the valves do open every revolution, thats why detroit designed them like a race engine. the rocker arms screw into the pushrods and lifters for high rpms. in case there is any valve float, the valve train wont come apart. the reason why one side smokes more than the other is because of the fuel rack settings. its easy to get a detroit fuel rack a little leaner on one side than the other. i love how he is running 240mm injectors, and stock is 53mm!
It would be nice to hear this one when it really runs right, it revved nice in the beginning but was sputtering as soon as he put the power to it, like the injectors were starving for fuel. I'm sure I saw this same machine pull in Spokane, Wa several years ago, I even have a few pics. The pull was at night and mid-track the entire exhaust system was red hot, it was running phenominal then and having had much experience with Detroits, I'd say it was turning well over 5,000 much to my disbelief!!
Ok, I listened to the video again and it is definately the same machine I saw about 10 years ago or so as the commentator mentioned it used to belong to Bill Cole. Back then it was called the "Vindicator". Nice to see it still in action.
@12valvepower1 The turbo feeds the blower. All 2-stroke Detroits are naturally aspirated, unless they are turbocharged as well. The blower, or blowers (in the case of a 12v) in a v configured Detroit sits in the lifter valley. It moves spent gasses out of the engine, and allows fresh air to be ingested. Thats all they do. No boost is produced, unless a turbo is plumbed into the intake, to provide positive manifold pressure.
think about it... those exhaust valves are cycling @ 5000+ times per minute... in a four stroke motor that's equal to 10,000 rpm... impressive when you consider how big and heavy the valve train parts are.
A bit like 2 seperate exhaust outlets sometimes make an engine sound like it lower revving u mean? U sound like u know more about these than me; I've got all my info second hand if u know what I mean: I live in UK so I have only ever seen 1, on a generator, looked good, clean etc, limited uses in UK so it was for sale for about £50 ($100). If I only knew what it was then! It was a v8, spotlessly clean and painted blue. Perfect for a boat. Can u still get spares for them?
Haha not quite 5000, it's somewhere between 3500 and 4000. Still pretty good considering that engine was governed at 2100 rpm from factory and we are still using the stock bottom end, not even upgraded fasteners. Gm overengineered these engines. I've personally seen them over revved. Over heated, and ran without oil at work and have yet to see one throw a rod. Seized yes, but not windowed.
@@speed150mph These are tough 2 stroke engines! Also i have seen 8v71 generator run oil of oil and keep going on very little oil. got busy and for got to top it of on the boat i worked on. these 2 strokes are amazing.
@@speed150mph Most 2 strokes are over designed to handle the continuous heat ans pressure they make. Look at the 850 ETEC rotac with huge rods and split bearings and webbed crossbolt main crankcase! That more makes about 3.2 hp per CID with no help unlike a 4 joke automotive which need a lot of work to get there and converted to 2 stroke like the toyota 2JZ s-2! The mazda rotary is a form of 2 stroke as it has oil injection galore and must use synthetic 2 stroke oil! Also lightning is a terawatt level plasma 2 stroke!!!
@BIG379 er, what? because its compression ignition its limited in rpm by the time u have to inject mix and ignite fuel at high rpm by the time it starts to ignite the piston is way past tdc so hardly any power is produced at them rpms, for this to work at such rpm is genius, the fuel must all be injected really early and in a short time because u only have 1/100th of a second for all of this to go on.
But with a detroit the exhaust valves open every revolution so valve bounce is more likely! The weight of the pistons and crank etc will be just as heavy as a 4 stroke, it still has valves in head. I have seen tuned detroits rev to over 4000rpm, theres quite a few on youtube, they sound insane! I wouldn't stand to close though!!
Most 4 stroke parts are lighter. Take a look at a at kx500 compared to kx450 4 joke. the kx500 pistons and rods will be longer and heavier! The kx500 2 stroke barly hits over 6k where the 4 joke reve to like 12.5k.
har har. I wonder though, do they use modified detroit heads or build their own from scratch? what about the block, it is probably reinforced, but u necer know, detroit diesels may be really strong! 3-5 gallons every etc etc!
its amazing the IP's can even keep up at that rpm you would think that even a hopped up pump would have trouble pushing enough fuel; and you can tell even though motor runs phenomenally that it still has no where to put the power!, still damn amazing machine
By 240 mil injectors, is that a referance to millilitres flow for a given time or something? I wonder, do the turbos bypass the blowers on full boost or just pressurise the air going into blowers?
i just watched this tractor attempt a pull yesterday....they said it's been modified too rev over 6000RPM...... it stalled out on the track and wouldnt start after.....it suuuuuucked.
u would wonder how it has time to inject mix and burn in the cylinder at that speed thats nearly 100 times a second (6000rpm, this revs at 5800rpm)!!!!
I have no opinion yet. Is there a possibility that the greenhouse effect is nonsense? the planet going through a cycle of hot then cold etc for millions of years. In the past 6 years the temperature has dropped on average! (I may be wrong about the "6") :-)
DD's dont have injector pumps, the Injectors have their own pump built in, run by the camshaft.
Thanks, we dont have detroits here in UK, I saw one once only in a scrap yard.
Lovely sound.
the valves do open every revolution, thats why detroit designed them like a race engine. the rocker arms screw into the pushrods and lifters for high rpms. in case there is any valve float, the valve train wont come apart. the reason why one side smokes more than the other is because of the fuel rack settings. its easy to get a detroit fuel rack a little leaner on one side than the other.
i love how he is running 240mm injectors, and stock is 53mm!
Listen to the WOMP WOMP of that ol Detroit could you imagine if they built that today 😳 that was cool👍thanks for sharing
It would be nice to hear this one when it really runs right, it revved nice in the beginning but was sputtering as soon as he put the power to it, like the injectors were starving for fuel. I'm sure I saw this same machine pull in Spokane, Wa several years ago, I even have a few pics. The pull was at night and mid-track the entire exhaust system was red hot, it was running phenominal then and having had much experience with Detroits, I'd say it was turning well over 5,000 much to my disbelief!!
I've heard this bugger run in real life... that was just music to my ears.
Ok, I listened to the video again and it is definately the same machine I saw about 10 years ago or so as the commentator mentioned it used to belong to Bill Cole. Back then it was called the "Vindicator". Nice to see it still in action.
@12valvepower1 The turbo feeds the blower. All 2-stroke Detroits are naturally aspirated, unless they are turbocharged as well. The blower, or blowers (in the case of a 12v) in a v configured Detroit sits in the lifter valley. It moves spent gasses out of the engine, and allows fresh air to be ingested. Thats all they do. No boost is produced, unless a turbo is plumbed into the intake, to provide positive manifold pressure.
it has exhaust valves and intake ports in the cylinder wall
A healthy Detroit there. Pretty damn good pull
Like to see more modifieds using Detroit 2-strokes
On these engines the super charger pushes air in through ports at the bottom of the cylinder and exhaust gases exit through the valves
Custom Modded Engine: $45,000
Custom Frame: $ 25,000
Custom Modded Driveline: $18,000
Front axle: Stock $25 Garage Sale Murray riding mower.
😋
think about it... those exhaust valves are cycling @ 5000+ times per minute... in a four stroke motor that's equal to 10,000 rpm... impressive when you consider how big and heavy the valve train parts are.
its a 2 stroke diesel. it has to use the blowers in order for the engine to run. the turbo's just pressurize it more.
A bit like 2 seperate exhaust outlets sometimes make an engine sound like it lower revving u mean?
U sound like u know more about these than me;
I've got all my info second hand if u know what I mean: I live in UK so I have only ever seen 1, on a generator, looked good, clean etc, limited uses in UK so it was for sale for about £50 ($100).
If I only knew what it was then!
It was a v8, spotlessly clean and painted blue.
Perfect for a boat.
Can u still get spares for them?
God it revs quick
Its a 2 stroke it revves quick but not to high.
never heard a 5000 rpm detroit before i bet it's scary as hell in person
Haha not quite 5000, it's somewhere between 3500 and 4000. Still pretty good considering that engine was governed at 2100 rpm from factory and we are still using the stock bottom end, not even upgraded fasteners. Gm overengineered these engines. I've personally seen them over revved. Over heated, and ran without oil at work and have yet to see one throw a rod. Seized yes, but not windowed.
@@speed150mph These are tough 2 stroke engines! Also i have seen 8v71 generator run oil of oil and keep going on very little oil. got busy and for got to top it of on the boat i worked on. these 2 strokes are amazing.
@@speed150mph Most 2 strokes are over designed to handle the continuous heat ans pressure they make. Look at the 850 ETEC rotac with huge rods and split bearings and webbed crossbolt main crankcase! That more makes about 3.2 hp per CID with no help unlike a 4 joke automotive which need a lot of work to get there and converted to 2 stroke like the toyota 2JZ s-2! The mazda rotary is a form of 2 stroke as it has oil injection galore and must use synthetic 2 stroke oil! Also lightning is a terawatt level plasma 2 stroke!!!
Love it want to see more.
@BIG379
er, what?
because its compression ignition its limited in rpm by the time u have to inject mix and ignite fuel at high rpm by the time it starts to ignite the piston is way past tdc so hardly any power is produced at them rpms, for this to work at such rpm is genius, the fuel must all be injected really early and in a short time because u only have 1/100th of a second for all of this to go on.
Holy SMOKE!!!
But with a detroit the exhaust valves open every revolution so valve bounce is more likely!
The weight of the pistons and crank etc will be just as heavy as a 4 stroke, it still has valves in head.
I have seen tuned detroits rev to over 4000rpm, theres quite a few on youtube, they sound insane!
I wouldn't stand to close though!!
Most 4 stroke parts are lighter. Take a look at a at kx500 compared to kx450 4 joke. the kx500 pistons and rods will be longer and heavier! The kx500 2 stroke barly hits over 6k where the 4 joke reve to like 12.5k.
Detroit Power : )
that left bank was having some trouble...
har har.
I wonder though, do they use modified detroit heads or build their own from scratch?
what about the block, it is probably reinforced, but u necer know, detroit diesels may be really strong!
3-5 gallons every etc etc!
its amazing the IP's can even keep up at that rpm you would think that even a hopped up pump would have trouble pushing enough fuel; and you can tell even though motor runs phenomenally that it still has no where to put the power!, still damn amazing machine
that thing is a big helper to the green house effect
By 240 mil injectors, is that a referance to millilitres flow for a given time or something?
I wonder, do the turbos bypass the blowers on full boost or just pressurise the air going into blowers?
i believe ou hit the nail on the head son
@12VPULLER this tractor engine will turn 6000rpm because of the fuel pump size
i just watched this tractor attempt a pull yesterday....they said it's been modified too rev over 6000RPM...... it stalled out on the track and wouldnt start after.....it suuuuuucked.
it slows down. diesels at high rpm will dry out the injectors and pump will burn up. but that is about it.
hello
nice viedeo
we also drive a traktor with a detroit diesel 12v 71
from were is the check mate puller?
thanks for info
That sounded more like a V8 than a 12v71
That doesn't sound like 6000rpm at all. Remember it's a two-stroke, it sounds 'twice as fast'
considering these engines were never designed to go past 2600RPM!!! 5800RPM is manic!!
sweet
Looked like it was in need of more fuel, the one pipe was smoking less than the other..Seemed down on power to me.
Are any parts standard on this engine?
The block, the heads?
he should have went first class, and built a tractor with a cat..lol
852 cubic inches, which is 14 liters
Was this is BC or AB?
with tires muevetierra who can not
u would wonder how it has time to inject mix and burn in the cylinder at that speed thats nearly 100 times a second (6000rpm, this revs at 5800rpm)!!!!
if its a 2 cycle engine does it have valves or a reed valve
Intake ports and 4 exh valves.
I have no opinion yet.
Is there a possibility that the greenhouse effect is nonsense? the planet going through a cycle of hot then cold etc for millions of years.
In the past 6 years the temperature has dropped on average! (I may be wrong about the "6") :-)
Never got to 3000 rpm this run
Revved to about 3800 at first and settle out at 2600 rpm's thought out his pull! its a 2 stroke so 2600 sounds like 5200!
How much has the cubic capacity tractor and engine type has
12v71 = 852 CID
how did you increase the redline to 5800RPM?
Billet aluminum rods and roller SKF bearings!
Why would you drive this let alone spend money on it?
all the way thru the pull I hear maybe 18-2100
2600 st times. mart.cummins.com/imagelibrary/data/assetfiles/0058689.pdf?fbclid=IwAR3PWM1vZs8JxpuZMoJO5Y0YFoF9pV9fuGEhbyiGgxIP0r6sxzhqo5_P9oY
read uniflow detroit diesel on google.
I say it's fake. If that was a real Detroit he would have split shift at least 4 gears in that distance. 😋
lol hillbillys