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air filters
Posted: Fri Sep 22, 2000 7:34 pm
by Dennis Angus
I noticed a thread starting about air filters. After reading about the K+N
filters some time ago, I bought one and installed it. This year I changed
the carb to a Mikuni. When I pulled the carb, I also removed the rubber boot
from the air box and found a very fine coating of dust inside. I can't be
sure if the dust got by the original filter or the K+N. I decided to try a
different filtration method so I cut out the raised section of the filter
door, placed a fine screen in the cut out and attached a piece of after
market filter material. I also placed a piece of screen in the original air
inlet with the filter material attached. I oil the filter material the same
way as the original. Now I can see the condition of the filters and clean
them when needed and I doubt the K+N will ever need to be cleaned again.
This modification has made a very effective pre-filter and it hasn't
restricted the airflow.
DAngus
A-11
air filters
Posted: Wed Dec 13, 2000 12:24 am
by Craig Loseke
I have been flipping through my Dennis Kirk's dirt bike
catalog and drooling over all color pictures of all the
cool accessories. One of the first thing I would like to
get is an beter air filter. What are the pros and cons
of K&N vs Unifilter? What about using those filterskins
over the filter?
Craig
A15 P.R.U.A.V.
air filters
Posted: Thu Feb 05, 2004 1:59 pm
by Chris Krok
> From: Jeff Saline
> Subject: Was EMGO Oil Filters ** Now: Air Filters
>
> Now I'm looking to your wisdom on air filters. I'd like to have a
> replacement to drag along on more than day rides. I don't want a K&N
> filter so please don't recommend them to me. But I'm open to hearing
> about whatever you find works.
>
> What's your experience with air filters? I'd sure like a inexpensive
> source for them.
Don't know about inexpensive, but I've been running Moose foam filters
for a couple of years, and they've done great. Incidentally, if you
don't want to squish your spare foam filter when you pack (although
that's one of the advantages of foam), one of the Glad "disposable
tupperware" sizes is a perfect fit for a KLR filter.
A friend of mine loaned me a Twin Air filter for a flow test, and that
one was too small to properly fit the basket. Don't know if that was
actually a mis-labeled filter, or a one-time problem, but I couldn't get
the base to seal up very well.
Krokko
--
Dr. J. Christopher Krok
John Lucas Adaptive Wind Tunnel
Caltech MS 205-45, Pasadena, CA 91125
air filters
Posted: Thu Feb 05, 2004 8:47 pm
by Jeff Saline
Fred,
Thanks for your comments on both oil and air filters. I took a hard look
at the stainless oil filter. One of the local guys bought one and really
likes it. It sounds like it could be the way to go for lots of riding
and not having to do more than change the oil and remember it has a
filter.
I keep hearing of folks who like the K&N filter. Maybe I'll change my
mind about them after hearing enough good posts about their performance.
Thanks again,
Jeff
air filters
Posted: Thu Feb 05, 2004 8:47 pm
by Jeff Saline
Chris Krok wrote:
Don't know about inexpensive, but I've been running Moose foam filters
for a couple of years, and they've done great. Incidentally, if you
don't want to squish your spare foam filter when you pack (although
that's one of the advantages of foam), one of the Glad "disposable
tupperware" sizes is a perfect fit for a KLR filter.
A friend of mine loaned me a Twin Air filter for a flow test, and that
one was too small to properly fit the basket. Don't know if that was
actually a mis-labeled filter, or a one-time problem, but I couldn't get
the base to seal up very well.
Krokko
>>>>>>>>
Krokko,
Thanks for your comments. So far it looks like the Moose is in the
running for cost and performance. Here's what I got with one phone call
to a dealer.
Twin $25.95
Stock $23.99
Moose $21.95
Uni $20.95
I'll keep the disposable tupperware container idea in mind.
Best,
Jeff Saline
ABC # 4412 South Dakota Airmarshal
Airheads Beemer Club
www.airheads.org
The Beautiful Black Hills of South Dakota
75 R90/6, 03 KLR650, 79 R100RT
air filters
Posted: Thu Feb 05, 2004 10:45 pm
by Mike Torst
> -----Original Message-----
> From: Jeff Saline [mailto:salinej1@...]
> Sent: Thursday, February 05, 2004 6:36 PM
> To: moabmc@...;
DSN_klr650@yahoogroups.com
> Subject: [DSN_klr650] Air Filters
>
> Fred,
>
> Thanks for your comments on both oil and air filters. I took a hard look
> at the stainless oil filter. One of the local guys bought one and really
> likes it. It sounds like it could be the way to go for lots of riding
> and not having to do more than change the oil and remember it has a
> filter.
>
> I keep hearing of folks who like the K&N filter. Maybe I'll change my
> mind about them after hearing enough good posts about their performance.
>
> Thanks again,
>
> Jeff
>
---------------
I use a K&N air filter w/ a custom foam filtering modification on the once
solid retainer plate. The ultra-fine dust present in my air-box after my
weekend in Death Valley did not pass into the carb, let alone the area
between the filter chamber and the post-filtered area at the front of the
air-box that is drawn upon by the carb.
Excellent performing filtration package, w/ higher than stock K&N airflow
capabilities.
Mike Torst
Las Vegas
air filters
Posted: Thu Feb 05, 2004 11:16 pm
by Jeff Saline
Mike Torst writes:
> I use a K&N air filter w/ a custom foam filtering modification on
> the once
> solid retainer plate. The ultra-fine dust present in my air-box
> after my
> weekend in Death Valley did not pass into the carb, let alone the
> area
> between the filter chamber and the post-filtered area at the front
> of the
> air-box that is drawn upon by the carb.
>
> Excellent performing filtration package, w/ higher than stock K&N
> airflow
> capabilities.
>
> Mike Torst
> Las Vegas
>>>>>>>>
Mike,
Thanks for sharing your experience. I'm glad the K&N is working well for
you. I usually wipe the inside of an air cleaner with an oily rag so I
can tell if dust is getting by the filter and to help catch some of the
dust before it gets to the filter. So far the stock filter is working
well for me but I haven't been in the dusty conditions like you've been
riding in.
Best,
Jeff Saline
ABC # 4412 South Dakota Airmarshal
Airheads Beemer Club
www.airheads.org
The Beautiful Black Hills of South Dakota
75 R90/6, 03 KLR650, 79 R100RT
air filters
Posted: Fri Feb 06, 2004 12:29 am
by Mike Torst
The forward air-box chamber gets misted by crankcase vapors as well.
Mike Torst
Las Vegas
> -----Original Message-----
> From: Jeff Saline [mailto:salinej1@...]
> Sent: Thursday, February 05, 2004 9:11 PM
> To: vegasklr@...;
DSN_klr650@yahoogroups.com
> Subject: [DSN_klr650] Re: Air Filters
>
> Mike Torst writes:
> > I use a K&N air filter w/ a custom foam filtering modification on
> > the once
> > solid retainer plate. The ultra-fine dust present in my air-box
> > after my
> > weekend in Death Valley did not pass into the carb, let alone the
> > area
> > between the filter chamber and the post-filtered area at the front
> > of the
> > air-box that is drawn upon by the carb.
> >
> > Excellent performing filtration package, w/ higher than stock K&N
> > airflow
> > capabilities.
> >
> > Mike Torst
> > Las Vegas
> >>>>>>>>
> Mike,
>
> Thanks for sharing your experience. I'm glad the K&N is working well for
> you. I usually wipe the inside of an air cleaner with an oily rag so I
> can tell if dust is getting by the filter and to help catch some of the
> dust before it gets to the filter. So far the stock filter is working
> well for me but I haven't been in the dusty conditions like you've been
> riding in.
>
> Best,
>
> Jeff Saline
> ABC # 4412 South Dakota Airmarshal
> Airheads Beemer Club
www.airheads.org
> The Beautiful Black Hills of South Dakota
> 75 R90/6, 03 KLR650, 79 R100RT
>
>
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>
air filters
Posted: Fri Feb 06, 2004 8:18 am
by Tengai Mark Van Horn
At 8:45 PM -0800 2/5/04, Mike Torst wrote:
>I use a K&N air filter w/ a custom foam filtering modification on the once
>solid retainer plate.
This is a good idea, because in my experience, I found that the
unmodified, properly-oiled K&N actually flows LESS air than the stock
filter.
My '89 would run lean with the stock filter and was harder to start
cold than with the K&N.
I do like the durable construction of the K&N and that's my main
reason for keeping it.
Mark
http://www.reelrider.com
air filters
Posted: Fri Feb 06, 2004 10:39 am
by Mike Torst
> -----Original Message-----
> From: Tengai Mark Van Horn [mailto:Tengai650@...]
> Sent: Friday, February 06, 2004 6:19 AM
> To: Mike Torst
> Cc: 'Jeff Saline';
DSN_klr650@yahoogroups.com
> Subject: RE: [DSN_klr650] Air Filters
>
> At 8:45 PM -0800 2/5/04, Mike Torst wrote:
> >I use a K&N air filter w/ a custom foam filtering modification on the
> once
> >solid retainer plate.
>
> This is a good idea, because in my experience, I found that the
> unmodified, properly-oiled K&N actually flows LESS air than the stock
> filter.
> My '89 would run lean with the stock filter and was harder to start
> cold than with the K&N.
> I do like the durable construction of the K&N and that's my main
> reason for keeping it.
>
> Mark
>
http://www.reelrider.com
--------------------
My feeling exactly - not enough surface area. I basically 'Swiss-cheesed"
the retention plate w/ a few 1" I.D. and several .25" holes and used a 3/8"
spacing grommet (so the foam would not be crushed when mounted snuggly), a
5/8" thick filtering foam (oiled), a HD mess retainer roughly a bit bigger
than the in height and width than the K & N filter retainer, safety wire on
the winged screw, and retain the far end of the wire w/ the air-box door
screw.
I noticed by dust patterns on the foam that air was being drawn though the
filter media in addition to the surface of the K & N. All in all, it worked
flawlessly in talcum powder dustings - the air-box was a silt fest, but
nothing got past it into the forward air-box chamber.
Mike Torst
Las Vegas