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Posted by: Rudedog
K& N "with" an outerwear works fine in the sand. As Reconranger noted, due to grains of sand being so much larger than dirt particles a
K & N filter will do the job for sand. Now if you were going off on a weekend dirt excursion, I'd bolt on a 2-stage foam filter.
Rude dog
Posted by: WyoDuner
Quote
Originally posted by: duneDS650
The outerwear is mandatory. It keeps most of the sand from sticking. Without it the gauze will pack up and sand will get in.
Foam filters pack up quickly with sand. You'll want an outerwear over a foam filter as well. Problem is, the oil on the foam gets on the outerwear and it plugs.
K&N with Outerwear.
I agree with you AGAIN.... Exactly why K&N is great for sand and foam is great for dirty and dusty conditions.
Posted by: havinnoj
always ran k&N's and they are easy to maintain
Posted by: RacinJason
Foam elements for maximum protection
Paper or gauze style(K&N) for best air flow
Posted by: RacinJason
Try this next time
I oil only the inner foam filter leaving the outer wrap dry as well as the outerwear...this deflects instead of attracting
Posted by: SANDMAN430
no problem with k@n here but for dusty sand areas the foam would be a better choice.
Posted by: RaptorRacer1
Foam filters like the Uni or Twin Air filter are MUCH better at filtering the very small particles like dust and silt. They are recommended for any riding where you may encounter much dust and/or fine dirt particles. An Outerwears will help keep them cleaner, reduce cleaning intervals, and keep sand and dirt particles from getting embedded into the foam.
K+N filters flow more air. If you are after MAX power, at the expense of some filtering capability, go with the K+N. They filter large particles fine, but finer dust can find its way through. Occasionally a paritcle of sand can also find its way through. Using an Outerwears will prevent the larger particles (sand, dirt) from making their way to the filter.
If you do all your riding in the sand you will be fine with a K+N coverd by an Outerwears.
RR1
Posted by: reconranger
Everybody always asks about sand. Sand grains are pretty large and easy to filter compared to that fine dust that is like talcum powder. In the stuff I ride, sand is the least of my worries. On the other hand, sand is very abrasive and would ruin an engine real fast.
Anyway, I have run K&N's w/ outerwears on everything for many years with no problems. I do change the filters very often though!!
Posted by: duneDS650
The outerwear is mandatory. It keeps most of the sand from sticking. Without it the gauze will pack up and sand will get in.
Foam filters pack up quickly with sand. You'll want an outerwear over a foam filter as well. Problem is, the oil on the foam gets on the outerwear and it plugs.
K&N with Outerwear.
Posted by: 250R4LIFE
I'm thinking about going with a K&N filter. I do all my riding in the sand. do you guys think it will be alright to run a K&N filter in the sand. Or Should I go with a foam filter instead. I prefer K&N filters but I'm also concerned about reliability. thanks for any responses.
Posted by: wildchild660R
Id go with the K&N. They put out more power and they are easier to clean and maintain(my personal opinion). Ive run a k&n since the day I got my rappy and never had any problems and I run only sand.
Posted by: dancingqueen
I dont know if there is a better of the two for sand, but I run only K&N in all my bikes and we run sand only. Havent had any problems.
Posted by: ryangibson
How much sand gets on a foam filter in a closed airbox? It's been a while since I've been to the dunes, and am considering forking over a couple hundred bucks for K&N's with outerwears for both my quads, but am wondering if it is really necessary.
Most of my riding is on silt, out in the desert, which it sounds like my stock foam filter is actually better at filtering. I'm planning on making two, week-long dune trips this summer though, and want to make sure I'm protected...
Since I have the lid on both airboxes, I can't see too much sand getting in there...dust flies around, so I can see it getting sucked in, but sand is heavy, and without a direct path from the tires to the filter, I can't imagine the filter getting too sandy...what do you guys think?
Posted by: ryangibson
Thanks for the info, but nobody has actually answered my questions:
1) How much sand is going to get into a closed air box?
2) Is it worth spending $180-$200 to get K&N's for both wheelers, just for going to the dunes, or should I just stick with my stock foam, since that is what I will use MOST of the time?
Also, how much more sand would get in my airbox if I take the lid off?
Has anyone had any problems with sand working it's way through the foam over time? Even after cleaning the filter, it seems like you couldn't get ALL the sand out...
Posted by: bigblock2stroke
You may be right, however, I work for Cummins and we have tested the K&N filter vs. the (OEM) paper filter and the paper filter did a much better job. So much so that you will void the warranty on your Cummins engine if you use the K&N. There are really no tricks to airflow, its like fuel economy vs power. You increase one and the other suffers. You increase air flow for more power and you will lose filtering capability.
Posted by: dredog
for sand you need to go witha k&n for sand and a foam filter for silty dust. the particles in sand are bigger and the k&n pics them up and stays clear for air but use an outerwear.
Posted by: AlphaRaptor660R
All my friends have run K&N filters in their banshees with no airbox at all for years and none of them have ever had any problems associated with it...I've run it for a little over a year now and all i ride is sand and have never had a problem either...
Posted by: Capewindy
My ride coughed and backfired when starting it warm at the dunes about a year ago, the foam filter caught FIRE.I switched to K&N they don't ignite as easy.Oddly enough it hasn't backfired while starting again.
Posted by: MTX
go with the ESR intake $65 +$10 outerware, and take off the airbox. The best airfilter
Posted by: Sin
K&N hands down. but you may need to rejet after installing a K&N. MASS air flow man.....
