What's Inside a 16cyl 2 Stroke Detroit Diesel?

[@DEBOSSGARAGE]

Blowers, valve covers and badging are sold. Check our eBay listings to see what else is available: www.ebay.ca/usr/deb0ssgarage?_trksid=p2047675.l2559 Corrections on the video: The engines are not ambidextrous, you can't switch the cranks around because the flanges are different. Also when they run backwards, they puke oil out the blowers and it's not good for them. You need to time the engines differently in the timing cover to get them to run backwards.

[@stuartd9741]

I'd be interested in a piston/Conrod.

[@CP110]

This was actually very useful, my dad has an old tow truck with a CAT 3116 which has mechanical injection. its having a hard start problem watching this video has given me some pointers on what components in the fuel system could be the culprit

[@gassolean]

lol thats what i wanted hahaha if you sell one from the other 3 you have let me know

[@Romans--bo7br]

@@CP110..... The Cat 3116 and the GM/Detroit Diesels utilized two completely different types of injection systems... they were as different as "black is to white".

[@kennethlaw5216]

@@CP110 yes Detroit is different systems

[@killthebums]

There’s nothing like taking shit apart and not having to remember how it goes back together

[@quentin8094]

Mickey Vicegrips it’s a thing we all love

[@greenlover247]

LOL To True bro

[@bf3and4highlights83]

18 reverse gears and two forward. Sounds like a French tank.

[@louis-philippelavoie6929]

Here's a like. Underated comment

[@glenholmgren1218]

BF3 and 4 HighLights ...? French tanks had FORWARD gears ...?

[@maxiv6833]

@@glenholmgren1218 Yeah, in case the enemy comes from behind

[@glenholmgren1218]

Maxi V 👍🤣🤣🤣

[@koller8930]

lmaoo

[@martinsmith8417]

Finally a channel where the presenter has real knowledge, its nice to see.

[@rickyj2013]

Sounds like someone who knows about engines but not about Detroit’s and maybe spent an hour asking an old timer how stuff works and is now trying to pass the information off as his own...there are little details that are incredibly incorrect.

[@chriswillmott462]

Real knowledge of what exactly?? How to destroy a Detroit? Any apprentice can do that.

[@PetroPowerLtd]

I agree with Ricky J. I was a Detroit (and Cummins and Cat) mechanic for years and now consult to oil and gas sector on large engine power with Sulzer 2 stroke and Wartsila 4 strokes. Lots and lots of errors in the technical descriptions. But it serves the purpose of entertaining enough people to yield advertising revenue so it is smart in that way !

[@csikarus]

@@PetroPowerLtd I am on the other side of the globe, and I work on the electric maintenance , came a cross on the old Detroit 2-stroke V12 diesel engine in the 300 KW power plant, left as valid and functional, has not been working for the last 6-8 years, can you help me with some guidance and instructions on what to do to start properly for the first time and to avoid or warn the run-away situation ??? Thanks in advance!

[@MAGGOT_VOMIT]

*Even though he never says "Eh?". I found myself saying for him.*

[@bing4332]

I’ve tried finding videos showing how these engines work. No one ever went into detail or explaining it in a way that I understood so now I know so I thank You.

[@grabasandwich]

I've been watching Detroit vids for years. There's a few good ones, you just have to know what to search for. There's so many variations on these Screamin Jimmies. 3-53, 4-53, 6V53, etc. They don't make much power, have a narrow power band, and usually leak everywhere, but they're so cool!

[@grabasandwich]

kzbin.info/www/bejne/opSlmnavjZ6fpM0 😁

[@j.mshrader4104]

They made the 53 and 71 series from single cylinders up to v24s. The 92s were V-block motors from v6 all the way to v16s. Wicked cool engines.

[@Eriske1874]

Watch sultzer and wartsila videos too

[@aaronfoulk9849]

If you think these are cool and unusual, search for Commer engines on you tube. They were a truck and diesel engine manufactured in Australia. Still a 2-stroke diesel engine, sounds like a Detroit, but very unusual in the way they're built and run.

[@revtec4267]

Its a credit to the engineers who originally designed the engine . They are a work of art and it just goes to show how much abuse the can sustain and still go ;-)

[@wildbill6976]

Charles F. Kettering

[@roncaptain9527]

Love your videos... Thanks for the great content... I love these old Detroits... The GM engineers of these great engines. Are to be commended for their hard work. Captain Ron, Naples FL

[@user-dw1zi1ok6o]

I have some information on the Mexico head @19:00. I used to work at Detroit Diesel Remanufacturing and they started bringing in new bare castings from Mexico that we would CNC machine into a finished replacement head. The Mexico castings have had problems with QC and consistency of material. This option of head was usually cheaper for the initial re-man cost, but as you can tell with this example, would not usually hold up in the longevity department. These platforms were put on the back-burner of interests for Detroit Diesel at the time (especially for remanufactured replacements) because of the then-new development and marketing of their DD15 engines after the transition out of the series 60.

[@specializedcyclekid]

Custom sockets... That's a real man's tool box

[@gmjunky87]

Dad worked for a Mack dealer for 25 years. Had tons of home made tools haha

[@beeroquoisnation]

@@gmjunky87 Gotta spend money to make money.

[@shadowthehedgehog4737]

@@gmjunky87 Did he buy Mac tools?

[@gmjunky87]

@@shadowthehedgehog4737 haha nah Mack Trucks dealer

[@shadowthehedgehog4737]

@@gmjunky87 That was a joke.

[@jason8096]

I've hear about the old Detroit 2 stroke diesels but never knew much about them. The technology that went into the making of these engines is absolutely amazing! Thanks for the in depth tear down and play by play on it.

[@cadu6267]

Eu tenho um 12V71 no meu barco e afirmo: É o melhor motor do mundo!

[@JasonTheMunicipalMechanic]

I drove an 80’s Mack that if you backed too hard into a pile of dirt it would stall and spin the engine the opposite way and would run in reverse. It ran like crap and it was weird seeing exhaust coming from the intake. It took me a minute to figure it out the first time it happened because it stopped and started backwards in a second so I didn’t realize it

[@chadmusgrove4571]

Probably need to fix a blower rotation in order for it to run properly in reverse

[@bababooey7576]

These engines are unreal!!

[@beckywatt5048]

Chad Musgrove Need to reverse the oil pump in the front , no oil pressure in reverse.

[@beckywatt5048]

bababooey7576 Rebuilt a couple of these, used them on generators and asphalt grinders , rubber tired dozers, also a V. 12 Cummins.

[@jakemj03]

The blower became a sucker

[@don7406]

2 sets of rings, blower for pressure, air starter, running backwards. What a fascinating engine. I've read about these, but actually getting to see it...Thanks so much Rich.

[@tomlayton2606]

What he didn't mention is the seal plugs on the piston to keep the pressurized air from leaking into the pan around the piston pins

[@JonMarHannah]

A lot of hard work went into this video. Thanks for taking the time. Very interesting.

[@firstname6208]

I have seen these engines run for thousand miles with a conn rod cap in the pan if you don't shut it down. positive pressure from the blower keeps the rod on the crank. the cross head piston came apart in your engine and the rod punched out. the piston rings have a line on the face of the wear surface. when the line is gone the rings are done. you don't need to take all that rocker hardware off to remove an injector. just the rack rod, the jumper lines and the two bolts that hold the rocker shaft. the rockers will flip over If the cam is in the right spot. then you can clean the inj tube, install the new injector and flip the rockers back. adj the inj height and the rack and done. always remove the rad cap before removing the injector- pressure in the rad will seep past the inj copper tube and into the cyl. then you need to remove the head to replace the coppers. (they swedge in from the bottom, and you need to cut the new coppers to set the injector depth. inj depth is the distance from the piston to the inj tip so your spray hits the piston cup correctly for max burn. factually yes the engine can roll backwards and fire up, but I assure you the oil pump is also running backwards so engines do not last long with negative oil pressure. left hand engine have a different oil pump. you pulled the piston too early. if you cut one 3/8" bolt to the exact length and put it in the intake ports you can use the crank and rotate the engine to lift the stuck liner out. piston, rod and liner all at once- provided the rings have enough tension to hold the liner as you lift. haven't seen inside one of those for many years. good stuff.

[@teribear45]

Shoot, you should be a 2 stroke Detroit KZbinr!

[@P1GDe5tRoYeR69]

Man, why hasn't this dude hit a million subscribers yet? Your videos are absolutely awesome!!!

[@Sackmatters]

P1GDe5tRoYeR69 because he’s a real worker in a real shop and not being a drama queen bitch.

[@billbill8555]

My wife and I live on an old Bertram with twin 8v71 Ti Detroits and this is the first time I’ve found a resource to see a real breakdown of the engine. Thank you, I’m sure I’ll be able to use this knowledge as I get better at maintaining these engines. If you’re ever on the Mississippi Gulf Coast we’d love to take you out for a spin.

[@Jack-tx2ve]

jeep 4.0 had a little tick, it developed into a high pitched clatter. I decided a piston skirt had broken up and probably scored the bore. It still drove fine( didn't smoke and only clattered on the over run). I carried on driving it then one day it threw the little end through the block. I drove it two more miles home. I opened the bonnet and found most of a piston sitting next to the engine mount on the left hand side. It always amazes me what an engine will put up with and still run.

[@thelegendarysandwich4049]

The 4.0 doesn't die easy. You'd think it was a diesel.

[@Jack-tx2ve]

@bustin cheeks U.K

[@Jack-tx2ve]

@bustin cheeks wiltshire

[@tomschweikert9537]

i did that with my studebaker lark knocking like crazy, throwing trans from drive to reverse

[@tomschweikert9537]

@@thelegendarysandwich4049 supposed to be a mercedes engine 4.0 jeep

[@lifehappens2370]

You, sir, are very good at what you do! I’m a 73 year-old non-mechanic but I know clear thinking and really good, articulate communication skills when I hear/see them. I’ve long wondered about the inner workings of two-stroke engines, diesel and gasoline, and this video goes a long way toward fulfilling my education. I’m definitely going to “follow” you here on KZbin.

[@friguy4444]

You can't save everything unless you have unlimited cash and unlimited space. And even then what needs to be saved or should be saved from rust or neglect etc probably won't include as a priority an engine that's needing a complete over haul of very expensive parts that there are probably dozens of in old army surplus or obsolete Oil Rig gear. There would more than likely be some in better shape. If Deboss says it's not in good shape I believe him! LOL. Thanks!

[@fredflintstone8048]

When I first saw you guys blow up the engine I was annoyed, but then after getting the bigger picture I understand.. Thanks for the breakdown on the engine. Well, done

[@tomschweikert9537]

lol he said breakdown

[@lordflash7160]

Nice dog

[@-tr0n]

Man you would have loved to see the 16v149s we used to run before "upgrading" to the MTU 4000. quad turbo, two blowers, dual intercoolers and about 4 square KMs of smoke when trying to start them at -30.

[@hiramrodriguez4323]

You must work in the oilfield too.

[@Beandiptheredneck]

These things are so cool. I got the privilege to see one torn down being rebuilt for a dozer a few years back and the guy showed me how it works and explained it. Totally inefficient but really cool. It’s too bad the next generation won’t get to see these old dinosaurs

[@adampavick7007]

3:45 If it's stuck at full rack, that is considered a runaway. It will go way beyond 2300 RPM since the governor won't be able to limit fuel delivery. There's a huge difference between "full throttle" and "full rack".

[@iwtommo]

It seems the giveaway for when it is a runaway (rather than just revving up beyond the governor) is when the black smoke is pouring out. It cant get any more air in so it goes rich as possible while still making power hence the rolling coal horror show.

[@Magnacharger07]

Spot on sir

[@hankclingingsmith8707]

And he did not give a correct explanations of combustion cycle.

[@jaydunbar7538]

@@hankclingingsmith8707 what was wrong with his explanation?

[@williamuskoski1385]

It would only stick on one cylinder

[@nicklacerte7134]

I know quite a bit about normal gasoline engines. Don't know much at all about detroit diesels. What a feat of engineering. They aren't fuel efficient but they designed it with such reliability. Thanks for the great video. I learned alot!

[@Hamsteren91]

It was super cool seeing v16 2stroke explained so well with all the small oddities and weird mechanics.👌

[@macontrack499]

We run 16 cyl 645 EMDs on out boats. And 8-71ta for a fire pump. Pretty fun watching this and just how simple these engines are.

[@AdamRud47]

If you guys care, these are essentially mini versions of prime movers for locomotives made by GM in the US and Canada. 16V-567s(567 CU. in displacement per cylinder) were used in early locomotives like a GP7 through the GP35. The 645 engines were used in EMD GP38, GP40 , All the way through the SD50. Fun fact: An SD45 had 20 cylinders and could produce 3600 HP at 950 rpm. They did not last long because crankshafts kept cracking at the joint. Most had options in 6, 8, 12, 16 and 20 cylinder options. (Edit)Here's an example: kzbin.info/www/bejne/eJ2yhq2YiNdmkKc

[@wildcoyote34]

you are right these are amazing old engines ,, I am a strong advocate for saving them but you did this one justice cause like you said it was pretty much junk you didn't just blow it up ,, you killed it the rest of the way ,, but then you used it as a learning experience i've been working on these for years and love their sound and have a very nice collection of engines i have saved from the scrap yard

[@thomasfortner6678]

I worked for a Detroit Diesel distributor back in the 1970s when the 16V71 was used in the oilfields and locomotives. They were amazing engines and the technology that Rich details in this video is just an introduction to all you could do with them. I worked on Series 53, 71 and 92, but didn't get to service the 149s, which were used in huge locomotives and transcontinental cargo ships. Red Adair, who was the oilfield firefighter that John Wayne's character was based on in the movie "The Hellfighters," used Detroit Diesels because they were comparatively light, produced quick torque, and parts were available everywhere in the world.

[@danbenson7587]

The 149s were used to drive frac pumps. (Not just 149’s, but turbo aftercooled 149s). The noise during a job could be felt. Sad the 2 strokes went, but these engines were complicated…lots of parts.

[@bosshoss69lee]

Selling some of those parts for like $50 plus shipping might make you a couple bucks, like the pistons look cool as hell and who knows what else would be cool to some people Thanks for blowing up junk and ripping it apart, really cool!

[@keithralfs5190]

As a Marine Engineer these 12v71, 12v92 & 12v149 were very popular in offshore supply boats - very powerful & robust - although the unit injectors in the cylinder head leaking fuel into the heads & crankcase & destroying the lube oil - they are easy to maintain as the cylinder/piston can be replaced as a single unit - the ones l ran were turbo charged & superchaged - technically "scavenge ports" - just the noise when running is exciting - they were designed to work hard - they suffered torsional problems when run at high load & low rpm (over torque)

[@papabits5721]

We ran 4 -16 cylinder compressors @ a mine I worked at . Fuel and oil every 4 hours. I just loved listening to them scream

[@oddzylinderfudgrub1951]

An engineering marvel in it's modular design. Full roller cams. Can run on just about any liquid that burns. The inline version came out in 1938, v configuration in the late 50's. These engines were built like aircraft engines of WW2, way ahead of their time (90 years ago!). The vocational school I went to had a 6-71, my group got to tear down, measure all critical areas and reassemble. Good times, in 1991.

[@nferraro222]

Thanks for the in-depth description of the engine design. When I was a military contractor, I saw one of these things at Ft. Riley, and had absolutely no idea what it was. All I could tell was it had 16 cylinders, and, as I recall, twin blowers being fed by twin turbos. For you military guys, it was one of the 8-wheeled articulating OshKosh monsters (HMVVC5X3WWXYZ who the hell knows - I couldn't remember half of the military acronyms).

[@samwagner31]

Just finished my first semester of diesel technology. A Detroit 6v92 was the first engine I took apart in class. Those engines are pretty cool, I’ve been fascinated with them since I laid hands on one.

[@actthree34]

These 2-cycle Detroits are legendary. I owned several back in the day: One boat with two 6V53s, running in opposite directions, and a bigger boat with a single 8-71. Say what you will, they were dead-nuts reliable. Climb onto to boat, pour in 2-3 gallons of crankcase oil and start them up. They weren't fast but they never failed. Yes, they leaked a little but back then, I'd never go to sea without that distinctive small of the Detroit exhaust.

[@chriswillmott462]

I used to build marinised 8V92 TAs, 750hp all day everyday to 10,000 hours

[@chriswillmott462]

@Daver G I said 10,000 HOURS not rpm. They peaked at 2200rpm

[@chriswillmott462]

@Daver G Well I've built several (over 50) marinised 8V92TA engines that went into commercial boats, usually trawlers. Never saw one for rebuild under 8.000hrs and that was only because it flared with props out of water in storm seas and over revved. I am happy to give you phone numbers to call owners and previous employers.

[@chriswillmott462]

@Daver G Yeah, I read what you wrote, and why would you idle a marine 8V92 at 1500???? And if you want to run an 8V92 to 3000 rpm, be my guest, I've seen one self destruct on the dyno at 2800 because someone didn't set the governor correctly.

[@chriswillmott462]

@Daver G WHEN did I EVER mention TTA??? DUH! TA Marinised! No blow off valve, keel cooled, do I need to go on? And trawlers run at 1500rpm when exactly?? Oh yeah, docking. Well I must be so lucky exceeding 435hp, fuck I've built 92TA's at 455hp industrial running irrigation pumps. Obviously I've been doing shit wrong for 35 years

[@toddallingham8462]

Brings back lots of memories, every piece of logging equipment on Vancouver island had a 2 stroke Detroit in it up till not that long ago. We rebuilt hundreds of these back in the 90’s at the diesel shop I worked at. We had exchange rebuilt 12v71’s sitting on a rack waiting to go in A Hayes HDX off highway logging truck or an 044 Madill yarder. Also the Allison 5960 off highway automatic transmission a great combination. Every time I hear one of these running it brings up lots o memories and emotions. 😢 I miss a lot of the old mechanical engines, Old Cummins 855’s and the KTA 19 as well with the PT fuel systems, most of the younger techs have probably never worked on them. The 2 stroke Detroit’s were fun to tune and set up, a real art to getting it right, still have all my tune up tools. Thanks for sharing this with us!!

[@Maus46]

I loved working on these (6v-53, 6v-53t and 6v-53ta) when I was in the army. Because of the demilitarization code, none of the engines are allowed to be reused or resold. I helped sadly to scrap over 35 rebuilt engines. Super reliable and super loud.

[@lookbehindyousuka]

@@transcendtient someone didn't watch the video. The engine could not have been resold, so instead of being condemned, it was used for fun and now is going to be parted out as it most likely was going to anyway.

[@kaulincurtis9665]

@@transcendtient it was in very poor shape anyway. The liners and pistons were badly scored, had terrible blowby.

[@Maus46]

It was sad to see but it’s a last hoora before it was being scrapped anyway. It was hard to watch, but at least it turn into a two stroke diesel lesson. Amazing engines, sad too see them slowly go.

[@Bread996]

@@lookbehindyousuka Clearly YOU didn't watch the video. It was for sale for 6 months, and nobody wanted it.

[@grabasandwich]

How have some guys bought military surplus 6V53 silvers at auction? The 53s sound the best to me. There's vids of a guy with one in a dragster.

[@tanglerd]

As an old Detroit Diesel mechanic, the funny saying was always that "the engine overspeeds, the mechanic runs away" The air box drain tubes become clogged and the fuel an oil residue becomes the fuel and that is what causes the overspeed! Fun video which brought back some old memories. Thanks

[@rogeryoung2049]

having built a few them when I worked at a Detroit Diesel dealership, they are an underrated engine. They can take a lot more abuse compared to the other engines. Nice marvel of engineering when you comprehend that 70% of the series 71 engine parts are interchangeable. Lots of fun to see a the engine go to full throttle and sem to scream. Had a few of those problems myself. Keep up the good work. FUN

[@FernandoHernandez-gi2ip]

Talk about learning a lot in 28 minutes got damn my teachers ain’t even that good but this video is amazing

[@Mikheno]

I'm one of those guys that was not too happy when you blew that thing up. You were on my list for a while (you know which list) but you recovered nicely with this clip. Now when you get your hands on those other Detroits..be careful not to break anything. We're watching you!

[@marty0715yt]

Super job. Really an informative explanation of a two stroke v16. Thanks for the vidjayo!

[@TheCanadianBubba]

Ran an old Mack water truck to feed helicopters in Kelowna for the 2008 fire season... it had a screamin' six in it . Probably the most fun we ever had on the fireground... ever !

[@mikem9099]

Back to the scrap yard where I could be turned into 45 Hondas lol

[@jaydunbar7538]

Nah, they don't use iron in Hondas only plastic and aluminum allowed.

[@teribear45]

Maybe 4 Ferrari's!

[@tebibyte2357]

I see why they blew it up, if it wasnt anything below a 12v71 then I would have did it as well, these engines way too big to put in ANYTHING useful.

[@Really2u]

You did the engine justice. I'm sure you got new people like myself. With the interest in engines themselves. This engine is more a piece of art. It doesn'tt seem like it could do much. Because of weight.. Forget about power. Love you

[@kimchipig]

This engine is practically mythical. A friend of mine swore up and down that the end of production was some great government conspiracy. These were great motors for any stationary application but on road was a different matter. I drove a Sceamin' Jimmy V-8 in a farm five ton when I was a kid. The powerband was like 200 rpm wide, making perfect shifting essential. As a sixteen year old, my shifting was far from perfect. The motor screamed like hell all day and burned way more fuel than a Cat diesel.

[@MikeMcGrath]

The end of production was the EPA. General Motor Diesel owned the patent for the unit injector. Cat, Cummin's IH all got heavy fines by the EPA for Rigging their engines to pass the emissions test. But polluting miserably during real world use. They sued GMD on the grounds they wouldn't fairly allow them to license the Unit Injector design because that design was the only way to meat emissions (in a four stroke design) and they won. Detroit was forced to license the design to them at a fair price. That gave way to in my opinion the best and most reliable on highway engines of all time. dd60 3406E and N14 and their small brothers.

[@dimedriver]

The 92's have been brought back into production via a military maintinace contract. The company that ended up with the IP is also doing factory rebuilds on most of the old 2 stroke engines.

[@bullettube9863]

I always wondered about these engines! I saw one many years ago that was used to pump water and was in the process of being replaced with electric motors at a pumping station. We used a lot of the v-8s in various trucks and equipment and they were powerful and reliable as long as you kept up with the preventive maintenance, such as regular oil and filter changes. The biggest problem we had was the reluctance to start in cold weather, so we didn't park them outside for long if we could help it.

[@WBOS72]

Thanks a ton for doing this Rich. You answered a lot of questions.

[@rlscustoms]

Working on 8V71’s was my first job out of technical school back in the day, was an awesome dirty experience, were terrible for emissions but what great performers they were and the sound they made my God

[@knifecollector54]

By far have become my favorite channel . Appreciate all the work you do to continue doing videos

[@damonhallsworth1948]

Mate.. this vid is so awesome. Part of me is devastated that you lunched this work of art, but the other part of me is so stoked that you did and then stripped it and showed us the beauty inside. If anything, you’ve given it one final show before it leave this world. Thank you and I’ve subscribed.

[@aaronshensky9385]

Man my work lunch break is over I was 3min into this video. Will continue to watch video after work. Cant wait....

[@ronm9933]

You ought to have your goddamn ass kicked for trying to purposely blow that fine old iron up...no respect...

[@zachsteele6964]

@@ronm9933 respect for what!

[@eddieb4227]

Great video! I have so many stories on the Detroit. They were designed for military use. These were for landing craft. That's why the earlier valve covers bolts were made to turn off by hand. There was a wrench that was tied to the engine to be able to go full fuel if a injector got stuck. This combination would take a week to set up the blocks and crank shafts to be true. After that it was rather fast to rebuild them. The 53 series were made to go to 3200 rpms. Use 100 injectors. Inter cooled and dual turbos turn it up to 3500 rpms. and they would scream!

[@Romans--bo7br]

Eddie b...... "They were designed for military use." No, they were Not "designed For" military use.... "Boss" Kettering wanted a compact, lightweight, high speed diesel that could be adapted to a wide variety of applications... a 1-71 was the "proof of concept" engine...a 4-71 was the first running prototype, and the 6-71 was the first production model. Yes, when WW2 came about, GM won the contract bidding for the "US war machine" and the GM Diesel Power engines (aka Detroit Diesel beginning in 1965), as well as the Cleveland Diesel Div. (later, EMD) engines were adapted to numerous land and Naval applications, but they were NOT designed specifically for "military use". As far as the rest of your expert diatribe is concerned.... it's really not worth addressing. How do I know that?... I studied & degree'd in Diesel Engine Design & Theory, specializing in 2 Cycle (Clarke), during the mid 1960's, and for three out of my four years, I studied directly under Mr. P. Nicholas... recently retired at that time, from R&D at GM Diesel (aka Detroit Diesel), and who was one of the three lead engineers who designed and developed the very first 2 cycle GM Diesel prototype engine... the aforementioned 4-71.. of which I have a framed 8"x 10" black & white photo of, along with "Boss" Kettering and P. Nicholas, taken just moments after it was fired up for the very first time... gifted to me by P. Nicholas himself, after I returned home the last time from VN. in 1970.

[@TheBooboo7112]

There is also a 3 cylinder. I have a 353t detroit in my 69 GMC pickup

[@2bitmarketanarchist337]

Pretty torquey for how small the displacement and low cylinder count is?

[@TheBooboo7112]

@@2bitmarketanarchist337 well they only make about 100 horsepower and about 200 lbs feet on a good day if you hold your tongue just right. It will pull about anything I put behind it but not very fast taking off, or going uphill. I'm running a sm465 4 speed trans with a ranger 3 overdrive unit before the trans. Itll toodle down a flat highway at 70 (75 if I'm mean to it) but the only hill it likes is downhill.

[@Talisman-tb6vw]

A friend of mine has a 2-53 hooked to a aircompressor.

[@TheBooboo7112]

@@Talisman-tb6vw I've been thinking about getting an old welding machine and hooking up and old two stroke

[@2bitmarketanarchist337]

@@TheBooboo7112 Does she get decent fuel economy unloaded at least?

[@outspokengenius]

My senior year in high school 2007-08 I took Industrial Diesel at the local vocational school. One of our first projects was the tear down and reassembly of a Diesel engine. We had several DT466's, a couple of Cummins 855's, a Cat 3406, Detroit series 60, cummins L10, and a few others. The best one in my opinion was a running 8v71. We had to pair off into groups of two for this project and unfortunately my partner was a real jackass. I fully intended to have that engine in the same condition when I was finished as when I started. We had all the service manuals and everything. He unfortunately saw it as a hunk of scrap metal as did my instructor and he went out of his way to destroy it as well as possible upon disassembly. Needless to say it went back together missing parts and badly damaged. It's nice to see a full video of how these 2 stroke diesels work. I always tried to explain it to people but with nothing to show them for reference.

[@keyboardplayerakas]

I drive a passenger ferry with 2 8v-71's in the bilges. Awesome engines however you have to be careful as if you go from ahead to astern too quickly you can cause the transmission to lock up and it will start to spin the engine backwards! It's not a pretty sight when exhaust is coming out the blower

[@gcrauwels941]

Good thing you didn't have underwater exhaust. I had a boat do that with 8V92Ns a couple of times before they went dry stack.

[@keyboardplayerakas]

Just above the waterline, but could possible suck water up in a chop

[@scottderuyter6627]

Haven’t seen the inside of one of them in 30 years! Good to see it being used for destructive purposes! Love it!!

[@mromatic17]

this is one of the most well engineered engines i've ever seen! It looks like the engineers and mechanics actually communicated I'm shocked!

[@TriniRogue]

To be honest i was butt hurt by the first video too, but you are right that even after a rebuild what would you even do with it.......all in all i learned something and i love thos detroit diesels so awesome video and thank you.

[@nathanthomasstickney8123]

Butt hurt.i was for sure.i kept saying you fkin.idiots..

[@nathanthomasstickney8123]

✌🤘

[@bradhaines3142]

he had a good point, when you can get something better in every way possible, why stick to old stuff? nostalgia isnt worth as much when you cant find parts anymore, and you lose your ass in costs to run it

[@paulhudson231]

The 71 and 92 series used many common parts across the range. For example, the v8 used the same cylinder head as the inline 4. The inline versions were available with the exhaust on either side. All motors were available in reverse rotation. Pretty amazing that the basic design was in production for about 50 years.

[@svtirefire]

2:40 "if you've ever worked on a air cooled Deutz..." Of course I have, who hasn't! lol

[@tomthompson7400]

i have lol

[@jlo13800]

Deutz, Stihl, Sachs and Hatz were some badass German 2 stroke diesel. Look up Holder tractors they had 500 or 600 diesels on these. I one saw a hatz 2 stroke diesel on s dirt stomper that hand crank start. It’s had a separate oil tank on the side also. You had to make sure the tank cap was tight or when she goes bouncing you have a mess.

[@AdriaanVerburg]

I don't think that Deutz was a 2 stroke.

[@michaelszczys8316]

In 1976 I visited some relatives on a big farm in North Dakota and while I didn’t have much to chit-chat with the young boys in the family one of them remarked about the Detroit Diesel cap I had on. I told them we lived just down the road from Diesels and some of my friends worked there. Then I was like something special. I think I left him my hat.

[@kylec4858]

By far the best youtube channel 🤘🏻 keep it up man!

[@rp1645]

I have a 353 and a 871 in equipment I own. I love watching you explaining the big brother of my 2. Thank you so much.

[@SomervilleMetalWorks]

Great video mate really interesting to see how they work. I love how back in the day these engine design are so well thought out design and robust enough to run with parts missing.

[@truthliveshere831]

Quick note the valve springs are supposed to rotate. You can find a slow motion video of valve springs in action revving at high rpm on KZbin. I learned a lot about two strokes in this video thanks for sharing the tear down 🙏🏼

[@RzAn8]

I was expecting you to pull a cat out of the block when you retrieved the 2nd part of the piston 🙀

[@DEBOSSGARAGE]

That would be pretty cruel outtakes of me shoving a cat down the hole against her will. Next scene has me all scratched up and bleeding....

[@RzAn8]

@@DEBOSSGARAGE Well was expecting 1 of those adventures and curious "kittens" not mom you've shoved down there

[@jeffanderson7256]

rzan8 😂😂😂😂😂😂

[@colbydillard4581]

When i was 10 or 11 a curious kitten thought it'd be fun to chill in the engine bay of my mom's car 😅. Got ate by either the belt or the fan i don't remember which just remember the mess

[@jeffanderson7256]

Colby Dillard that’s nice 🙂

[@jeffflanagan2814]

Very Cool! Brings back memories! I helped rebuild a 12v71 when I was 17 on New Years Day, 200 feet in the air on a Favco 1900 tower crane at the Kimmel Center in Philadelphia. I will never forget that day! I had went to a new years party the night before and drank too much. Got a call that I HAD to go in a 3am. It was a rough day! It snowed pretty good and even had to pull the cylinder heads all the way up by hand with a well wheel.

[@slayerofgods420]

Great video's about this engine! The engineering that went into this power-plant is unreal!

[@gilbertfranklin1537]

You, sir, are an enigma. Listening to you talk about this Detroit 2-cycle I would swear that you have been working on them all your life. I realize that you and this channel have a massive following of adoring worshipers, but I did not realize that you were a mechanical genius. Very impressive explanation of the old engine technology - a rare and unique machine that has its own legion of admirers and detractors also. This was both educational and entertaining, so thank you very much.. 😁👍

[@iwtommo]

Say thanks to VR recycling from me for letting you get up to such insanity, this was a riot. Seeing as they can be bolted together, could you buy all three 16 cys from VR when they arrive and make a 48 cylinder?! xD

[@rayg9069]

The factory made a V24 71 series, that was two V12 blocks together, the only issue would be the crankshafts

[@larrygall5831]

Whether a crank exists that could handle the middle section, IDK. The cams would be another problem since they're now so long that there's a risk of breaking. The blower in the middle would also need to be driven somehow. The only way to accomplish this is to add a gear set on one of the ends of the center, and this would require yet another section between 2 of the blocks. I'd like to see one run though. Has all the makings of a sub 2000 RPM irrigation pump or maybe a generator. Nat. gas would be viable, but diesel.. not so much.

[@rayg9069]

@@larrygall5831 GM did build a 20V149 which was three blocks bolted up, it had a V8 block in the middle with a V6 bolted to each end, not sure how the cam drives were arranged they may have been unique long cams for that model, I think the crankshaft was a one piece super long unit due to the torsion forces. I remember they had dual harmonic vibration dampers bolted face to face at the accessory end.

[@iwtommo]

​@@larrygall5831 Then of course after youve built this beast of a v24 many thousand hp 10ton engine what on earth do you put it in? Make a semi where the trailer pushes the truck!? "honey i was overtaken yesterday by a semi doing 200 and my ears havent stopped ringing since"

[@mfree80286]

@@rayg9069 yeah, harmonics are going to start being the major issue with engines that long. Cranks and cams twisting like torsion springs back and forth until they crack or twist, etc. I guess a 2 stroke wouldn't be as bad since there's a firing event every 360 and the pulses are closer, but unless they're overlapping firing orders there's that moment when a "far" piston is on it's fire stroke and twisting that multiple-foot long crank and then.... well, not. Also just hit me that the way this thing is set up you're going to have multiple cylinders firing at exactly the same time, probably why those dead cylinders didn't seem to show up when this one was running earlier, they had others helping with their work.

[@marshie1337]

Just reliable solid content, upload after upload. Rich, you're a legend. Thanks to everyone behind the scenes that makes this channel happen. One of the few I've actively followed over the years.

[@joshuahawkins547]

Working on the marine side of Detroit's.(6v92's) it pains me to see this beast go but that was a FULL SEND and it was great

[@chriswillmott462]

I miss making stupid hp on marine Detroits, they just made it so easily. Apparently they're not emissions compliant. whatever the fuck that means?? When are we going to make volcanoes emissions compliant??

[@joshuahawkins547]

@@chriswillmott462 if you military those don't really apply to their boats 😂😂

[@chriswillmott462]

@@joshuahawkins547 Huh?? Did I mention military spec anywhere??

[@joshuahawkins547]

@@chriswillmott462 no 😂 thats just some of the old engines i use to work on

[@chriswillmott462]

@@joshuahawkins547 Yeah lots of black smoke and low hours

[@andrewx11]

I build the fuel injectors that go into this engine. It's pretty cool to actually see them installed as well as how the rest of the engine comes apart. Judging from what i've seen from the core injectors, these engines run for a ridiculously long time and are not very sensitive compared to the newer stuff. Prying on them like done around 16:00 minutes in, is a great way to make them seize up. If they are getting stuck like that, they are on the way out for sure. The internal plunger gets scored and shortly gets stuck

[@Robert8455]

Great come back with this informative video. I was a little sad to see it get blown and figured even as bad shape as it was it would probably have run for another 50 years with only a little TLC given. But its massive so I get you don't really have an application and it would have gotten destroyed anyways, so I'm good with that awesome send off. Really amazing amount of design engineering with an engine family that we will likely never see again. Thanks for the info on the blowers too, I always knew the hot rodder of yesteryear ran 671 or 871 blowers and I was curious what was different about their industrial engine versions.

[@danieldavenport29er]

You’re awesome. I have a 1964 Detroit diesel 271 generator that is still running today. Don’t know nothing about it watching your videos to learn more about the Detroit diesel

[@acoow]

I learned the 53 series Detroit engine way back in the early 80's. Maybe my memory is wrong, but I think those injectors are easy to recondition. You will need a FLAT surface and some lapping compound to resurface the innards. I remember the injector rack on the 53 series having two screws for the adjustment instead of the one screw with a locking nut. Am I remembering that wrong? Those two strokes engine are real workhorses. It's too bad they couldn't get them to run clean enough to get them on the road.

[@kedwa30]

It's industry shmear about getting engines to run clean when really they are getting anything too reliable off the road. They are using the whole "greenhouse effect" malarchy to force the population to accept overly complicated disposable engines. You can put on an after burner to reduce any exhaust to pure elements if clean exhaust is the true concern. If you want to improve efficiency then you could run the hot exhaust over a few Stirling engines. To just take their word that it couldn't be done is both naive and obtuse. They have ulterior motives. Compare the increased cost in fuel over ten years to the cost of buying a new engine every ten years to ensure reliability... When your house is on fire, what engine would you want in the fire truck? The one that gets it there... who really cares about how fuel efficient an ambulance is? If a trucker can't deliver a load on time because the engine won't start then he doesn't get paid. Lot's of real world scenarios where reliability is more important than fuel economy. I think this style of engine as part of a hybrid electric vehicle would be both fuel efficient and last much longer than fancy GDI that uses tiny injectors that need to be replaced when they go bad.

[@ffwest12]

You could add turbos to the 71 series as well. In fact I have seen 6-71 with blowers and dual turbos. The 53-71-92 is the cubic inches per cylinder. I have worked with 16-V-278 A Detroits as well. The set-up of the timing gears will allow the engine to run in either direction. I believe the 16 v 71 had a single common crankshaft which meant you would need to make sure the two blocks were bolted together precisely.

[@Braxton1118]

You should Build a table out of the block that threw a rod

[@optiquest86]

That'd make an awesome talking piece! :D

[@theinflatabletransportatio4658]

Good idea

[@tomschweikert9537]

brace your floorboards

[@mrwdpkr5851]

That flywheel would make a decent anvil .

[@eddieb4227]

A lot of the 71's had turbos and inter coolers. The non turboed 71's were 318 horse power and the single turbo were 350 horse. The wrist pin was sealed also.

[@justindegraffenreid5813]

If the engine started to run backwards it wouldn't have oil pressure right?

[@chaytonruijsenaars3971]

right cause oil pumps dont pump backwards

[@chaytonruijsenaars3971]

not to the bearings anyways

[@Masterkill45588]

No they do it's meant to run either way

[@usethenoodle]

When I was a Rookie city fireman back in the late 70's we had a fire apparatus that was Engine 8, a1968 American La France 1500 GPM pumper- had a Detroit 8V71 Diesel in it. It had very little muffling. It seemed like a straight pipe. It also had a stick trans which is a thing of the past now since the new breed, most of which never learned how to drive a stick, let alone how to double clutch. That rig was fun to drive since it was loud as hell when you rapped it out between gears. Couple that with the siren and air horn and you could really get them jumping for cover. I'm retired now after 36 years in the FD and it was my most memorable rig. Detroit must have the corner on the fire apparatus market as that's about the only diesels I remember. There may have been a couple other brands but the Detroit was king.

[@mataiterapreha]

Man I'm glad I clicked on a video that said screaming Jimmy on it lol. Hello from New Zealand!

[@jeffsnider3588]

When Detroits were allowed to sit too long, the fuel would jell and make sticky injectors. Due to mechanical governor, all of these mechanical engines were at full throttle when shut down. Shutting off the fuel caused the RPM to drop below minimum setting which opens the throttle. When they are started after sitting the injectors are stuck at full throttle. If cranking a Detroit that has been sitting, remove valve covers and check the rack for free movement just like shown in this video before attempting to start. When the engine starts and RPM passes the governor setting the rack will move to throttle back. The 71 series were dry sleeve, the 53 and 95 series were wet, not sure about 110 series or the 149 series, but these engines were a well thought out design for the time period.

[@russellmooneyham3334]

Jeff Snider. I'm attempting to get a 6-71 reverse rotation bus running. 1951. Was running perfectly 10 years when I parked it. It will start, but won't stay running (ether only). Guess I should pull that valve cover and check this out

[@carlwilliams8354]

I think one of the best sounding DD in trucks was a Silver Series 8V92 turbo. They really had a lower sounding pitch but still barked. They made good hp but of course the torque was not equal to the Cats of the same era.

[@aaronbays4]

Great video. These old 2 stroke detroits are stone simple, which makes sense considering they were introduced in the late 1930's. I know these engines helped win the war, not sure what tanks and ground equipment ran Detroit diesels, but I know a lot of the ships of that era used them to power generators, pumps and other various equipment.

[@isbcornbinder]

There is no point is saving that engine. Thanks for the look back. My employer had 1500 vehicles with the Detroits. Everything they have now is Cummins. There are thousands of these engines I junk yards. I do not like the engine, but, I like the sound of them.

[@DigitalJeremy]

You're spot on, the roar of that thing is just incredible...usually I don't care what an engine sounds like, but there are exceptions...1971 Plymouth Superbird, Lexus LFA, and now a 16 cyl 2 stroke diesel - man that diesel just sounds ANGRY...so kool

[@kimchipig]

They are too heavy on fuel to be used any longer.

[@glenndennis6801]

Worked on these for years, those injectors are not as durable as you make out. They are indeed a fuel pump and need to be treated as such. The. Rod should move freely under it own weight. And be clean any dirty fuel can cause problems. The most complicated part of a tune up is getting "bounce" on all the injectors while taking all the play out of the rack rods.

[@AntonioClaudioMichael]

Love the amount of knowledge your giving on this cool old motor

[@chriswillmott462]

The amount of what knowledge?? He has no idea

[@alex_inside]

@@chriswillmott462 For me it sounds good.

[@frankmcgorman962]

Clean up the broken bits (piston, rod, sleeve, etc.) and weld them together as an art project... :) Thanks for showing us the aftermath and inside tech details. Love this kind of stuff. Cheers, and stay warm!

[@eformance]

For those watching at home, those are 8-71 blowers...

[@cmsracing]

8(V) -71,there is a difference.

[@drtorch58]

There is no in line 8- 71

[@drtorch58]

bustin cheeks well cams racing said 8 v 71, there is a difference , the other choice other than v is in line such as the difference between a 6v 71 and an in line 6-71 , won't interchange I was just stating there is no in line 8- 71 (unless u make your own) By the way a 12 v 71 uses 2 blowers linked together ,FYI Just saying🤓

[@aaronmackey2664]

Scavenger ports are what they're called on the cylinder sleeve. I used to service this engine on a US NAVY ship, USS FORD FFG-54, to be later replaced with Cat engines. Former EN USN, thanks for the content !

[@robc3056]

Sweet !! you can read all the books in the world an explanation with components..so much easier !! nice vid my mate has never heard of a 2 stroke diesel..

[@Brock_Landers]

Rich, thank you so much for posting Screaming Jimmy with this beautiful sounding Detroit V16 2 stroke! I remember back in the day when we used to hear them all over the place in buses and trucks. I've been waiting for something fun to watch and DeBoss is always where it's at. Thanks again Rich!

[@leejamestheliar2085]

It's better to blow up Cuz rust never sleeps Great video, cool engine. Great information! G'day

[@brennonharmon9548]

Im a diesel tech for a kenworth dealer and you’re the best diesel related channel out there!

[@paid2getdirty1]

Great video as usual Rich. All you need to find now is a Napier Deltic 😉

[@DionysiosA76]

Another way to pop liners out is to use a 3” 3/8” extension in the intake port and roll the engine over. The piston will pop even the nastiest liner.

[@bababooey7576]

What application would this beast have been in? Freaking great video!! My favourite fellow Canadian mechanic KZbinr. Thanks for being so awesome and Canadian!!!

[@DEBOSSGARAGE]

Generators and boats. Sometimes a Generator on a boat

[@bababooey7576]

@@DEBOSSGARAGE Insane. What ingenious engine Detroits are. I miss them in the old GMC Fishbowl buses. Thank you for the rundown the inner workings of the engine and thank you for your really great videos and channel. So glad you're Canadian; you do us proud!

[@jsomething2]

we have one in a jet engine air start. it's still in service. works fine. it's the twin turbo one though.

[@dartskipper3170]

@@DEBOSSGARAGE When I was in Florida in 1975, I saw a sport fishing cruiser with two of these in its engine room. There wasn't a lot of room for anything else.

[@derekcamp9764]

I haven't even finished watching yet but these 2 videos are the best I've seen in a long time.