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General Auto Tech / Re: K&N
« Last post by earlbrown on January 18 2019, 11:08:08 PM »
Interesting side note on that same technology.... .


  On house air filters we've all noticed you can get a 3 pack of those cheap green ones that get NASTY NASTY with dust over times  (dead skin and live mites :) ), and then there's the expensive 1 packs of the 3M high filtration pleated blah blah blahs.....

It's pretty common knowlege that the 3Ms are pretty restrictive and the pores are so small they tend to cause a pressure restriction and cause the HVAC system to work harder, cost more to run, and don't work as good.

Just for kicks years ago I changed my cheap filter and just happened to have some Yamaha Air Filter Oil in my living room, so I did what any one would do.   I sprayed oiled a happy face on my filter.


Time goes by, I pop open the grate, and the verdict is in!

I now keep a can of filter oil along side the filters. :)

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General Auto Tech / Re: K&N
« Last post by earlbrown on January 18 2019, 08:00:43 PM »
I'll just leave this here:https://nicoclub.com/archives/kn-vs-oem-filter.html
https://nicoclub.com/archives/kn-vs-oem-filter.html

The mentioned a... “myth” that oiled media filters actually “work better” as they get dirtier.


I've never heard of that myth, ever. Has anyone else?


And I know a little bit about this. Back when I was a Yamaha service manager, all the ATV's used foam air filters.  From the factory (and out of the package as a replacement) the foam is dry.  I'd have to pour Yamaha Air Filter Oil on them, saturate the foam, then squish out the excess.   (and that stuff is GOOOOOEY, AND STICKKKKKKKY as hell).

The science was that the foam has much larger passages than a paper filter so they won't clog as fast, The pores weren't for physically blocking airborne debris, it was just channels with a lot of lateral surface area covered in sticky.   They way the air could flow though large passages and the dirt would physically stick to the walls.     The trick is to clean and re-oil the filter before it gets fully coated.

So that 'myth' runs contrary to obvious observation.

The other benefit to an oiled filter in that environment was water intrusion. In that case the water is repelled by the oil and the foam isn't compromised by water like a paper filter would be.

That was K&N's original selling point AFAIK. They had reusable cotton gauze with large pores that you oiled.  So, according to them, you got very little pressure drop, why still being able to filter like a restrictive unit due to the oil.   (and they get to sell re-oil kits).
What I always found funny was they used to really harp on that 1,000,000 mile warranty, but if you read the fine print, they said to replace the filter after something like 5 cleanings due to the micro fine hairs on the gauze going away.   (Which makes sense due to a large loss of lateral surface area).

I always thought about trying to warranty my 14" unit (giggidy) saying it dind't make it to a million miles because I coudn't get 200,000 mile intervals before I had to clean it. :D
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General Auto Tech / Re: K&N
« Last post by earlbrown on January 18 2019, 07:44:43 PM »
Nothing to do with Buicks, but I found this filter comparison interesting as well.  More for us old school guys

https://www.motortrendondemand.com/detail/air-filter-horsepower-shootout/0_f6zyfspf/

Yep, good ole velocity stack for the win.


That's why I like the AEM filters over the K&N filters.  They have a radiused outlet where the K&N had a sharp outlet.   One has a small velocity stack for the MAF pipe, the other has an outlet that flows less than the actual outlet size.
On the upside, even with the K&N flowing like it's artifically smaller, odds are it doesn't hurt since most Buicks run a MAF that has a much smaller flow area than the MAF pipe.
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IHADAV8 Playground / Re: Happy Birthday, David!
« Last post by Pyro6 on January 18 2019, 07:25:25 PM »
Happy belated Birthday David, stay warm!
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IHADAV8 Playground / Re: new cars in stink bug quarantine
« Last post by stevemon on January 18 2019, 07:14:28 PM »
Proper reflection of new car prices IMO.
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General Auto Tech / Re: K&N
« Last post by Steve Wood on January 18 2019, 06:40:29 PM »
Nothing to do with Buicks, but I found this filter comparison interesting as well.  More for us old school guys

https://www.motortrendondemand.com/detail/air-filter-horsepower-shootout/0_f6zyfspf/
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IHADAV8 Playground / Re: Sometimes you want to feel important
« Last post by Forzfed on January 18 2019, 06:39:40 PM »
And it looks like he got dressed up for it!
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General Auto Tech / K&N
« Last post by daveismissing on January 18 2019, 02:57:32 PM »
I'll just leave this here:https://nicoclub.com/archives/kn-vs-oem-filter.html
https://nicoclub.com/archives/kn-vs-oem-filter.html
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IHADAV8 Playground / Re: Happy Birthday, David!
« Last post by Just a Six? on January 17 2019, 07:54:57 PM »
Thanks guys! I had a few days off & with this cold snap I spent a lot of time on Netflix & Amazon & checking in on the auction. I never saw the White LTD but it got a nice price. Cheers to another year! 
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