motorcycle filter debate response from k&n

[Jim Cunningham]

-----Original Message----- From: Blum, Richard [mailto:RichardB@...] Sent: Thursday, July 20, 2000 11:37 AM To: 'Jim Cunningham' Subject: RE: motorcycle filter debate Dear customer, Pin holes are normal. That is what makes a K&N filter. There are actually hundreds of microscopic fibers that cross these holes and when treated with oil, capture and hold the very fine particles. On the same hand, they allow the filter to flow more air than paper or foam. The filter is 4 ply cotton gauze (not one layer as the one guy says) unlike some competitors synthetic material filters. The synthetics do not have the very small fibers that natural cotton does. Our filters are tested by 2 outside, independent laboratories. They have been proven to stop at least 97% of particles on a SAE fine dust test. This test uses mostly particles in the 0 - 5 micron range but goes up to 20 microns. For comparison, a paper filter stops 98% on the same test and the OEM minimum standard is 95%. Foam is generally the worst media with a typical efficiency rating of 75%. To get higher ratings, the foam must be more dense and therefore way more restrictive. We got started over 30 years ago making filters for motorcycles and off road racers. The filters did so well that these guys wanted them for their cars and trucks. We started making filters for these applications and here we are today. If they did not work, we would not still be here and growing every year. We now make filters for Chrysler/Mopar, Ford Motorsports, Edelbrock, Rotax Engines, and Harley Davidson. We come as original equipment on the 2000 Ford Mustang Cobra-R. We even made the filters used in the Apache helicopters used in Desert Storm and the US Marine Corps new Osprey tilt-rotor aircraft. If they work in these conditions they will work for you. Thanks for asking, Rick

> ---------- > From: Jim Cunningham[SMTP:JimC@...] > Sent: Thursday, July 20, 2000 9:12 AM > To: 'tech@...' > Cc: DSN_klr650 (E-mail) > Subject: motorcycle filter debate > > there is currently a debate taking place on a email user group for a > particular popular on/off road motorcycle (KAW KLR650) that concerns K&N > air > filters. I have copied some of the postings below; would be most > interested > in K&Ns response to some of these. > > It might have been me. Hold it up to the light. You can see > pinholes of light thru a K&N when clean - it's only one layer, with > thousands of direct paths thru. It makes perfect sense to me that it > would filter better after a light coat of dust covered all the > pinholes. > > For that reason I have never trusted K&Ns, (except for a noticeable > power boost!). Lots of folks are running them even though!! > > > If by "clean" you mean not oiled, then you are definitely going to see > light > >through the elements. the K&N MUST be oiled with the K&N lube before > use! > > > It was definitely oiled, but I guess maybe it could have been oiled > more? And these pinholes were just the ones visible at any one time. > Rotate a little and there's thousands more. Either way, it did not > give me a good feeling. I'd like to envision a more circuitous path > in hopes the particle will hit and stick (to oil). > > >

[Scherer, Michael]

Hey Adam if this works I want a cut. I was riding my KLR the other day and I found a bag of cash on the trail. Biker Mike Here goes the latest round. Here's what happened to me in the past month or so that has appeared on the list.