> To: John M. Saturday, January 21, 1995 5:14:10 PM >From: George Morrison > >John: If I wrote "subjective" I meant "objective".. I was >responsible for evaluating re-usable air filters >for a major construction/mining company that had >hundreds of vehicles ranging from large earthmovers >to pick-up trucks and salesmen's cars. This study >was embarked upon due to the fact that we were >spending upwards of $30,000 a MONTH on paper air >filters. Using them one time then throwing them >away.. I inititated the study in that I was convinced >that a K&N type filter or oiled foam would save us >many dollars per year in filter savings, man hour savings, >and of course engines as these would filter >dirt better than paper. (yes, I had read the K&N ads and was >a believer) > >Representative test units were chosen to give us a >broad spectrum from cars right through large front >end loaders. With each unit we had a long history >of oil analysis records so that changes would be >trackable. > >Unfortunately, for me, every single unit having >alternative re-usable air cleaners showed an immediate >large jump in silicon (dirt) levels with corresponding >major increases in wear metals. In one extreme >case, a unit with a primary and secondary air cleaner, >the secondary (small paper element) clogged >before even one day's test run could be completed. >This particular unit had a Cummins V-12 engine >that had paper/paper one one bank and K&N/paper on >the other bank; two completely independent >induction systems. The conditions were EXACTLY >duplicated for each bank yet the K&N allowed so >much dirt to pass through that the small filter became >clogged before lunch. The same outcome occured >with oiled foams on this unit. > >We discontinued the tests on the large pieces almost >immediately but continued with service trucks, >formen's vehicles, and my own company car. Analysis >results continued showing markedly increased >wear rates for all the vehicles, mine included. >Test concluded, switched back to paper/glass and all >vehicles showed reduction back to near original levels >of both wear metals and dirt. I continued with >the K&N on my company car out of stubborness and at >85,000 miles the Chevy 305 V-8 wheezed its >last breath. The top end was sanded badly; bottom >end was just fine. End of test. > >I must stress that EVERYONE involved in this test >was hoping that alternative filters would work as >everyone was sick about pulling out a perfectly good >$85 air cleaner and throwing 4 of them away >each week per machine... > >So, I strongly suggest that depending upon an >individual's long term plan for their vehicles they simply >run an oil analysis at least once to see that the >K&N or whatever alternative air filter is indeed working >IN THAT APPLICATION... It depends on a person's priorities. >If you want performance then indeed the K&N is the >way to go but at what cost??? > >And no, I do not work for a paper or glass air >filter manufacturing company nor do I have any affiliation >with anything directly or indirectly that could >benefit George Morrison as a result.. >
[dsn_klr650] tweety exhaust
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- Joined: Mon Jul 31, 2000 10:52 am
k & n air filters
The following post was on a Mercedes ML List I belong to. Thought it might
be of interest here also.
Subj: K & N filters
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k & n air filters
This message first appeard over 5 years ago on an
offroad Jeeping list I was on. It was being
circulated as gospel by some Amsoil guys who wanted to
sell their foam filters to us jeepers.
We forwarded it to K&N who debunked the whole thing.
Keep in mind K&N doesn't even make filters for the
industrial equipment this 'report' goes on about.
Also, if filtration were an issue they wouldn't be
standard equipment on some high end sports cars and
sold by some dealers as factory approved performance
parts (Mopar for example).
Gotta love the Internet.
Running K&N's in everything I own,
-Ken
Date: Fri, 11 Aug 2000 08:25:58 -0600
From: AFIEDLER@...
Subject: K & N Air Filters
The following post was on a Mercedes ML List I belong
to. Thought it
might
be of interest here also.
Subj: K & N filters
I was> To: John M. Saturday, January 21, 1995 5:14:10 PM >From: George Morrison > >John: If I wrote "subjective" I meant "objective"..
convinced>responsible for evaluating re-usable air filters >for a major construction/mining company that had >hundreds of vehicles ranging from large earthmovers >to pick-up trucks and salesmen's cars. This study >was embarked upon due to the fact that we were >spending upwards of $30,000 a MONTH on paper air >filters. Using them one time then throwing them >away.. I inititated the study in that I was
savings,>that a K&N type filter or oiled foam would save us >many dollars per year in filter savings, man hour
and was>and of course engines as these would filter >dirt better than paper. (yes, I had read the K&N ads
__________________________________________________ Do You Yahoo!? Kick off your party with Yahoo! Invites. http://invites.yahoo.com/>a believer)
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k & n air filters
Before anyone believes this, as with anything, you need to ask some basic
questions before taking it as gospel;
- why no email addy for the tester/original poster?
- why is the company with the fleet of vehicles not named?
- how was testing done to verify wear rates before, during and after testing
the K&N filters?
- how did the testing co-incide with the company's oil change schedule?
- after seeing the K&N's not perform well, why did he still use one in his
personal company truck?
- in that personal company truck, was a K&N filter used for the complete
85,000 miles since it was new from the dealership? Probably not, so how
long?
- do K&N make air filters for large commercial vehicles like front end
loaders and vehicles with cummins V-12 engines? I tried checking on their
webpage but it kept crashing my computer.
- were the K&N filters being oiled properly? What checks were put into
place to guarantee this?
I could go on but I think the point is made. I'm NOT a believer in K&N
filters and would not put one in any vehicle I care about, but I put zero
weight on those 'facts'.
Keeping my mind open...
Karl
________________________________________________________________________ Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com> >I must stress that EVERYONE involved in this test > >was hoping that alternative filters would work as > >everyone was sick about pulling out a perfectly good > >$85 air cleaner and throwing 4 of them away > >each week per machine...
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[dsn_klr650] tweety exhaust
On Fri, 11 Aug 2000 23:09:09 -0500, Chris Rivers wrote: I also wonder if it might be caused by people not cleaning out the spark trap as per the service manual. Any thoughts on this? Renn A15 I tried this to no avail. Nothing came out of the pipe and nothing changed. YMMV. dat brooklyn bum _______________________________________________________ Say Bye to Slow Internet! http://www.home.com/xinbox/signup.html
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