|
-
POSTING RULES

-
Donate yearly (please).
-
Advertise in here!
-
Today's Posts
|
Insert Pics
|

06-11-2011, 09:27 AM
|
 |
|
|
Join Date: May 2005
Location: Concho, Arizona
Posts: 177
|
|
shrunken K&N filter
Re: K&N filter # E-3450 in 360 fab box. @ 600 hrs.
Durring this last condition inspection cleaning & re-oiling the filter, I noticed it didn't fit into the fab box like it orginally did. What?  Checked the specs on the K&N filter web site.. it was smaller..  It fit correctly when first put together & didn't notice this on any earlier inspections.. So, ordered a new one from Van's... New one fits as it should..  Also orginal one was not quite as tall as the new one hence, maybe not sealing up against the top plate quite right... I can understand that, but why it shrunk in diameter..? 
Wonder if anyone else has this happen too, or did I miss the 'replace after blank hours' instruction...?
Sheldon
Orginal filter
https://picasaweb.google.com/lh/phot...eat=directlink
New filter
https://picasaweb.google.com/lh/phot...eat=directlink
About 1/16 inch shorter in height, more in some places
https://picasaweb.google.com/lh/phot...eat=directlink
Last edited by Sheldon : 06-11-2011 at 02:22 PM.
Reason: to show the pictures
|

06-11-2011, 10:58 AM
|
|
|
|
Join Date: Feb 2005
Posts: 110
|
|
solvents?
Could it be how you are cleaning the filter?
__________________
Jim Peck
San Francisco Bay Area
RV-7
|

06-11-2011, 11:29 AM
|
 |
|
|
Join Date: Jul 2007
Location: Petaluma, CA
Posts: 261
|
|
Same Here
I noticed the same thing in my RV-8 with an O-360 and Vans FAB. The original KN filter gradually shrunk over its service life. The shrinkage was mostly in the diameter, but a little in the height. The wear marks in the FAB tell the story. Sorry no pics, but I suspect this is the nature of the beast. The filter was replaced at 1000 hours, a reasonable service life in my opinion. When compared side by side, the 1000 hour filter was much smaller than the new unit and the new unit sealed much better.
__________________
Chuck Newman
Petaluma, CA
RV-8 N828RV
|

06-11-2011, 12:07 PM
|
 |
|
|
Join Date: May 2005
Location: Concho, Arizona
Posts: 177
|
|
I clean the filter using K&N sray cleaner per the instructions.. rinsing in water & letting it dry...
|

06-11-2011, 01:14 PM
|
 |
|
|
Join Date: May 2005
Location: Concho, Arizona
Posts: 177
|
|
Ok... the instructions on the K&N cleaner bottle says 'excesive heat will shrink the cotton fiber media'.. guess drying it outside in the Az. heat a no- no.. although it wasn't in direct sunlight.. Might be the answer.. Anyway, new one in place...
|

06-11-2011, 01:34 PM
|
|
|
|
Join Date: Aug 2005
Location: Atlanta, GA
Posts: 4,218
|
|
Mine shrunk in diameter, making it a bear to clean and reinstall after 6-8 years. $20 and a dab of RTV later, I replaced it with a new one. I figure it is an item on the "replace as necessary" list.
__________________
Kyle Boatright
Marietta, GA
2001 RV-6 N46KB
2019(?) RV-10
|

06-12-2011, 06:44 AM
|
 |
|
|
Join Date: Aug 2007
Location: Topeka
Posts: 323
|
|
Me too!
I thought it was my imagination. But, I remember initially it was a tight fit in diameter inside the fab. But, after the second cleaning per instructions and drying overnight inside the house, it is way smaller.
__________________
Steve Stucky
Topeka, Ks
N282S - VariEze 500+ hrs
N283S - RV-7 1400+ hrs
KC-135 A/D/E Boomer (Ret.)
|

06-12-2011, 06:50 AM
|
 |
VAF Moderator
|
|
Join Date: Jan 2005
Location: Pine Junction, CO
Posts: 655
|
|
100ll
Shrinking filters is a common problem. I think the rubber in the filter is not compatible with 100LL.
__________________
Gary "Seismo" Zilik
Pine Junction, Colorado
RV-6A N99PZ S/N 22993 SOLD
|

06-12-2011, 07:21 AM
|
|
|
|
Join Date: Feb 2005
Location: Abilene, TX
Posts: 725
|
|
...just want to throw in a word of caution here...and there are other threads that address this...
Be very careful about using rubber seals, gaskets, etc. in the FAB to tighten up a shrunken filter. Loose stuff can get sucked-up into the carb & the big fan up in front of the plane stops turning. 
__________________
Sam Evans
RV7-A O-360 C/S
VAF#812
Last edited by TX7A : 06-12-2011 at 07:23 AM.
|

06-12-2011, 07:44 AM
|
 |
|
|
Join Date: May 2005
Location: Concho, Arizona
Posts: 177
|
|
'Cotton fiber media' (per K&N)... wet it, dry it.. cotton shrinks.. If it does after couple (or more) cleanings & doesn't fit right, time for a new one... cheap.. Cheaper via Van's than at K&N's web site by $7.54... 
|
| Thread Tools |
Search this Thread |
|
|
|
| Display Modes |
Linear Mode
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
All times are GMT -6. The time now is 03:59 AM.
|