you elect not to service/clean them, they will all let you down eventually.
BTY: I'm not partial to either style, the choice is yours.
Posted April 24, 2004 - 02:55 AM
I would never use one a dirt bike though. They do let dirt in.
Posted April 24, 2004 - 04:37 AM
Posted April 24, 2004 - 10:14 AM