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  #1  
Old 09-06-2022, 11:09 AM
UrbanM UrbanM is offline
 
Join Date: May 2019
Location: Salt Lake
Posts: 63
Default Air Filter

Group,
I am awaiting the return of my engine from the local shop. In the meantime Iím cleaning up a few things forward of the firewall. Quick question about the K&N filters. I understand these to be lifetime for automotive use and mine looks good and is serviced regularly but it is original to the plane (2006).
Is there a recommended replacement interval for aviation use?
Thanks,
Kirk
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  #2  
Old 09-06-2022, 11:26 AM
azrv6's Avatar
azrv6 azrv6 is offline
 
Join Date: Mar 2006
Posts: 361
Default

They shrink over time, read this thread:
https://vansairforce.net/community/s...d.php?t=109144
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RV-6, O-360-A1A, C/S
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  #3  
Old 09-06-2022, 12:04 PM
Roadjunkie1's Avatar
Roadjunkie1 Roadjunkie1 is offline
 
Join Date: Jun 2017
Location: Erie, Colorado
Posts: 345
Default K&N air filters

Quote:
Originally Posted by UrbanM View Post
I understand these to be lifetime for automotive use and mine looks good and is serviced regularly but it is original to the plane (2006).
Is there a recommended replacement interval for aviation use?
Kirk
They are "lifetime" for automotive use but the airflow is a bit different coming into an automobile air cleaner system. Mine was showing some wear on the "leading edge" where the air pressure and bug hits are the most evident. I have a replacement in its box on the work bench. The original has 1120 hours and 30 years on it. Could I still use it? Yeah; but why not replace something that is relatively inexpensive....? There is some talk about using a larger version to avoid the silicon plug on the original size. Previously discussed......search K&N filters....
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  #4  
Old 09-06-2022, 08:35 PM
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RV6_flyer RV6_flyer is offline
 
Join Date: Jan 2005
Location: NC25
Posts: 4,007
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My RV-6 will be 24-years old in about a week. After 3,500 flying hours, I am on my third air filter. Two filters lasted 3,500 flying hours.

I replace the filter on condition. It does get cleaned and re-oiled with the kit that Van's sells. (It is less expensive from Van's than anywhere else that I can find.)

Over time in service and or flying hours, the rubber and or the filter media will deteriorate and if it looks bad, it is time to replace.

I typically have one air filter sitting on the shelf so that there is no excuse not to replace if I do not like the way it looks.
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