Air filter picture/question - K-Bikes.com - Excellence in Motion
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post #1 of 21 (permalink) Old Nov 27th, 2007, 12:47 am Thread Starter
MIK
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Air filter picture/question

I replaced air filter at 24K miles and it looks like it has some oil on it, on the engine side (see the pic). Is that normal? I don't remember if the previous filter that I replaced at 12K miles had it, but I don't think so. Anyway, bike runs fine, but I am just curious what it is.
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post #2 of 21 (permalink) Old Nov 28th, 2007, 12:10 pm
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I have personally never seen an airfilter with oil on it. Are you changing your filter every 12K?
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post #3 of 21 (permalink) Old Nov 28th, 2007, 12:52 pm Thread Starter
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Quote:
Originally Posted by barnburner
I have personally never seen an airfilter with oil on it. Are you changing your filter every 12K?
Yes. This filter is 12K miles old.
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post #4 of 21 (permalink) Old Nov 29th, 2007, 3:16 pm
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You might expect some oil mist from the engine breather. Presumably you checked the inlet valve clearances at some time and they were ok.

I wouldn't worry unless you get a lot of oil. K&N filters are loaded with oil which gets everywhere. You could wipe round the airbox engine side and see if there's any build up on the next filter change.



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post #5 of 21 (permalink) Old Nov 29th, 2007, 3:37 pm Thread Starter
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post #6 of 21 (permalink) Old Nov 30th, 2007, 9:04 pm
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Unhappy

I have had a oil in the air-box probllem that was caused by too much oil in the crank-case.
OOps. I put too much oil in.

bazra
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post #7 of 21 (permalink) Old Apr 28th, 2008, 10:51 pm
 
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Thumbs up K&N Airbox filter

If you try it once, you will never put a paper filter in there. I'm very impressed with the performance change.
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post #8 of 21 (permalink) Old Apr 29th, 2008, 2:09 pm
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You won't be so impressed when you checkout the throttle bodies after 6-10K like I did and see all the sticky mess and gunge it puts over them and the butterflies, gunge that's got through the filter and stuck hard. Your throttle bodies are precision parts!

That's a lot worse than a bit of oil mist blowback from the engine.



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post #9 of 21 (permalink) Old Apr 29th, 2008, 3:46 pm
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If the proper amount of oil is used on the K&N, no problems. It needs very little because it spreads out. Most people are impatient and put way too much on them.

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post #10 of 21 (permalink) Old Apr 29th, 2008, 5:46 pm
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Quote:
Originally Posted by SammyGarcia
If you try it once, you will never put a paper filter in there. I'm very impressed with the performance change.
Can you put any numbers to the performance change after fitting a K&N?
Did you do before and after dyno runs?

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