Why Not K&N? - Ford Powerstroke Diesel Forum
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  #1  
Old 02-08-2011, 04:20 PM
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Why Not K&N?

Why doesn't anyone use K&N ?
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Old 02-08-2011, 04:23 PM
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it dosn't filter well and allows dirt into the engine and "dusts" the turbo. shortening it life.
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Old 02-08-2011, 04:27 PM
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yep, engine/turbo dusting, poor filtration in dirty/dusty conditions
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Old 02-08-2011, 04:30 PM
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Really, I've ran them on my turbo charged street/race bike for years with no problems. It's a good rumor for the competition to spread though, is there any evidence or proof from testing?
Thanks,

Last edited by tricktom1; 02-10-2011 at 09:52 AM.
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Old 02-08-2011, 04:37 PM
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My boss had a k&n on his truck since new and I took the intake off with 70k miles on it and the compressor wheel in the turbo is trashed. I have a napa filter on my truck and mine looks fine with 263k miles. both trucks are 99 7.3L
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Old 02-09-2011, 04:16 AM
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I took my OEM filter off after 5000 miles and put a K&N on it. After 55000 miles I took the K&N filter out and it wasn't as dirty as the OEM after 5000 miles. I didn't change the climates I drove in so that tells me it wasn't catching any dirt. No more K&N for me!
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Old 02-09-2011, 09:09 AM
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Thanks for the replies
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Old 02-09-2011, 12:37 PM
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Quote:
Originally Posted by tricktom1 View Post
Really, I've ran them on my street/race bike for years with no problems. It's a good rumor for the competition to spread though, is there any evidence or proof from testing?
Thanks,
Tricktom1, I used to run them for years on my racebikes as well. (unitl I switched to BCM filters.) Anyways, based on some of the reading that I have done on the diesel sites, here is some additional detail. From what I gather, the K&N only has a couple of layers, or plys of the cotton gauze. The brands that everybody likes (S&B, AFE) have like 8 layers of the gauze. I can't verify any of this, it is just what I read in some of the other posts.

BTW, are you close to Dallas?
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Old 02-09-2011, 03:46 PM
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Thanks, South East of Houston
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Old 02-10-2011, 09:46 AM
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Motor cycles are not turbo diesels...all washable filters IMO shouldn't be used..
I'd either use a stock filter or a dry aftermarket one.
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