So this engine... Would it be more torque-y or more on the power side of things... Cause obviously a diesel engine is better for torque than power but a 2 stroke is leaning more towards better power than torque due to higher revs...??
@burningtheangel Youre mostly correct. Many think two stroke engines spin faster then 4-stroke engines, in most cases it is true (for gas engines), but in this case a Detroit two stroke diesel does normally not. It is possible and safe to adjust the governor so it can spin up to 3-3500rpm for short periods of time, but max continious rpm is usually rated at 2300 or 2100. So in most cases it turns slower than an equally sized four stroke diesel engine.
@Da9eI Better for torque then? I've not really researched much into 2 stroke as they're most common in 50cc mopeds and generally very basic. Also what would this engine be used for? Sorry if you've been asked all this before, there are a few too many comments for me to read through :P
@burningtheangel The two stroke diesel is perfect for any application that require constant speed, like a generator or marine propulsion. But back "in the day" they were allso used in road transport (i.e buses, trucks), and large cars. Theese diesels are quite different compared to a gas two stroke, since they have full pressure oil lube, cam and valves. The design is still beeing used in heavy\large applications like ships and lokomotive. Yep, there are lots of comments here!
@burningtheangel So, a common thing for a two stroke, is that you have to keep the revs high to "harvest" the most power, as they are quite weak at lower rpm. Im not really sure the power vs rpm curve of the two stroke diesel, but I would imagine it is quite linear compared to a four stroke diesel. The other thing about two stroke diesel, is that they have quick "rpm acceleration".
@Da9eI Ahh cool. Well thanks for all the info! I might read up more on some of this stuff... I'm just a car mechanic so I only ever deal with 4 stroke. Would like to get into agriculatural and HGV mechanics just to see a bit more diversity in what I work on. Or a motorbike mechanic... Then i'd get loads of 2 stroke mopeds too! :P
@burningtheangel the 2 stroke is not reeving higher in fact most 2 strokes do not rev as high as there 4stroke brothers but because it is a power stroke every time rather then every other time it sounds faster but the crank rpm is slower
and many 2stroks have grater torque then 4stroks per cc
and smaller cid 2stroke will have more torque then a larger cid 4stroke were the confusion is how long the torque curve is
@solja239 The model mumber of the DD's say how many cylinders and volume of each cylinder in cubic inches, so a 8v71 is 8x71=568ci or 9.3L. A 6-71 is 7L. I do not remember the hp of this particular engine, but the N/A-ed (blower only is considered N/A) usually ranges from 310 to 340 depending on application and accesories. Looking at other peoples comments it seem like it was pretty common at around 380 hp for turbo 8v71's. But with lots of room for more if you can keep it cooled well (marine).
@Da9eI oooo, so not to be offensive or anything is this wouldnt be considered a highly effecient motor then right? or does this motor have a higher torque output versus a 4 stroke gas?
@solja239 Its still a high efficient diesel engine, but it depends on what it is used for. The 2-stroke engine (in general) does have a slightly shorter power stroke than a 4stroke engine, thus reduces its torque a bit. A diesel still will mostly allways have more torque than a gas engine. Just so you know, Im more of the mechanical and electical dude, thus this is acutally a little bit outside my field of knowledge... :P They say this 8v71tt had 525 hp. and there were two of them.
@solja239 a 2 stroke anything will have more torque than anything 4 stroke the same size. 2 stroke engines produce a powerstroke every turn of the crankshaft. 4 strokes its every other turn of the crankshaft.
@drkmanracer302 Not allways true, a diesel 2-stroke (and most gas) has a smaller and shorter bang because of the ports at the bottom of the cyllinder. Combustion has to be complete before valves\ports open\uncovers or they'll burn out valves\ports\rings faster.
@Da9eI You are close but no cigar just yet. All 2stokes have at least intake ports at the bottom, some have exhaust ports as well. Most externally charged engines lilke the detroit have exhast valves to scavenge but a few have ports, but a sealed crankcase, they depend on a supercharger as well. The Deltahawk is a v4 2stroke aircraft engine that is totally ported with a sealed crankcase and full pressure bottom end. I love detroits, they powerful, simple and easy to repair.
@drkmanracer302 i thought it was the other way around, diesels have 6 stroke versus gas 4 the more stroke the higher torque, i mean even down to dirt bikes the 2 stokes never had any bottom end
@drkmanracer302 not true 2 strokes are more rpm than torque the 4 was designed for torque not rpm its all in the gearing to make a 2 stroke have more torque the 2 strokes are capapble of 2x the rpms as of a 4 stroke diesel (will only turn maybe 4500 rpm max safely)
@drkmanracer302 Not always. Often a gas or diesel 4 stroke will have much more torque than a two-stroke. Example dirtbikes, think of a 250 2 stroke just rips screamin at like 15,000 RPM, and think of that low end oomph and constant power you feel out of the same bike except 4-stroke, thats the low end torque and broad powerband that most consumer 4 strokes offer. 2 strokes generate alot of power but only in a certain area of RPM, which i actually prefer in a dirt bike... just sayin though.
@drkmanracer302 wrong there... a 2 stroke petrol makes way less torque size for size then a petrol 4 stroke. a 2 stroke will make higher hp size for size any day of the week
@TheTwoStrokePower this is so wrong lets look a dirt bike a yz250 2t compared to a yz250f
yz250 2t 48.8 horsepower and at 8800 rpm and 30.6 foot-pounds
yz250f With 35.33 horsepower and 18.76 lb-ft of torque,at 13.000 rpm
andthe same is true in the big engine world for the most part
the misconception is in how broad the torque curve is most of the time the 4 stroke have to rev much higher to come close to the power and torque of the 2 t brothers so the torque the 4t has is strung out longer
@lexpee Its a Diesel engine dumbass, you cant compare it with a moped engine or gasoline two stroke, its like comparing the moon to the sun. A diesel engine is direct injected, fuel never was or will never be inside the crank-case, which instead is filled with straight 40 weight oil. Like NBSV1 said, the valves are ONLY for exhaust, the intake is near the bottom of the cyllinder where pressurized air is beeing feed from a blower\superchager. In my fav. list, two vids describe how diesels work
@lexpee He explains it in the description. It has exhuast valves only. At some point of the piston going down the exhaust valves open. Then at the bottom of the travel the piston uncovers the intake holes and the rush of incoming air helps force out the rest of the exhaust. Then the piston goes up for the compression stroke. It's a more modern and efficient take on a 2 stroke.
@nathannickel1 I think you misunderstand the meaning "2-stroke", which 98.5% of the world population do. The definition of "two\2-stroke" does NOT say wether the engine has valves, carburettor, injection or not, but rather how many strokes the piston has to take before new air\fuel enters the cylinder. The modern type two stroke diesel engine have valves, are direct injected, have full pressure oil lubrication and are uniflow scavenged. Understand? Good.
@Angelus12308 Apparently I misscalculated, seems like it might be more then. There are many types of two stroke diesel\semidiesel\oil engines that dont have valves, but saying a two stroke doesnt have valves is wrong.
@Angelus12308 Its just that I get a lot of comments and pm's saying "two strokes dont have valves", Im suprised I even reply to them. Theese might be the last ones though, kinda getting tired of it :P You seem to be one of the smarter people writing in here :)
@MrMrcrain If its oil consumption is high you're using the wrong oil viscosity, or has very bad maintenance. Theese engines does not requre alot of love, just a little bit is enough and they'll last forever. I've seen some examples of oil Leaks, but thats another story!
I wonder how well it would run if you cut down the tops of the pistons say about .050 and replaced the injectors with gasoline injectors and put a crank trigger MSD system on it with spark plugs instead off glow plugs. It would be cheaper to run too.
Do you think that's possible ? Gasoline conversion.
@mrnewagemotor I have actually thought of this several times, not just a conversion of a DD engine, but allso an engine purely made for gasoline use. Imagine a two stroke, full pressure oil lubrication, valves, supercharger and direct injection! It Must be good for something! The Volkswagen TSI engine is probably the closest, but its four-stroke. To do this conversion with the DD engine, you would have to do something drastically to the heads since they dont have glow plugs. Mybe it could work.
@mrnewagemotor Two stroke Detroit engines have been offered from the factory with spark ignition for many years. The fuel of choice for the spark ignition engines is usually natural gas, as gasoline is generally too expensive for industrial applications. Check with your local Detroit Diesel distributor for more information on spark ignition engines.
these kinda detroits have balls cus of the twins on the side or what?. i learned how to drive on a concrete mixer with one of these dont know what size but same style. now im all 4 cat engines but shit id change 4 one of these old green monsters anyday not the new ones i dont like the lack of power withpout pushin em not saying their weak cus theyve out pulled me on hills
@sackcheck Im not really sure, he's the expert on theese engines. But I belive he's checking that all injectors are firing by holding them down, you should hear if there is something wrong (no change in sound means not working). I think you can see what cyllinder that is producing the extra smoke. In my oppinion the smoke disappears when he tests the cylinder no2 from the left, on 1:24 .
@magnum9987 Because it is a diesel engine, not a gasoline weedwacker engine. Just read the other comments, you're not the first one who asks this question.
Very cool! Love 2 stroke diesels. Incidentally what were they working on? I noticed that while running there appeared to be incomplete combustion from the right cylinder banks and hence u could see the white smoke from the right exhaust manifold.
I had a 4-53T in a Suburban and loved it. It got great mileage and was smooth even though it was just a four cylinder---the truck would have been a hoot with an 8-53!
@JGMagoo That might be true, some of the tubes and pipes for the exhaust\air looked rather "home made" in some areas. If I remember correctly the intercooler might also be custom. (the box thing between the turbos)
there is usually no rpm difference between the 2 stroke diesel and the 4 stroke ones. The 2 strokes just sound faster because they fire the cylinders twice as much
@Draco1180 On this vid, its only idling at about 600rpm. At startup it might have been up to around 800 rpm. Maximum on this particular engine is 2300, but would usually have a cruise speed of 1800-2000 rpm
Interesting. Are these used on plant/construction machinery, generators, ?? I've always thought that 4-strokes were more efficient due to cleaner air burning, am I right (ie, less burnt gas left in the mix upon the following combustion), but then maybe there's some unburnt fuel too which can burn, a plus..? What;s the reason for it being 2-stroke, higher power output for engine mass? I don't know these motors, just curious - can anyone help me.
They were extremely popular in the US from about 1939 to about 1975. They were used extensively by the US Armed Forces in trucks, boats, generators, and stationary applications. Their downfall was fuel economy, emissions and noise. One of their great advantages was they could be made to rotate either direction and they have tremendous interchangeabillity of parts between 1-2-3-4-6-8-12 and 16-cyl versions. ALL are supercharged, Some later ones were supercharged AND turbocharged.
What the hell are those little valve train like things on the cylinder head? I thought this a 2 stroke. Are those diesel injectors powered by cams like what Volkswagen uses for its direct injection diesels?
i would think that those are in fact injectors. since diesel motors run off compression. you need something to be able to shoot fuel and oil injection in that case into the cylinder. they are probable timed with a gear drive just like any other 4stroke diesel is with the crank gear and the injection pump.
It is a 2 stroke, but on a Detroit, there are slots toward the bottom of the sleeve. When the piston covers and un-covers those slots it acts like the intake valve. The "little valve train things" are the EXHAUST valves and injectors. Detroits come with either a 2 or 4 valve head, and they all have 3 rocker arms. The 2 outside rockers are dedicated to the Exhaust valves, and the center rocker in each group is for the injectors. Hope this helps.
Yeah I looked the specs up online. What I don't understand is why more diesels aren't 2 stroke. Since raw fuel isn't ejected with the exhaust like a 2 stroke there is no reason for an increase in pollutants. A modern direct injection 2 stroke diesel should not pollute more than a 4 stroke. So what gives? With double the combustion you get double the power (theoretically of course, friction and thermodynamic loses not withstanding).
I didn't mention GMC blowers at all. GMC blowers on Detroit engines are "Roots Blowers". Many companies have made, and do make Roots blowers for all sorts of things. A Roots blower ( GMC origin or otherwise) on a gasoline engine supercharges, but a roots blower on a 2-stroke diesel SCAVENGES. Same machine, different function. Diesel engines often run massive amounts of excess air, Gasoline engines run roughly stoichiometric. But what would I know? I just design the fucking things.
Roots blower is a "positive displacement" machine..it has no internal compression, so is a "blower" and not a compressor. On a 2-stroke, the blower scavenges the cylinder, clears it of exhaust gas...in place of a 4-strokes exhaust stroke. A supercharger increases the charge density a spark ignition engine, and does nothing for scavenge, unless it is a direct injection SI engine...
i was wondering on like a blown car how it has like the blower on top is the supercharger the blower or is the air grabber on top of the supercharger considered the blower
Its difficult to understand what you're trying to say here, but I assume you are trying to understand the difference on a blower and a supercharger, right? As far as I know, there are none. The blower on theese engines does not provide any boost. But a supercharger on a four stroke engine does. Good enough? If not, try looking trough the other comments, you should find many answers there.
I know :) Its just like trying to explain something to my mom, she doesn't understand, even though I try to tell it as easy as I can. Like, how to stop a snow-blower, you switch the big red button to "0". She turned the choke on instad, so the engine ran with full choke until it ran out of fuel! (little off topic? but I think you get the idea, there are lots of stupid people around that dont know what google is!)
Blower/supercharger-same thing. They pressurize the intake. On a 2 stroke diesel, it is used to expel the exhaust gasses and in the same action, provide the intake charge. As the piston nears TDC, the injector sprays the diesel in.
On a 4 stroke gas, again it pressurizes the intake, but its purpose to allow for a denser air/fuel mixture. More air/fuel equals a more powerful firing.
Yes, yes and yes. Try reading the other comments... However it isn't actually called supercharged, event though it has a supercharger. Its more like a blower, it only enough to replace the exhaust in the cyllinder with fresh air with no extra compression. Thats why the turbos get in the picture, they provide additional boost.
now becaus ethis is differnt then a conventional gasoline 2 stroke does this have oil in the crankcase or does it use an oil diesel mixture or even both thanks for any insight
it has an oil sump like a 4 stroke but it aint got intake valves, there are ports in the cylinder and the supercharger blows the air to purge the cylinder, but it runs like a 2 stroke
@BR4DL3YY Kinda looks like it might be out of a boat... I'm no expert tho. I do however want to know how I can get one and try jam it into my little L300 van for some fun!!
2 stroke engines would rather have valves, but the whole advantage of a 2 stroke is you can skip those parts. This think must sound like a cement mixer full of broken glass.
You better go tell that to the Detroit Diesel Corporation. They built MILLIONS of these 2 stroke diesels and they all had exhaust valves (except for the obscure 51 series).
Why are there so many retards posting this crap to almost every 2 stroke Detroit vid?? Do some research before you come in here and make yourself look like an idiot!
No, a two stroke diesel has oil in the sump like any four stroke engine. A diesel two stroke is very different to two stroke gas engine since it is direct injected, fuel never enter the crank\sump like it does on a gas two stroke engine.
instead of using crank case to scavenge, modern 2 stroke diesels use blowers or turbos or both, if only turbo its mechanically driven during start up.
only 2 stroke diesels used crank case compression like petrol engines, the lubrication was not pre-mix though, they were wierd.
google old engines or old hot bulb engines, has some good stuff, including a gardner 2 stroke with inlet/transfer ports all round cylinder with exhaust ports above, also all way round!
First off this is a 8V-92 since it has the front vibration dampner. And uniflow 2 stroke diesels have 4 exhaust valves per cylinder for those of you that are to ignorant to know.
Im sure its a 71 series detroit diesel engine, it was stamped 71 series on the head cover vents. And most marine diesels have different engine mounts compared to on-road engines.
Some ways to tell if it is a 92 series over a 71 series (head cover vents can be the same for a 71 and 92 series). One is the forementioned big vibration dampner on the front of the engine (flywheel looking). Then is the exhaust valves-if they are positioned in a square pattern then it is a 71. If lower are wider then upper then 92. Also on the front of the block in front of the head would be a cast 92. Check it out
the genius thing is that the exhaust valves close whilst the inlet ports r still open so u can actually pressure charge them more without blowing extra air out of exhaust, some loop scavenge diesels had extra rows of one way valve controlled inlets that were higher that exhaust port for this same reaon, they only passed air when ex was closed, alco actually made a marine 2 stroke diesel like this u know.
The 51-series Detroit had exhaust ports instead of valves. I guess it has a similar design of a gas two-stroke engine, except its still oil in the crank. I have little or no knowledge about the 51 series, but I do belive both intake and exhaust ports were at bottom of cyllinder, uncovering\covering by the piston. This design will not remove all exhaust from cylinder, and some will remain before next cycle begins. Allso the 51 series werent very powerful. 51 series are very rare nowdays.
no, all detroits were uniflow with overhead exhaust valves, they r not loop scavenge, in fact u can see the rockers on this one. all detroits used the same layout.
You might be right, I have never seen a 51 series detroit. The info I got was from wikipedia, and in a text there they mentioned that the 51 series is a simplified 53 series engine with no valves.
nope the 51 series did not have exhaust valves. you may have seen something that looked like valves opening and closing but it was just the rocker for the fuel injector
have u any idea how the ports r layed out on the 51 series?
r the exhaust ports above the inlets like the MAN engines of old where air goes through inlet curves round, reflects off opposite side of cylinder then loops out of exhaust above inlets/ shoots exhaust gasses out of exhaust above inlet or are the exhaust ports on opposite side of cylinder to inlet?
It looks like it may have exhaust manifold on same side as inlet/blower so having ex port above inlet but not sure.
they made a loop scavenge with ex. ports opposite inlets, the inlets all had reed valves, I think they may have been higher than exhaust port so that they could still charge cylinder after ex. ports were closed, the middle of 3 inlets was slightly higher also. U know alco actually made a marine 2 stroke once with extra inlets reed controled and above normal inlets for this purpose, very old engine.
I have heard of those, but allso many other semidiesel engines. The one that amazes me most is the Petter Harmonic diesel engine, you start it up on crank compression. After that it is switched to "harmonic" running, which compleately relies on a fully tuned exhaust system for the engine to run. Theese were very powerful for the time (early 30s ?). Disadvantages of this was; they could only run on a fixed rpm setting. To change rpm, the exhaust had to be retuned.
the crossley used exhaust pulse pressure charging along with a blower, but this used pressure waves from adjoining cylinders to suck through cylinders and blow back any wasted air, like that petter u mention; I'd never heard of that one before btw. fairbanks and morse do huge crank case loop scavenge diesels theres a few videos on here.
Well they are required to start a 2 stroke atleast, but once the engine is running a turbocharger can supply the boost pressure to maintain operation. Many locomotives use a type of pressure operated clutch on the blower drive so that it disengages the blower once the turbos are producing optimum boost.
that is a screamin GM (as known in old school terms) 2 stroke diesel engine they sound awesome in a truck with unmuffled twin exhaust stacks you can hear them coming for miles sounding like they are doing 20 000 rpm but not
You stupid motherfucker that is a 2 stroke. There is 2 strokes for a complete combustion. That doesnt mean its like a weedeater. The fucking liners for the pistons have vents which the blower/turbo blowers exhaust out and adds fresh oxygen for combustion. They do not have intake vavles. NONE believe me im a diesel mechanic. If it did have intake valves then it would be 2 more cycles to reach complete combustion. Im only 17 years old. I rebuild these babies.
It is a 2-stroke for sure. Those valves you see are for exhaust only. The intake is the ports inside the cylinder that you cant see unless apart. A diesel 2-stroke cant be compared to a gasoline 2-stroke.
TWIN TURBOS?
MrPhotodoc 3 months ago
@DJRuteOfficial yes moron, thats the exhaust valves and they open every second stroke. its a 2stroke! the intake is ported into the cylinder
1illert 7 months ago
So this engine... Would it be more torque-y or more on the power side of things... Cause obviously a diesel engine is better for torque than power but a 2 stroke is leaning more towards better power than torque due to higher revs...??
burningtheangel 7 months ago
@burningtheangel Youre mostly correct. Many think two stroke engines spin faster then 4-stroke engines, in most cases it is true (for gas engines), but in this case a Detroit two stroke diesel does normally not. It is possible and safe to adjust the governor so it can spin up to 3-3500rpm for short periods of time, but max continious rpm is usually rated at 2300 or 2100. So in most cases it turns slower than an equally sized four stroke diesel engine.
Da9eI 7 months ago
@Da9eI Better for torque then? I've not really researched much into 2 stroke as they're most common in 50cc mopeds and generally very basic. Also what would this engine be used for? Sorry if you've been asked all this before, there are a few too many comments for me to read through :P
burningtheangel 7 months ago
@burningtheangel The two stroke diesel is perfect for any application that require constant speed, like a generator or marine propulsion. But back "in the day" they were allso used in road transport (i.e buses, trucks), and large cars. Theese diesels are quite different compared to a gas two stroke, since they have full pressure oil lube, cam and valves. The design is still beeing used in heavy\large applications like ships and lokomotive. Yep, there are lots of comments here!
Da9eI 7 months ago
@burningtheangel So, a common thing for a two stroke, is that you have to keep the revs high to "harvest" the most power, as they are quite weak at lower rpm. Im not really sure the power vs rpm curve of the two stroke diesel, but I would imagine it is quite linear compared to a four stroke diesel. The other thing about two stroke diesel, is that they have quick "rpm acceleration".
Da9eI 7 months ago
@Da9eI Ahh cool. Well thanks for all the info! I might read up more on some of this stuff... I'm just a car mechanic so I only ever deal with 4 stroke. Would like to get into agriculatural and HGV mechanics just to see a bit more diversity in what I work on. Or a motorbike mechanic... Then i'd get loads of 2 stroke mopeds too! :P
burningtheangel 7 months ago
@burningtheangel the 2 stroke is not reeving higher in fact most 2 strokes do not rev as high as there 4stroke brothers but because it is a power stroke every time rather then every other time it sounds faster but the crank rpm is slower
and many 2stroks have grater torque then 4stroks per cc
and smaller cid 2stroke will have more torque then a larger cid 4stroke were the confusion is how long the torque curve is
dexter2433 6 months ago
I bet that smells good.
bigdaddymatty17 7 months ago
what the hell, this isnt a 2 stroke!! u can see the valves...!
DJRuteOfficial 8 months ago
how much power these things put out? and how many liters are they?
solja239 10 months ago
@solja239 The model mumber of the DD's say how many cylinders and volume of each cylinder in cubic inches, so a 8v71 is 8x71=568ci or 9.3L. A 6-71 is 7L. I do not remember the hp of this particular engine, but the N/A-ed (blower only is considered N/A) usually ranges from 310 to 340 depending on application and accesories. Looking at other peoples comments it seem like it was pretty common at around 380 hp for turbo 8v71's. But with lots of room for more if you can keep it cooled well (marine).
Da9eI 10 months ago
@Da9eI oooo, so not to be offensive or anything is this wouldnt be considered a highly effecient motor then right? or does this motor have a higher torque output versus a 4 stroke gas?
solja239 10 months ago
@solja239 Its still a high efficient diesel engine, but it depends on what it is used for. The 2-stroke engine (in general) does have a slightly shorter power stroke than a 4stroke engine, thus reduces its torque a bit. A diesel still will mostly allways have more torque than a gas engine. Just so you know, Im more of the mechanical and electical dude, thus this is acutally a little bit outside my field of knowledge... :P They say this 8v71tt had 525 hp. and there were two of them.
Da9eI 10 months ago
@Da9eI ahhh thanx for the info, motor seems real interesting
solja239 10 months ago
@solja239 a 2 stroke anything will have more torque than anything 4 stroke the same size. 2 stroke engines produce a powerstroke every turn of the crankshaft. 4 strokes its every other turn of the crankshaft.
drkmanracer302 9 months ago
@drkmanracer302 Not allways true, a diesel 2-stroke (and most gas) has a smaller and shorter bang because of the ports at the bottom of the cyllinder. Combustion has to be complete before valves\ports open\uncovers or they'll burn out valves\ports\rings faster.
Da9eI 9 months ago
@Da9eI You are close but no cigar just yet. All 2stokes have at least intake ports at the bottom, some have exhaust ports as well. Most externally charged engines lilke the detroit have exhast valves to scavenge but a few have ports, but a sealed crankcase, they depend on a supercharger as well. The Deltahawk is a v4 2stroke aircraft engine that is totally ported with a sealed crankcase and full pressure bottom end. I love detroits, they powerful, simple and easy to repair.
klesmer 9 months ago
@drkmanracer302 i thought it was the other way around, diesels have 6 stroke versus gas 4 the more stroke the higher torque, i mean even down to dirt bikes the 2 stokes never had any bottom end
solja239 9 months ago
@drkmanracer302 not true 2 strokes are more rpm than torque the 4 was designed for torque not rpm its all in the gearing to make a 2 stroke have more torque the 2 strokes are capapble of 2x the rpms as of a 4 stroke diesel (will only turn maybe 4500 rpm max safely)
stumpy166521 9 months ago
@drkmanracer302 Not always. Often a gas or diesel 4 stroke will have much more torque than a two-stroke. Example dirtbikes, think of a 250 2 stroke just rips screamin at like 15,000 RPM, and think of that low end oomph and constant power you feel out of the same bike except 4-stroke, thats the low end torque and broad powerband that most consumer 4 strokes offer. 2 strokes generate alot of power but only in a certain area of RPM, which i actually prefer in a dirt bike... just sayin though.
CMI1986X64 8 months ago
@drkmanracer302 wrong there... a 2 stroke petrol makes way less torque size for size then a petrol 4 stroke. a 2 stroke will make higher hp size for size any day of the week
TheTwoStrokePower 8 months ago
@TheTwoStrokePower this is so wrong lets look a dirt bike a yz250 2t compared to a yz250f
yz250 2t 48.8 horsepower and at 8800 rpm and 30.6 foot-pounds
yz250f With 35.33 horsepower and 18.76 lb-ft of torque,at 13.000 rpm
andthe same is true in the big engine world for the most part
the misconception is in how broad the torque curve is most of the time the 4 stroke have to rev much higher to come close to the power and torque of the 2 t brothers so the torque the 4t has is strung out longer
dexter2433 6 months ago
Aha it is a Diesel engine aha. Now is it clear. Thought first it was a gasoline engine, Americans who love big petrol engines.
With current fuel prices it will also be less.
lexpee 11 months ago
What for fuel use this engine then? moped fuel, mixed gasoline?
Will this be a very expensive engine to run. mixed gasoline is 40% more expensive than regular gasoline.
lexpee 11 months ago
@lexpee Its a Diesel engine dumbass, you cant compare it with a moped engine or gasoline two stroke, its like comparing the moon to the sun. A diesel engine is direct injected, fuel never was or will never be inside the crank-case, which instead is filled with straight 40 weight oil. Like NBSV1 said, the valves are ONLY for exhaust, the intake is near the bottom of the cyllinder where pressurized air is beeing feed from a blower\superchager. In my fav. list, two vids describe how diesels work
Da9eI 11 months ago
@lexpee
Says who? "Moped fuel" lol...
JGringo56 11 months ago
This really is a 4 stroke engine, Place the glasses beter on your nose,
you see really valves moving on this video.
This is a 4 stroke engine and no 2 stroke.
It is that you know.
lexpee 11 months ago
@lexpee He explains it in the description. It has exhuast valves only. At some point of the piston going down the exhaust valves open. Then at the bottom of the travel the piston uncovers the intake holes and the rush of incoming air helps force out the rest of the exhaust. Then the piston goes up for the compression stroke. It's a more modern and efficient take on a 2 stroke.
NBSV1 11 months ago
Sounds really good!
someonehasthisid 1 year ago
i thinki see valves moving on the heads... 2 strokes don't have valves....
nathannickel1 1 year ago
@nathannickel1 I think you misunderstand the meaning "2-stroke", which 98.5% of the world population do. The definition of "two\2-stroke" does NOT say wether the engine has valves, carburettor, injection or not, but rather how many strokes the piston has to take before new air\fuel enters the cylinder. The modern type two stroke diesel engine have valves, are direct injected, have full pressure oil lubrication and are uniflow scavenged. Understand? Good.
Da9eI 1 year ago 13
@Da9eI "Understand? Good." smartass...
chad174670 11 months ago
@Da9eI You really are a smartass.Understand?Good.
98.5 of the world population.
Oh gee,so you're the top 1.5 percenter?
You must be a part of some kind of automotive mensa group.
Nitwit.
Angelus12308 11 months ago
@Angelus12308 Apparently I misscalculated, seems like it might be more then. There are many types of two stroke diesel\semidiesel\oil engines that dont have valves, but saying a two stroke doesnt have valves is wrong.
Da9eI 11 months ago
@Da9eI Don't worry,I know that two strokes can be valveless,or have Reed,RAVE1,RAVE2,angular,and classic types of valves.
Your knowledge is admirable,you just seem to rub it in peoples faces a bit.
Angelus12308 11 months ago
@Angelus12308 Its just that I get a lot of comments and pm's saying "two strokes dont have valves", Im suprised I even reply to them. Theese might be the last ones though, kinda getting tired of it :P You seem to be one of the smarter people writing in here :)
Da9eI 11 months ago
thats one of them detroits that use alot of oil
MrMrcrain 1 year ago
@MrMrcrain If its oil consumption is high you're using the wrong oil viscosity, or has very bad maintenance. Theese engines does not requre alot of love, just a little bit is enough and they'll last forever. I've seen some examples of oil Leaks, but thats another story!
Da9eI 1 year ago 2
@MrMrcrain The Green Leaker!
funtarded 1 year ago
i need those turbos for my vw bug...
vochitoken 1 year ago
I wonder how well it would run if you cut down the tops of the pistons say about .050 and replaced the injectors with gasoline injectors and put a crank trigger MSD system on it with spark plugs instead off glow plugs. It would be cheaper to run too.
Do you think that's possible ? Gasoline conversion.
mrnewagemotor 1 year ago
@mrnewagemotor I have actually thought of this several times, not just a conversion of a DD engine, but allso an engine purely made for gasoline use. Imagine a two stroke, full pressure oil lubrication, valves, supercharger and direct injection! It Must be good for something! The Volkswagen TSI engine is probably the closest, but its four-stroke. To do this conversion with the DD engine, you would have to do something drastically to the heads since they dont have glow plugs. Mybe it could work.
Da9eI 1 year ago
@mrnewagemotor Two stroke Detroit engines have been offered from the factory with spark ignition for many years. The fuel of choice for the spark ignition engines is usually natural gas, as gasoline is generally too expensive for industrial applications. Check with your local Detroit Diesel distributor for more information on spark ignition engines.
JGMagoo 1 year ago
@mrnewagemotor Assuming you can insert a spark plug and lower the CR sufficiently it should run just fine. In theory anyways it will.
TestECull 1 year ago
This has been flagged as spam show
that thing must be amazing on fuel
satan31337 1 year ago
these kinda detroits have balls cus of the twins on the side or what?. i learned how to drive on a concrete mixer with one of these dont know what size but same style. now im all 4 cat engines but shit id change 4 one of these old green monsters anyday not the new ones i dont like the lack of power withpout pushin em not saying their weak cus theyve out pulled me on hills
trokeroelinquieto 1 year ago
What is that guy doing to the valves at 1:24?
sackcheck 1 year ago
@sackcheck Im not really sure, he's the expert on theese engines. But I belive he's checking that all injectors are firing by holding them down, you should hear if there is something wrong (no change in sound means not working). I think you can see what cyllinder that is producing the extra smoke. In my oppinion the smoke disappears when he tests the cylinder no2 from the left, on 1:24 .
Da9eI 1 year ago
checking the compression releases?
thedirtymammal 1 year ago
@thedirtymammal Correct me if Im wrong, but Detroit Diesel dont have compression release on any of their engines.
Da9eI 1 year ago
@sackcheck Shortening injectors to see which are bad.
Hotrodx199 1 year ago
Why does this 2 stroke have a valve train?
magnum9987 1 year ago
@magnum9987 Because it is a diesel engine, not a gasoline weedwacker engine. Just read the other comments, you're not the first one who asks this question.
Da9eI 1 year ago
Very cool! Love 2 stroke diesels. Incidentally what were they working on? I noticed that while running there appeared to be incomplete combustion from the right cylinder banks and hence u could see the white smoke from the right exhaust manifold.
nitlsu 1 year ago
Damn, look at that friggin flywheel.
420witchdoctor 1 year ago
It sounds like a baby 645 Roots blown diesel.
BNSF5608 1 year ago
looks like an engine out of a john deere tractor lol
joeylad2k8 1 year ago
soooo.... would this fit in my jetta??
CCCProdina 1 year ago
@CCCProdina it weighs more than the jetta.Try a 3-53 and you have a chance
AcaAllertor127 1 year ago
Euro 5 emissions standard! ;-))
ChuffChuffWoo 1 year ago
i want one if i had 10k
josephhoffman89 1 year ago
looks like you didn't let the camera focus before you turned on the video.... or it might be a low MP camera too.
alexander1485 1 year ago
@alexander1485 Its low res., (VGA) but its allso a compact still photo camera. Probably not the best to record video in low light conditions.
Da9eI 1 year ago
@Da9eI I see... yea, I guess you use whats available to you at the time... better than nothing type of scenerio...!
alexander1485 1 year ago
LOL nigga i need one for my go kart
LOLZWAFFLEDOOD 1 year ago
@LOLZWAFFLEDOOD LOL !!!
bligrigs 1 year ago
I had a 4-53T in a Suburban and loved it. It got great mileage and was smooth even though it was just a four cylinder---the truck would have been a hoot with an 8-53!
tlfrantz1 1 year ago
GM does not own detroit diesel Roger Penske does
tonycavez 1 year ago
The twin turbo version of the V-8 shown in this clip is extremely rare. It might be a custom set-up.
JGMagoo 1 year ago
@JGMagoo That might be true, some of the tubes and pipes for the exhaust\air looked rather "home made" in some areas. If I remember correctly the intercooler might also be custom. (the box thing between the turbos)
Da9eI 1 year ago
there is usually no rpm difference between the 2 stroke diesel and the 4 stroke ones. The 2 strokes just sound faster because they fire the cylinders twice as much
shackwrrr 1 year ago
i wonder what the rpm on that bad boy is like.....
Draco1180 1 year ago
full throttle????? or idle???
tdadieselpower1 1 year ago
@Draco1180 On this vid, its only idling at about 600rpm. At startup it might have been up to around 800 rpm. Maximum on this particular engine is 2300, but would usually have a cruise speed of 1800-2000 rpm
Da9eI 1 year ago
@Da9eI thats horrable....
Draco1180 1 year ago
They were rated at 2100 RPM, Max.
JGMagoo 1 year ago
All these 2 cycle engines are usually Blown or supercharged and crosscavenge Exhaust.
cessnawings67 1 year ago
jesus it reminds me of a VERY angry chained up lion
AMCtilldeath 1 year ago
Because that's what it is in this video. =)
lazzer408 1 year ago
Interesting. Are these used on plant/construction machinery, generators, ?? I've always thought that 4-strokes were more efficient due to cleaner air burning, am I right (ie, less burnt gas left in the mix upon the following combustion), but then maybe there's some unburnt fuel too which can burn, a plus..? What;s the reason for it being 2-stroke, higher power output for engine mass? I don't know these motors, just curious - can anyone help me.
alihmcm 1 year ago
@alihmcm i'm guessing higher or smoother power output, as you get the power stroke twice as often
jcbiddulph 1 year ago
@jcbiddulph It seems the other guys confirm what you say, more power and much smoother.
alihmcm 1 year ago
They were extremely popular in the US from about 1939 to about 1975. They were used extensively by the US Armed Forces in trucks, boats, generators, and stationary applications. Their downfall was fuel economy, emissions and noise. One of their great advantages was they could be made to rotate either direction and they have tremendous interchangeabillity of parts between 1-2-3-4-6-8-12 and 16-cyl versions. ALL are supercharged, Some later ones were supercharged AND turbocharged.
JGMagoo 1 year ago
@JGMagoo Very interesting.
alihmcm 1 year ago
8v71 is in my opinion the best sounding 2 stroke! I have some vids of a 6V92T and 6L71TA on my page if interested.
studpuppy69 1 year ago
2 stroke diesels only have exhaust valves
no intake valves
darksidedlegoman 1 year ago
What size engine is this?
roboman79 1 year ago
Silver 92 same thing ?
DidUAskMeFirst 2 years ago
What the hell are those little valve train like things on the cylinder head? I thought this a 2 stroke. Are those diesel injectors powered by cams like what Volkswagen uses for its direct injection diesels?
madzyzome 2 years ago
i would think that those are in fact injectors. since diesel motors run off compression. you need something to be able to shoot fuel and oil injection in that case into the cylinder. they are probable timed with a gear drive just like any other 4stroke diesel is with the crank gear and the injection pump.
chrsstpltn 2 years ago
the valve-train is the injectors and exhaust valves
gekkomaster1 2 years ago
It could be that but its probably both that and exhaust the exhaust valve.
kylagar 1 year ago
@madzyzome
it is posibble for a 2 stroke to have valves, something can still have vales yet only do 2 cycles.
wheather this is the case i dont know but is is possible
sidewayzskillz 1 year ago
It is a 2 stroke, but on a Detroit, there are slots toward the bottom of the sleeve. When the piston covers and un-covers those slots it acts like the intake valve. The "little valve train things" are the EXHAUST valves and injectors. Detroits come with either a 2 or 4 valve head, and they all have 3 rocker arms. The 2 outside rockers are dedicated to the Exhaust valves, and the center rocker in each group is for the injectors. Hope this helps.
RustyCarnahan 1 year ago
Yeah I looked the specs up online. What I don't understand is why more diesels aren't 2 stroke. Since raw fuel isn't ejected with the exhaust like a 2 stroke there is no reason for an increase in pollutants. A modern direct injection 2 stroke diesel should not pollute more than a 4 stroke. So what gives? With double the combustion you get double the power (theoretically of course, friction and thermodynamic loses not withstanding).
madzyzome 1 year ago
@mageac
I didn't mention GMC blowers at all. GMC blowers on Detroit engines are "Roots Blowers". Many companies have made, and do make Roots blowers for all sorts of things. A Roots blower ( GMC origin or otherwise) on a gasoline engine supercharges, but a roots blower on a 2-stroke diesel SCAVENGES. Same machine, different function. Diesel engines often run massive amounts of excess air, Gasoline engines run roughly stoichiometric. But what would I know? I just design the fucking things.
mushroomscouser 2 years ago 8
@mushroomscouser lol good explanation
dvdprui 2 years ago
@mushroomscouser Like Van Damme, to dam tough!!!!!!
ollonsvin 7 months ago
wow this is something unique alright, after reading those comments.
cdoublejj 2 years ago
wait what it has valves normally thats a 4 stroke gonna have to read those comments.
cdoublejj 2 years ago
it sounds like a funny sounding four stroke diesel :P seriously it does
cdoublejj 2 years ago
Roots blower is a "positive displacement" machine..it has no internal compression, so is a "blower" and not a compressor. On a 2-stroke, the blower scavenges the cylinder, clears it of exhaust gas...in place of a 4-strokes exhaust stroke. A supercharger increases the charge density a spark ignition engine, and does nothing for scavenge, unless it is a direct injection SI engine...
mushroomscouser 2 years ago
@mushroomscouser
this blower and what people call an 8-71 blower on a v8 gas engine, are the same thing, they are called 8-71s because they came off a 8-71 engine
mageac 2 years ago
i was wondering on like a blown car how it has like the blower on top is the supercharger the blower or is the air grabber on top of the supercharger considered the blower
randombk82894 2 years ago
Its difficult to understand what you're trying to say here, but I assume you are trying to understand the difference on a blower and a supercharger, right? As far as I know, there are none. The blower on theese engines does not provide any boost. But a supercharger on a four stroke engine does. Good enough? If not, try looking trough the other comments, you should find many answers there.
Da9eI 2 years ago
@Da9eI wikipedia has several good articles on this topic :0)
dvdprui 2 years ago
I know :) Its just like trying to explain something to my mom, she doesn't understand, even though I try to tell it as easy as I can. Like, how to stop a snow-blower, you switch the big red button to "0". She turned the choke on instad, so the engine ran with full choke until it ran out of fuel! (little off topic? but I think you get the idea, there are lots of stupid people around that dont know what google is!)
Da9eI 2 years ago
Blower/supercharger-same thing. They pressurize the intake. On a 2 stroke diesel, it is used to expel the exhaust gasses and in the same action, provide the intake charge. As the piston nears TDC, the injector sprays the diesel in.
On a 4 stroke gas, again it pressurizes the intake, but its purpose to allow for a denser air/fuel mixture. More air/fuel equals a more powerful firing.
CrazyAlvis 2 years ago
Comment removed
fresnosmooth2000 2 years ago
hp? how much?
suzucat92 2 years ago
How a two cycle diesel engine works....in six easy steps...... what?
I really appreciate the explanation, I'm just a smart ass.
BiffBallbag 2 years ago
so is this engine both supercharged and turbocharged? and does it have exhaust valves? if not are they rockers?
nitro74cs 2 years ago
Yes, yes and yes. Try reading the other comments... However it isn't actually called supercharged, event though it has a supercharger. Its more like a blower, it only enough to replace the exhaust in the cyllinder with fresh air with no extra compression. Thats why the turbos get in the picture, they provide additional boost.
Da9eI 2 years ago
it has oil in the crankcase like a 4-stroke diesel
enginemaniac314 2 years ago
Comment removed
martintrivi 2 years ago
looks like an 8V92T/A these are turbocharged, supercharged, and aftercooled.
martintrivi 2 years ago
now becaus ethis is differnt then a conventional gasoline 2 stroke does this have oil in the crankcase or does it use an oil diesel mixture or even both thanks for any insight
fmftrx300ex 2 years ago
it has an oil sump like a 4 stroke but it aint got intake valves, there are ports in the cylinder and the supercharger blows the air to purge the cylinder, but it runs like a 2 stroke
urbandestruction 2 years ago
i think its beautiful *wipes tear from eye*
DoMikSun 2 years ago 2
gotta love 2 stroke smoke lol twin turbos nice
Anthonyx99 2 years ago 2
whats that out of? looks like a tank engine
BR4DL3YY 2 years ago
@BR4DL3YY Kinda looks like it might be out of a boat... I'm no expert tho. I do however want to know how I can get one and try jam it into my little L300 van for some fun!!
336Torana 2 years ago
hahah lol
BR4DL3YY 2 years ago
I think its from a boat too, its got funky exhaust manifolds that i think water goes through.
grangeroo 2 years ago
imagine how big the piston r. what did this engine come from?
canyonplayer09 2 years ago
2 stroke engines would rather have valves, but the whole advantage of a 2 stroke is you can skip those parts. This think must sound like a cement mixer full of broken glass.
dwindle 2 years ago
thats not a 2 stoke; that thing has over head valves.
2 stokes do not have any valves!!!!
Chevenitsu 2 years ago
it has intake ports and exhaust valves
gekkomaster1 2 years ago
You better go tell that to the Detroit Diesel Corporation. They built MILLIONS of these 2 stroke diesels and they all had exhaust valves (except for the obscure 51 series).
Why are there so many retards posting this crap to almost every 2 stroke Detroit vid?? Do some research before you come in here and make yourself look like an idiot!
bigchevy80 2 years ago
i wanna drive a car that is powered by a two stroke diesel
do you still have to oil the gas in a 2 stroke if it is diesel
bobwatters 2 years ago
No, a two stroke diesel has oil in the sump like any four stroke engine. A diesel two stroke is very different to two stroke gas engine since it is direct injected, fuel never enter the crank\sump like it does on a gas two stroke engine.
Da9eI 2 years ago
ok thx
i was like how does oiled diesel even ignite diesel already has like an oily consistency to it
bobwatters 2 years ago
instead of using crank case to scavenge, modern 2 stroke diesels use blowers or turbos or both, if only turbo its mechanically driven during start up.
only 2 stroke diesels used crank case compression like petrol engines, the lubrication was not pre-mix though, they were wierd.
google old engines or old hot bulb engines, has some good stuff, including a gardner 2 stroke with inlet/transfer ports all round cylinder with exhaust ports above, also all way round!
tpvalley 2 years ago
ok thx some of those sound pretty wierd
bobwatters 2 years ago
This has been flagged as spam show
Cool video! Check mine out if you want. its about a 4 stroke.
haider87 2 years ago
First off this is a 8V-92 since it has the front vibration dampner. And uniflow 2 stroke diesels have 4 exhaust valves per cylinder for those of you that are to ignorant to know.
TRChristman 2 years ago 3
Im sure its a 71 series detroit diesel engine, it was stamped 71 series on the head cover vents. And most marine diesels have different engine mounts compared to on-road engines.
Da9eI 2 years ago
Some ways to tell if it is a 92 series over a 71 series (head cover vents can be the same for a 71 and 92 series). One is the forementioned big vibration dampner on the front of the engine (flywheel looking). Then is the exhaust valves-if they are positioned in a square pattern then it is a 71. If lower are wider then upper then 92. Also on the front of the block in front of the head would be a cast 92. Check it out
TRChristman 2 years ago
the genius thing is that the exhaust valves close whilst the inlet ports r still open so u can actually pressure charge them more without blowing extra air out of exhaust, some loop scavenge diesels had extra rows of one way valve controlled inlets that were higher that exhaust port for this same reaon, they only passed air when ex was closed, alco actually made a marine 2 stroke diesel like this u know.
tpvalley 2 years ago
This comment has received too many negative votes show
this aint a two stroke engine you faggots cos u can clearly see the valves moving up and down
gomez8ball 2 years ago
its a 2 stroke diesel... lool
kieran268uk 2 years ago
2 stroke diesels have exhaust valves only.
the intake vales are in the cylinder like a gas 2 stroke. read the description of the vid, there is an explanation of how it works.
Turbojeep23 2 years ago
wow ain't you smrt ....i mean smart!
rigjockey423 2 years ago
Sounds tough =D
sidevalve337 2 years ago
it's not.
TheTerminator310 2 years ago
can someone explain the benefit of exhaust valves over exhaust ports in these 2t diesels?
were there any that were made with regular 2t exhaust ports
Brian500R 2 years ago
The 51-series Detroit had exhaust ports instead of valves. I guess it has a similar design of a gas two-stroke engine, except its still oil in the crank. I have little or no knowledge about the 51 series, but I do belive both intake and exhaust ports were at bottom of cyllinder, uncovering\covering by the piston. This design will not remove all exhaust from cylinder, and some will remain before next cycle begins. Allso the 51 series werent very powerful. 51 series are very rare nowdays.
Da9eI 2 years ago
no, all detroits were uniflow with overhead exhaust valves, they r not loop scavenge, in fact u can see the rockers on this one. all detroits used the same layout.
tpvalley 2 years ago
Then how about the Series 51 engines which didn't have exhaust valves...
douro20 2 years ago
As far as Im aware the 51 series is a uniflow with overhead exhaust valves.
tpvalley 2 years ago
You might be right, I have never seen a 51 series detroit. The info I got was from wikipedia, and in a text there they mentioned that the 51 series is a simplified 53 series engine with no valves.
Da9eI 2 years ago
I did some research, they all have overhead exhaust valves, the 51 and 53 r the same but for liners and pistons also I think.
tpvalley 2 years ago
The 51 series does NOT have any valves and scavenges just like a traditional gasoline 2 stroke engine. They are fairly rare engines.
bigchevy80 2 years ago
I think ur mistaken, there r videos of the 51 series on here and they clearly show valves etc.
tpvalley 2 years ago
in fact the 51 is the same as the 53 apart from liners and pistons I believe.
tpvalley 2 years ago
nope the 51 series did not have exhaust valves. you may have seen something that looked like valves opening and closing but it was just the rocker for the fuel injector
scottums5427 2 years ago
even the exhaust manifold comes from the head on the 51 series, its just a 53 series with different cylinder.
tpvalley 2 years ago
actually I just did some research and u r correct, it was a simplified version of the 53 series without exhaust valves.....
I'll punch myself in the face for u.
tpvalley 2 years ago
haha nah man its cool i doubted my self on it too!
scottums5427 2 years ago
have u any idea how the ports r layed out on the 51 series?
r the exhaust ports above the inlets like the MAN engines of old where air goes through inlet curves round, reflects off opposite side of cylinder then loops out of exhaust above inlets/ shoots exhaust gasses out of exhaust above inlet or are the exhaust ports on opposite side of cylinder to inlet?
It looks like it may have exhaust manifold on same side as inlet/blower so having ex port above inlet but not sure.
tpvalley 2 years ago
have u heard of crossley diesel engines?
they made a loop scavenge with ex. ports opposite inlets, the inlets all had reed valves, I think they may have been higher than exhaust port so that they could still charge cylinder after ex. ports were closed, the middle of 3 inlets was slightly higher also. U know alco actually made a marine 2 stroke once with extra inlets reed controled and above normal inlets for this purpose, very old engine.
tpvalley 2 years ago
I have heard of those, but allso many other semidiesel engines. The one that amazes me most is the Petter Harmonic diesel engine, you start it up on crank compression. After that it is switched to "harmonic" running, which compleately relies on a fully tuned exhaust system for the engine to run. Theese were very powerful for the time (early 30s ?). Disadvantages of this was; they could only run on a fixed rpm setting. To change rpm, the exhaust had to be retuned.
Da9eI 2 years ago
the crossley used exhaust pulse pressure charging along with a blower, but this used pressure waves from adjoining cylinders to suck through cylinders and blow back any wasted air, like that petter u mention; I'd never heard of that one before btw. fairbanks and morse do huge crank case loop scavenge diesels theres a few videos on here.
tpvalley 2 years ago
alot of times them detroits wont have turbos, and for some reason the gov,y uses the detroit 8v in the pos lvs
cruton87 2 years ago
superchargers are needed on diesel 2 strokes to run
cruton87 2 years ago
Well they are required to start a 2 stroke atleast, but once the engine is running a turbocharger can supply the boost pressure to maintain operation. Many locomotives use a type of pressure operated clutch on the blower drive so that it disengages the blower once the turbos are producing optimum boost.
SeasOfRhye 2 years ago
that is a screamin GM (as known in old school terms) 2 stroke diesel engine they sound awesome in a truck with unmuffled twin exhaust stacks you can hear them coming for miles sounding like they are doing 20 000 rpm but not
doggybag77 2 years ago
You stupid motherfucker that is a 2 stroke. There is 2 strokes for a complete combustion. That doesnt mean its like a weedeater. The fucking liners for the pistons have vents which the blower/turbo blowers exhaust out and adds fresh oxygen for combustion. They do not have intake vavles. NONE believe me im a diesel mechanic. If it did have intake valves then it would be 2 more cycles to reach complete combustion. Im only 17 years old. I rebuild these babies.
ryanvin07 2 years ago
blows exhaust***
ryanvin07 2 years ago
thats not 2 stroke dude its just as stupid as fixing the carburetor on a fuel injected car
thenitro15 2 years ago
Comment removed
Xyleksoll 2 years ago
Greenpeace seal of quality .
FiasaPower 2 years ago
It is a 2-stroke for sure. Those valves you see are for exhaust only. The intake is the ports inside the cylinder that you cant see unless apart. A diesel 2-stroke cant be compared to a gasoline 2-stroke.
79fordblake 2 years ago
2 strokes?
martinduenas 2 years ago
doesnt sound 2 stroke?????
damian1995 2 years ago