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01-26-2014, 05:48 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 4,538
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The Amazing Shrinking Air Filters
I find this all the time...
Wrong:
Right:
The E3450 you get from Van's is not the same as the E3450 from Spruce or other sources, the smaller ones lack the 'B" suffix seen here:
I've not found another source other than Van's for the correct filter.
__________________
Walt Aronow, Dallas, TX (52F) RV7A, IO360, C/S, 1500+hrs
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
Last edited by Walt : 01-26-2014 at 07:49 PM.
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01-26-2014, 06:50 PM
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Join Date: Feb 2005
Location: Abilene, TX
Posts: 663
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Maybe this?
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Sam Evans
RV7-A O-360 C/S
VAF#812
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01-26-2014, 07:04 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 4,538
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That's my point, the A077A6 is not the same as the A077A6-B but both are listed under the same E3450 PN.
__________________
Walt Aronow, Dallas, TX (52F) RV7A, IO360, C/S, 1500+hrs
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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01-26-2014, 07:05 PM
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Join Date: Jan 2005
Location: MKE
Posts: 1,476
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The K&N filters are known to shrink over time, whether from heat or some other reason. How old/ how many hours on the one in the first pic?
I've bought E-3450 from Autozone and it's the same as the one from Vans. Same K&N part #, stands to reason it's the same unit.
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Jeff Point
RV-6, RLU-1 built & flying
Tech Counselor, Flight Advisor & President, EAA Chapter 18
Milwaukee
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01-26-2014, 07:48 PM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 4,538
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I guess I'll just have to go buy one at AZ and then compare it to the ones I get from Van's.
I've seen this at least half dozen times, perhaps they all shrunk exactly the same amount 
__________________
Walt Aronow, Dallas, TX (52F) RV7A, IO360, C/S, 1500+hrs
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
Last edited by Walt : 01-27-2014 at 07:03 AM.
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01-27-2014, 04:53 AM
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Join Date: Jan 2005
Location: MKE
Posts: 1,476
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Are you saying you've never seen these filters shrink over time? Also, I'm still curious how many hours were on the smaller one. We could be talking about two completely separate issues here.
__________________
Jeff Point
RV-6, RLU-1 built & flying
Tech Counselor, Flight Advisor & President, EAA Chapter 18
Milwaukee
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01-27-2014, 05:31 AM
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Join Date: Aug 2005
Location: Atlanta, GA
Posts: 3,114
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Quote:
Originally Posted by sprucemoose
The K&N filters are known to shrink over time, whether from heat or some other reason. How old/ how many hours on the one in the first pic?
I've bought E-3450 from Autozone and it's the same as the one from Vans. Same K&N part #, stands to reason it's the same unit.
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Same here.
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Kyle Boatright
Atlanta, GA
2001 RV-6 N46KB
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01-27-2014, 05:53 AM
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Join Date: Jan 2005
Location: Venice, Fl
Posts: 1,020
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Quote:
Originally Posted by Kyle Boatright
Same here.
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+3 I just bought one for my recent condition inspection (240 hrs). Amazon ($32 IIRC) and it fit perfectly (E-3450). Yes, I cleaned the old one last year per K&N but didn't want to mess with it this year. The new ones come oiled and ready to go.
Walt,
do you have any connections at K&N so that you could check with them and settle this once and for all and have it made into an VAF engine sticky. Comes up all the time. Especially, when well respected AP guys, like yourself, have issues with the E-3450.
As and additional note, I read somewhere (probably here on VAF) that K&N was contacted and stated that the mold had not changed and the "Oil before Use" caution on the molded part was outdated. They come pre-oil'd.
__________________
Gary Palinkas - Gman.... VAF #161
Venice, Fl
RV-6 "Sassy" Flying 400 hrs since Oct 2011
Lycoming 0-360 A1A, FP Sensenich Prop
SARL #19 .... Van's Calendar March 2015
Although exempt several ways, =VAF= Dues paid to support this awesome site/family
Last edited by GLPalinkas : 01-27-2014 at 06:24 PM.
Reason: added text
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01-27-2014, 06:11 AM
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Join Date: Sep 2005
Location: Maple Grove, MN
Posts: 2,031
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They do indeed shrink. I believe I'm on my 3rd filter in 12 years. The latest one doesn't seem to be shrinking as much, but the first two looked like the OP pic after about 4 or 5 years.
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Alex Peterson
RV6A N66AP 1600+ hours
Maple Grove, MN
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01-27-2014, 06:46 AM
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Join Date: Aug 2005
Location: Dallas/Ft Worth, TX
Posts: 4,538
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Ok maybe they do shrink that much over time, I know they shrink a little when you wash them but I had no idea they would shrink this much!
This particular aircraft only has about 450 hrs on it and is about 5 yrs old.
Maybe someone can post the ID/OD of the replacement filter they bought (with no 'B' suffix) and I'll get the same on the new Van's filter.
__________________
Walt Aronow, Dallas, TX (52F) RV7A, IO360, C/S, 1500+hrs
EXP Aircraft Services LLC
Specializing in RV Condition Inspections, Maintenance, Avionics Upgrades
Dynamic Prop Balancing, Pitot-Static Altmeter/Transponder Certification
FAA Certified Repair Station, AP/IA/FCC GROL, EAA Technical Counselor
Authorized Garmin G3X Dealer/Installer
RV7A built 2004, 1700+ hrs
Website: ExpAircraft.com, Email: walt@expaircraft.com, Cell: 972-746-5154
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