• Hi everyone,

    As you all know, Coffee (Dean) passed away a couple of years ago. I am Dean's ex-wife's husband and happen to have spent my career in tech. Over the years, I occasionally helped Dean with various tech issues.

    When he passed, I worked with his kids to gather the necessary credentials to keep this site running. Since then (and for however long they worked with Coffee), Woodschick and Dirtdame have been maintaining the site and covering the costs. Without their hard work and financial support, CafeHusky would have been lost.

    Over the past couple of weeks, I’ve been working to migrate the site to a free cloud compute instance so that Woodschick and Dirtdame no longer have to fund it. At the same time, I’ve updated the site to a current version of XenForo (the discussion software it runs on). The previous version was outdated and no longer supported.

    Unfortunately, the new software version doesn’t support importing the old site’s styles, so for now, you’ll see the XenForo default style. This may change over time.

    Coffee didn’t document the work he did on the site, so I’ve been digging through the old setup to understand how everything was running. There may still be things I’ve missed. One known issue is that email functionality is not yet working on the new site, but I hope to resolve this over time.

    Thanks for your patience and support!

Max hours between air filter cleaning

Dirtdame;100686 said:
I read that about K&N gauze filters, but I think those are too capable of passing dirt most of the time anyway.
The paper I'm referring to studied foam filters only. But you're right about the gauze K&N's... I've seen countless articles and engineering papers condemning oiled-gauze filters for use in anything except frequently re-built race engines. The particle passage data on K&N "filters" is sobering when compared to conventional filters.
 
krieg;100880 said:
The paper I'm referring to studied foam filters only. But you're right about the gauze K&N's... I've seen countless articles and engineering papers condemning oiled-gauze filters for use in anything except frequently re-built race engines. The particle passage data on K&N "filters" is sobering when compared to conventional filters.

In 1980, Kawasaki made a KDX 250 that came from the factory with a Don Vesco gas tank and a K&N filter. I thought that I was being careful when I washed the one in mine, and letting it dry all the way before applying the special K&N filter oil to every fold in it. But I soon found that a lot of fine dust was making it's way through. I held it up to the light and could see specks of daylight through it.:eek: That's when I bought a Uni for it.:doh:
 
I do the prefilter [skins] techniqe also only I use up all 3 prefilters, then my filter regular filter before washing. Which reminds me of a time when I bought a 86 KDX200 really cheap because the owner couldn't start or keep the bike running. I bought it thinking of a possible top end job but found the air filter oiled to the max! It couldn't breath! Purred like a kitten after that.
 
i clean my filter every ride maybe a bit over the top but its better than a topend re build i have 4 twin air filters and use them all when dirty clean them all togeather that way its not as mutch as a problem cleaning
 
I've seen people change thier air filter every ride, my theory is you have more of a chance to get crap in the motor during a change than with a slightly dirty filter. I dont think anything really gets through a dirty filter, it just starts to reduce air flow. I've gone maybe too long between cleanings but have never seen the inside dirty.
 
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