K&N 63 Series vs 77 Series - JeepForum.com
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Unread 08-20-2013, 01:46 AM   #1
Seagull96
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2010 KK Liberty 
 
Join Date: Feb 2012
Location: Binghamton, NY
Posts: 71
K&N 63 Series vs 77 Series

I was just looking around and pretty much every website advertises that the K&N 63 series will only fit up to 2009. Is there any reason why it wouldn't fit on a 2010+?

If I was getting a CAI I'd imagine I'd rather have the plastic option compared to a metal one that would soak up heat..

http://www.summitracing.com/parts/kn.../model/liberty

http://www.jegs.com/i/K%26N/599/77-1...FZKi4AodK0sAow

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Unread 08-28-2013, 04:33 PM   #2
jeepster1947
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2012 KK Liberty 
 
Join Date: Jan 2013
Location: Houston, TX
Posts: 37
Also watching for an answer, Seagull....but I have another related question : why would 15 states declare the 77 series not street legal??
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Unread 08-28-2013, 08:57 PM   #3
tjkj2002
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2002 KJ Liberty 
 
Join Date: Dec 2009
Location: Colorado
Posts: 8,119
Your stock airbox is a CAI,both of those you listed are not and will draw heated air from under the hood while the stock box draws cool air from the grill/hood area.


Also a good paper filter is much better then the K&N for a daily driver.If racing then yes you will benifit froma K&N but on a daily driver will only cause issues in 30-60k miles with all the extra dirt it's allowing into the engine.
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Unread 08-28-2013, 09:30 PM   #4
tommudd
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2004 KJ Liberty 
 
Join Date: Aug 2008
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Posts: 4,342
^^^^^^
what he said
save the money you'd waste on a K&N and get some real toys
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Unread 08-28-2013, 09:42 PM   #5
streetglideok
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2005 KJ Liberty 
 
Join Date: Jul 2011
Location: Colorado Springs, Colorado
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If you want the effect of allowing dirtier air into the engine, and make the 2hp increase you get, save the money and take out your air filter completely. Not a lot different despite what K&N claims, which is put out by marketing teams. Take a google at splitfire spark plugs and the legal ills they faced. Don't believe the hype.
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Unread 08-29-2013, 01:40 AM   #6
Drednot
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1991 YJ Wrangler 
 
Join Date: Aug 2005
Location: phoenix, az
Posts: 1,412
Absolutely as stated above. Oiled filters are a gimmick that allows a grimy build up inside the intake and on sensors. Take a good look at how the air flows through your factory air box and you will see its cold air intake.

What can help a bit, though, is to completely cover the air box and air tube with foil backed bubble wrap insulation to keep the intake temp as low as possible.
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