IT'S THE LAW!!!! FRIENDS DON'T LET FRIENDS USE K&N'S!!!

:rofl3::rofl3::rofl3:

I'd recommend doing a forum search on the subject.

Robin

 

I did a search for "K&N" and "K & N" and found zero results.

 

The search engine doesnt work good at all on the forum IMO.I'll tell you what you would find if you did.You will find allot of people say the K&N lets dust into the engine and now it smokes and has low compression.Then you will find a very small percentage of people say it works great if it cleaned every ride and is properly oiled.Filter have been a hot topic for the rzr since so many people have had dusting problems.If you use a airbox that uses a donaldson filter you wont have a problem and only need to change the filter once a year.UMP,UTV Inc.,Dragon Fire and some others make this type of airbox.

 

X2

 

K & N is 1970's technology.

 

I don't think the filter is the problem. The K&N and several others that have same design work well. The problem is the air box and the related connections that allows air to bypass the filter which gets into the intake and TB. IMHO.
Ken

 

I'm glad you added a poll.This should be interesting.

 

If you clean the K&N between rides and properly oil the filter you will not have an issue. If you neglect the filter and clean it once between several rides you'll have a problem.

 

Bullshit. :rofl3:

 

If you never left a paved road or drove in a dust storm you MIGHT get by with a K&N. I have been seeing dust in the intakes from K&N's for close to 25 years servicing ATV's. I refuse to clean them any more. Funny how some say to clean it with every ride but K&N says it works better when it get dirty. If it is not an OEM style paper pleated filter it does not go on any of my equipment.

 

So far look I am only one to vote yes on K&N. :ride:
milos

 

Look at your factory air box with the filter pulled out, notice where the inlet hole comes in to play. The dirty or clean air comes in and hits the filter right at where it is seated against the flange that goes out to the throttle body. Stupid design. The clean air and more importantly the dirty air and dirt\dust should have a chance at hitting the back end of the filter and running along the entire filter. But it doesn't as it is built it hits right at the front and will start clogging up right there and if the seal is loose at all, which they will on the factory boxes, you get dirt in your engine. So a Aftermarket Air Box is a necessity to correct what the air does as it goes in the Air Box. I know most of you probably know this, but the New Guys might not understand why the Better Built Air Box is needed. Take it as you may!

 

Has this design been modified or improved in the newer models?

 

Kenneth, I have to respectfully disagree with you based on my experience. I have used K&N products for many years in racing applications not involving really dusty conditions (Road Racing). The HP increase vs a conventional paper filter was enough to justify its use considering that frequent motor rebuilds were a part of our budget. When I used a properly oiled, outerwear covered K&N on the RZR I found fine dust in the TB AS WELL AS inside the boot fitting of the filter itself. The only way it would be present on the inside of the filter would be through the media. The intake boots were inspected/tightened before this filter was installed and they were not the failure point. I have had better luck in preventing this fine dust with the stock element in my experience. JMHO, YMMV

Posted in the spirit of friendly debate

Robin

PS...I will be going with a Donaldson type filter when I go TURBO...yipee

 

When ever I need more air flow through a filter media I increase its surface area I dont use a more free flowing (dirt included) filter, the reduced velocity at the filter media because of the increase in surface area also reduces the chances of the dirt being pulled through the filter media in the event of the filter being prematurely plugged (happens more often than not).

Filtering the air before it enters the air box greatly reduces the dirt loading on the main filter keeping it free flowing longer.
PilotOdyssey.com • View topic - Prefilter Mod By hoser.. RZR

Dont need to be considered a debate its just a sharing of ideas and experiences too often people take offense to such discussions and get stuck on one idea

 

I actually run a K&N as a prefilter. I have UMP air box and stuff gets by the K&N. Not a lot, but over time it would cause problems. I suspect that I'm send 99% of the air that comes into the airbox through the K&N. Everything else is blocked as best I can.

 

Following someone in the dust usually is when the engine start getting dusted.Thats what happen to mine.I checked the filter every ride and it was clean until I followed a buddy all day on a dusty trail.After that day the whole intake had dirt in it including the TB.

 

K&N is the biggest waste of money there is on a rzr. Bought one, installed it and the pre-filter following the directions exactly. One ride, not even one of the dustier ones we have been on, and fine dust in the intake. Wiped it all down, installed a factory filter and no more dust. If you want a K&N I'll gladly sell you the piece of junk sitting on the shelf in my garage. :rofl3:

 

I'll pay you 5 bux if you throw it away Kyle :rofl3:

 

deal! :rofl3:

 

Make sure you dispose of it properly. It should be destroyed lest it fall in the hands of the wrong person and it re-installed in a RZR. I, for one, would not want that on my conscience.:rofl3::rofl3::rofl3:

I know some have had great success with their K&N. My experience parallels Kyle's when used on my RZR.

I do use one as a prefilter to the engine/clutch intake plenum and it works well. I can live with any HP decrease that MAY be caused by the increase in airflow resistance.

Robin

 

Just got another Polaris 500 in last evening. Had a K&N on it. Yep, you guessed it, dirt in the intake! Asked the female owner if I had permission to throw it away, told her why and showed her. Its in the trash if anyone wants it for FREE!

 

No worries guys, I'll splash some gas on it first and burn it lol

 

I'm spending $1500+ to repair my RZR. Problem was "dirt ingestion" and not covered by warrenty. I was using the full K & N system..501 miles on RZR. I'm changing to a different air system.:rm_thumbdown:

 

I have 1600 miles on mine & have never any dirt get by or had to add any of my Non-Polaris branded motor oil between changes. Then again, I also inspect everything at the end of the day....filter included.

 

Its funny there are countless threads that go the same way every time.K&N has some loyal followers.

 

I agree, Steve!! I'm not a die hard-"wouldn't dream of using anything else-there's only one filter in the world" K&N guy......but it has done what I bought it for.....it filters air.

Now, if it filtered some of the posts & threads (and members) that have been banned in the last couple years for getting into arguments over equipment, etc. ......well, then I'd REALLY have something!!:rofl3:

 

I had K&N filter on some motorcycles I've had and never had problems but these rzr's seem to always have issues.The air boxes must have allot to do with it.

 

BINGO!!! That is why I installed a KMS Billet intake as soon as I could after purchasing my RZR.

 

everyone has their own opinion....use what you want. good bad or ugly its your choice

 

Again, Steve, I agree totally. If it will go past the factory paper element, then of course it will go by practically any filter you want to throw at it. Maybe I got a build after the crew just got a raise or something, but I didn't have the dirt issue with the factory filter either.

If dirt is getting by your factory filter, invest in a complete airbox assembly.

 

No filter is 100% even the indurstrial high dollar 12" thick HEPA air filters are 100% they are only 99.99% and thats when used with a 3" thick pre filter in front of them to remove the brunt of the dirt before it reaches the HEPA filters and when the velocity over the filers is verified and monitored.

Personally I like the old time oil bath air filters too bad they are not suitable for our use

 

My experience only relates to an 08 and an 09 RZR-S. To begin with the foam Polaris used surrounding the intake area between the seats is all open cell foam. Of course this lets air and dust pass through it. I chose to do a full bed heat shield coupled with a K&N prefilter between the seats using a UTV inc. grille, throwing away the Polaris foam and using closed cell foam. Nothing original here, just took what I thought was the best of all the info I could find here and elsewhere on the net and incorporated it into my setup.

http://www.rzrforums.net/projects-how/46960-grumpy-mod-cargo-bed-heat-shield.html

It is my personal belief that a lot of the issues with dust ingestion past the paper filters (no matter whose filter you use) is that people ignore the instructions that say do not attempt to clean the filter. They use compressed air to blow off the dirt which is a NO NO! The dust particles that were in the filter leave a hole in the paper element. Now with the particles blown out of the element it leaves a passage for smaller particles of dust to go past the filter element and enter your engine intake. Next is a top end rebuild. The only acceptable method of cleaning a paper filter element is to knock it lightly on a hard surface to get the heavy dust off and reinstall. Ask any farmer how he cleans the paper filter in his tractor during cultivating season. You'll get the same answer.
Da Blue Toad:redrzr:

 

I cleaned my kn AFTER EVERY RIDE... no bs! And it passed dirt. Even with a foam prefilter covering the kn (not oiled) still passed dirt (air filter on top of snorkel(air box delete)) with a kn pre screen.... Even lightly oiled the foam over it and still no good.


I now have a utv Inc Donaldson filter... Have not got to test it out yet but gots to be better than my pos kn!!!

Only my opinion and personal experience... Take it for what its worth...