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Author Topic: kn air filter is it worth it.  (Read 2098 times)

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Offline cb650 bobber

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kn air filter is it worth it.
« on: July 24, 2008, 05:30:05 AM »
would you saying picking up a kn air filter is worth the power increase...will i need to rejet not talking about pods just a staight up k and n replacment filter. on a 1980 cb650. Will this lean it out further or richen it up a little.
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eldar

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Re: kn air filter is it worth it.
« Reply #1 on: July 24, 2008, 06:05:25 AM »
It in almost all cases will lean things out some. How much is hard to say, every bike seems different on that.
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Offline Gordon

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Re: kn air filter is it worth it.
« Reply #2 on: July 24, 2008, 06:28:07 AM »
You're not going to see a power increase.  The main benefit to a stock replacement K&N filter, or any other reusable filter is never having to buy another filter again.  Just clean, re-oil, and put it back in. 
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Offline medic09

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Re: kn air filter is it worth it.
« Reply #3 on: July 24, 2008, 06:30:17 AM »
I *think* in many (most?) cases it won't be different enough to warrant a carb adjustment.  Plug and play.  I like them for the reusability and one less thing to buy each oil change.  As they progressively clog, there would be a subtle change in performance, but not enough that I've ever done anything about it.  I have one on each of my running bikes.

OTOH, this thread might interest you on the TriumphRAT forums: http://www.triumphrat.net/sprint-forum/89273-k-and-n-filters-read-and-decide.html

Almost as good as an oil discussion.  Get out the beer and read.  ;)
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Offline Steve F

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Re: kn air filter is it worth it.
« Reply #4 on: July 24, 2008, 06:32:53 AM »
Quote from: Gordon on July 24, 2008, 06:28:07 AM
You're not going to see a power increase.  The main benefit to a stock replacement K&N filter, or any other reusable filter is never having to buy another filter again.  Just clean, re-oil, and put it back in. 
ditto
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Offline goon 1492

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Re: kn air filter is it worth it.
« Reply #5 on: July 24, 2008, 06:38:56 AM »
Boy 650 bobber you are just full of questions :P I use the K&n original filter shaped version on my 750 for 2 reasons, A: because of re-useability, and 2: because it looks cool with the bottom air box gone and a flat plate installed like a hot rod like below, just kidding I was missing the bottom of my air box, but compared to 140 bones for pods, the factory version K&N is just 40 bones.
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Offline cb650 bobber

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Re: kn air filter is it worth it.
« Reply #6 on: July 24, 2008, 06:51:32 AM »
i know lots of questions as I am prepping for this weekend when I plan to button up everything I wanted to do since I got it running 3 weeks ago and before it needs inspected again.
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Offline markjenn

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Re: kn air filter is it worth it.
« Reply #7 on: July 24, 2008, 10:54:27 AM »
Not a K&N fan - too much snake-oil marketing, and too little consideration of engine protection.  For a street bike, hard to beat pleated paper for engine protection.

- Mark
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eldar

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Re: kn air filter is it worth it.
« Reply #8 on: July 24, 2008, 01:51:38 PM »
Well the paper is best but if he planning on doing some engine work, then the paper gets too restrictive.
As for power increase, well, you might get an hp. I suppose if you have to rejet, then you might get a couple. On its own, you will not likely feel the difference.
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Offline CB500_k2

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Re: kn air filter is it worth it.
« Reply #9 on: July 24, 2008, 04:34:59 PM »
I created a K&N filter for my CB500 by burning out the paper from a stock filter and JB welding a section of K&N filter media from a Harley filter into the stock filter frame.  It has worked fine with no jet adjustment required.  Plug chops after high speed running look fine.  I did not detect more horses either.

Tom
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Offline ofreen

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Re: kn air filter is it worth it.
« Reply #10 on: July 24, 2008, 05:30:58 PM »
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Offline micol

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Re: kn air filter is it worth it.
« Reply #11 on: July 24, 2008, 07:38:45 PM »
I've run K&N filters on different bikes for years.  Never noticed any power increase, but like always having a clean filter.

micol
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eldar

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Re: kn air filter is it worth it.
« Reply #12 on: July 25, 2008, 06:14:46 AM »
This reminds me, I need a new filter. I got an emgo one last time and it has worked fine. Built well but is now 3 years old, I think 4 actually!. More age than miles but should still get the boot I suppose.
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