Cylinder Replacement Gone Bad - Grumman Style
ฝัง
- เผยแพร่เมื่อ 11 มิ.ย. 2017
- Cylinder Replacement Gone Bad - Grumman Style: Annual on airplane was signed off with a compression check needed 10 later since it was at 68/80 leaking past exhaust. Second check after 12 hours was 50/80 leaking past rings or intake. Pulled cylinder to change and discovered broken top compression ring, and discovered spalled cam lobes and spalled cam followers (tappets). Time for a engine overhaul.
![[TH] Esports World Cup : Point Rush Stage](http://i.ytimg.com/vi/eLU-jnYp3Zs/mqdefault.jpg)
![USAB Showcase: Australia vs USA [OFFICIAL STREAM]](http://i.ytimg.com/vi/keiEr_MOaSQ/mqdefault.jpg)
The comments are more fun than the video. Apparently they all expected you to have rolled the airplane into a NASA clean room and had a SuperUber Certified Grumman A&P Mechanic with 130+ years experience and wearing a clean-suit to spend 6 months removing each part and clean/inspect/measure/test/calibrate/refurbish them one by one before going on to the next nut or bolt. And the wailing in hell when a CARPENTERS hammer was used to strike a drift instead of a Grumman Certified $500.00 dead blow hammer brings tears to my eyes. Keep up the good work. :)
@Dillan Baker Why not, I've been a "Shadetree Mechanic for over 40 years and do good work to a high standard. Key points to Teardown are 1) speed, 2) do no damage, 3) look for clues and other problems. After this is cleaning and inspection, and the last part , assembly, is where the skill and knowledge make you money and make a happy customer.
@Dillan Baker Thus speaks a man who has only been paid by the hour or has a yearly salary. Get paid by the job and you don't faff around on the less important bits. Time wasted is money lost. Oh, if I wasn't good or I was doing it "Wrong" I wouldn't have generations of repeat clients. My best is a Granddaughter so far! Just a child's bike but the trust is there.
Glad you liked it
14:42 - Good to see the village carpenter brought along his claw-hammer to help in case anything needed hitting. (Also useful for prying off stuck cylinder heads and covers)
Could work!
Great video. Thanks for demonstrating maintenance that prevents an accident!! I love the idea of the twisted rag to grip the pushrod shroud.
Glad you liked it
the corrosion problem is probably partially due to the engine sitting for extended periods with old engine oil. Combustion byproducts combine with water condensation to make corrosive acid and these acids will destroy cams, cranks, bearings and cylinders very quickly. it is very important to change oil before the engine sits even if the hours since the last change are relatively low. Obviously the person responsible for this aircraft has been deferring maintenance for quite a while.
ihdieselman basically at this point it would need a engine overhaul
That is why when you start any engine The oil must get hot enough to get rid of the Moisture.
A lot of Pilots that do not know any better go out to the field and start there engine and start it for 5 min or 10 min. then shut the engine off. OMG they are killing their Engine little by little. No one tells pilots not to do this. The A and P should be telling the Owners. That is never happen as most or 99% of the A and P's do not know that.
Yep
@@ctsteve1967 Yeah, if you have any sort of vehicle that's started only occasionally, you need to run it 30 minutes or until the oil gets up to 180F, when you do start it. Not getting the oil to full temperature is worse than not starting it at all.
hahaha. these guys are so inspiring, they boost me right up before going into the aviation industry. I just got my A&P. Their jokes, comments, and just the way they do work is stupendous. Funniest thing I've seen on YT. They should have a comedy show.
It's a comedic tragedy... and a disaster waiting to happen.
Please don't work like they do.
@@scofab Yep, these old boys are going to kill their customers, shocking trade practices.
Maybe we will
Yikes !
Thanks for the reply. I understand. There has been so many crashes this year, life`s lost needlessly It gets me so upset. And the biggest cause is fuel depletion. Not switching to a tank with fuel. Trust me trust your gauges. Thanks again for the reply. SKY 🤕😎
No worries, fly safe.
I don't know anything about air plains. But I do know when you get to many people working on the same thing things get missed or not done properly.
that's very true.
How true...you can’t even spell airplane!
@@johnorchard6158 hahahaa yeah but he is completely correct. Put it back together and find extra parts when done!
Ya it has me cringing too many people doing different things tossing parts on the floor...
Agree
"I'm missing three sockets out of my other toolset", something you should never ever hear in any aircraft hangar, this is a cowboy outfit.
yes he must have left them inside that last engine rebuild ???
@@WayneCook306 Eh they're just the 10mm sockets. 1/4, 3/8, 1/2 drive 10mm sockets just disappear into the ether.
@@TestECull And 1/8 drill bits, everybody steals the 17 mill spanners.
@@TestECull lost tools = trash worker.
@@rbarnes8169 No. Lost tools = human being. Everyone loses things once in a while.
What a neglected airplane! Do these people that own and fly these things not realise that if the engine fails, you can't park it up and thumb a ride home. Unless you get real lucky.
Good work guys. Thanks for sharing.
Glad you liked it
Been an I&A since 2017 and from this video is the reason why it’s the aircraft owner and myself, 3 people is 1 too many.
Looks like someone has been skimping on their annuals and the person with their safety wire skills should not even touch anything that resembles safety wire pliers!!!!!!! This engine looks to be way past calendar TBO as well. WOW!!!
It had happened
There does come a time when it's okay to say "Crate motor and accessory support kit" or at least a voltage regulator and condenser lol. Fun video.
It did come off and get overhauled. FYI
@@GrummanPilots Oh I imagine. The ole gal deserved (needed) it. Great video.
I had an old Tiger that looked just like this parked next to my then new aircraft about 6 year ago. The guy who owned it always seemed to have to perform maintenance before flight. One time I arrived at the hangar and he was reverse bleeding the brakes. I asked him what the problem was but I can't remember now what he said. But I do remember he said he had to do it if it hadn't been flown for a while.
It looked just like this one in the vid with the cowl off. I'm thankful he never asked me if I'd like to go for a a ride. Would have suggested we go for a spin in mine!!
ok
Next time we see this plane you will hear the phrase This week on air crash investigation.
It was restored
A well neglected airplane. Should provide many happy hours of refurbishing! The A&P who signed off the annual 12 hours earlier is a shyster.
That depends on whether that sign off was twelve flight hours and, say, sixty months ago.
Agreed
A&( can't sign off an annual!
@@DHMovie100 A&P can sign off 100 hr inspection, IA for the annual.
@@GrummanPilots Is it legal for an A&P to do the work *with* an IA and the IA sign off?
When I see a carpenters hammer in a mechanics workshop I'm gone.
Glad you liked it, all my ball peens were is use elsewhere
I have seen many people with a million dollar snap on tool set and yet still had no clue, dont always judge by tools
The biggest issue with GA aircraft is lack of use and poor storage. It's quite obvious this plane spent the bulk of its life tied down outside. Sitting. Rotting. High levels of condensation and moisture internal to the engine caused corrosion and pitting. From the corrosion evidence on the firewall, the fuselage and wing internals should all be inspected for hidden corrosion at all critical areas.
Pretty much. It was eventually trailer and got to a new home and is in Paint shop now for finish. Nice plane now. Lots of love and money and time.
The condition of everything ahead of the firewall makes the aircraft look like a "barn find" that was just forgotten and left sitting for years.
Could have been
The result of an aircraft not being operated enough to keep the rotating parts properly lubricated.
Long hours sitting in the weather, that evidence of water in the oil would not be restricted to just that problem.
I'd bet there's extensive corrosion right through that plane. I would also never pull a cylinder without a complete overhaul after such extreme compression loss,
it's just asking for trouble, but looking at the rest of the plane, it should be a scrap job anyway.
@@alasdair4161 Cars Engines also sit for years and years and years.
@@alasdair4161 There is a reason for the broken rings or rings.
Yes
AA-5’s are awesome airplanes. This little lady needs a good home and some TLC to make her shine again !
Glad you liked it, and she shines now
thanks my friend
k
too many chefs in the kitchen then throwing parts and tools on the floor
No respectable outfit in the business of aircraft maintenance would allow that many hands to touch an engine, certainly not casual passers-by and none would allow a picture of a claw hammer in a maintenance cart to make it as far as youtube. Cripes ahmighty, they're terrible.
OK
I did a job just like that on a piper lance.It have a great outcome.I miss those days!
Glad you liked it
Oh, I see you have the new Boroscope 1000, with automatic Blur-O-Vision. Sweet!
Nice
Someone will find that missing socket one day in the bottom of an oil pan..lol
Maybe
If I saw all that corrosion on a pre flight, I would be walking away from that one.
Yep
holy crap !!! who signed that thing off on its last annual?!!!! NOT ON MY WATCH!!!
Or mine
Good point mate, I will never take someone’s word the mags are off or the keys are out
Cannot be too careful.
Yeah, there was a number of things going on in this video that was disturbing. A general lack of best practices and haphazard application of mechanical technique to start with.
Not cappping lines. Not protecing the open induction port. Not removing baffle. Not disconnecting all the plug wires. Not determining top dead centre of the piston on the affected cylinger. Not manually grounding the magnetos. Not bagging parts as dissasembly occurs. Hitting the valve shaft with what appears is a metal punch, not a brass or fibre punch.
The general condition of the cam and lobes made it lucky you found these conditions because this engine was not airworthy.
Lots of jocularity considering how messed up and grotty that engine and engine bay was.
With a title of 'Cylinder Replacement Gone Bad' you were expecting something different I say.
Been an IA since 1972 and these boys don't impress at all!!
claw hammer?
@@johnaustin6673 These boys are living proof that Charles Darwin was right!!
that's why IAs have IAs inspect their work
I have not much idea what I'm looking at but the mechanical skill really seems to be lacking. Don't work on my aircraft. :-)
Larry, Moe, and Curly.
Look a future lawn dart!
Restored now
AVCO stamped rocker covers are old. I'd bet this engine has never had a major. Two numbers punched in the rocker shaft boss... cylinder done twice. Cam spalling due to rust. Either not run often or not long enough to drive off moisture. I'm sure it's full of metal from the lifter/cam failure but odds are the crank is a standard. Rough but salvageable. Whatever IA signed the annual should be walked to the nearest tree.
Glad you liked it
Ya wanna know what flipped my switch? Ok, the wrench monkeys were especially entertaining, but that wasn't the worst thing. "Keys out?" And then before he gets an answer he's turning the engine over WITH THE PROP UNDER HIS ARM!!! If he's unsure of the switch state, WAIT! Even if you ARE sure, stay out of the blade path! There's a little thing called a bad kill wire that WILL let the engine fire, and on THIS wreck, I'd assume EVERY wire was broken until I visually proved otherwise. GOD ALMIGHTY what a bunch of yahoos!!!!
Shaun Olinger Did you happen to notice the ignition system? At least on the right the ignition leads were disconnected. Nothing would’ve happened as long as all leads are disconnected. But I agree it’s a good practice to watch the prop and ensure the keys are removed.
Maybe
I've never known a real mechanic so in love with a flat screwdriver #suspicious
Comes in handy
My attention was always pointed to the shameful condition this aircraft is until I saw the towelwrench tool..
All he needed to do was pull the cylinder off or there is a lip on the crankcase end that allows you to pop them out
ok
Oil analysis might have caught that cam spalling, probably would have shown up as high Iron on the report. Then again considering the condition of the rest of the plane, I doubt the prior owners were conscientious enough to do something like oil analysis.
Another tell tale sign would have been metal pellets in the oil filter. The chipped off material has to go somewhere.
Would be interesting to see what the bearings looked like, I bet they were shot too.
All good points, not all owners are so stringent.
Make sure to rotate that prop while the thru-bolts are out. It's a good idea to spin the main bearings off the oil ports every now and again.
Great idea
@@GrummanPilots I almost spit out my coffee. 😂
I would think that that kind of cam damage was leaving a lot of metal in the oil filter no? When I do my O-290 annual, I cut the filter and remove the pleats and wash them in varsol, then drop in a neodium name tag magnet into the dirty varsol and swirl it all around to pick up whatever ferrous metal was washed out. So far all I get is a little ring of ferrous grey paste sticking to the magnet. If my cam was going I'd expect to see larger fragments or chips or slivers of steel.
That tells you almost nothing about what wear is occurring, when and at what rate. If you want to track things like that try pulling oil samples and having them tested on a regular basis.
k
@@deeremeyer1749 Yes but in this case I'm just interested in the engine shedding significant amounts of metal, and on Lycs it's slivers from the cam lobes and followers. Sending oil out for analysis is a whole other level.
All I can say is dauuuum on so many different levels!
Yep
Note to self, don't record myself working on airplanes and upload it onto TH-cam.
This plane was restored
Seeing the pliers was bad enough. If I'd seen a crescent wrench ...
I was waiting for the pipe wrench. With a cheater pipe.
OK
What do they do with the extra parts left over when they put it back together?
No parts left over, put it back together for trip on trailer back home.
They stick the left over bits down the carb! Lol
Ebay!!!
What a shame. We used to do such nice work in Bethpage and Calverton.
Been told it was a great learning tool, and Grumman designed her to be simple, safe and with little automation so students would get used to a higher work load and greater speed on installed power . Kinda like teaching a guy to drive on a 5 speed mg, rather than an automatic toyota.. manual tank switch, higher performance, the student would come out of the syllabus more confident than on a 172, or a Cherokee.. it doesn't coddle the student, and they can transition more easily to older aircraft with less automation, or higher performance aircraft due to it's own higher performance,.. Strikes me as a good investment for a flight school. I think this was Grummans philosophy when Roy LoPresti modded her up from Bede's design..my opinion they should have sold her abroad as a military liason/ trainer instead of breaking into the saturated us market.. India, South East Asia, South America would have been great markets for this plane. give it some more power and range and it would do very well in Brazil..too bad to see this example in such bad shape..
Yep
Yep
Noy only time for overhaul but strip the entire firewall and clean everything up, engine mount fittings, engine mounting frame, relay boxes, baffles, everything! By the looks of the borescope pics, it was all caused by corrosion. This bird probably hasn’t been run for a long time before it developed this problem...
as a retired mechanic, I agree, that engine should be completely disassembled, inspected, cleaned, repaired and rebuilt to specifications.
Time for a major overhaul. Those in the know realize what that means.
Norbert Siewert $$$$$$!
Yep
Overhauled and restored
Everyone wants the 7/16's swivel. Hide 'em if ya got 'em!
OK
Valve/rocker assembly... Holy Buckets!!!
Yep
looked like water damage.. they called it spalling but this thing looks left outside which means wild temperature swings.. engine breathing in and out that air and keeping the water that was in it.. Kind of sad shape for an aircraft.. Do not think I want to put any hours on that one...
Time between overhauls is based on engine hours not decades tied down in a field. Light use may also allow oil on internal parts to dissipate and allow moisture to get at that metal. Time based atrophy takes a tole, like the Corvette a mother was keeping for her now deceased son driven less than 100 miles a year since the 80s. Just damp winter/spring/fall cycling outside can do that given enough time.
by the color of the oil looks like a lot of water is in the engine.
Plane restored, engine redone by Lycon
That one induction hose looks like it is full of holes because of the installed position of the hose clamps above it.
OK
That's the scary part about buying an older plane without a prebuy. You could end up with something similar and thousands of dollars worth of repairs.
Exactly, yet in the last month 5 people did buy without a prebuy just to get their hands on one.
And to thing these idiots work on this plane it’s scary id never let these idiots touch a wrench.
Informative video, Thanks to all
Exactly information you get, in how not to maintain or work on the Aviation Industry....
k
Looks like that one has spent a whole lot of time in Florida.
Someplace not flown
So the steadfast insurance policy of a $30 routine oil sample would have detected all of this.
If it had a baseline, but yes you would have had warning that it is coming. Thanks
Looks like the cracked ring is the tip of the iceberg...
It was
I'm very fortunate that I never had to work on equipment like this. I think he found it at an A&P School yard sale.
Now about a plane that flew here.
These guys already knew this engine and it's electrical system were going to have a major overhaul. Most likely they just wanted a quick look to see how worn that cylinder assembly had become.
Owner had a low cylinder and we had a spare, was going to put it on, but engine was done
Could the over heating be caused by the current condition of the engine baffling seal?
ya think
Yes
Poor engine :C
We have a little 150a that the pops and others overhauled 10 years ago, been working great since then, other than a recent sticky valve. Now it's my turn to help fix things if anything messes up, right now we may have to replace the battery or see if the relays are screwed. Wont start every now n then unless we charge it beforehand. Will always hand prop tho
Good luck with it, they are well engineered and will last a long time.
@@GrummanPilots It's a cute little trainer, getting my ppl this year in it (half way there :D )
You can tell they understand the mechanics of the engine. It’s the lack of cohesion, lack of teamwork, desire to one up each other, and arrogance that will put the pilot of that plane in grave danger.
Sorry that fun makes you ueasy
@@GrummanPilots - just glad I’m not the pilot. Have fun!
Grave Danger? Is there another kind?
Later in life ~ Eddie Haskell and Lumpy Rutherford opened a "jalopy airplane" repair shop. They specialized in worn out, dilapidated, corroded, Grumman's this is it. Grumman Style......
Good to know
Any pictures of the overhauled engine?
In the latest video
I was taught that the fewer people with their hands in the salad made for better results. Spalling? Perhaps the tappet damage can be called that but the cam pitting is just plain old rust pitting which resulted in the spalling of the tappet.. After seeing the claw hammer appear, I'd be reluctant to let those guys do an overhaul on anything I needed to stay running at threat of loss of life if it quits.
OK
As soon as I saw the silicone for tapped cover gasket I knew this engine should be either in the bin or stripped down completely then thrown in the bin
Why silicon?
Please do not fly over my house
k
The one downfall of lycoming engines, that darn overhead cam. Its the last to receive oil, and id say about 60% of all lycomings i work on have at least 1 flat cam lobe.
Yes a design flaw but if you fly it alot not really an issue with no sitting.
Are those Grumman certified sockets?
No, HF
Did someone dig that engine up from boneyard? What a POS. BUT I did learn something (seeing what the exhaust leaking past the guide looks like). So thumbs up.
No but redone now.
Wow, this engine is tired... .... (and tinkerd on by moped mecanics.. geee)
I have been less than impressed with the A&P mechanics I have encountered. I'm a master tech at car dealer, we have A&P mechanics(as customers) that can't put a water pump on a car. I wouldn't trust them working on my plane. Which is why I went experimental. S repairman cert makes sure my kitfox is in good hands.
Kris N real shame
@@krisn8820 aaaaaaaa
Thanks
Did that thing get annualed at the ford dealer or something?
No
9:53 and 10:07 cracked motor mounts?
Not what I could see in the little time available, you would be able to tell pretty quickly by rocking the prop anyway
replaced at engine overhaul in a few month down the road
Sad to see it looking so rough . Maybe owner needs to keep a closer eye on things. Would be dissatisfied with my maintenance organisation if they let it get into this state,screams of neglect. Can't believe watched somebody use a claw hammer on an aircraft,we joke about that shit!. Pull the motor,clean and inspect all the systems replace the worn out stuff and fit back up. A lot of rectification required.
OK
Looks like they are taking apart my dad’s 67 Rambler. Absurd how much GA cost considering majority of tech and designs are 50+ years old
Airplane costs are more than cars, so you are right.
This airplane looks like a flying restoration candidate
It is
LOVE THE FRAMING HAMMER are these guys real airplane mechanics? i wouldnt let them work on my lawnmower
Glad you saw the hammer, was it the orange or yellow one? All my good hammers were outside the hangar being used by other mechanics on their work. Thanks for watching.
Owners leave there aircraft outside in all types of weather and it corrodes the engine all to hell. Amazes me that more GA do not fall out of the sky based on the condition of this aircraft alone.
OTTO runs for a long time even broken.
yrp
Holy Cow... What a serious case of neglect. Poor thing. Rusted electronics.. dry rot rubber... just unbelievable. Where's the video of the owner being arrested? On the positive side, this is a great plane. You don't have to be a millionaire to renew this one. With a little bit of DIY, she can be brought back to sweetness.
Yep
I'm guessing the engine sat for years inop?
Low flying yes.
might as well overhaul the 7058 ford alternator while its open. I surprised no one pulled out a blue tip crescent.
Not needed yet
I'm not a pilot, but "DAMN" !!! How could that plane be safe to fly?
It was not now
I've seen bicycle mechanics more conscientious than these guys! The amount of rust on this plane does not inspire me with confidence. What other little secrets are waiting to be discovered before they lead to a failure?
It came to us, not maintained by us.
Thats why you should only fly planes that leak oil, they never rust!
Holy smokes , someone could grow old and retire working on that tiger .
ok
I wouldn’t let those guys work on my lawn mower
Looks like a lawn mower engine
fucken claw hammer
That's what I thought, a brass drift would had been better.
i agree..
@@aramirez8427 and I thought I was the only one to notice that! hahaha!
So many components extremely rusted in engine compartment , is that normal ?
NO!!!! I don't know what the boxes on the firewall we're, looked like regulators or something similar, but they sure as HELL should not have looked like THAT! This poor airplane needs a better owner!
Far from normal!
NOt with regular use
I got Grumman AA5 my fuel was leaking, how many hours does it take to remove left wing and sealed the tank and then put back in?
The easy past is the wing off and wing on about 2 hours for all of that. Scrapping the old sealant out, cleaning and then reseal can take several days.
@@GrummanPilots thanks I was just checking my engineer took 24 to 26 hours , and I found another engineer saying you don't need to take wings off you take panels off then remove the tank it takes 14 to 16 hours all completion.
Mayday, mayday, mayday!!
Yes
A lot of internet experts in this comment section trying to prove their superiority by passing judgements on the owner of this airplane. First thing: the condition of the engine's exterior (particularly the valve covers) is not an indicator of the engine's internal conditions. I see engines with more rust that this run like absolute champions and those with almost pristine paint jobs operate like crap because of the way the instructors and student pilots mishandle aircraft in the flight school environment I work at.
I saw nothing unusual about the condition of this aircraft, at least insofar as hallway into the video. Airplane's just old.
Planes get worn and not always kept up
Looks like a humid area plane that sat a long time. I wouldn't be too critical not knowing for sure who has maintained it in the past, many assumptions below. Was this a recent purchase? A deal too good to pass up? I would need to know more before blasting those mechanics.
Yep
it WAS a nice airplane...YIKES
Yep
Scary riding in this plane
Not now, it was fully, better than factory new restored. Sold for $225,000 USD. We have a video on it.
Shameful condition of everything under the cowl........who maintains or flies an aircraft in that shape ????..........shameful..........and then advertises it on YT..
I'm not an airplane mechanic, but I fly them - in all areas of aviation, there is somewhat of an attitude that if it ain't broke, don't fix it. This may sound lazy, but there is actually good data to show that messing with things too much CAUSES more problems than it prevents. That being said, there are annual inspections which are mandatory, and depending on how particular your local mechanic is, a plane could find itself in the condition as seen in this video. There are some modern methods involving engine monitors and oil analysis done at time of oil change that can prevent the issues shown. Another cost to worry about for sure, but small when you are talking about the safety of you and your family.
Snob
@faa inspector- who lets their engine get that bad. think they should be working on that?
Utter nonsense. There are replacement requirements based on hours of service for some equipment, as well as mandatory maintenance requirements in every planes POH. Every plane owner I've ever known have been uber anal about the condition of their planes. @@jsteiger2228
I bet It would not surprise anyone if all of them present had a hand at various times in the routine maintenance of that POS..
It’s nice to see “the 3 stooges” got back to making comedy short movies. I thought they quit back in the 1940s.
the best comment
Glad you liked it
dang... someone has actually been flying this thing?
Yep
As a aspiring A & P mechanic I'm wondering if both of you have your powerplant license???
Yes we both do and the Airframe portion as well as the Inspection Authorization as well. FYI
,was this a part that failed or was this because something done wrong ?
It is why the cylinder last most compression, broke while running.
I didn't realise that bits of scrap like this aircraft where allowed to fly over our heads. It looks very aged and corroded, the aluminium bulkhead (if thats what u call it) is very oxidised. Are there cracks around the braces? I thought the aviation industry had much higher standards than this pile of junk. Shame on you. I'm a auto mechanic and I would have slackened the tappets right off to release tension in that rocker pin you were malling up with a steel pin and claw hammer. You bring to mind memories of when we were kids messing with an old motorbike
Thanks for watching.
will VTEC technology fits intothe avaition piston world?
Doubtful it ever will, limp home is not a good mode at rotation.
Why would you need a VTEC when airplane engine operates at a very small range of power setting. VTEC is for automobile that operates from idle to WOT and back time after time. If the automobile operates at 75% - 100%, then VTEC is a waste of mechanical complexity.
No
ok
Claw hammer? Proper tools for the job.
Yes
All of contents under that cowl seems to be very corroded...
Yes
The guys look like a fun bunch to work with.
It looks like it was sitting in a field for 10 years before they decided to get it running.
We are
Fascinating video... Yikes!! would never allow my '80's Airhead BMW to be roadworthy in this condition... even much less airworthy...
OK
Lots of rust in places. Wonder if it's home airport was near a body of salt water for some time in it's life. Looks expensive to bring all that stuff back to where it should be.
Just too much idle time, combustion acids in oil rust parts in sitting
except for cylinder ive seen worse that fly regularly
Yep