@Tim Lamein the 12 valve vr6 was actually designed to be a diesel motor but volkswagon changed it to a gas last second. And it had all forged internals from factory due to it being originally planned to be a diesel. If you’ve ever heard of people saying that the 12 valve can handle more boost when turbod compared to a 24 valve vr6 it’s because of the forged internals.
@Pat Larimer I'm no expert on diesels, but I read that 2 stroke produce more power per pound of engine than 4 stroke. The Detroits were pretty powerful engines in their day. Only recent developments with computer controlled injectors etc were able to eclipse the performance of old Detroit engines. That's what I read. Not sure how true.
@Pat Larimer My understanding is that they packed more HP per LB than 4 stroke diesels, but that the EPA regulations made further production impossible because these engines could not be built to meet EPA regulations. I've seen my fair share of 12V71s in busses throw a rod and I'm guessing the driver lugged the engine in too high a gear once too many times, but other than that, most folks consider them reliable and hard to kill.
@Pat Larimer What gives the impression of their robustness is a few videos featuring people deliberately blowing them up by disabling governors and running them wide open, possibly without crankcase oil. Interestingly, when I see trucks drag racing, they are most almost always running 2 stroke Detroits such as the 8V92.
@Pat Larimer diesels are more efficient than gasoline. The only reason you see less fuel efficiency in a vehicle the same size with a gas version vs a diesel version is the fact the engines are much bigger and it’s normally in a truck. Now you take the old diesel VW engines for regular and the gas ones and the diesel ones had much better gas mileage
@@terryoconnor5262 "Rolls-Royce Merlin" conveys a sense of elegance and luxury like its car division. "Detroit V12" does indeed sound industrial, tough, and destined for commercial use.
This series of Detroit engines came in several different configurations 3-71s , 4-71, 6-71s, 8V-71, 12V-71. The 92 series engines came out later on. the engine nomenclature is unique in its description of the engine. the number prefix says how many cylinders it has and the V suffix denotes it as a V engine such as a V8 or V12 or a V16. the last number is a cylinder displacement for one cylinder in cubic inches. These engines had to use a rootes type supercharger to actually ventilate the crankcase and are not considered as any sort of power adder any more so than a waterpump is on an engine. usually a pair of turbo chargers were used on each bank to supply additional boost into the supercharger. to increase power. These engines were designated with "T" after the displacement numbers, such as 12V92T, There were later versions with aftercoolers and these had an "A" designator to the engine number identify such as 12V92TA. the 12V92TAs were a real powerhouse, and were a very smooth running engine. They also did not smoke any more than any other diesel of that class in the four stroke motors. The 12V71T were great engines as well asvthe V8s. I never had the opportunity to drive of work on a 16V92TA, others in the diesel shop where I worked as a mechanic said their power levels were "unreal!" I believe it too. I liked the Detroit engines, like the in line SOHC 6 Series 60 engines. They were a much "happier" sounding engine than say the Cummins ISX diesels which were rough running pieces of shit to work on in my opinion.
I grew up working on these, they also made a 2-71 used on generators and 16V71. The problem is piston temp on a 2 cycle and rings. They burn clean with load, without that they would carbon up the exhaust port. 21-1 "N" compression ratio cylinder kits you could run a fresh rebuilt engine standing just on cylinder liners and it'd never move. Smooth running compared to 4C want to dance around on the floor. No we didn't have a dyno and before you set it in a boat you'd want to test run. rpm was instant. You don't get all the different stages of HP bc the piston crown can't take the temps. Maybe 20% power increase where the 4C you could get stage1, 2, 3, and 4. Much better cooling of the piston and rings allows this. A 2C motocross bike for example changes the piston rings after every event or every weekend. A testament to the 6-71; A company along the South Texas coast(Ingleside) was going to build some little Yard Mules for moving barges around. They bolted on a water pump to the back for loading and built a cinder block protective green house around it. They did their testing to determine HP, working rpm range(2100) and so forth. As a form of destructive testing and bc the fuel system was next to the intake silencer and had it develop a leak could run away. They removed the Buffer Screw and bypassed the rack Governor control. They found at 6700 rpm the flywheel disintegrated the Bell Housing. This tells us how fast the combustion process is in this engine and why they have the predominant Diesel knock. What RPM would it have hit if the Flywheel wasn't an issue is my question. Anyway, great engine, if we spec'd a 4 cycle in place of the 2 we'd have to double the C.I. and naturally the size was also about twice. A lot of boats along the coast ran 2C back in the day. This was in the 1970-1980's before the 92's really took off.
@David Laney I once worked on a drilling rig that had 6 6-110 's powering it, yes it had power . a rig I drilled on had 3 12-71's , I still like those old Detroits
There are still quite a few Detroit Diesels at work on the water. I grew up on a 36' fishing boat that had a 4-53. My own first boat had an old low block WWII surplus Gray Marine 6-71. I later had the good fortune to have a small tug with a 12-71. We towed a lot of logs with that boat. I worked on one tug that had two 16-71s driving a single shaft through a Falk reduction gear with Allison clutches. The serial number on the engine started with V32-71! It was a factory unit. The boat had 2-71 20 KW 120 D.C. generators. It was only 62' long and steel, it would make anyone a firm believer in hearing protection. G.M. made all kinds of dual and quad units like that to get more power out of the 71 series. There were a few boats around our neck of the woods over the years with quad 6-71 units. They required a lot of fiddling to keep everything synchronized. The military LCM 8 landing craft originally had twin dual 6-71 units. Later many of them were converted to 12-71, which worked better. The Jimmies are terrific engines, I will surely miss them if they are gone before I am. That's not very likely though since they made so many of them. I have a 6-71 in a 19' stern drive log bronc and a little tug with an 8-71 these days. There are a lot of fishing boats with the whole range of 71's from 3 to 16 cylinders working the West Coast and Alaska. Also an occasional 6-110, although those are pretty rare now. A friend of mine has a sweet 2-53 on a small double drum winch and I recently got to hear it run. The Holy Grail that I am keeping my eye out for is a 1-71. If I ever find one, I will put it in a shed outside my bedroom window and wire it up to start as an alarm clock.
@@bigred913 depends, getting smoked out by a running diesel in doors can fucking hurt your eyes and give you a headache, but with as open as that place is and how little it ran, thats not so bad
There were 24v71s built for some yachts. 71series Detroit Diesels saved us over 30% of the fuel used in WW2 According to a military film. The 6-71 was the largest Detroit available at the time (the 6-110 came out in the 50's then the V series 71s) They were geared together in multiples of 2,4 and 8 for marine use. I believe I have enough experience owning an working on virtually all makes (yes I also like most all of the different makes) to know that except for some early 92 series they are the singular best Diesels period if you RTFM (read the furnished manual!) And have the proper application. Like one Cummins engineer said "I like Cummins, but I never saw an engine that could get you back home with more wrong with it than a 2 stroke Detroit!" I've been next to a running 8v149 TTA on straight pipes, WOW! I hate lazy Diesels, a properly set up Detroit ain't! Watch the vids with the running experimental all aluminum 12v53 that was made for throttle response in military hydroplanes! here on the river the EMD series are favorites for tugs because of serviceability, reliability and throttle response. I heard what sounded like 4 B-17s going over and it was a tug with 3 20v710 EMDs! Contrary to popular belief they actually make more torque at a lower rpm than anything else, they just don't sound like it, when an 852 ci 12v71 is hitting 12x per revolution and an 855 Cummins is hitting 3x ! They have the same 2100rpm redline but sound like a Cummins or other 4 stroke 6cyl at 8400! They were made in 53, 71, 92, 110, (6cyl only) and a non blown loop scavenged 4-50. You can lay them on their sides in a bus, turn the block around, put the blower and or exhaust on any side you want, reverse their rotation with no extra parts, the starter on left or right, have more accessory drives than a sane man needs, and rows of oil and water pressure ports and drain backs, the absolute best part is NO head gaskets! The major components are cross compatible across two series, 71, and lesser the 92s to 1936! At least enough to get you home! I get ticked off at seeing all the "runaway Detroit " videos when they were the only engines that all had a cab operated emergency intake air shutdown valve! Also, 2 or 4 screws remove the valve covers so you can put a pair of vice grips on the rack to manually control it! There's 8v92s (736ci) on fire pumps making 750hp. The service man said that he loved them because they will start when they shouldn't and spin up cold to max hp and rpm without blowing up. They were better than anything else and lasted up to 3x longer than other brands on emergency generators. Israeli military is repowering some tracked vehicles with NEW aluminum electronic 8v92s at 850hp. Lightweight has always made them favorable for amphibious use. Because there's always compression on every stroke they don't generally pull rod bolts in two and I know of some fairly stock engines turning 4500+rpm in pulling competition. You don't have to throw away blocks often because they offer oversized liners.
The common 2 stroke engine used in weed eaters, outboards, snow mobiles, chainsaws etc., is only one of many types. Other 2 strokes can have regular oil in the crankcase (such as this V12), to get the air in and out of the cylinder, ports, poppet valves or even sleeve valves have been used, or various combinations thereof. This engine use intake ports thru the cylinder wall, and camshaft driven poppet valves for exhaust. This design will also work for gasoline engines as well as diesel, and requires some type of exhaust scavenger pump (supercharger or turbocharger) to force fresh air into the cylinders.
HaHaHa! lol :) Good comment! I am making some Deltic engine powered die cast vehicles, I bet you will get a kick out of them, since the Deltic is a big triangular shaped 18 cylinder diesel. Vid should be up in a week or two.
+ChargerMiles007 I thought you might like to know that the General Electric MS 5000 gas turbine generator sets used a Detroit V12-71 twin turbo engine as a STARTER MOTOR. The Detroit would fire up, idle for 10 seconds and go to full load. It turned a Twin Disc torque converter that connected to the accessory gear box and drove the turbine to 20% speed through a jaw clutch. This thing would idle for a few seconds, scream wide open for 5 minutes and then shut down as the gas turbine started accelerating from 20% speed to 5100 rpm or 100% speed. The Detroit was rated 600hp and the exhaust was straight up through the roof with no muffler. I worked on many GE gas turbine sets around the world.
+InflatableTRex Here's a drawing.... www.turbinecowboy.com/GTT/frame5 They didn't have digital cameras when I worked on them. My old Olympus OM-1 35mm camera was all I had. This link shows the Detroit diesel starting means, accessory gear and gas turbine. Missing is the reduction gear and the generator. Everything is housed in fireproof sound abated compartments so its hard to see the actual pieces. I can still hear that ragged exhaust note of the V12-71 screaming its guts out at full RPM and sounding like its ready to burst.
Thats a good cross section drawing of the set up, thanks for sending that! I got a photo of a V12-71 Detroit on a generator, quite the impressive engine :)
Even _Justin_ _Bieber_ would rather hear this baby screaming than his horrid voice screaming baby. Dude should just stick to instruments instead of vocals.
Everyone knew a kid in school like the guy standing there in the exhaust. "DeRrRr, I dOnT cArE, I bEeN sNifFiN eXhAuSt FeR yEaRs Cuz MuH dAd HaZ a InJiN ShOp"
My friends dad use to own his big rig cab over and I think it was a 2 stroke , because he would take us on some of his local runs and man that sob would haul azz and it screamed . So many gears :)))
I had a Field Queen Forage Cutter with a V6 2 stroke Detroit Diesel (V6-71 I believe). Ran it thousands of hours. Probably why my ears constantly ring NOW!!! 👌🏻 Was a SCREAMING BEAST 👌🏻 🇺🇸 🤠
I love the GM (Detroit engines) I had the 8V71 in a Denning coach some years ago here in Australia 🇦🇺 nothing like it hearing it on the Jake brake .....
These engines are the best for providing a lot of power at a constant engine speed. They put them in Tanks, big tractors, trucks and specialist heavy equipment
OtisENGINEuity Well because it's a diesel and the engined is govern not to exceed 2100 to 2600 RPM's, depending on the mode. So it sound's simular to a 4 stroke gas engine running at 5000 RPM'sl
Worked on a fishing boat years ago that had 2 of these v12 motors in it. Fast Taching back to port... she sounded so good. Those motors screaming in tandem😉
I used to drive one of those it had two turbos and a scavenging blower. It was so powerful I never used all the gears on flat or near flat ground you could skip and usr every third gear loaded, ie. 1, 3, 6 going up hill only every other gear ie 1, 3, ,5,7 etc. never quiet we called them SCREAMING JIMMIES.
No se que palabra emplear para definir un sonido, como el que este motor produce,en Español tenemos muchas.....impresionante,maravilloso,buenisimo,espectacular,fuera de serie,lo nunca visto en este caso lo nunca oido, creo que glorioso se queda pequeña no tengo palabras......excepcional.
Paintball mag the only thing that’s going to be cancerous is the idiot sucking in all those diesel fumes for no reason. Love diesels and the smell doesn’t bother me but seriously there’s no reason to stand there, breathe that crap, and smell like shit. We don’t need people like you without basic common sense. She wasn’t even freaking out or anything in some douchey way, just pointing out that it’s pretty stupid to do.
Back when I worked in the oil field I drove an old Diamond Reo with a Detroit in it. Used to go to sleep at night with the sound of that engine idling.
@@mikldude9376 used to run that truck all day 7 days a week. Be at an oil field location on stand by and and never shut them down. When we where fracking a well had to be there 24 hours a day for 3 or 4 days used to sleep in that truck.
i get to tair a blower off a v8 in an old 70 pete tomorrow. was driving it and that shaft that runs the blower went out. reall fun. and no you dont need pre mix
Beautiful sound, strong, powerful but not strident, it makes the people of our generation who lived through that time and enjoyed those vehicles feel alive
I love the rumble of a detroit with straight pipes off the exhaust. Really like some of the older ones that were not super charged or turbocharged on older fire engines. Those sounded great and really cranked up going down the street.
Their bigger cousins in the EMD 567, 645, and 710 series are also awesome. My favorites are the 20-645E3 and the 20-710G3B-ES/G3C-ES. Massive V20 turbodiesel 2 strokes.
Ah, the good old Rocky Mountain Humming Bird! I've heard the correct way to drive a truck with one of these in it is to first slam your hand in the door, so you hate the truck. This ensures you rev it properly. They get their power much higher in the band than most Diesels.
There is a big Detroit Diesel generator in the basement of the hospital where my mother used to work. 12V92T running around the clock producing nearly 1000 horsepower and driving a generator for the staff elevators.
@@Whateva67 Selective catalytic reduction with urea is a well proven technology. The biggest problem areas are in poor EGR design and the inclusion of the particulate trap which in reality does nothing for the supposed PM problem as all of that goes into the air with each regen, and when the thing gets plugged up it can cause serious engine damage. I'm all for engines with no aftertreatment and there are several designs out there which meet or exceed even the toughest standards without a particulate trap or catalyst but the current situation in Europe still mandates those to have a particulate trap.
Perfect, that's what im thinking, Take a 572 CID aluminum hemi motor, a 1:1 cam with both intake and exhausts valves open at the same time and a blower for scavenging. Now make a dry sump with a few Mikuni oil injection pumps into the intake and Amsoil Dominator 2 stroke oil as it lubes the bottom first and then burn off as you load it down. This would would really turn some heads as you now have an inverted loop scavenged 2 stroke Hemi.
@@CB-el3sv Nonsense. 1. Once started, any healthy DDA engine having this design of fully flooded injections system, and with an accurately set rack, will idle immediately, hot or room temperature. He tried to let it idle, but it cut off its own fuel and died. So he then had to hold it open. ( Yamaha's are notorious for having their idles set too low, probably because they sound like Yamaha's, even when idling.) 2. I said nothing about smoke ... and anyway, burning a bit of oil (white smoke) has absolutely nothing whatsoever to do with electronically controlled fuel injection systems.
@@sixmagpies idle speed on the governor probably isnt set right if the rack was set incorectly you end up with a lack of power. I rebuild these engines at work
i am not an expert at all. but i don't believe premix is considered here for this reason: the air fuel mixture never passes through the base of the engine because it is a diesel engine, the ignition happens directly in the combustion chamber, the air comes in alone and the injector shoots the fuel at the desired moment during the compression cycle. Unlike conventional 2 stroke engines where the fuel and air mixture enters the engine through the same channel, which passes through the base of the engine, thus being why oil is needed in the fuel/air mixture, to lubricate the whole thing. in the case of this engine, the base of the engine is lubricated thanks to an oil pump just like a conventional 4 stroke engine.... I THINK. hope this helps you guide yourself towards the correct answer.
You arent going to get cancer for standing in the exhaust line for 20 seconds if you dont get cancer for smoking 20 years. Apart from getting a blast of radiation nothing can guarantee cancers. Thats why they are called 'carsinogens' not "this gona give ya cancer baby" materials.
fuel rack setting is rubbish and slow running adjustment is a nightmare n this engine !!! they normally start on half a turn of the flywheel ! at least when we used to do them ;)
I’m 72 years old. I was a member of the Detroit Craftsman Guild ! I worked on a many 12 V 71 Series Detroit Diesels. That by the way is what they’re called. 71 cubic inches per cylinder. Which makes it 852 cubic inches. I don’t remember what the horsepower was when I put them on an engine dyno- but it was up there
i'm with you. age 75 worked for what was than Bruce Detroit /gm diesel which became Pensky which became Atlantic ,what we couldn't screw a 8v71N out to on the dyno. my own city truck was a 318 popped in a set of n95's going from the c65's wound up with just under 400 on the drivers in 12th
Detroit diesel also had two engines coupled at crank. So two set oil filters, fuel filters. Cat 797F uses two engines crank shaft coupled. Another "oil and gas drilling" two 6-71 in gear box to single output shaft. Largest series 567, 653 and 710 use same service tools.
Love the guy getting blown by exhaust....just breathing it in and loving it I have 7.3 F350 it's noisy emits diesel fumes and often chicks say "I love that smell" that's when I know she's worth dating lol
@@dexter131 12V71T was a model they built with twin turbos, but not sequential, just one turbo on each bank blowing into a common hat on the blower. The engine in the clip sounds very flat, the rack and governor tune is way off. When tuned properly these engines will take a full load in one hit with barely a speed change, just an almighty roar from the exhaust.
@@rayg9069 yes I know all about Detroit diesels, as well as modern diesels, as well as many other internal combustion engines and electric motors.. if you watch the video, clearly the turbos are missing from the exhaust manifold - which I assume is why many comments here talk about the motor sounding under tuned.
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that one guy standing there, thoroughly inhaling all the diesel fumes.
he could have gotten a face full of flame too
I think his name is Roland Cole
@@fleafrier1 lol!
Didn't that also give everyone's ears a good pounding there? No muffler, right? :)
@@ghostrider-be9ek I'd have taken your word for it.
Most efficient engine when converting diesel fuel into noise.
VW VR6 is standing together on same side
@@kamilorzechowski6244 i want one of those on diesel
@@kamilorzechowski6244 Vr6 isn't a diesel though
@Tim Lamein the 12 valve vr6 was actually designed to be a diesel motor but volkswagon changed it to a gas last second. And it had all forged internals from factory due to it being originally planned to be a diesel. If you’ve ever heard of people saying that the 12 valve can handle more boost when turbod compared to a 24 valve vr6 it’s because of the forged internals.
@@Goosedoode oh Sweet. Thanks man
today on bottom gear: detroit man breathing exhaust fume
Exhoost fooms
Sexoost föum
Does that even count as exhuast fumes? Hasn't even been filtered.
Detroit is in Michigan lool. This is Ohio.
Ery nice
Detroit. The only diesel that sounds like it belongs in NASCAR racing.
@Pat Larimer I'm no expert on diesels, but I read that 2 stroke produce more power per pound of engine than 4 stroke. The Detroits were pretty powerful engines in their day. Only recent developments with computer controlled injectors etc were able to eclipse the performance of old Detroit engines. That's what I read. Not sure how true.
@Pat Larimer My understanding is that they packed more HP per LB than 4 stroke diesels, but that the EPA regulations made further production impossible because these engines could not be built to meet EPA regulations.
I've seen my fair share of 12V71s in busses throw a rod and I'm guessing the driver lugged the engine in too high a gear once too many times, but other than that, most folks consider them reliable and hard to kill.
@Pat Larimer What gives the impression of their robustness is a few videos featuring people deliberately blowing them up by disabling governors and running them wide open, possibly without crankcase oil.
Interestingly, when I see trucks drag racing, they are most almost always running 2 stroke Detroits such as the 8V92.
It sounds like the equivalent of an old man trying to get out of bed
@Pat Larimer diesels are more efficient than gasoline. The only reason you see less fuel efficiency in a vehicle the same size with a gas version vs a diesel version is the fact the engines are much bigger and it’s normally in a truck. Now you take the old diesel VW engines for regular and the gas ones and the diesel ones had much better gas mileage
Just the name alone "V12 Detroit" is maybe the manliest most industrial sounding name you can have on an engine
They also made V16s
Other than Rolls Royce Merlin of course; but I suspect you already knew that 👍🇬🇧
@@terryoconnor5262 I'd say the Merlin is the best sounding one, especially when you have 3 or 4 P-51's fly over you at the same time.
@@terryoconnor5262 "Rolls-Royce Merlin" conveys a sense of elegance and luxury like its car division. "Detroit V12" does indeed sound industrial, tough, and destined for commercial use.
No it sounds like it want to steal my wallet
0:32 this guy really wanted the full experience. Stood right in there for the money shot.
That just new model of hairdryer
guy just standing there- "oh yes, i love inhaling toxic fumes that will give me brain cancer by the age of 37"
thats me. i also do that in front of campfires
If it smells good, then it must be good for you! Lol
Damn
snowflake
@@LR_84 Nope.
This series of Detroit engines came in several different configurations 3-71s , 4-71, 6-71s, 8V-71, 12V-71. The 92 series engines came out later on. the engine nomenclature is unique in its description of the engine. the number prefix says how many cylinders it has and the V suffix denotes it as a V engine such as a V8 or V12 or a V16. the last number is a cylinder displacement for one cylinder in cubic inches. These engines had to use a rootes type supercharger to actually ventilate the crankcase and are not considered as any sort of power adder any more so than a waterpump is on an engine. usually a pair of turbo chargers were used on each bank to supply additional boost into the supercharger. to increase power. These engines were designated with "T" after the displacement numbers, such as 12V92T, There were later versions with aftercoolers and these had an "A" designator to the engine number identify such as 12V92TA. the 12V92TAs were a real powerhouse, and were a very smooth running engine. They also did not smoke any more than any other diesel of that class in the four stroke motors. The 12V71T were great engines as well asvthe V8s. I never had the opportunity to drive of work on a 16V92TA, others in the diesel shop where I worked as a mechanic said their power levels were "unreal!" I believe it too. I liked the Detroit engines, like the in line SOHC 6 Series 60 engines. They were a much "happier" sounding engine than say the Cummins ISX diesels which were rough running pieces of shit to work on in my opinion.
I love that sound. Wonder why the Detroit 2 stroke died out?
@@p1anosteve Smog.
I grew up working on these, they also made a 2-71 used on generators and 16V71. The problem is piston temp on a 2 cycle and rings. They burn clean with load, without that they would carbon up the exhaust port. 21-1 "N" compression ratio cylinder kits you could run a fresh rebuilt engine standing just on cylinder liners and it'd never move. Smooth running compared to 4C want to dance around on the floor.
No we didn't have a dyno and before you set it in a boat you'd want to test run. rpm was instant. You don't get all the different stages of HP bc the piston crown can't take the temps. Maybe 20% power increase where the 4C you could get stage1, 2, 3, and 4. Much better cooling of the piston and rings allows this.
A 2C motocross bike for example changes the piston rings after every event or every weekend. A testament to the 6-71; A company along the South Texas coast(Ingleside) was going to build some little Yard Mules for moving barges around. They bolted on a water pump to the back for loading and built a cinder block protective green house around it. They did their testing to determine HP, working rpm range(2100) and so forth. As a form of destructive testing and bc the fuel system was next to the intake silencer and had it develop a leak could run away. They removed the Buffer Screw and bypassed the rack Governor control. They found at 6700 rpm the flywheel disintegrated the Bell Housing. This tells us how fast the combustion process is in this engine and why they have the predominant Diesel knock. What RPM would it have hit if the Flywheel wasn't an issue is my question.
Anyway, great engine, if we spec'd a 4 cycle in place of the 2 we'd have to double the C.I. and naturally the size was also about twice. A lot of boats along the coast ran 2C back in the day. This was in the 1970-1980's before the 92's really took off.
@David Laney I once worked on a drilling rig that had 6 6-110 's powering it, yes it had power . a rig I drilled on had 3 12-71's , I still like those old Detroits
There are still quite a few Detroit Diesels at work on the water. I grew up on a 36' fishing boat that had a 4-53. My own first boat had an old low block WWII surplus Gray Marine 6-71. I later had the good fortune to have a small tug with a 12-71. We towed a lot of logs with that boat. I worked on one tug that had two 16-71s driving a single shaft through a Falk reduction gear with Allison clutches. The serial number on the engine started with V32-71! It was a factory unit. The boat had 2-71 20 KW 120 D.C. generators. It was only 62' long and steel, it would make anyone a firm believer in hearing protection. G.M. made all kinds of dual and quad units like that to get more power out of the 71 series. There were a few boats around our neck of the woods over the years with quad 6-71 units. They required a lot of fiddling to keep everything synchronized. The military LCM 8 landing craft originally had twin dual 6-71 units. Later many of them were converted to 12-71, which worked better. The Jimmies are terrific engines, I will surely miss them if they are gone before I am. That's not very likely though since they made so many of them. I have a 6-71 in a 19' stern drive log bronc and a little tug with an 8-71 these days. There are a lot of fishing boats with the whole range of 71's from 3 to 16 cylinders working the West Coast and Alaska. Also an occasional 6-110, although those are pretty rare now. A friend of mine has a sweet 2-53 on a small double drum winch and I recently got to hear it run. The Holy Grail that I am keeping my eye out for is a 1-71. If I ever find one, I will put it in a shed outside my bedroom window and wire it up to start as an alarm clock.
well, that's one way to get a v8 sound from a v12 engine
Bruh that is so fucking true hahaha
I dont know why u are first who pointed that. It sounds almost the same. And i was looking for comment which is pointing that.
It's sounds like a L6 or V6 with chopped pipes what you guys are talking about? Lol.
And their v8's sound like the most testosterone fueled diesely diesel ever
That guy at 0:34 likes the smell of freedom.
@Randy Wiesendanger you ok? Guess you huff exhaust fumes too...
@Randy Wiesendanger seeing as how you've posted that in other comments you're clearly out of insults. You probably think the earth is flat
@Randy Wiesendanger Gay stoner or not, at least we aren't looking up videos on how to get girls... Oh wait
I would like the smell of freedom aswell
@Randy Wiesendanger Takes one to know one
i wanna get the 2 strokes back!
the hippies would never allow it because they think smoke stays in the air forever
mehdi 2344 fuck epa
Buy Trabant.
YES Two Stroke Diesel the best of the best
@@mikecubes1642 but they travell from USA to thailand by plane..... kerosine is also diesel. and a airplane get alot fuel burned.
dude at :33....???....."I'm too tough to move outta the way"
Matt Miller says the tough woman sitting being a computer
Matt Miller hes probably enjoying the smell
you ever smelled burnt diesel?
Randy Wiesendanger better than chicken
@@bigred913 depends, getting smoked out by a running diesel in doors can fucking hurt your eyes and give you a headache, but with as open as that place is and how little it ran, thats not so bad
I want one of these engines, just sitting on a test stand like this, that I can go out and fire up whenever I need something to cheer me up a bit.
Agree wit. You
Hey I’m having a cookout, who’s bringing the diesel
although a 350 Cummins with a 6 inch straight stack...................
Let your neighbors know daddies home.
@@calvinevans8305 Oh yeah fire up that 8-71 with straights and see how the neighbors feel about it
Nothing turns diesel into smoke & noise like a Screaming Jimmy. I love to hear them run.
exhaust on jimmy smell different all most pleasant
Damn , no body had hearing protection? That engine sounded like heaven but had to be loud as hell in that building.
great
The way it should be don't be a panty
No pussies there
@@MrDavidelliottjr No just deaf fools.
WHAT?
There were 24v71s built for some yachts. 71series Detroit Diesels saved us over 30% of the fuel used in WW2 According to a military film. The 6-71 was the largest Detroit available at the time (the 6-110 came out in the 50's then the V series 71s) They were geared together in multiples of 2,4 and 8 for marine use. I believe I have enough experience owning an working on virtually all makes (yes I also like most all of the different makes) to know that except for some early 92 series they are the singular best Diesels period if you RTFM (read the furnished manual!) And have the proper application. Like one Cummins engineer said "I like Cummins, but I never saw an engine that could get you back home with more wrong with it than a 2 stroke Detroit!" I've been next to a running 8v149 TTA on straight pipes, WOW! I hate lazy Diesels, a properly set up Detroit ain't! Watch the vids with the running experimental all aluminum 12v53 that was made for throttle response in military hydroplanes! here on the river the EMD series are favorites for tugs because of serviceability, reliability and throttle response. I heard what sounded like 4 B-17s going over and it was a tug with 3 20v710 EMDs! Contrary to popular belief they actually make more torque at a lower rpm than anything else, they just don't sound like it, when an 852 ci 12v71 is hitting 12x per revolution and an 855 Cummins is hitting 3x ! They have the same 2100rpm redline but sound like a Cummins or other 4 stroke 6cyl at 8400! They were made in 53, 71, 92, 110, (6cyl only) and a non blown loop scavenged 4-50. You can lay them on their sides in a bus, turn the block around, put the blower and or exhaust on any side you want, reverse their rotation with no extra parts, the starter on left or right, have more accessory drives than a sane man needs, and rows of oil and water pressure ports and drain backs, the absolute best part is NO head gaskets! The major components are cross compatible across two series, 71, and lesser the 92s to 1936! At least enough to get you home! I get ticked off at seeing all the "runaway Detroit " videos when they were the only engines that all had a cab operated emergency intake air shutdown valve! Also, 2 or 4 screws remove the valve covers so you can put a pair of vice grips on the rack to manually control it! There's 8v92s (736ci) on fire pumps making 750hp. The service man said that he loved them because they will start when they shouldn't and spin up cold to max hp and rpm without blowing up. They were better than anything else and lasted up to 3x longer than other brands on emergency generators. Israeli military is repowering some tracked vehicles with NEW aluminum electronic 8v92s at 850hp. Lightweight has always made them favorable for amphibious use. Because there's always compression on every stroke they don't generally pull rod bolts in two and I know of some fairly stock engines turning 4500+rpm in pulling competition. You don't have to throw away blocks often because they offer oversized liners.
The common 2 stroke engine used in weed eaters, outboards, snow mobiles, chainsaws etc., is only one of many types.
Other 2 strokes can have regular oil in the crankcase (such as this V12), to get the air in and out of the cylinder, ports, poppet valves or even sleeve valves have been used, or various combinations thereof. This engine use intake ports thru the cylinder wall, and camshaft driven poppet valves for exhaust. This design will also work for gasoline engines as well as diesel, and requires some type of exhaust scavenger pump (supercharger or turbocharger) to force fresh air into the cylinders.
ChargerMiles007 ``supercharger or turbocharger`` yes it need it and one more thing need after that is priest for owner !
HaHaHa! lol :) Good comment!
I am making some Deltic engine powered die cast vehicles, I bet you will get a kick out of them, since the Deltic is a big triangular shaped 18 cylinder diesel. Vid should be up in a week or two.
+ChargerMiles007
I thought you might like to know that the General Electric MS 5000 gas turbine generator sets used a Detroit V12-71 twin turbo engine as a STARTER MOTOR. The Detroit would fire up, idle for 10 seconds and go to full load. It turned a Twin Disc torque converter that connected to the accessory gear box and drove the turbine to 20% speed through a jaw clutch. This thing would idle for a few seconds, scream wide open for 5 minutes and then shut down as the gas turbine started accelerating from 20% speed to 5100 rpm or 100% speed. The Detroit was rated 600hp and the exhaust was straight up through the roof with no muffler. I worked on many GE gas turbine sets around the world.
+InflatableTRex
Here's a drawing.... www.turbinecowboy.com/GTT/frame5
They didn't have digital cameras when I worked on them. My old Olympus OM-1 35mm camera was all I had. This link shows the Detroit diesel starting means, accessory gear and gas turbine. Missing is the reduction gear and the generator. Everything is housed in fireproof sound abated compartments so its hard to see the actual pieces. I can still hear that ragged exhaust note of the V12-71 screaming its guts out at full RPM and sounding like its ready to burst.
Thats a good cross section drawing of the set up, thanks for sending that! I got a photo of a V12-71 Detroit on a generator, quite the impressive engine :)
I'd much rather listen to this baby screaming than just bieber screaming baby lol
Me to. I like the sound of a 2 stroke.
Desease
Right
Yeah no shit.
Even _Justin_ _Bieber_ would rather hear this baby screaming than his horrid voice screaming baby.
Dude should just stick to instruments instead of vocals.
Everyone knew a kid in school like the guy standing there in the exhaust. "DeRrRr, I dOnT cArE, I bEeN sNifFiN eXhAuSt FeR yEaRs Cuz MuH dAd HaZ a InJiN ShOp"
My friends dad use to own his big rig cab over and I think it was a 2 stroke , because he would take us on some of his local runs and man that sob would haul azz and it screamed . So many gears :)))
I had a Field Queen Forage Cutter with a V6 2 stroke Detroit Diesel (V6-71 I believe).
Ran it thousands of hours. Probably why my ears constantly ring NOW!!! 👌🏻 Was a SCREAMING BEAST 👌🏻 🇺🇸 🤠
I love the GM (Detroit engines) I had the 8V71 in a Denning coach some years ago here in Australia 🇦🇺 nothing like it hearing it on the Jake brake .....
As soon as it revved the first pass, instantly the word "TANK" popped in my head.
Speaking of V12 diesel engines and 'Tank,' you may find this of interest: th-cam.com/video/mBiSTD9EFuQ/w-d-xo.html :)
Nice. To me the gold standard for 2 stroke diesel sounds were the EMD locomotive diesels. But this is a close second.
Motor diesel 2 tempos é muito superior.
nothing else sounds like that, retired cg mech, love the old detroits.
These engines are the best for providing a lot of power at a constant engine speed. They put them in Tanks, big tractors, trucks and specialist heavy equipment
I used to rebuild Detroits when I was younger , it always was great feeling to bring them up to no load
I’m a 1986 graduate of Ohio Diesel Technician Institute. Such great memories!
VERY SMOOTH ! Really sounds great.
amazing, you'd never guess they were 2 strokes by the sound
OtisENGINEuity Well because it's a diesel and the engined is govern not to exceed 2100 to 2600 RPM's, depending on the mode. So it sound's simular to a 4 stroke gas engine running at 5000 RPM'sl
Sounds nice!
Got a bit of an exhaust leak in the right bank towards the front of the manifold
Worked on a fishing boat years ago that had 2 of these v12 motors in it. Fast Taching back to port... she sounded so good. Those motors screaming in tandem😉
This sound never gets old!
Sounds smooth, peppy and powerful.
Well that ain't how it should sound. Sounds like someone needs to fuck with the rack
I used to drive one of those it had two turbos and a scavenging blower. It was so powerful I never used all the gears on flat or near flat ground you could skip and usr every third gear loaded, ie. 1, 3, 6 going up hill only every other gear ie 1, 3, ,5,7 etc. never quiet we called them SCREAMING JIMMIES.
+seth mullins. your dad probally drove the 6 cylinder jimmy completely diffrent animal. But they both made way to much noise, it was deafening.
The 53 series Detroit's made a lot noise but didn't get there very fast. Nice to listen to though as long I'm not driving it.
@@250kent And would piss oil out of the blow by while idling
No se que palabra emplear para definir un sonido, como el que este motor produce,en Español tenemos muchas.....impresionante,maravilloso,buenisimo,espectacular,fuera de serie,lo nunca visto en este caso lo nunca oido, creo que glorioso se queda pequeña no tengo palabras......excepcional.
lovely sounding engine, but whats with standing in the exaust? that's just idiotic.
Welcome to blocksville stupid, oh and by the way, I'm a woman you moron.
Paintball mag the only thing that’s going to be cancerous is the idiot sucking in all those diesel fumes for no reason. Love diesels and the smell doesn’t bother me but seriously there’s no reason to stand there, breathe that crap, and smell like shit. We don’t need people like you without basic common sense. She wasn’t even freaking out or anything in some douchey way, just pointing out that it’s pretty stupid to do.
makes your clothes stink.
I see here that either someone deleted their stupid comment or someone's been banned. :)
I agree that standing in the exhaust smoke is idiotic.
'MURICA! That's why.
that is the best sounding two stroke i’ve ever heard
Buzzin' Dozen!
How have only 10 people liked this comment?
@@lanceroark6386
16
@@logoseven3365 I posted a month ago
Back when I worked in the oil field I drove an old Diamond Reo with a Detroit in it. Used to go to sleep at night with the sound of that engine idling.
@@imd1b4u 12V71
@@imd1b4u I used it to haul equipment. Company I worked for had several John Deere 850's and 690 track hoe.
It does stay with you doesnt it :) .
@@mikldude9376 used to run that truck all day 7 days a week. Be at an oil field location on stand by and and never shut them down. When we where fracking a well had to be there 24 hours a day for 3 or 4 days used to sleep in that truck.
i get to tair a blower off a v8 in an old 70 pete tomorrow. was driving it and that shaft that runs the blower went out. reall fun. and no you dont need pre mix
I remember hearing something like that in some of the school buses I rode in during the early '90's. made me feel a little nostalgic for a minute.
that is diesel engine sound!
It is a diesel
That diesel sounds more like a rally car engine
Yeah no shit
Loud as phuck!
Definitely sounded awesome. Very smooth running engine.👍👍
The guy standing in the smoke is the special kid in the class
Lol
Now he rides the short bus home.
@@t.s.racing 😂the short bus with a 12v-92 in it
Beautiful sound, strong, powerful but not strident, it makes the people of our generation who lived through that time and enjoyed those vehicles feel alive
Wuoww!! That's music to my ears...
who still looks this in 2021 and thinks I NEED THIS IN MY CARRR!!
0:14 *disappointed aaaaa*
I love the rumble of a detroit with straight pipes off the exhaust.
Really like some of the older ones that were not super charged or turbocharged on older fire engines. Those sounded great and really cranked up going down the street.
I have a Oliver 1950 with a 4-53 Detroit I'm about to hook to a plow much to the enjoyment of my neighbors.
They will not run without a blower all Detroits have a blower but not a turbocharger
I have one at work still in service as a generator made in 1968 and still runs strong.
Best diesel souund i've ever heard
Their bigger cousins in the EMD 567, 645, and 710 series are also awesome. My favorites are the 20-645E3 and the 20-710G3B-ES/G3C-ES. Massive V20 turbodiesel 2 strokes.
Those where based of a CAT design
Ah, the good old Rocky Mountain Humming Bird! I've heard the correct way to drive a truck with one of these in it is to first slam your hand in the door, so you hate the truck. This ensures you rev it properly. They get their power much higher in the band than most Diesels.
I love this sound!!
There is a big Detroit Diesel generator in the basement of the hospital where my mother used to work. 12V92T running around the clock producing nearly 1000 horsepower and driving a generator for the staff elevators.
douro20 that’s cool 😎. Back when diesels were simple and not burdened with all the emissions crap like today’s DEF drinking garbage
@@Whateva67 Selective catalytic reduction with urea is a well proven technology. The biggest problem areas are in poor EGR design and the inclusion of the particulate trap which in reality does nothing for the supposed PM problem as all of that goes into the air with each regen, and when the thing gets plugged up it can cause serious engine damage. I'm all for engines with no aftertreatment and there are several designs out there which meet or exceed even the toughest standards without a particulate trap or catalyst but the current situation in Europe still mandates those to have a particulate trap.
that mid throttle roar is sexy as hell, wish i legit had an old dodge charger with one of these in it
man,i swear watching the video i had the exact same thought and scrolled down to see if im the only one haha
Perfect, that's what im thinking, Take a 572 CID aluminum hemi motor, a 1:1 cam with both intake and exhausts valves open at the same time and a blower for scavenging. Now make a dry sump with a few Mikuni oil injection pumps into the intake and Amsoil Dominator 2 stroke oil as it lubes the bottom first and then burn off as you load it down. This would would really turn some heads as you now have an inverted loop scavenged 2 stroke Hemi.
@@jlo13800 is this a thing?
Used to love hearing this engine fire up when I went to OTC
hell yea screamin demons baby!! long live DD!
The two strokes I grew up with sounded much different. My two strokes were in motorcycles.
Probably because motorcycles don’t have 12 cylinders
Back that buffer scew out some and that motor will sit and talk to you when it idles.
I used to love the v6 full pedal. Then release and the egsourse brake would kick in. Wat a sound around the mountains
Car dealer: how much horsepower you want on your ride?
Guy who gonna buy the car: yes
Worked on those engines in the US Army 44+ years ago...... Had them in a few tanks...
Yes, revving a diesel after a cold start is the key to longevity.
The guy standing in the exhaust stream with the shit eating grin is living his dream and you can see it on him 😄
Rack hasn't been set properly, and the supposedly fully flooded fuel system is full of air.
Correct on the rack, but even a smidgen of air in the fuel system and she would never start.
@@CB-el3sv Nonsense.
1. Once started, any healthy DDA engine having this design of fully flooded injections system, and with an accurately set rack, will idle immediately, hot or room temperature. He tried to let it idle, but it cut off its own fuel and died. So he then had to hold it open. ( Yamaha's are notorious for having their idles set too low, probably because they sound like Yamaha's, even when idling.)
2. I said nothing about smoke ... and anyway, burning a bit of oil (white smoke) has absolutely nothing whatsoever to do with electronically controlled fuel injection systems.
@@sixmagpies idle speed on the governor probably isnt set right if the rack was set incorectly you end up with a lack of power. I rebuild these engines at work
@@eroc1970 Correct .. I should have said rack or idle.
Throttle response is amazing and the smooth
You should hear the 24V71T ! Basically two of these engines bolted end to end. It sounds like a swarm of very angry bees.
i am not an expert at all. but i don't believe premix is considered here for this reason: the air fuel mixture never passes through the base of the engine because it is a diesel engine, the ignition happens directly in the combustion chamber, the air comes in alone and the injector shoots the fuel at the desired moment during the compression cycle. Unlike conventional 2 stroke engines where the fuel and air mixture enters the engine through the same channel, which passes through the base of the engine, thus being why oil is needed in the fuel/air mixture, to lubricate the whole thing. in the case of this engine, the base of the engine is lubricated thanks to an oil pump just like a conventional 4 stroke engine.... I THINK. hope this helps you guide yourself towards the correct answer.
2 Stroke Diesels Do Not have Oil in Fuel Pre-Mix. Lubrication is the Similar to a 4 Stroke Engine.
Kinda weird that I'm gonna be going to college in the same place as that and yet this just popped up on my recommended
And that lady's and gents is how you get cancer!! Beautiful engine ashame about the Muppet standing in the fumes
You arent going to get cancer for standing in the exhaust line for 20 seconds if you dont get cancer for smoking 20 years. Apart from getting a blast of radiation nothing can guarantee cancers. Thats why they are called 'carsinogens' not "this gona give ya cancer baby" materials.
I love this, definetly one of my favorite engine noises no question about it!
Would take a 71 series Detroit Diesel over a Clatterpillar or Wrong Dear on a Boat anytime.
How sweet the Ring!
Some say that the guy standing directly in front of the exhaust hasn't washed his clothes to this day.
fuel rack setting is rubbish and slow running adjustment is a nightmare n this engine !!! they normally start on half a turn of the flywheel ! at least when we used to do them ;)
Buffer screw on the governor housing will generally stop the hunting.
but won't fix the starting !
yes 12v71Ts tune up took a bit of time
Most of the bus engines run without a buffer screw. They sit there and hunt till you bump on fast idle
I would have totally been that guy that stood there..🤤 you can’t beat the sound of a Detroit ❣️❣️❤️
That engine needs a 5 foot straight pipe on both ex.manifolds for correct sound.
Expansion chamber!
and a jake brake
What a beautiful sound.
Let's drop that unit in a Ford ranger..lol😉
Sounds even better under load like in a Bison, Coyote or TLAV. Sounds epic.
Bison? Coyote? TLAV? I know one, the Chevrolet Bison. But what're the other two?
THIS ENGINE SOUNDS TUFF.
there are
Sounds like a sportscar
I’m 72 years old. I was a member of the Detroit Craftsman Guild ! I worked on a many 12 V 71 Series Detroit Diesels. That by the way is what they’re called. 71 cubic inches per cylinder. Which makes it 852 cubic inches. I don’t remember what the horsepower was when I put them on an engine dyno- but it was up there
Just thought I would share that with U guys‼️Worked on just 71 series Detroit’s back in the day!
i'm with you. age 75 worked for what was than Bruce Detroit /gm diesel which became Pensky which became Atlantic ,what we couldn't screw a 8v71N out to on the dyno. my own city truck was a 318 popped in a set of n95's going from the c65's wound up with just under 400 on the drivers in 12th
non of this ricer shit , let's make some torque!
Detroit diesel also had two engines coupled at crank. So two set oil filters, fuel filters. Cat 797F uses two engines crank shaft coupled.
Another "oil and gas drilling" two 6-71 in gear box to single output shaft. Largest series 567, 653 and 710 use same service tools.
The only diesel engine ever made that sounds good.
When I went in the Air Force, once we got to Lackland A.F.B, the shuttle buses were powered by these things. I remember the different exhaust note.
no nookie nookie tonight when you stink like dead diesel fuel maybe not for a month
One of my favorite engine sounds !
are they pumping out unfiltered two-stroke exhaust INSIDE of a building? yikes
Yes but if I were there, I'd be fresh out of fucks to give about air quality.
yes good
Love the guy getting blown by exhaust....just breathing it in and loving it
I have 7.3 F350 it's noisy emits diesel fumes and often chicks say
"I love that smell" that's when I know she's worth dating lol
The buzzen dozen
Nice.I like the color of the engine too.
major exhaust leak up front though
so what let her go
You mean a partial straight pipe
I use to drive one them when I was 15 60 ton dump truck no brakes it was awesome
Not best sound at all, diesels sound the best with large screaming turbos.
Did you miss the fact that this is a diesel. A twin turbo (sequential) diesel at that?
@@matthewoconnor5690 did you watch this video? There are no turbos on this engine.
@@dexter131 12V71T was a model they built with twin turbos, but not sequential, just one turbo on each bank blowing into a common hat on the blower. The engine in the clip sounds very flat, the rack and governor tune is way off. When tuned properly these engines will take a full load in one hit with barely a speed change, just an almighty roar from the exhaust.
@@rayg9069 yes I know all about Detroit diesels, as well as modern diesels, as well as many other internal combustion engines and electric motors.. if you watch the video, clearly the turbos are missing from the exhaust manifold - which I assume is why many comments here talk about the motor sounding under tuned.
Dexter Schray Maybe this particular model was built without them
Wow we had overhauled this engine 2 stroke, port, air chargers etc. beautiful engine
Buzzn dozen
Guy: You smell that? Diesel I love the smell of diesel in the morning.💨😌
That sound will scare a “liberal” away!🤣
@Karl Childers go crawl back in to your “safe space!”
Yo conduje un camión con motor Detroit, y fue espectacular, es un motor fuera de serie, fantástico.