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  #11  
Old 06-26-2021, 10:54 AM
Lycosaurus's Avatar
Lycosaurus Lycosaurus is offline
 
Join Date: Mar 2006
Location: Ottawa, ON
Posts: 663
Default

Quote:
Originally Posted by plehrke View Post
How/why are you modifying the filter?

I too need to modify the filter as the slightly off center snout in the filter box from intake snorkel to my Bendix fuel servo puts the heads of two of the bolts that hold on the servo under the filter. I carve out a bit of relief in the rubber upper cap of the filter to accommodate. The good thing is that it really traps in the “ever decreasing” filter. What I don’t like is that I can’t clock the filter differentially each annual to change which section of the filter faces forward and gets all the bugs.
There is an accelerator pump protruding right where the filter fits, and instructions call for this modification on the MA4-SPA carb'd o-320. See
https://vansairforce.net/community/s...d.php?t=132716
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RV-9A Ottawa, Canada
First flight Dec. 18, 2008
> 1,000 hrs tach.
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  #12  
Old 06-29-2021, 01:15 PM
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Lycosaurus Lycosaurus is offline
 
Join Date: Mar 2006
Location: Ottawa, ON
Posts: 663
Default Replacement received

Just received the replacement filter (E-3260) from K&N. Looks like they took one off from the production line since the date code indicates June 21st.

Advice: Make sure to actually measure the dimensions of your new filter, as the box may have been mis-labeled as mine was.

Measured the thickness to be 2.46". Good enough to start hacking away at it so it will fit under the carb. Kudos and thanks to K&N.

Thanks to everyone that piped with their comments/ideas on this thread.
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RV-9A Ottawa, Canada
First flight Dec. 18, 2008
> 1,000 hrs tach.

Last edited by Lycosaurus : 06-29-2021 at 02:22 PM.
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  #13  
Old 08-19-2021, 05:32 AM
uk_RV9A uk_RV9A is offline
 
Join Date: Jan 2013
Location: UK
Posts: 32
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Just to add, this must have happened to a whole batch of filters, not just one. Brand new filter purchased direct from K&N UK a month ago, opened box today, exactly same issue.
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  #14  
Old 08-19-2021, 06:34 AM
FLY6 FLY6 is offline
 
Join Date: May 2010
Location: Burlington On. Ca
Posts: 173
Default Lucky

I feel lucky, mine came from ACS and was as advertised but I did find it was not quite as high as my old one. Had to add three washers so it would seat.
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Flying RV6, O-320, 160hp
Burlington, On
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  #15  
Old 08-19-2021, 07:25 AM
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Vlad Vlad is offline
 
Join Date: Oct 2008
Location: Utah
Posts: 8,419
Smile Unlucky this time

I change filter every two years on average. I was unlucky this time ACS sent me a bigger one. Exchange/return would take a lot of time I decided to do a surgery to it.
Sharp blade, safety wire to stitch, a bit of RTV and I have correct diameter



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  #16  
Old 08-19-2021, 08:17 AM
uk_RV9A uk_RV9A is offline
 
Join Date: Jan 2013
Location: UK
Posts: 32
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Seems to be quite an issue with K&N quality control if we are all ordering the right size filters, and receiving smaller and larger than spec!
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  #17  
Old 08-19-2021, 08:29 AM
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Bill Boyd Bill Boyd is offline
 
Join Date: Sep 2006
Location: Landing field "12VA"
Posts: 1,687
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You can take the Russian out of the Motherland, but you can't take the ingenuity out of the Russian.

Impressive surgery, Vlad.
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Bill Boyd

Hop-Along Aerodrome (12VA)
RV-6A - N30YD - Built '98 / sold '20
RV-10 - N130YD - 50 hours +
65 years running stock DNA
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  #18  
Old 08-19-2021, 10:13 AM
jchang10 jchang10 is offline
 
Join Date: Nov 2005
Location: San Francisco, CA
Posts: 526
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https://tempestplus.com/product/induction-air-filters/

Tempest has air filters now. I would love to support a quality aviation company like Tempest vs. K&N who does not even want aviation use.

However, have not had any luck getting specs on their filters, yet. I even asked Van's to look into it.

Maybe if others start asking, too, we can get some response.
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  #19  
Old 08-19-2021, 07:40 PM
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drill_and_buck drill_and_buck is offline
 
Join Date: Feb 2005
Location: Bridgewater, MA - KPYM
Posts: 473
Default RTV + Fuel = Mush

Hey Vlad,

I would keep an eye on that RTV seam. Any contact with fuel would turn it to mush. Injesting a blob of RTV could cause a problem. It might just pass through the system or create a problem. I think there was a previous post about an RTV blob getting stuck in a portion of the venturi in the throat of the carb causing a power outage. Take care!

Mike
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RV-8 N468RV
First Flight 11/13/2011
TMX0360, Dual Pmags, CS
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  #20  
Old 08-19-2021, 07:47 PM
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Vlad Vlad is offline
 
Join Date: Oct 2008
Location: Utah
Posts: 8,419
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Quote:
Originally Posted by drill_and_buck View Post
Hey Vlad,

I would keep an eye on that RTV seam. Any contact with fuel would turn it to mush. Injesting a blob of RTV could cause a problem. It might just pass through the system or create a problem. I think there was a previous post about an RTV blob getting stuck in a portion of the venturi in the throat of the carb causing a power outage. Take care!

Mike
Thanks Mike appreciate the reminder. I am aware of it. The seam is closed shut inside without any RTV protruding. How have you been? How is CJ haven't heard from him for a while.

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