K&N Air filter

gkarats · October 29th, 2013, 06:59 AM

hi guys/gals this has probably been covered more than once, but unfortuneately the search function is not working on my tablet.

I installed a k&n airfilter ka-2508. The cover did not sit flush with the airbox (until i bolted it tight), filter was sticking out just slightly? After i tightened the allen bolts it looks fine, just curious if this is normal or do i need more grease on the lip to slide it in further?

Cheers

DaBlue1 · October 29th, 2013, 07:47 AM

Improperly fitting filters have been reported more than a few times. Be careful not to over tighten the cover if the filter is not fitting properly. Bending or warping of the cover may occur. This may also cause some air to leak in too. A easy remedy is too shave a little rubber off on the ends of the filter to ensure a proper fit of the airbox cover.

gkarats · October 29th, 2013, 07:52 AM

Quote:

Originally Posted by DaBlue1

Improperly fitting filters have been reported more than a few times. Be careful not to over tighten the cover if the filter is not fitting properly. Bending or warping of the cover may occur. This may also cause some air to leak in too. A easy remedy is too shave a little rubber off on the ends of the filter to ensure a proper fit of the airbox cover.

Ok im going to pull it and try a little more grease to see if that makes a difference, were talking mm here. If that fails ill try shaving some rubber off as you suggested.

Cheers

ninja250r81 · October 30th, 2013, 12:04 AM

i had to shave some rubber off with a razor blade for mine to fit

gkarats · October 30th, 2013, 01:03 PM

Quote:

Originally Posted by ninja250r81

i had to shave some rubber off with a razor blade for mine to fit

Yeah I ended up doing the same - then got a good fit.

Klint · November 1st, 2013, 07:18 PM

you may want to shim your needle with 1 washer for better performance if you notice that your bike doesn't want to stay on with a cold startup or lags at lower rpms.

Installing the filter will make the bike run a bit leaner than it already is from the factory!

I just shimmed with two washers and i have a K&n filter and Yoshi exhaust... it feels like a new bike!

abhijitz · November 1st, 2013, 09:04 PM

There is a recess at the far end of the airbox. The filter has to go all the way IN to the recess. The K&N is slightly thicker than OEM, so sometimes it is usual for the filter not to fit all the way into the recess.

I have a K&N and when i service it, it usually takes 2-3 tries to get it fit into the recess. It doesnt stick out to the extent that i would have to press the cover.

October 29th, 2013, 06:59 AM	#1
gkarats ninjette.org member Name: George Location: vancouver Join Date: Oct 2013 Motorcycle(s): 08 Ninja 250r Posts: 23	K&N Air filter hi guys/gals this has probably been covered more than once, but unfortuneately the search function is not working on my tablet. I installed a k&n airfilter ka-2508. The cover did not sit flush with the airbox (until i bolted it tight), filter was sticking out just slightly? After i tightened the allen bolts it looks fine, just curious if this is normal or do i need more grease on the lip to slide it in further? Cheers

November 1st, 2013, 07:18 PM	#6
Klint ninjette.org member Name: Clint Location: Ceres Join Date: Sep 2013 Motorcycle(s): 2009 Ninja 250R Special Edition Posts: 18	you may want to shim your needle with 1 washer for better performance if you notice that your bike doesn't want to stay on with a cold startup or lags at lower rpms. Installing the filter will make the bike run a bit leaner than it already is from the factory! I just shimmed with two washers and i have a K&n filter and Yoshi exhaust... it feels like a new bike! __________________________________________________ 2009 Kawasaki Ninja 250R Special Edition 2005 Lotus Elise Sports Pack

November 1st, 2013, 09:04 PM	#7
abhijitz ninjette.org sage Name: Abhijit Location: San Francisco Join Date: Nov 2011 Motorcycle(s): Many Two Wheels .. Posts: 611	There is a recess at the far end of the airbox. The filter has to go all the way IN to the recess. The K&N is slightly thicker than OEM, so sometimes it is usual for the filter not to fit all the way into the recess. I have a K&N and when i service it, it usually takes 2-3 tries to get it fit into the recess. It doesnt stick out to the extent that i would have to press the cover. __________________________________________________ [ex-AFM #828 \| SMUSA #828 \| Sponsors : MotionPro \| LeoVince \| Insurrection Racing Gloves \| QstarZ Laptimers + OEM Parts @ 30-40% OFF : Harry @ 1-877-437-1631,17 harry@hondaeasttoledo.com

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October 29th, 2013, 07:47 AM	#2
DaBlue1 Long Time Rider Name: Blue Location: Charlotte, NC Join Date: Sep 2010 Motorcycle(s): 2009 Kawasaki Ninja 250R Posts: A lot.	Improperly fitting filters have been reported more than a few times. Be careful not to over tighten the cover if the filter is not fitting properly. Bending or warping of the cover may occur. This may also cause some air to leak in too. A easy remedy is too shave a little rubber off on the ends of the filter to ensure a proper fit of the airbox cover.

October 30th, 2013, 12:04 AM	#4
ninja250r81 ninjette.org guru Name: scott Location: australia Join Date: Jan 2012 Motorcycle(s): 2012 ninja 250r se Posts: 435	i had to shave some rubber off with a razor blade for mine to fit