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01-02-2013, 01:09 PM
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Join Date: Jun 2005
Location: Cedar Park, TX
Posts: 3,152
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Unhappy Exhaust Valve
Submitted for the Peanut Gallery.
This is an unhappy exhaust valve. ECI O320 550 hrs on this jug which I just pulled last night. I'm not seeking any advice, but I thought some might like a picture, and the commentary might be interesting.
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Scott Card
CQ Headset by Card Machine Works
CMW E-Lift
RV-9A N4822C flying 2200+hrs. / Cedar Park, TX
RV8 Building - fuselage / showplanes canopy (Done!)
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01-02-2013, 01:15 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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Un happy is a pretty mild term for what I see 
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Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010 
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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01-02-2013, 01:15 PM
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Join Date: Jan 2005
Location: Marion IA
Posts: 1,095
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how did you know it was unhappy?
Hi Scott - just wondering what made you pull the jug? Low compression?
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Dave Gribble VAF #232
Building RV-9A N149DG (slider, IO-320, IFR)
Restored and Flying Beech Super III N3698Q
Marion IA
Struggling with fiberglass
There is no sport equal to that which aviators enjoy while being carried through the air on great white wings." Wilbur Wright, 1905
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01-02-2013, 01:20 PM
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Join Date: Mar 2008
Location: Seattle
Posts: 1,412
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Great pic, of unmolested (not touched or cleaned or grimey) problem.
Classic hot rim on that valve.
I wonder? did you notice it as a poor mag check, or hear a hiss in the exhaust pipe while pulling the prop thru on pre-flight?
Anyway, thanks for sharing.
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Scott Emery
http://gallery.eaa326.org/v/members/semery/
EAA 668340, chapter 326 & IAC chapter 67
RV-8 N89SE first flight 12/26/2013
Yak55M, and the wife has an RV-4
There is nothing-absolute nothing-half so much worth doing as simply messing around with Aeroplanes
(with apologies to Ratty)
2019
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01-02-2013, 01:25 PM
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Join Date: Nov 2007
Location: Spearfish, SD
Posts: 67
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Unhappy valve
Sure would be nice to hear more of the story. A pic may be worth a thousand words, but a pic and a history are needed to tell the whole story.
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01-02-2013, 02:13 PM
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Join Date: Dec 2005
Location: Sedalia, Colorado (KAPA)
Posts: 320
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Valve
I will bite. Irrefutably caused caused by LOP operations with mogas, electronic ignition, fuel injection, high compression pistons, oversquare operations and the wrong brand of motor oil. Ha!
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Duane Zavadil
RV-6a, IO-320
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01-02-2013, 02:17 PM
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Join Date: Jun 2006
Location: 8I3
Posts: 3,562
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Interesting that the valve face is well below the seat.
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Please don't PM me! Email only!
Bob Japundza CFI A&PIA
N9187P PA-24-260B Comanche, flying
N678X F1 Rocket, under const.
N244BJ RV-6 "victim of SNF tornado" 1200+ hrs, rebuilding
N8155F C150 flying
N7925P PA-24-250 Comanche, restoring
Not a thing I own is stock.
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01-02-2013, 02:17 PM
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Senior Curmudgeon
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Join Date: Sep 2005
Location: Dayton Airpark, NV A34
Posts: 15,408
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Quote:
Originally Posted by zav6a
I will bite. Irrefutably caused caused by LOP operations with mogas, electronic ignition, fuel injection, high compression pistons, oversquare operations and the wrong brand of motor oil. Ha!
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And the wrong primer on the firewall 
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Mike Starkey
VAF 909
Rv-10, N210LM.
Flying as of 12/4/2010
Phase 1 done, 2/4/2011
Sold after 240+ wonderful hours of flight.
"Flying the airplane is more important than radioing your plight to a person on the ground incapable of understanding or doing anything about it."
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01-02-2013, 02:32 PM
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Join Date: Oct 2005
Location: 08A
Posts: 9,476
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Obviously a nosewheel airplane......with a woman pilot.....
v
v
v
v
v
v
v
v
v
Incoming! 
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Dan Horton
RV-8 SS
Barrett IO-390
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01-02-2013, 02:44 PM
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Join Date: Dec 2005
Location: Sedalia, Colorado (KAPA)
Posts: 320
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And
It only serves you right for having the ambition to pull jugs on New Years day. In a place as fun as Austin. Shame.
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Duane Zavadil
RV-6a, IO-320
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