k and n

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kab

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Jan 14, 2006
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Minnesota
I would like to know if k and n are any good. I have heard that they don't filter very well. When they are dirty they filter better then when they are clean.
 
quote:

I would like to know if k and n are any good.

A short answer: no, they're not.

If you want to learn why go here and type "K&N any good" in the search word window.
Hope it helps.
 
They are fine filters. The individual that does a great deal of used oil analysis for members of this board uses them on his vehicles.
 
I think the K&N oil soaked filters are crap. I bought 1 for my 98 Ford CV and had to cut the side rubber down to make it fit and it was messy. Plus, after about 5k miles, I had to remove the MAF (mass airflow sensor)and oily crap of it with electronics spray cleaner. It caused the CV to ran like crap.

I like those air filters made by Amsoil, they work just fine for my vehicles.
 
I had a K&N on my 5.0 Mustang and never had any problems with my MAF, but then I didnt go crazy spraying the filter with oil.
smile.gif


I now just use the basic Fram & Purolator (non AirHog or PureOne) air filters for all my cars.

I bought a $9 Fram air filter for my mom's 01'Honda the other day and it was VERY well made, unlike Fram oil filters.
rolleyes.gif
I compaired the used OEM Honda filter and the Fram and the only diffence was Fram had more pleats. The construction was identical.
 
I've used them for several years on several different vehicles with no problems. I only started doing UOA's a couple years ago but have never had any abnormally high readings from the filters on either Jeep that I had them on.
 
There is nothing wrong with K&N filters.

Vad doesn't speak for the population when he says most people don't like K&N filters.

He does this in every K&N thread.
 
I have to admit that I am a hard headed SOB,, but when presented with SAE standard test data it amazes me that people still want to make a argument based on "personal opinion". They'll argue all day long about the filter efficiency printed on the box of their Wal-Mart oil filter but when someone goes out of their way to try to offer specific information it suddenly becomes liberal spin meant to sway the masses.

I've rebuilt more than my fair share of engines over the course of my short life and bore concentricity deviation and the ledge left on the upper cylinder bore is all evidence that the dirt particles that pass through the air filter are not simply burned and ejected out of the exhaust. This stuff becomes micro sand paper and when mixed with combustion by-products it does wear away at the cylinder liners over time.

Personally I feel that the air filter is every bit as important, if not more important, than the oil filter in helping a engine last many years.

This being said, I prefer to stick with OEM paper for automotive use. If I had a vehicle that performed its duties in a muddy and wet environment (dirt bike or swamp buggy) I'd likely use a oiled foam.
 
Stick with paper. I've used them and saw noting but higher si #'s and fouled maf sensors. Once I tossed the K&N's the si #'s plummeted in both of my vehicles. I don't understand how this debate has gone on so long. I can generally pick out when a K&N is being used when seeing a UOA. Unless I was operating my vehicle in a dustless biosphere, I wouldn't touch one with a 10 foot pole.
 
"k&n not filtering well is all talk they are an excellent filter!!!"


SAE filter test = all talk? I don't think so. From what I can gather the opposite is true.

-T
 
quote:

anyone know of a pro race team that uses them??
nascar, ama, anyone???

Anyone know of any of the above that are expecting 150k plus out of those types of engines?

I have used K&N filters for years... until I compared them with paper in UOA's. That put a stop to them real quick. I found that if I used an oversized paper cone filter I could have my cake and eat it too! Thats performance and superior filtration.

I still use one in my 68 firebird as I needed a thin filter to fit under my stock hood. But thats a perfect Sunday driven car.

-Rob
 
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