Open AC filter; any concerns??
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Intermediate
Joined: Feb 2009
Posts: 44
Likes: 0
From: Santa Maria, CA
Open AC filter; any concerns??
Does anybody running an open AC filter hear the carb sucking in air? I got rid of the hypercharger that was on the bike when I bought it and adapted a car AC filter. It's a 3-ply cotton filter (not as good as a 4-ply K&N filter, but much cheaper). I think its pretty cool look, but now I hear my carb sucking wind so to speak. I've done some research & it appears the extra CFM (525) doesn't matter as the engine will only suck in so much & the Mikuni will only allow about 250 CFM. Long story short- is there anything I should be concerned with by doing this?
Elite HDF Member
Joined: Aug 2008
Posts: 4,133
Likes: 125
From: Japan
I basically do like "J" above and carry around a regular air cleaner cover (smooth-round with B&S logo, I bought used) for when I get caught in the rain. Exposed elements can let water into your intake manifold - that's a bad thing.
Seasoned HDF Member
Joined: Mar 2009
Posts: 24,712
Likes: 9,219
From: Snow Hill, NC
I had the same concern and ask the same question...no big issues came back from anybody...so now i am looking for a innovative cover ...
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Outstanding HDF Member
Joined: May 2008
Posts: 2,160
Likes: 3
From: Houston, Texas
I personaly like the big intake sound!
if your concerned about the rain.... here are some guys that might have something for you.
http://www.outerwearsracing.com/index.asp
if your concerned about the rain.... here are some guys that might have something for you.
http://www.outerwearsracing.com/index.asp
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The k & n filter is well worth the extra money as it will last the life of the bike. The cotton filters have been know to break up and get sucked into the engine. Just a thought for those who want to save money. The k & N is around $50 at autozone.
Tourer
Joined: Feb 2008
Posts: 448
Likes: 0
From: Illinois
I have been running an open K&N for three seasons no issues.
I have rode in rain several times.
I would just put my leg up on my linde bar to help shield the filter.
I have since removed the hwy bar so this years ride to OKC may be interesting.
I have rode in rain several times.
I would just put my leg up on my linde bar to help shield the filter.
I have since removed the hwy bar so this years ride to OKC may be interesting.