"Water injection". Will do wonders when done properly. Then there is this... Had something close once when a VW 1.6 NA IDI I had JUST finished putting together & took it for a test drive. Took it on the road & it accelerated about 2x faster than it really should have...maybe 9 sec to get to 60 plus & 5th gear where normal is about 14sec. Problem was also that the temp gauge climbed just as quick. Culprit was cheap TTY head bolts stretched too soon (supposed to retorque after 500miles....not 2 miles) & too much (entire cooling system simultaneously feeding the motor & boiling over). Fortunately no damage...new MAHLE bolts + gasket & all was good.
Actually, in tractor pulling most pullers have a system that inject water in the intake pipe between the intercooler and the engine. It serves two purposes first it Makes the air more dense and the explosions are more powerful and second it help to cool the engine down, it basicly acts like low Power nitrous Shots. With a setup like that you can make a 70hp diesel engine take Up 60+ pounds of boost whitout any problem and make the engine have 600hp.
I have a fresh rebuilt 6v53 in a Timberjack skidder . The engine had been sitting in a crate for a few years and never installed. I put the machine together, and found a few sticky injectors. I managed to free them all up, except one. I spent hours trying to get it to stop sticking. I had a Detroit specialist stop by. He told me “do not start that engine or it will run away on you and you’ll never stop it. It will blow up. You need to replace every injector.” When he left, my dad said “we’re starting it up. To hell with that guy.” As soon as we hit the key, that fresh build ran right out of control, just like the guy said. However, through all the screaming (humans and the jimmy) we tgrough a piece of plywood over the intake, and we started pulling off fuel lines. We got her stopped, pulled off the valve cover, and all the injectors worked just as they should. We hit the key again, and she purred like a kitten. That was 20 years ago and that old machine is still running strong. My dad saved me $3000 in injectors! Thanks dad! RIP
Right. It makes one really shake their head in disbelief. I'll see for instance, an MCI 7 or a GMC Buffalo for sale " $3500 needs motor, hole in side. Overheated and Bang. RAN FINE." How do you detonate an 8v71 that's only 250hp for a bus application?🤷🏿♂️😂😂😂
Have an 8v71 brought it in because it was puking oil out the exhaust. 3 broken keystone rings and the heads were just wore out. Knew the previous owner and he was kinda rough on it. But the dang thing still sounded good besides the white smoke it poured out. Safe to say these things just don’t wanna die. Safe to say I have a bit of a soft spot for them. Kinda fun to watch em blow up tho lol.
@Bag0HaZe they were literally designed to start from cold, go full throttle and run all day like that. As long as the oil and fuel are there, they'll keep going. I talked to a specialist a while back and the biggest reason Detroits have to be pounded on to perform is because they were performance biased more than economy biased. They overscavenge the cylinders, and just adjusting the port timing and exhaust timing they become more efficient.
@@dtiydrFirstly, twice as many powerstrokes have to use twice as much fuel as fuel for combustion, secondly, they work with Boost levels that do not exceed 20psi, (remembering each Psi adds 7% of torque and horsepower to the engine) quantity that compared to the competition, is only half, in addition we have the Blower (8v71 or 6-71), these Blowers steal 120 hp from the engine, in addition, the Powerstrokes are super short, since the intake holes on the shirt they steal 0.95 inches of effective stroke, in this case, where combustion occurs, if we use the logic behind this calculation to give the real displacement of the 71 Series engines, the 6-71 would have less displacement than a Cummins 5.9! Regarding efficiency, these engines were designed by Kettering and Winton in the 1920s, where the price of Diesel was not of paramount importance
I think it was getting atomized in the blower so it never really hit the cylinders as a solid mass of water, more like thick mist and it just got sucked right through. Betcha if you'd let it run like that and shut it down the cylinders would be clean as a whistle from the steam cleaning.
This reminds me a bit of a project General Electric did back in the 1980s, where they converted one of their V12 FDL locomotive engines to run on finely pulverized coal slurry (think printer toner mixed with water). Their engineers were amazed at how high a percentage of water the fuel could contain and still autoignite.
I'm really impressed with how it just kept taking the water and running. I don't think that's how water cooling is supposed to work. Also, you unintentionally made a perfect Hydro diesel mix.
I'm 74. When I was about 25 I had a job driving a Brockway with an 8V71. I was still a rookie driver and one day way out in the country the linkage to the rack came loose. She went full throttle and I thought it was running away so I pulled the emergency stop. It didn't want to stop but finally did. Sitting in the middle of the highway I got out, raised the hood, figured out the problem, put the linkage back together, reset the emergency stop and fired it back up. I drove another 50 miles to the place where I was getting loaded. Everything seemed fine i Ioaded and headed back up the road. After about 100 miles I realized she was overheating. I was almost at our shop. I was running with three other trucks when I pulled in the shop and the others kept going it made the boss mad. He accused me of being lazy. I told him it was running hot. By that time I had put the emergency stop issue out of my mind and didn't mention it. He said "that truck ain't running hot". I told him the gauge had been pegged just down the road but it had cooled back down some. He sent our parts guy out to check it. Jimmy just laid his hand on the radiator cap and said it's alright. He never actually checked. I was pissed by that point because they didn't believe me. It fired right back up and I headed up the road grossing about 82,000 lbs. 15 miles up the road when I slowed to go through a small town I noticed it was way down on power but danged if I was going to stop and call them. About another hour out she slowed to the point that I had to downshift several gears. I was down to about 30 mph in the middle of nowhere when I got to a country store. I pushed the clutch in and she locked up tight. I coasted in neutral to a stop and called the shop. They had to figure out how to disconnect a loaded aluminum dump trailer and hook it to another tractor and pull my rig back to the shop. When they finished doing a complete in frame rebuild on it they called me to come back to work but they never said a word to me about it. After that they listened to me. All I can figure out is that when I pulled the emergency stop it sucked the coolant out of it and blew it out the stacks because I never saw any signs of leaks or busted hoses, water under it or anything. They are damned tough and it hurt my feelings to watch you kill that one. But it did make a great video!
I've watched a lot of runaway videos now and it's amazing to me that these engines can run for so long, SO much faster-spinning than God ever intended, with no cooling system at all, and somehow they never break, they just eventually seize. And sometimes, after they cool off, they can be run again! That just impresses me.
Damn, no teardown. I wanted to see how clean the water and steam made this one. I already love 2 stroke Detroits, and this just reinforced it. Tough ass old beasts.
you know what also didn't compress water ? the blower in top. the water is going anywhere but into the engine. listen close when he says it puts it into the blower.not turbo charger. blower.
@@Descendancy You can but it doesn't cause a significant decrease in volume... like with a gas, so it is for all intents and purposes in an engine, not compressible. A diesel engine only has a few hundred PSI on each cylinder so ... not enough to significantly compress most liquids. As long as the turbo is pushing enough air... the cylindres should be mostly dry though since the ports are at the bottom of the stroke... water will just blow through the bottom of the cylinder.
Yeah it barely budged and absolutely mashed the cab of that bus. Yikes! I wonder what would have happened if it was going faster (like 75 mph) would it have cut the thing in half or found a hard spot in the frame/axle?
Brilliant footage, amazing how the water injected engine was very happy to keep running with that additional cooling. I was expecting it to hydrolock at high speed and parts flying off. Keep up the great video's. Thanks for making them.
You're crazier than a shithouse rat. If you like this video, that's saying something. LOL that I spotted your comment in the wild. I've been subscribed to your channel for a long time.
Would like to see a tear down on this one to see how spotless the inside is after that steam cleaning. My thoughts were the blower atomizes the water too much to lock it up.
Also with the engine running away at high RPM it actually makes for even less chance of hydrolock, since you have more displacement per second to help distribute the water (8 cylinders x 71 c.i. x 4,000 rpm is a LOT of volume). If it were only turning at 1,000 or 1,500, the water to air ratio going into the cylinders would be much higher.
Its a detroit, its fine, they thrive on abuse. Throw some sleeves in it and flush it out and itll keep going for as long as there's something flammable to put in it
Make the Detroit in the White "run backwards" like all the old timers said they would. I'd pay money to see that. Man, this channel just plain kicks ass! Smart as a whip host with tons of knowledge and great content to boot, Hope to see you sooner rather than later. Be good, have fun.
if ya get it started backwards, only issue i can think of will be oil pump, and well, the blower not blowing, which likely will prevent starting the 4stroke 4cyl kubota in my bobcat will run backwards if im pushing trees over and over do it, if you stall it with a heavy load on the hydraulic pump, the backflow though the pump starts the engine backwards, smokes out the intake, sounds funny, and has no oil pressure
@@jnic2003 i think all ya gotta do to reverse one is flip the cam, oil pump and blower around the other way, that may be a little overly simplified, but not much
You don't know the smiles on the old guys face when I can talk to them about something they know and drop specific terms (and know what they mean) absolutely brighten up my day, and theirs as well. Videos like this are what I love - interesting to watch and informative to see.
I love the videos posted here, but it would have been really interesting to see the EGT's and power output of this thing with the water running through it!
Water probably acts like a coolant when it gets atomized by the blower. Also this is terrifying how fast that thing runs even when you attempt to drown it.
I have an idea on how to get one to throw a rod: Set up a Detroit to run away like so. But bring in another truck/engine and disconnect the turbo from the intake. Connect the compressor outlet of the second engine to the intake / compressor or blower inlet of the runaway engine. This way when you rev up the second engine you should effectively be compounding boost into the runaway motor, which should hopefully match the added fuel and over power the engine enough to throw a leg out of bed.
@@SMVB-cl6oc because the valves are already floating as of now as he stated, more boost will start floating valves earlier, that means lower rpm, the detroit bottom ends are clearly extremely overbuilt, couldnt make enough boost to hurt it, and from the water not locking the motor, that means it has a low compression ratio, probably 16:1.
@@cs-gj3yf how will the boost float the valves earlier? Detroit's only have exhaust valves which are acting in an opposing direction to the boost pressure. Would have assumed their float would only be proportional to the rpm?
@@SMVB-cl6oc when the valves are floating they are open when the piston is all the way down, air will come in and flow straight through the valves, air squeezing through the valve will hold it enough to float them a bit more, probably a loss of 100 rpm.
I was sick over the weekend and pretty much watched almost every video on your channel then thought man he doesn't upload often but here's a other one. Also I'm going to school right now to be a heavy duty diesel mechanic so it's just cool to watch your videos. I also learned from your engine building videos as well as your repair videos so thanks for that.
Absolutely love this UA-camr. I legit rank him right with whistlin. But in the heavy equipment world. All his content is interesting and intriguing. Doesn’t matter if he is fixing something, blowing it up, transplanting. Whatever. It’s amazing.
I know you said you don’t want to take it apart, but it would be cool to see if the internals are clean as a whistle from the garden hose water intake.
When he said we going to shove water into the blower and see what happens I immediately thought, well that's easy, it will hydro lock. I'm amazed at what I saw. I rarely subscribe to anything but this channel is amazing.
Most 4-71 Detroit engines had an automatic cut off butterfly in the intake before the blower. It would flip closed if the engine over reved or ran away. Had to find that one out the hard way when my old boss was complaining about his excavator having no power and wouldn't rev up. I spent about two minutes on it and discovered the cut off was tripped. He thought he blew the poor thing up. We both were glad it was that simple. Him for not having to pay for another engine, and me because I didn't have to replace it.
as a guitar player........ finding a pick IN THE ENGINE!!! is just hilarious to me by FAR the best joke in this whole video . idk how picks just get everywhere.... while also being nowhere to be found . i know i have at least 24 in my room....... but ive searched for 4 hours cant find a single one . maybe i can find one under the air filter in my jeep..........
Ahhh man, the last one, sad, I love these kind of videos!! I bet after being a cloud machine she’s nice and clean inside. Love your videos man, please keep something like this coming in the future. Cheers
Back-in-the-day steam locomotives became obsolete because diesel engines became Superior. But no one invented the Diesel steam hybrid until you over 100 years later! All you need is a condenser accumulator and filter on the exhaust and you can recycle that steam to make water to feed the thing get 60 miles per gallon and 300 horsepower@ 4200 rpm! And near zero emissions! You don't even need a cooling system! Do you want to be partners on this deal?😊
We had a Silver Series 92 that ran away in Diesel Tech Class. We worked hard and had it at 515hp with massaged lowboy injectors on the engine dyno, and it stuck open, full open. A loose bolt. I never seen my Diesel Prof move so fast to cut fuel. It upset the 2nd floor classes so bad the female substitute professor pulled the fire lever and they all ran for the exits. The 3 story brick building was humming. Then the whole food chain showed up. Fire Dept, Medics, Police, The Dean and his talking heads, ect. This was 1988.
I've shown the bus video to prob 100 or more people. Everytime I see it, I replay the tree impact moment a few times. I still can't believe it somehow hit the tree so dead center perfect.
It's midnight here in England, and I should go to bed. But not yet. Edited: I don't regret a moment. She was as happy as Larry with with water injection - they should be designed that way 🙂
Those Detroits are some kind of tough. Letting them just runaway especially with coolant leads to just louder noise, they refuse to die letting them run away. Those 2 strokes were desgned in the 30s so coming up on almost a Hundred years ago! The enginners who designed them were brillant and done without any kind of didgital help.Running them years ago in heavy equipment I honestly didnt appreciate how good a motor they are.
Two things to test out, if you decide to do a runaway again: 1: More water 2: A tank of acetylene and a tank of oxygen blowing into the intake, gotta be better than ether.
This happened to me with an Oshkosh 4x4 airport snowblower in 1988. The drive engine for the SnowGo blower was an 8V71 which ran away at a gas station in Davenport, Iowa. The cable for the emergency flap on the blower broke when I pulled it at the beginning of the runaway. I jumped up on the rear tire and manually flipped the trigger for the emergency flap after maybe 30 seconds of runaway. Restarted a few minutes later without incident and continued to use it that entire day. No problem. Only issue was the oil on the ground under each exhaust stack and the same on the underside of the gas station canopy. Two VERY large oil spots!
It’s not my place to tell you about diesels… I worked with 5120 diesels /air compressors on the oil barges in the Gulf of Mexico for diving work in the 1990s. When those engines did decide to run away, which was rare, but we had to take cover and stay down because they’d break in half and send a piece of the rod across the deck. - real possibility for injury. We took it seriously. Run for cover and duck until it blows. That shrapnel was no joke. That was my experience. Fun video Thx
I had a run away on my 671 in April, I covered the intake but still didn't shut down. I spun of the primary fuel filter and that shut it down. Replaced the injector and away I went, engine still runs.
Me being a “loves all things mechanical” type of guy it’s kinda hard to watch! But, The tires giving out. The tree center punch! The final sounds from the motor are super interesting to witness…. Thanks, nice job 👍
Pretty sure I’m not the only one to say/think this. I’d love to see you rebuild one of them. I’m not a cat guy but the rebuild videos interest me. Being a Detroit guy, I’d love to see you rebuild one. Keep the great stuff coming!!
I would enjoy too but. It doesn't cost much to destroy it but it costs a lot to rebuild 1. If he doesn't have a buyer It can't happen. Unless you buy it!😊
Thanks for reprising ONE OF THE GREATEST UA-cam VIDEOS EVER!!!!! That bus hitting that tree is EPIC! I can't believe that it didn't hydrolock? Maybe try an ether hose if you ever do this again.
It blows my mind that it can still maintain combustion with all that water running in it. And like you said I think the water cooling it off and slowing it down gave it new life which is kind of insane.
Thank you for another good one! Glad you’re doing alright. Ever though about un torquing the rod bolts then just run em up to see what it’d do? Very curious if the vibration would loosen them till failure..
Detroit Diesel actually did a demonstration in the 60's where they ran one without rod caps to show the constant load would hold the rods against the crank.
The army still runs the v71 on it's LCM series watercraft as reliable an engine as you could ever hope. Did a tune up in Alaska on one with a Gerber, match book, and a crescent hammer. Love this engine.
Made my stomach ache when I caught a glimpse of the White Road Boss. I owned and drove one just like that all over the Midwest and east coast in 1988. Miine was a Silver 92. You could develop an attitude driving it, and I'm still traumatized..... 😂
I had a 6.0 ford runaway right after installing, I never cleaned the CAC and it must have been full of half diesel half oil. The comment about running up to it and choking it is only good if you have the balls to run up to a motor doing 4 to 6 or more rpm. All my intake hoses and breather hoses were on. Making it more difficult to choke it quickly. Needless that motor stoped and we were lucky enough to warranty it. I cant explain the noise it makes, listening to it on youtube is no comparison to being there. Everyone in the shop ran except me and my other diesel tech. The roof of the shop had 4 foot of black soot. It was a day you don’t forget
To destroy the last Detroit you should get it to run away and dump gas and whatever else is flammable into it along with its diesel but have water running through it so maybe it’ll grenade. Love you videos by the way.
" What the hell am I gonna do with this one? " 🤣 Keep them coming dude it's always a nice surprise when your new videos pop up! Thanks for the entertainment
"How contaminated is your tap water?"
Well, we ran an 8v71 on it for a solid 10 minutes at full bore and it seemed to like it.
Read this in his voice and it was definitely entertaining🤣
the water was helping the cool the head
This dude just proved you can run a diesel and water mix and it would run.
This shit is crazy
"Water injection".
Will do wonders when done properly.
Then there is this...
Had something close once when a VW 1.6 NA IDI I had JUST finished putting together & took it for a test drive. Took it on the road & it accelerated about 2x faster than it really should have...maybe 9 sec to get to 60 plus & 5th gear where normal is about 14sec. Problem was also that the temp gauge climbed just as quick. Culprit was cheap TTY head bolts stretched too soon (supposed to retorque after 500miles....not 2 miles) & too much (entire cooling system simultaneously feeding the motor & boiling over). Fortunately no damage...new MAHLE bolts + gasket & all was good.
Actually, in tractor pulling most pullers have a system that inject water in the intake pipe between the intercooler and the engine. It serves two purposes first it Makes the air more dense and the explosions are more powerful and second it help to cool the engine down, it basicly acts like low Power nitrous Shots. With a setup like that you can make a 70hp diesel engine take Up 60+ pounds of boost whitout any problem and make the engine have 600hp.
I have a fresh rebuilt 6v53 in a Timberjack skidder . The engine had been sitting in a crate for a few years and never installed. I put the machine together, and found a few sticky injectors. I managed to free them all up, except one. I spent hours trying to get it to stop sticking. I had a Detroit specialist stop by. He told me “do not start that engine or it will run away on you and you’ll never stop it. It will blow up. You need to replace every injector.” When he left, my dad said “we’re starting it up. To hell with that guy.” As soon as we hit the key, that fresh build ran right out of control, just like the guy said. However, through all the screaming (humans and the jimmy) we tgrough a piece of plywood over the intake, and we started pulling off fuel lines. We got her stopped, pulled off the valve cover, and all the injectors worked just as they should. We hit the key again, and she purred like a kitten. That was 20 years ago and that old machine is still running strong. My dad saved me $3000 in injectors! Thanks dad! RIP
You gotta hand it to these old Detroits the amount of abuse they can take and continue running is unreal.
They rarely actually die, you have to make a concerted effort to kill one. I have a 4-71 in my loader it screams non stop lol. It’ll never hurt it
Even after this video its still not all the way dead.
@@bighouseperformance8151 it just wishes it was
Right. It makes one really shake their head in disbelief. I'll see for instance, an MCI 7 or a GMC Buffalo for sale " $3500 needs motor, hole in side. Overheated and Bang. RAN FINE." How do you detonate an 8v71 that's only 250hp for a bus application?🤷🏿♂️😂😂😂
Have an 8v71 brought it in because it was puking oil out the exhaust. 3 broken keystone rings and the heads were just wore out. Knew the previous owner and he was kinda rough on it. But the dang thing still sounded good besides the white smoke it poured out. Safe to say these things just don’t wanna die. Safe to say I have a bit of a soft spot for them. Kinda fun to watch em blow up tho lol.
From engine rebuilds and teardowns to bus burnouts and crashes. This channel never disappoints.
Somewhere a 90 year old Detroit Diesel engineer is being shown this video commenting “yeah, we built them to last”. Great post!
More like rolling over in his grave in disgust.
Yeah! Can't believe she lasted like she did!
@Bag0HaZe they were literally designed to start from cold, go full throttle and run all day like that. As long as the oil and fuel are there, they'll keep going. I talked to a specialist a while back and the biggest reason Detroits have to be pounded on to perform is because they were performance biased more than economy biased. They overscavenge the cylinders, and just adjusting the port timing and exhaust timing they become more efficient.
no they suck
Man its almost a shame to destroy these engines as they seem to be practically unkillable!!
Scrap metal.
@@tdubh666....?
it's a shame. cool engines and they get killed for who knows what
Yea but they are not efficient, gulps fuel, are shitty as hell and are not especially strong.
@@dtiydrFirstly, twice as many powerstrokes have to use twice as much fuel as fuel for combustion, secondly, they work with Boost levels that do not exceed 20psi, (remembering each Psi adds 7% of torque and horsepower to the engine) quantity that compared to the competition, is only half, in addition we have the Blower (8v71 or 6-71), these Blowers steal 120 hp from the engine, in addition, the Powerstrokes are super short, since the intake holes on the shirt they steal 0.95 inches of effective stroke, in this case, where combustion occurs, if we use the logic behind this calculation to give the real displacement of the 71 Series engines, the 6-71 would have less displacement than a Cummins 5.9! Regarding efficiency, these engines were designed by Kettering and Winton in the 1920s, where the price of Diesel was not of paramount importance
I didn’t think diesels were supposed to run on water! This one is doing quite well.
you can throw anything you want in there as long as its liquid
I think it was getting atomized in the blower so it never really hit the cylinders as a solid mass of water, more like thick mist and it just got sucked right through.
Betcha if you'd let it run like that and shut it down the cylinders would be clean as a whistle from the steam cleaning.
@@litz13 it’s like a diesel v8 fog machine
#H2Omotor
@@treystewart544 I said that to myself while watching it aswell, vape machine
This reminds me a bit of a project General Electric did back in the 1980s, where they converted one of their V12 FDL locomotive engines to run on finely pulverized coal slurry (think printer toner mixed with water). Their engineers were amazed at how high a percentage of water the fuel could contain and still autoignite.
I'm really impressed with how it just kept taking the water and running. I don't think that's how water cooling is supposed to work. Also, you unintentionally made a perfect Hydro diesel mix.
HHO as its meant to be.
Rpm to high it will burn it
I'm 74. When I was about 25 I had a job driving a Brockway with an 8V71. I was still a rookie driver and one day way out in the country the linkage to the rack came loose. She went full throttle and I thought it was running away so I pulled the emergency stop. It didn't want to stop but finally did. Sitting in the middle of the highway I got out, raised the hood, figured out the problem, put the linkage back together, reset the emergency stop and fired it back up.
I drove another 50 miles to the place where I was getting loaded. Everything seemed fine i Ioaded and headed back up the road. After about 100 miles I realized she was overheating. I was almost at our shop. I was running with three other trucks when I pulled in the shop and the others kept going it made the boss mad. He accused me of being lazy. I told him it was running hot. By that time I had put the emergency stop issue out of my mind and didn't mention it. He said "that truck ain't running hot". I told him the gauge had been pegged just down the road but it had cooled back down some. He sent our parts guy out to check it. Jimmy just laid his hand on the radiator cap and said it's alright.
He never actually checked.
I was pissed by that point because they didn't believe me. It fired right back up and I headed up the road grossing about 82,000 lbs.
15 miles up the road when I slowed to go through a small town I noticed it was way down on power but danged if I was going to stop and call them. About another hour out she slowed to the point that I had to downshift several gears. I was down to about 30 mph in the middle of nowhere when I got to a country store. I pushed the clutch in and she locked up tight. I coasted in neutral to a stop and called the shop.
They had to figure out how to disconnect a loaded aluminum dump trailer and hook it to another tractor and pull my rig back to the shop. When they finished doing a complete in frame rebuild on it they called me to come back to work but they never said a word to me about it. After that they listened to me.
All I can figure out is that when I pulled the emergency stop it sucked the coolant out of it and blew it out the stacks because I never saw any signs of leaks or busted hoses, water under it or anything.
They are damned tough and it hurt my feelings to watch you kill that one.
But it did make a great video!
This guy rarely uploads, but he makes up for that with these entertaining AF videos.
fax
I bet he has a job.... yeah that's probably it
yes, agree
It’s not that rare anymore. He knows he’s really f$&@in’ good….
Absolutely. This is one of the best channels on the 'tube for sure! Everytime he throws up a vidja I immediately click on that Fugger! 👍👍😁
Still one of the best engines ever designed and built.
I've watched a lot of runaway videos now and it's amazing to me that these engines can run for so long, SO much faster-spinning than God ever intended, with no cooling system at all, and somehow they never break, they just eventually seize. And sometimes, after they cool off, they can be run again! That just impresses me.
Low tech and tough as hell. Today's crap blows up if ya look at it funny.
They don't make em like they used to!
Damn, no teardown. I wanted to see how clean the water and steam made this one. I already love 2 stroke Detroits, and this just reinforced it. Tough ass old beasts.
Physics: You can't compress water
Detroit Diesel engine: Hold my beer
you know what also didn't compress water ? the blower in top. the water is going anywhere but into the engine. listen close when he says it puts it into the blower.not turbo charger. blower.
@@bside8568 I poplp
water can be compressed.
@@Descendancy You can but it doesn't cause a significant decrease in volume... like with a gas, so it is for all intents and purposes in an engine, not compressible. A diesel engine only has a few hundred PSI on each cylinder so ... not enough to significantly compress most liquids. As long as the turbo is pushing enough air... the cylindres should be mostly dry though since the ports are at the bottom of the stroke... water will just blow through the bottom of the cylinder.
@@bside8568 where do you think the blower is pushing the water to? There's also no turbo on that motor it's "naturally aspirated."
That was kind of sad to watch since I used to be a band bus driver and I drove a lot of those Eagle buses. Bet there's a lot of memories in that one.😢
Everyone is talking about how tough that bus was but that damn tree is stout.
GTA physics
Yeah it barely budged and absolutely mashed the cab of that bus. Yikes! I wonder what would have happened if it was going faster (like 75 mph) would it have cut the thing in half or found a hard spot in the frame/axle?
Best part is, when that bus was built, that tree didn't exist. 😊
Best part is, when that bis was built, that tree didn't exist. 😊
Who you callin a weasel, monkey?
Brilliant footage, amazing how the water injected engine was very happy to keep running with that additional cooling. I was expecting it to hydrolock at high speed and parts flying off. Keep up the great video's. Thanks for making them.
You're crazier than a shithouse rat. If you like this video, that's saying something. LOL that I spotted your comment in the wild. I've been subscribed to your channel for a long time.
Would like to see a tear down on this one to see how spotless the inside is after that steam cleaning. My thoughts were the blower atomizes the water too much to lock it up.
Probably help cool it also
@@bigsteve973 Definately help it cooling
It's like.. didn't yall know that's an ol timer trick to clean the engine n exhaust out!? Haha
@@ChevyLivin710 Yeah spraying water mist in the intake
Also with the engine running away at high RPM it actually makes for even less chance of hydrolock, since you have more displacement per second to help distribute the water (8 cylinders x 71 c.i. x 4,000 rpm is a LOT of volume). If it were only turning at 1,000 or 1,500, the water to air ratio going into the cylinders would be much higher.
What a noble engine.It tried its hardest.Sorry to see it end this way.
Its a detroit, its fine, they thrive on abuse. Throw some sleeves in it and flush it out and itll keep going for as long as there's something flammable to put in it
Make the Detroit in the White "run backwards" like all the old timers said they would. I'd pay money to see that. Man, this channel just plain kicks ass! Smart as a whip host with tons of knowledge and great content to boot, Hope to see you sooner rather than later. Be good, have fun.
if ya get it started backwards, only issue i can think of will be oil pump, and well, the blower not blowing, which likely will prevent starting
the 4stroke 4cyl kubota in my bobcat will run backwards if im pushing trees over and over do it, if you stall it with a heavy load on the hydraulic pump, the backflow though the pump starts the engine backwards, smokes out the intake, sounds funny, and has no oil pressure
@@wdixon27 Oh they will go backwards, quite a sight. And not cool if you own it! Cheers.
They can & do run backwards 🤷♂️
@@wdixon27 marine applications will intentionally run one side backwards
@@jnic2003 i think all ya gotta do to reverse one is flip the cam, oil pump and blower around the other way, that may be a little overly simplified, but not much
You don't know the smiles on the old guys face when I can talk to them about something they know and drop specific terms (and know what they mean) absolutely brighten up my day, and theirs as well. Videos like this are what I love - interesting to watch and informative to see.
That was the most savage piston de-carbon job I’ve ever seen.
Just tells you how well they were engineered and built for their day
It's a damn shame he doesn't upload more often. His vids never disappoint
its not enough detroit`s left for him doing that... 😂😂
It’s called quality over quantity
What a dip shit! I have spent my whole life fixing stuff. Not destroying!!!!
I love the videos posted here, but it would have been really interesting to see the EGT's and power output of this thing with the water running through it!
I'll bet those pistons and valves are spotless!! Those old Detroit's are tuff!!
Water probably acts like a coolant when it gets atomized by the blower.
Also this is terrifying how fast that thing runs even when you attempt to drown it.
Glad to see you're back. The destruction videos are hilarious and the tech ones are informative. Keep 'em coming. I'll watch them all
Son do you realize that you just invented the world's first diesel steam hybrid?
I have an idea on how to get one to throw a rod:
Set up a Detroit to run away like so. But bring in another truck/engine and disconnect the turbo from the intake. Connect the compressor outlet of the second engine to the intake / compressor or blower inlet of the runaway engine. This way when you rev up the second engine you should effectively be compounding boost into the runaway motor, which should hopefully match the added fuel and over power the engine enough to throw a leg out of bed.
not how it would work, i wish he would get a turboed engine, take the journal bearings out of the turbo, and make a actual runaway.
@@cs-gj3yf explain how my theory wouldnt work
@@SMVB-cl6oc because the valves are already floating as of now as he stated, more boost will start floating valves earlier, that means lower rpm, the detroit bottom ends are clearly extremely overbuilt, couldnt make enough boost to hurt it, and from the water not locking the motor, that means it has a low compression ratio, probably 16:1.
@@cs-gj3yf how will the boost float the valves earlier? Detroit's only have exhaust valves which are acting in an opposing direction to the boost pressure. Would have assumed their float would only be proportional to the rpm?
@@SMVB-cl6oc when the valves are floating they are open when the piston is all the way down, air will come in and flow straight through the valves, air squeezing through the valve will hold it enough to float them a bit more, probably a loss of 100 rpm.
THAT 2 stroke 8V71 Detroit Diesel engine is tough, real tough
Whole series is destined to be a classic. Tour bus vs tree that part was priceless.
EPIC !!!!!!!
And a perfect center shot in the tree
That tree deserves an honorable mention! It took that hit pretty good👍
Those old 2 stroke Detroit's have got to be the toughest motor ever built!
I'm amazed about how well it performed. It's almost like you were running steam through the engine.
Hell, that was just a drive through a rain shower for that ole’ girl. 😂
I was sick over the weekend and pretty much watched almost every video on your channel then thought man he doesn't upload often but here's a other one. Also I'm going to school right now to be a heavy duty diesel mechanic so it's just cool to watch your videos. I also learned from your engine building videos as well as your repair videos so thanks for that.
In the late 70's, that blower would have been gold. (I had a 4-53 on a Buick 322 Nailhead in a Model A Tudor.)
Absolutely love this UA-camr. I legit rank him right with whistlin. But in the heavy equipment world. All his content is interesting and intriguing. Doesn’t matter if he is fixing something, blowing it up, transplanting. Whatever. It’s amazing.
He's better than wd in my opinion because his videos aren't just unnecessary destruction and wrecking good stuff.
Whistling bunghole is an asshole. I like this guy
@@countryboy20781 jealous much?
That bus could have housed twenty crackheads in Los Angeles...
I can't believe how good it ran with the water lol
water didn't make it past the blower. pretty certain the only thing pass was a little water vapor
@@bside8568 Yes it did make it past the blower. The exhaust got extremely steam-y.
If it didn't go through the blower then where did it go?
The Detroit said, "a stroker gotta keep strokin'. Ya try to drown me, but I'm gonna keep strokin'. I like water!"
I know you said you don’t want to take it apart, but it would be cool to see if the internals are clean as a whistle from the garden hose water intake.
You got to admire the quality of those engines they are incredibly tough
When he said we going to shove water into the blower and see what happens I immediately thought, well that's easy, it will hydro lock. I'm amazed at what I saw. I rarely subscribe to anything but this channel is amazing.
Such a good engine! It outlasted all other engines in our trucks.
I mean thats one way to make a fog machine. Amazing vid as always.
I was waiting for 3D In Your Face to come walking out from the haze and try and drown out the Detroit with electric guitar. Priceless.
Most 4-71 Detroit engines had an automatic cut off butterfly in the intake before the blower. It would flip closed if the engine over reved or ran away. Had to find that one out the hard way when my old boss was complaining about his excavator having no power and wouldn't rev up. I spent about two minutes on it and discovered the cut off was tripped. He thought he blew the poor thing up. We both were glad it was that simple. Him for not having to pay for another engine, and me because I didn't have to replace it.
The Bus Grease Monkey must cry every time you do this.
And scream "How Dare You" just like Greta.
They sit down and eat.
@@daleolson3506 😂
@@daleolson3506 They big o' boys, aren't they !!!!!
That's a hell of a engine.
If I ever need a heart transplant, I want a Detroit Diesel.
I came for the runaways I'll leave for the runaways to
Cat owner: Hell boy I got a marine cam inner!
Detroit owner: Hold my damn beer!
as a guitar player........ finding a pick IN THE ENGINE!!! is just hilarious to me
by FAR the best joke in this whole video
.
idk how picks just get everywhere.... while also being nowhere to be found
.
i know i have at least 24 in my room....... but ive searched for 4 hours
cant find a single one
.
maybe i can find one under the air filter in my jeep..........
Good God man. That must be one of the best videos I've seen on UA-cam this year.
you know you're screwed when your detroit diesel sounds like a vtec💀
Ahhh man, the last one, sad, I love these kind of videos!! I bet after being a cloud machine she’s nice and clean inside. Love your videos man, please keep something like this coming in the future. Cheers
I can hear Wayne crying now. He’s fighting to save em. Your burning them down. Great video
The tree hit will never get old
These videos are so ruthless, every time there's a new video I get surprised by the carnage, that driver less bus running into tree was hilarious
Always a treat when you post. Thanks!
that was interesting, i was waiting for something to blow up, tuff engine
Goddamn that thing held together longer than my 2nd marriage
😂😂funny man
They don't make engines like they use to... that thing is a beast!
One of the best runaways yet in my book. it was awesome 👍
Back-in-the-day steam locomotives became obsolete because diesel engines became Superior. But no one invented the Diesel steam hybrid until you over 100 years later! All you need is a condenser accumulator and filter on the exhaust and you can recycle that steam to make water to feed the thing get 60 miles per gallon and 300 horsepower@ 4200 rpm! And near zero emissions!
You don't even need a cooling system! Do you want to be partners on this deal?😊
hey you're giving it a "deep carbon cleaning" that's all 😂😂🤣🤣😂😂💪💪
And this kids is where clouds come from😂😂😂
We had a Silver Series 92 that ran away in Diesel Tech Class. We worked hard and had it at 515hp with massaged lowboy injectors on the engine dyno, and it stuck open, full open. A loose bolt. I never seen my Diesel Prof move so fast to cut fuel. It upset the 2nd floor classes so bad the female substitute professor pulled the fire lever and they all ran for the exits. The 3 story brick building was humming. Then the whole food chain showed up. Fire Dept, Medics, Police, The Dean and his talking heads, ect. This was 1988.
I've shown the bus video to prob 100 or more people. Everytime I see it, I replay the tree impact moment a few times. I still can't believe it somehow hit the tree so dead center perfect.
These seam like good engines but you seam to hate them lol
It's midnight here in England, and I should go to bed.
But not yet.
Edited: I don't regret a moment.
She was as happy as Larry with with water injection - they should be designed that way 🙂
00:20GMT Well worth staying up for👍🏻
@@R.Sole88109 Makes you proud to be British when he hid behind the JCB - and nothing happened 🙂
@@twentyrothmans7308
I'll bet he isn't the first bloke to hide behind a JCB while doing dodgy shit😂
Those Detroits are some kind of tough. Letting them just runaway especially with coolant leads to just louder noise, they refuse to die letting them run away. Those 2 strokes were desgned in the 30s so coming up on almost a Hundred years ago! The enginners who designed them were brillant and done without any kind of didgital help.Running them years ago in heavy equipment I honestly didnt appreciate how good a motor they are.
Two things to test out, if you decide to do a runaway again:
1: More water
2: A tank of acetylene and a tank of oxygen blowing into the intake, gotta be better than ether.
This happened to me with an Oshkosh 4x4 airport snowblower in 1988. The drive engine for the SnowGo blower was an 8V71 which ran away at a gas station in Davenport, Iowa. The cable for the emergency flap on the blower broke when I pulled it at the beginning of the runaway.
I jumped up on the rear tire and manually flipped the trigger for the emergency flap after maybe 30 seconds of runaway.
Restarted a few minutes later without incident and continued to use it that entire day. No problem. Only issue was the oil on the ground under each exhaust stack and the same on the underside of the gas station canopy. Two VERY large oil spots!
Best content on UA-cam - Always worth the wait! Nowhere else is anyone simply asking themselves the question: "Why the hell not?".
Watching it hit the tree was very soothing
the air compressor sure was doing all it could to get that water out of the intake
It’s not my place to tell you about diesels… I worked with 5120 diesels /air compressors on the oil barges in the Gulf of Mexico for diving work in the 1990s. When those engines did decide to run away, which was rare, but we had to take cover and stay down because they’d break in half and send a piece of the rod across the deck. - real possibility for injury. We took it seriously. Run for cover and duck until it blows. That shrapnel was no joke. That was my experience. Fun video Thx
I had a run away on my 671 in April, I covered the intake but still didn't shut down. I spun of the primary fuel filter and that shut it down. Replaced the injector and away I went, engine still runs.
Me being a “loves all things mechanical”
type of guy it’s kinda hard to watch! But,
The tires giving out.
The tree center punch!
The final sounds from the motor are super interesting to witness….
Thanks, nice job 👍
Pretty sure I’m not the only one to say/think this. I’d love to see you rebuild one of them. I’m not a cat guy but the rebuild videos interest me. Being a Detroit guy, I’d love to see you rebuild one.
Keep the great stuff coming!!
I would too! I find it a bit odd how he only destroys detroit two strokes.
I would enjoy too but. It doesn't cost much to destroy it but it costs a lot to rebuild 1. If he doesn't have a buyer It can't happen. Unless you buy it!😊
Thanks for reprising ONE OF THE GREATEST UA-cam VIDEOS EVER!!!!! That bus hitting that tree is EPIC!
I can't believe that it didn't hydrolock? Maybe try an ether hose if you ever do this again.
This channel is a diamond in the ruff great video!
It blows my mind that it can still maintain combustion with all that water running in it. And like you said I think the water cooling it off and slowing it down gave it new life which is kind of insane.
Thank you for another good one! Glad you’re doing alright. Ever though about un torquing the rod bolts then just run em up to see what it’d do? Very curious if the vibration would loosen them till failure..
Detroit Diesel actually did a demonstration in the 60's where they ran one without rod caps to show the constant load would hold the rods against the crank.
The army still runs the v71 on it's LCM series watercraft as reliable an engine as you could ever hope. Did a tune up in Alaska on one with a Gerber, match book, and a crescent hammer. Love this engine.
Sucks that you aren’t doing anymore diesel runaways, but thanks for bothering to do any diesel runaways at all 👍
Worlds highest output humidifier for sure
Damn son, I was getting worried we would never see another video.
Made my stomach ache when I caught a glimpse of the White Road Boss. I owned and drove one just like that all over the Midwest and east coast in 1988. Miine was a Silver 92. You could develop an attitude driving it, and I'm still traumatized..... 😂
If you want to see some carnage, drop one of them while its running at full fuel. Might be fairly entertaining too
It doesn't matter how many times I watch runaways...It is always entertaining.
"Ran great when parked. Slight blow-by"
I had a 6.0 ford runaway right after installing, I never cleaned the CAC and it must have been full of half diesel half oil. The comment about running up to it and choking it is only good if you have the balls to run up to a motor doing 4 to 6 or more rpm. All my intake hoses and breather hoses were on. Making it more difficult to choke it quickly. Needless that motor stoped and we were lucky enough to warranty it. I cant explain the noise it makes, listening to it on youtube is no comparison to being there. Everyone in the shop ran except me and my other diesel tech. The roof of the shop had 4 foot of black soot. It was a day you don’t forget
To destroy the last Detroit you should get it to run away and dump gas and whatever else is flammable into it along with its diesel but have water running through it so maybe it’ll grenade. Love you videos by the way.
One of the coolest videos I've ever seen. Thank you
So you basically turned it into a water pump 😂
Bus burnouts were badass. Bus bogging in mud was funny as hell. Love it
" What the hell am I gonna do with this one? " 🤣 Keep them coming dude it's always a nice surprise when your new videos pop up! Thanks for the entertainment