Boat engine goes out of control on first test run
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- เผยแพร่เมื่อ 7 พ.ค. 2023
- **UPDATE AND CLARIFICATIONS IN DESCRIPTION BELOW**
We're running a replacement engine (a 1975 SABB diesel) for the first time during a rebuild. Things go badly, we're forced to replace several parts, and investigate the cause. We cannot proceed with the refit of Nibiru unless this engine runs properly! Subscribe to follow our progress on this journey!
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Update and clarifications:
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Hey all, so we didn't think this would blow up like it did, but here we are. Really appreciate you all coming to watch our blunder, it has been a lot of fun. We wanted to take the time to elaborate / respond to sentiments we've been seeing more than once:
"Don't quench the copper! It hardens!"
The old guy has been annealing, quenching, working metal professionally for over 30 years, and as a hobbyist for nearly another 30. We know all about it, this is very far from the first time he has annealed metals. Annealed copper can be cooled in water just fine, it was still soft, and the seal is currently perfect. The engine has been run repeatedly over the past couple months without a singular sign of leakage. The quench in the footage is not a necessary step to the process, but in that moment we simply wanted to get on with it, so we cooled it quickly. We may not be paragons of engine safety 🤣 but he does know his metals.
"You say that, but the head gasket is clearly still leaking, it's right there in the video!"
Nope, the head gasket is sealed perfectly. The footage is catching tiny puffs of exhaust coming from the fuse socket just above the head gasket (it was a little loose). Also there is steam from the water cooling intake boiling over between cuts. The steam is being fanned around by our salvaged air cooling flywheel. Sorry we didn't clear that up.
"You call that a rebuild? The thing is filthy!"
So the video could have been worded A LOT better, that's our bad. What you're seeing leading up to the big event is a rebuild at 90%, and us making some dubious assumptions by running her. The engine at present is clean, painted, beautiful, and like we've said: has been running in the shop once or twice a week just for fun :) There will be more footage coming before we install her in the sailboat.
"... Okay well, what did you do up until this point?"
and "where did this engine come from? What state was it in?"
Sadly we started filming at the end of the rebuild, we would have loved to show the process leading up to the test runs.
This engine was a basket case we were given through friend, she came out of a derelict sailboat, the make and size we don't know. We are actually not the first to attempt rebuilding this engine, as it passed through several hands that gave up on it, ultimately.
After it arrived in our shop the rebuild process (before this video) involved:
1) Assessing the work done by previous owners (was chaotic to say the least).
2) Reseating the head valves.
3) Replacing the transmission.
4) Pulling the piston, cleaning up the parts.
5) Installing a new flywheel. (Harvested from an air cooled engine we had lying around.)
6) Cleaning the ancient tar-like oil out of every little nook.
7) And last but not least: Repairing a giant crack in the block.
"What was the cause?"
The cause was a malfunctioning governor, with an incorrectly assembled fuel injector compounding the issue. We have since determined that the fuel injector documentation was in error. We attempted to corroborate the information online, but we were unable to clarify the situation as our time scouring the internet produced incorrect information as well. The fuel injector was providing at least 2x the necessary fuel. In the strictest sense, this wasn't a diesel runaway as it wasn't being provided an unintended fuel source. But the supply of fuel was beyond out of control.
Thanks for checking our video out guys! We hope that clears some stuff up. It really is a shame the filming process didn't start sooner, but we felt like we wanted to scrape something together and get it up just to share in our learning process. This video is as much a lesson of what not to do as anything.
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This is video 2 in Nibiru's Refit project, playlist here: • Nibiru Sailboat Refit ...
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Corrections:
00:08 - This was incorrect. At the time of the this recording the engine was not done being rebuilt. This was the result of a miscommunication between editor and shop, sorry about the confusion. We're going to do a better job in the future. See the description for more.
01:14 - Since uploading we determined this was not a diesel runaway as the engine was not being provided an unintended fuel source. The the problem was with the governor. Additionally, the fuel injector was also assembled incorrectly following incorrect original manufacturer instructions. As a result we estimate the injector was providing at least 2x the necessary fuel.
#boatengine #sailboatrefit - แนวปฏิบัติและการใช้ชีวิต
Hey guys, after some careful consideration we decided to reupload this video. We weren’t satisfied with the render quality, could have explained the situation better, and made several small errors throughout. So despite all of the wonderful comments, and attention the video was getting, we felt it would be best to put up a more polished effort for the long term.
We’re really quite sorry about this, and appreciate all the feedback we received. Thanks!
Thank you
It's all good
No it's not
I had a Sabb 8HP in a boat many years ago. It was raw water cooled so waterways were bunged up with rust. Replaced the exhaust manifold with new. Cylinder head was cracked between the valve seats. Had it welded with gas, reground the valve seats and it worked beautifully for a few years. Just like a sewing machine on tickover!! Eventually crack reopened and had to squirt a lot of oil into it with the special Sabb bottle to get it going.
Woah Nellie!! 😂
As a pro mechanic, I can say with great certainty that it took balls of steel to stay there with a cool head, act accordingly and wait until it actually stops. Well done, gentlemen.
Engine was slow and stumbled getting out the gate then ran away down the stretch. Yea shout out for calm heads.
I don't think it was his first rodeo.
25yrs as a marine diesel and machinist, didnt make pro , however rather sitting around to watch old junk break its cheaper to use the compression release
As a pro mechanic you should realise how staying there could have resulted in shrapnel to the shins
Absolutely. But they didn't. They kept their cool instead of running away. They did the right thing.
Mid 80's I had an older type of SABB single cylinder diesel engine in my sailboat. She never failed me, easy to maintain and very reliable. Good to see this engine again after all these years.
Why does a sail boat need an engine?
@@mrwhips3623 Well, wind isn't always on your side. Also an engine makes getting the boat back in to the berth a lot easier.
If there is no wind.
@@mrwhips3623 When there is no wind
@@mrwhips3623 for when the wind stops
Best way for safety is to pre-plan a way to plug the engine air intake--just like the old Detroits
Even the old Detroits could run completely plugged ....
My Navy Father and his mates had to feed one multiple bunk mattresses to keep a runaway from sinking a PT boat after the squelch plate failed to do it's job ! Apparently it was running on it's own lube oil .
you cant do that on a Sabb so easely. You cant reach the air intake, Its sucking air throug the sump..
To @. May have been scavenging it’s own sump oil?
That's what he was trying to do during the event but was unsuccessful due to leaking head gasket allowing air by during intake, like a reed valve on a two stroke. That was the main cause of the runaway. The mechanical diesel has a very simple principle, but the critical controls are oxygen and fuel! Diesel can go into runaway at propane or natural gas leak due to no user control of fuel, and go into the same by the operator's loss of control of the air - much rarer! This is an excellent lesson for that! Well done!!!
The crank seal and governor plate gasket also contributed, evidently? Or perhaps were blown by the excessive pressure during the runaway.
That spring-loaded snap down plate on the Jimmys works pretty well. I had a D343 Cat that ran away once upon a time. Hot time and mighty noisy in the engine room that night.
This makes me think of my little brother, he was about 6 years old and he was on the tractor with one of out workers. The worker stopped at a gate and he got off and opened the gate but as he walked back my little brother had by magic put the tractor into gear and the throttle next to the steering column was pushed up to about idle, so when the tractor went into gear it started running forward. I will never forget the excitement in his face as he yelled to me, "look at me, look at me" And for a second I thought but there is something wrong with this picture, a 6 year old in charge of a 5 ton tractor that is moving forward and will only stop if it runs into something VERY solid. By now the farm worker was running like hell to catch up with the tractor so he can stop this monstrosity that is destroying everything in its way, and to make matters worse is that every single time the farmworker fell flat on his face my little brother was gasping for air as he laughed. So there the tractor went with this guy chasing after it, just like a Laurel & Hardy movie. By now, there were pigs running around and all of the milking cows were standing by the fence josteling for the best viewing spot (Cows are very inquisitive by nature) and the old barn (almost 120 years old) were next to get some of the demolition work done to it. But to every body's amazement he leaned forward and pulled the gear lever back into nuetral and the steel giant gave a huff and a puff as it came to a stop right onto of an anthill. Now that is what I see when that engine turned from a hit and miss engine to a roaring beast, best thing to do is grab your lunch box and get the hell out of there, she will stop as soon as the juice runs out but don't forget to anchor that baby to a huge metal spike in the ground before she gets to the Pigs or even worse, the Cows who will think it is Christmas when they see this engine jumping around and dry every single drop of milk out of there udders at least until Friday. LOL!, Have a nice day!
Never a dull moment eh ?
Now that's a funny childhood story.
You are right about cows. I was at a motorcycle rally in the UK when kids found some WW2 unexploded morters in the riverbank. Rather than try move 4,000 drunk bikers the bomb squad blew them up without warning causing cows in the next field to stampede over twards the bang to see what was happening!
@@Darth_Chicken hahahahahahahahahaha!! When and where was that?!!!
This happened to my brother when he was small except it was a racing 4 wheeler.... my dad caught him about halfway out the large yard. He had leaned forward and grabbed the steering bar and doing so nudged the throttle forward.
My friend's boat has a sabb its ability to remove loose teeth with the vibration is legendary. Not sure of its age but never fails to start and sips fuel.
I thought it sounded very diesel ee if you know what I mean very harsh knock even for a diesel
I had one in my sailboat, used around .65 liter/hour of diesel while doing 4.5 knots with a three blade prop. Never failed to start but you had to trim the throttle carefully to prevent the thing from shaking the boat apart.
Great that you do not only show the runaway but also explain what needs repair.
well ruaway is good specially if your in sea, boatr will run faster for free, no one neds to accelerate and with time will come back to its normal way of working
@@anteneupitra until your crankcase shatters and you get shrapnel in the neck
Reminds me of a story a friend told me about his older brother that had joined the Navy. Shortly after rebuilding a diesel engine, he was showing some superiors it running and the same runaway happened. Cutting the fuel wasn't working so he ripped off his t-shirt and jammed that into the air intake to stop it. Their father was the head machinist at a local boatyard. Loved heading over to that shop which was right down the street from where I grew up.
I watched a video some years ago where the fellow did that on his tractor and it disappeared! Hmm? I think they eventually stopped it by literally strangling the flexible air supply hose.
How does cutting off the fuel supply not stop it. It runs on air alone?
@@ChrisPBacon-ok7ir Diesels are throttled by fuel consumption, and if there's a gasket leak near an oil feed and outside air the engine could still operate, because it runs by compression and heat not by spark, diesel is less volatile than gasoline
Definitely not my best explanation, but I feel like I was close
@@ChrisPBacon-ok7ir It runs on lubricant oil if there is an oil leak.
@@HotelPapa100 Yep basically they can run on their own engine lubrication oil, not sue if that was the case here though.
I had a Sabb 10 in a boat in 1973. CHECK the gearbox oil. The air intake travels down the starting handle across the gearbox, then up the push rod tube. Gear oil thrown into the air stream will cause the engine to run away. By the way, if it gets to 1800 RPM. Stand well back; the machine's next move is to part company with the flywheel; You will never find it. It will make its way into the next county😁
Ahh...what a beauty. :)
It's nearly indestructible and doesn't even have an oil pump. It has small shovels that splash the oil over everything.
Btw.. for those who wonder... It's a SABB, not a SAAB. SABB was a Norwegian manufacturer of small marine diesel engines.
In 2006 Sabb Motor AS was bought by Frydenbø Industri and renamed Frydenbø Sabb Motor AS. They also had a little encounter with Mitsubishi at a point in time.
A lovely boat engine. We had a SABB in our boat but it was changed for a Yanmar diesel. It's a little more "complicated" than a SABB but equally tough and maintenance-friendly. We've been out sailing today...sunshine and 21 C. I love the summer is on its way. 😎🛥
beautiful work and videography. I love how you captured the character of this engine with the closeups of the colorful layers of chipped paint combined with an excellent choice in background music.
It sounds a lot happier the second time.
I was always told to have a plan in place when starting a diesel for the first time. Most of my engines (small stationary & marine engines) are petrol or 2-stroke, so it’s not a problem, but I’ve always been wary with the diesels. A small CO2 fire extinguisher is a good way to stop them, remove the oxygen from the equation, or be ready to crack the injector feed union.
You need a long co2 injection in this engine to kill it. That flywheel can easily restart it after your extinguisher is empty.
Cut the fuel!
@ChrisPBacon-ok7ir won't work when it's burning the internal oil. That's the issue with a runaway diesel. Especially the old ones. They run on anything oily. Only way to stop it is either mechanical, but stopping a diesel mechanical at high rpm is almost impossible. Only way to stop it to cut it's oxygen thus airsupply.
@@sebrassino , Ah, the internal oil. I can see that now. At least they got it to stop with no serious damage!
You have to cut the air off from the engine. A rag works great
Somnething about repairing or restoring a machine is super calming. I can´t put my finger on it, but everytime I get to repair something, I get really relaxed. And watching someone do so has almost the same effect. :)
like i said before love how you 2 just stand there and keep cool like this is nothing, but keep up the hard work cant wait to see the boat on the water
Anyone who has had a diesel start running away knows how dangerous they can be. Heavy parts spinning way above there normal speed is a recipe for disaster. Had an excavator that started to run and only stuffing a coat in the intake stopped it. Not easy to get to, and lots of noise of things getting ready to go wrong.
Nice teardown and showing what needed to be fixed.
I know some subaru owners who wish it was that easy to change a head gasket :)
I've seen quite a few people try to stop a diesel runaway by cutting the air intake and it's remarkably difficult, partly because a proepr runaway involves it taking fuel and air from places that it's not supposed get them from. A decompression valve is probably the best option because that's the only thing that you actually have full control over.
A friend had a turbo diesel car which suddenly lost oil pressure. The turbo bearings were leaking enough oil to keeping it running when switched off he had to put it in top gear and stall it.
Got what is probably the last one supplied from the factory. The then UK agent tried shortly after to order another and was told they no longer made them. That was 2001. It is still in the boat, used for commercial fishing. Good quality, simplicity, you cannot better!
In Germany we're using a "Notfall-17er" for such issues. Simply a wrench which fits the nut on the high pressure fuel line to the injector to loosen it in case there is a fuel pump driven runaway. On most engines the correct size for that thing is metric 17. If the fuel line is loose, the fuel will leak out and not enter the injector, stopping the engine.
this is not realy a perfect solution because it can also be a faulty vlave shaft or other sealings like on Turbo engines. withch lets the engine run on its own lub oil.
What a great sound that thing makes when it is running good. Not sure why YT suggested this channel, but I am glad they did. I appreciate the quiet touch in as much as you don't talk during the video. Personally I thought the music was okay, but you truly, truly do not need to add music to keep me watching. And depending on the type of music and whether I like it or find it annoying, I might quickly click away from the content.
Your content is very good in my opinion with only the natural sounds of whatever you are doing. The editing was not even noticed, so I guess it was done right. Personally I'd watch most anything you could throw at me where casting, machining and fabricating metals of any kind is concerned. Thanks for sharing this content.
Thanks for the insights and feedback! Appreciate you stopping by! We'll take the advice to heart, the music balance is something we've been thinking about a lot, and while we enjoy doing it ourselves we've really tried to tone it down in more recent uploads. Cheers!
Geez, plenty of Monday Morning Quarterbacks out there. I saw two older guys kicking around an old motor to get it running. I would wager these same "old guys" were from an era where shit got done, with maybe a hiccup or so, but it got done. And didnt require a series of "team meetings" to discuss how, who, when, what, why before even a spanner was turned. I loved it, you reacted accordingly and no one got killed. Thats a good day in my opinion. Keep rocking you two, life is an adventure and I would like to think you had a beer and a laugh together afterwards resolving "how did shit happen" . 10/10 :)
whew... that was a scary runaway, props to you both being able to stay there with it... It's good to see people working over these old engines.
Back in the 90s some family friends had some type of similar engine but it ran away and they ran off knowing there would be an imminent implosion 😅 ran for 4 mins then the bottom end blew up, ka boom 🎉 , well , time for a new motor 😂
Friend had a turbodiesel where the turbocharger oil seal started leaking engine oil into the intake, and it promptly ran away, burning its own oil. There wasn't a quick way to block the intake, and the flywheel's potential-disintegration-plane intersected with the driver's cab, so the driver did the smart thing and GTFO.
It ran well above redline for several minutes, filling the building with smoke until it burned enough oil for the oil pump to suck air. Evidently there was enough oil left in the bearings and journals that the thing somehow avoided seizing up as it revved down from the stratosphere. By this time everyone in the area had turned out to watch, and once the danger had passed, they set about opening all the windows to air the place out.
They fixed the oil seal issue, replumbed the intake so it was easy to choke it out in case it happened again, and started it back up. Reportedly the engine was completely unbothered by the ordeal and was still running without complaint years later when my friend left the company.
As a result of hearing this story, I've never let myself get near a diesel engine without a plan to block the intake!
has to be the quitest diesel runaway I ever heard of.
once things quieted down there was not a word out of both of you... Impressive!
A real brown trouser moment if ever i saw one. It's that feeling of pure panic, whilst trying to keep a cool head and sort the problem as quickly as possible. Nicely done.
Nobody Was Talking Anythings Until The Machine Stop... Really Impressived!
what an incredibly cool old motor...great job in getting her back in action
It's always nice to see how this old machines come to life again.
Nearly 50 years old and sturdy enough to withstand another 50 or more.
These are real treasures in the fast turning time and a world of throw away mentality...
Happy fixing :-)
Omg the force of that flywheel popping off😂
Regarding annealing copper, the water bucket is not needed or there is no rush to dunk it. When you get coper to right temperature, it already has annealed and the rate of temperature change doesn't affect the end result. Sure it is nice to dunk it in water to get it cool for touching fast, but not needed for the process itself.
I was taught you get the copper red hot then quench it in water, always worked for me on sump plug washers and such
@@austinshackles549 the quench in water removes the oxide coating from the surfaces. I used to make copper head gaskets for my old Brit motorcycles.
Correct, we’re quenching it in this case for expediency. The head gasket has served us perfectly ever since.
really cool and simple design engine, cant wait to see maybe in the future this thing on a boat and in the water! great work brother
Excellent job guys. Well done. What a torquey little engine 👍
I had a sabb like this on my boat, I loved it at low revs just pushing me along at about 1 knt. Thanks for posting.
WHAT A NICE VIDEO! i smiled all the way through and it put me back in tune with why I love being a gear head.
reminds me of a story the father of a friend of mine told me , he had an old diesel engine "rebuild" (cleaned up and painted it up nicely) and mounted it inside an old vw van to test it and store it , the first time he started it it responded about the same way , he didnt had the possibillity to reach around the engine to cut the fuel and was standing inside the van when it happened , he needed to break one of the side windows and crawl out that way
later it turned out the rack was stuck wide open from the paining he done on it , after cleaning and polishing that the engine ran as it should (he did put a lot less fuel in it the second time though)
I had to watch it twice because the first time it passed 6000 RPM I hid under my desk. Who knew a one lung diesel could double as a router?
Good job and video ❤
Some very nice work done here... I like the head gasket annealing trick ! I really love these engines in the right application.
An engine run away can get pretty scary. I had it happen on another boat engine, A 1960's super charged Detroit diesel 4.71. I too was not prepared and couldn't shut down the air intake. I stopped the runaway by shutting off the fuel lines, before the sump oil ignited. I was lucky. The run away was caused by a small piece of debris getting past the fuel filters and locking the injector rack wide open. Afterwards i had to lay down on the floor of the boat for about a half hour. I thought I was having a heart attack, but it was just shear terror.
Good video!
I had a similar experience starting a mercedes benz inboard four cylinder from the 60s. It revved to max as soon as it fired. I found that the injector pump's regulator axle was internally spring loaded to stay on max flow and had to be held toward idle. I never figured out any more about this before the boat was sold. Engine surived fine, by the way.
Diesel runaways can be catastrophic, great that you managed to stop it. Thanks for uploading, nice vid. :)
I LOVE this video. Old engineering in the hands of people who know what they are doing. I hope the skills are paste on to a next generation.
Excellent work my friends, so glad you caught that runaway..! 👍
Amazing job guys! So glad it didn't come apart during the run away.
Freaking insane Courage. I would've evacuated the room if i was there with you guys at the moment the engine began to runaway.
Y'all really know what you're doin
Love it. Can't wait to see more. Have fun & stay safe cheers Kev.
The lathe you have is a Soviet one. 16K20 model with the Polish chuck on. I used to work on that back in the day at Kharkiv tractor plant in Ukraine. I liked its friction clutch. This lathe is the most comfortable to work on although it's not as durable as its predecessor if given a hard time like taking off 45 steel 15mm per pass.
You guys do good work! Thumbs up!
The last time I saw one of these was in Vietnam when we hired a boat to take us fishing. It was a small traditional sanpan style boat. I almost fell over laughing when the owner grabbed the crank handle and started cranking. I said, "Is this a boat or a model T?" The throttle was controlled with 100lb fishing line run through a hole. He used a simple hand tiller for navigation. The exhaust left much to desired as it was a dry exhaust which was very loud. It was made of a few lengths of pipe that were run out the side and aimed down towards the water. I was impressed with the solid wood design of the vessel. My father was a shipwright who was one of the last in the area who knew how to work with wood. Over the years, I learned a thing or two about construction of wood boats.
We didn't catch much, but we did enjoy the ride. After our hearing returned, we even enjoyed being able to carry on a conversation. 😄
Fantastic engine. Good memories when we had this engine type in my father's motorboat when I was small kid back in the 80s.
I remember those Sabb engines from my younger years when we were operating lifeboats. We had small cotton buds soaked in nitroglycerin to shock start them with during cold weather! Amazing engine!
I had this happen on a very worn out beta marine engine in our workboat within 40m of a large jet fuel tanker! I had to put a block of wood over intake and it took ages to finally shut it down.. the Pilot was on the bridge wing looking down and told me after all he could see was black smoke and after a min or two my head came out as I jumped ashore! Lol
I’ve also had it happen on a old 2.5td Land Rover engine and that was going like a Yamaha R1… I’m sure it must have gone over 10,000 rpm. I stopped that with 4th gear and letting the clutch out. Bloody frightening!
I once had a Hatz/BMW sux cylinder run away on first start up after I had installed it. A brand new engine. Fuel shut off didn't stop it. I was kind of jammed down the side of it without much room. I stuffed my t-shirt in the air intake and it stopped. Very scary. I was imagining a con rod coming through the side of the crankcase...and into me...
This news update was informative and engaging.
Very good video indeed and what lovely old Saab engine 👍
Beautiful love it congratulations! Really admire your work. What a beautiful engine.
That's amazing. I didn't know sailboats had such a small engine. But I'm sure they did their purpose efficiently. 😊
Fun to watch, thanks for sharing
you guys had lots of faith in those two bolts and 6x6 ... 😂
Great work gentlemen!, I hope you will blast and repaint her to her first day look! In my humble, she is worth it 😃
I like your countermeasures to keep it from hopping around 😁
A wonderful piece of history - Best of luck rebuilding. That compression stroke sounds brutal - Injector timing a little early ?
I thought the same but I'm not really familiar with the sound. I do know that temperature and altitude can really change the sound of single diesels.
With a flywheel like that, a runaway can soon get exciting.
This bad bouy of a single banger sabb wants to run like mad, so much potential
Wakening up from it's long sleep with a vengeance
At first I didn't recognise the engine. But when I did I was blown away by how fast it ran. [A lot of swearing] that was insane.
I love this engine. Marstal navigation school has a couple training boats, and one of them running this engine. My favourite by far. Pleasant cadence, lots of torque, and with a little knowledge, rock solid operation. They are probably still running it, and probably will be untill something major breaks.
The other boat had a far more modern, small 4 cylinder diesel. What a hateful thing that was. 😂
You guy'ses reaction reminded me of a DJ Ruby Rhod quote
"What was that? It was BAD! It had no fire, no energy, no nothing! Y'know I got a Show to run here, and it must pop POP POP! So tomorrow from 5 to 7 will you PLEASE act like you have more than a two word vocabulary. It must be green, okay?"
Imagine if this happened on the sea. You would have gone overland like "Wallygator".
great work, great video - well done
Really enjoyed this video! It sounded nice at the end when you had it running under normal governor control.
Reminds me of an old Yanma single i had in a little motorsailor going berserk , Hell never new it could go so fast , The chopping block saved the day
Best engine ever made Norwegian raw water cooled 100 rpm idle .I've rebuilt one or two and worked them commercial fishing for years the most economical and reliable engine ever made for the ocean. looks like you had the side cover off which house's the governor which link's to fuel pump and didn't locate the ball with the socket when you reassembled it very easily done take the head off heat the copper gasket it's going to be fine just went on a bit crooked when you tightened the head bolts down if its a bugger to start squirt a bit of oil around the valves if your copper tube is missing inside the rocker cover keep her going she'll outlast any modern engine. nice to see it running nice job
What a pleasure watching these guys working on the engine.
Thanks for sharing.
I loved you video like 9.5k others thanks for posting Ron B
So satisfying to watch
All our lifeboats had twin cylinder versions of these engines. Excellent pieces of kit.
Nothing unusual there. They did a good job restoring that engine.
Seems like a neat little engine. Never seen one quite like that.
Had a similar situation...Little 2 cyl Petter engine. Hand cranked it and it took off.... took 4 guys. Plunger was installed 180 degrees out..... so no helical spill port...Exciting.
Diesel guys ALWAYS be ready to shut intake air down and not a rag that can get sucked in and bend valves
Always keep an assortment of cork tapered plugs for jugs... They can be picked to match the inlet as close as possible and to provide a good seal once smacked in there... They wont 0 the air flow, but they will reduce it to seepage levels, which will bring the engine down to civilized operation where you can safely shut the fuel off to turn the engine off completely... Never cut the fuel on a runaway, it is very likely to cause heat damage to either the piston, the valves, the head-block fit or the cylinder itself or a combination of whatever of these... It can be the only option, but its the worst option, next to being killed by the runaway engine...
Well done video.
Thanks for sharing your experience with this unique engine. In the video, you mention not having a provision to block airflow into the engine intake. It is a good thing you didn't try to use your hand. I have heard about some pretty bad things that can happen if the airflow is blocked by a body part. Also, I have heard stories about diesel engines that had lub oil leak into the combustion chamber through a bad blower seal or cracked ring and overspeeding on that. Cutting off the fuel flow on a runaway works most of the time, but cutting airflow is the best.
Since runaway states often are getting air from places it's not supposed to, like the leaky head gasket in this motor, the best method sometimes isn't blocking air flow, it's providing decompression.
I had a runaway on a Peugeot 2.0 diesel van engine. Once I got my head around what was happening I was able to stop it by putting it in 2nd gear and feeding in the clutch whilst standing on the brakes and hoping the clutch didn't burn out.
I had a runaway on a Peugeot 2.0 diesel van engine. Once I got my head around what was happening I was able to stop it by putting it in 2nd gear and feeding in the clutch whilst standing on the brakes and hoping the clutch didn't burn out.
I had a runaway on a Peugeot 2.0 diesel van engine. Once I got my head around what was happening I was able to stop it by putting it in 2nd gear and feeding in the clutch whilst standing on the brakes and hoping the clutch didn't burn out.
I had a runaway on a Peugeot 2.0 diesel van engine. Once I got my head around what was happening I was able to stop it by putting it in 2nd gear and feeding in the clutch whilst standing on the brakes and hoping the clutch didn't burn out.
smoothest single piston engine ive seen
Quality super sharp focus video of a cool old engine with some old school mechanical work. Sensor and ECU free. Well done.
That's just fantastic! I'm a little concerned with there being no exhaust manifold how that works out in a boat or does in run only when out in the open air?
Back in the late 60s we had a lister diesel on a cement mixer run away .. turned out the new labourer used the wrong starting crank to start it... in reverse, was an entertaining end to lunch break..
Nice work❗
Beffore starting an engine in unknown codition, you might consider bolting it down with four bolts, fully tightened, onto a solid frame, not just rely on two slack bolts into two loose pieces of timber. And the fastest way to stop a runaway diesel is to block the air intake.
Love these solid gasoil engines, stationary ones used in farm boreholes for raising water. Natural valve float gives some degree of runway protection, brave to slap hand over air intake. With a vehicle the only way I know to force it to stop is wait until clear ahead select 2nd gear and dump the clutch then after roaring down road with screeching tires pull up with the brakes and stall engine.
LOVE IT !
They can run all day on a 20L/5 gal can of fuel as well..
I love how it's always, "the inanimate object just went outta control!" and it's never, "we failed to control the inanimate object".
I used to work for a company in Houston, Texas that sold diesel engine powered generator sets to marine and oil companies. They sent a newly hired, experienced (he claimed), mechanic out to an oil rig in the Gulf of Mexico. He was supposed to do a warranty required maintenance job on two electrical generator sets, that were powered by 16 cylinder Cummings engines powering a 1 megawatt generator. Cummings D399's I think. The company I worked for sold both generator sets to the oil rig company.
The company mechanic had both of the engines shut down, which was the first thing that pissed the oil rig boss off. The mechanic did the maintenance, started one generator set up and it ran away and could not be shut down until then engine threw a rod, which punched through a steel wall and flew between two people standing outside the wall, then engine totaled itself and stopped finally. Oil rig boss was pissed and told the mechanic to get the other generator running as it cost about $1,000,000.00 a day for the rig to be idol. Mechanic started the second generator set. It ran away, threw a rod, and totaled itself too!
Someone, I assume it was the oil rig maintained mechanic, did an inspection of the both diesel engines and found out why they both ran away and could not be stopped. The mechanic sent out to do the warranty maintenance had washed the air filters of the diesels with gasoline and put them back on while still wet!
Great sounding engine
The guy cranking the motor is definitively looking for a dislocated thumb if the motor kicks back!
Seems like a very well made and reliable engine. Good work.
Great job!
Broke it in nicely