so you still think k&n filters well?.......... - Hot Rod Forum : Hotrodders Bulletin Board
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Old 01-19-2005, 06:30 PM
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so you still think k&n filters well?..........

http://www.bobistheoilguy.com/airfilter/airtest1.htm , at the bottom,read the rest of the 4 links

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Old 01-19-2005, 06:40 PM
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I have known for some time that K&N filters are not the "cat's meow" that everybody thinks they are. An oiled foam air filter element will perform much better than oiled gauze. The oiled foam elements have about three to five times the surface area to trap debris than the gauze has. I have been using Amsoil filters since I got the goods on K&N.

Vince
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Old 01-19-2005, 07:15 PM
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Must be why every dirt racer I know show's the K+N to cause eccessive top bore wear. Thing is though, The K+N won't start plugging up as fast and continue to filter some amount with a drop in pressure for a much longer time. Still better in the long run. See how fast a paper filter will last under extreme conditons.
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Old 01-20-2005, 03:10 PM
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I've read stuff like that too. It makes me wonder why so many use gauze filters. I'll be getting rid of my K&N filter and replacing it with a Amsoil oiled foam filter soon too.

You know what the difference is between 97% and 99% filtering efficiency (approx. the efficiency of K&N's vs. oiled foam filters)? Not 2%, but 200%!! That means the 97% filter lets 3 times more dirt into your engine than a filter that works with 99% efficiency. Think about it. Is 97% really good enough for your engine? Not for me, thank you...
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Old 01-20-2005, 08:32 PM
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They flow better than every other filter in the test.....not sure what your point is.

They also let more particulates by, but not as much as the next best amsoil which was the worst in filtering.

Chris
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Old 01-21-2005, 04:19 AM
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Oops! I should have read the link before spouting on about foam filters. At first I was skeptical reading the above link, but I think I'll go back to paper filters on my new motor after all, I want my filter to really filter. So there is no free lunch after all... i.e. high flow and high efficiency filtration

Oops! I should have read the link before spouting on about foam filters. At first I was skeptical reading the above link, but I think I'll go back to paper filters on my new motor after all, I want my filter to really filter. So there is no free lunch after all... i.e. high flow and high efficiency filtration
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Old 01-21-2005, 11:02 AM
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why not run dual paper filters,like i wrote in my previous post?
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Old 01-21-2005, 12:15 PM
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I dont get it? Paper filters are as good as anything else when there new. I stack two up (lot's of surface area!)and replace them regularly. Whether you like it or not cleaning a filter time after time degrades it's filtering efficency. Great flow, but you could slip a 2x4 through it after a while. Keep it simple and enjoy the ease of maintenence!
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