I've seen the ads saying that K&Ns flow twice as much air as a regular paper
filter. Unless they filter twice as well, doesn't that mean that you would
also be getting twice as much dirt??
----- Original Message -----
From: "Chris Robertson" <ckrobertson@hotmail.com>
To: <svgkm@halley.ca.essd.northgrum.com>
Cc: <ronday@home.com>; <Fred_Katz@ci.sf.ca.us>;
<datsun-roadsters@autox.team.net>
Sent: July 10, 2001 9:29 PM
Subject: Re: Carb stack socks
> Yep, I remember that post. It wasn't a study, but a story. It had no
real
> data and no analysis. In addition, the way it was written was obviously
> biased against K&N for whatever reason.
>
> Anyway, the modern K&N fiters use oiled cotton, not foam. They seem to be
> widely accepted. Other than that one story, I've never heard of any
> evidence against using them.
>
> Chris
>
>
> >From: Gary McCormick <svgkm@halley.ca.essd.northgrum.com>
> >To: Chris Robertson <ckrobertson@hotmail.com>
> >CC: ronday@home.com, Fred_Katz@ci.sf.ca.us,
datsun-roadsters@autox.team.net
> >Subject: Re: Carb stack socks
> >Date: Tue, 10 Jul 2001 12:50:21 -0700
> >
> >I used to use them, too on racing motorcycle engines that were torn down
> >and rebuilt
> >frequently, but for long-term use they have been shown to pass an
> >unacceptable amount of
> >the finer, engine-grinding size of crud that a racing engine can tolerate
> >for its short
> >span between rebuilds but a street engine is best off without.
> >
> >This issue has come up on the list a number of times in the last few
years,
> >and I remember
> >one list member citing a study that was conducted by a company he had
> >worked for on their
> >fleet of trucks. Oil analysis showed that the oiled foam filters passed
an
> >unacceptable
> >amount of particulate matter and they went back to conventional filters.
> >
> >gary
> >
> >Chris Robertson wrote:
> >
> > > What do you mean well known? K&N's are the choice of many racers as
> >well as
> > > turbo/supercharger manufacturers. What is the reasoning, or evidence?
> > > Would really like to know as I use them!
> > >
> > > Thanks,
> > > Chris
> > >
> > > >K&Ns are well-known to pass as much crud as air... better to have a
> >nice
> > > >airbox around
> > > >both carb mouths with room for the stacks and a good, high-quality
> >filter
> > > >around the whole
> > > >deal.
> > > >
> > > >Gary McCormick
> > > _________________________________________________________________
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> >
>
> _________________________________________________________________
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