Exhaust Valve Failures
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- čas přidán 8. 07. 2024
- Savvy maintenance expert Mike Busch discusses exhaust valve failures. He explains how and why they fail, the consequences of such failures, how to prevent them, and how best to detect incipient valve failures before they happen. Savvy Aviation offers Professional Maintenance Services to owners of General Aviation aircraft, such as: Savvy Mx (Professional Maintenance Management), Savvy QA (Expert Consulting), Savvy Prebuy, SavvyAnalysis (Engine Data Analysis) and Savvy Breakdown Assistance. For more info see savvyaviation.com and www.sportys.com/pilotshop/spor.... This channel offers videos about those services, and webinars hosted by Mike Busch which were produced by the Experimental Aircraft Association (EAA) and sponsored by Aircraft Spruce and Specialty.
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These webinars are extremely valuable. Thanks to everyone for putting out this content. 👍
Over 3,300 views and only 35 likes? Tough crowd.
These webinars from Mike Busch are some the most knowledgable data one can acquire on the operation of an aircraft engine. Thank you, Mike.
@@rustysummers3217 I understand. The way I look at this is to paraphrase MLK. I judge Mike Busch by the content of his knowledge and presentation, not the “color” of his presentation. Much rather listen to someone who knows the subject rather than a smooth talker who might be good at selling used cars. The knowledge you gain is certainly worth the time.
Every aircraft owner should make the effort to be involved in the maintenance of his or her aircraft. Your plane will be happy, as well as your wallet.
@@rustysummers3217 I can’t transport my family and supplies to a remote cabin with an Ultralight, and if you didn’t build your experimental you can’t do the Condition Inspection. The key word is supervision for doing your own work beyond 43.13, just like someone working off his experience for his A&P license in a shop.
I just don’t think a pilot should be like the guy who has to take his car to the dealer to check the transmission fluid level or even change the oil because he doesn’t know how. That guy is going to miss something that is eventually going to bite him.
I know a guy who was going flying after he saw a big prop oil leak on his hangar floor and a wet prop above it. He didn’t understand the system or the consequences. Could he change a tire or troubleshoot and change a bad spark plug while flying the backcountry with no A&P in sight? All legal under 43.13.
I have many examples I have witnessed over the years of how knowing your airplane is better than not knowing it. Of course, a man has to know his limitations. Thank you, Inspector Callahan.
This is amazing information! The whole thing is pure gold. Thank you Mr. Busch. Scary that a run of cylinders could be substandard brand new right out of the box. If only one could find a list of the shops who do the best cylinder overhaul work . . . talk about exacting specifications! Many shops to choose from out there. And most of them screaming in print how qualified they are. One cannot choose based on advertising alone. After you get over that hurdle, then who is to install . . . These are the enduring questions that plague aircraft owners wanting to get a good night's sleep when confronting a stuck valve : )
this engine stuff is my passion thanks for share.
Due to running LOP for 2 year I have had not one but 2 exhaust valve failures. Lycoming tells me it is directly related to the practice of LOP cruising as instructed by Savvy. That's too bad because it does save a lot of fuel but it hell on YIO-390 exhaust valves. I had one freeze open and unfortunately one froze closed and bent the rod and shroud. I am having the cylinder pulled to inspect the cam. I hope it is not worse than just the rod bent.
Question without notice gentlemen……. 0-235 #4 cylinder, found a crack in the head of the exhaust valve surround. Exhaust Valve was good, colour and pattern 63psi compression leak test, other pots 72psi.
What would cause the crack vertically on the head that surrounds the valve stem and guide, parallel to the valve line?
It was great for the A&P to pull the cylinder during the 100 hourly (IMHO), we found a problem and now correcting it with a new cylinder.
is it common practice to pull the engine through before cranking to listen and feel for compression leaks?
Having had valve drop in flight and puncture the piston resulting in forced landing i am suspicious of strange noises from any engine.
Mike, Any chance you could update the video with higher resolution? The video quality is pretty poor... Also needs an update on borescope options now available.
Not sure why people use these dinosaur lycoming and continental engines, they are such poor quality. Modern liquid cooled, higher revving, DOHC, bucket lifter engines solve all of these problems.
The certified aircraft we fly, haven’t been approved to install the type of engines you mention yet. That’s why.