I have a couple videos of my 2 stroke detroit diesel powered pickup here on youtube, and I have gotten hundreds and hundreds of questions about how in the world it runs, and lots of people who do not believe that it really is a 2 stroke. So, I'm sorry, I don't have the best voice in the world, and I'm not the best at explaining things or getting the right words to come out, but I did my best in this video to try to give you an idea of how it runs.
Working view of 2 Stroke Opposed piston Engine
Saw this at the Mount Gambier show and had to share.
Really appreciate the interest shown so far.
Some good views of rockers and scavenge blower and a look in the inlet
showing the piston working as the valve plus the injector shooting into a
As a kid I remember the sharp bark these engines made at full noise.
Apologies to anoraks who want to know all the details but it was hard to
hear the chap at the engine because of surrounding noise.
The chugging noise you can hear is the vintage Ronaldson Tippett engine
which is turning this engine over slowly so you can see how it works.
Further notes: It is a 2 stroke cycle which fires every revolution and uses
the piston on the inlet side to open and close the port and the piston on
the Exhaust side to uncover the Exhaust at the appropriate time while the
blower is not to supercharge but to "scavenge" the spent gases ( basically
the air blows in the inlet and out the Exhaust at a slight pressure)
For those interested in Aerodiesels, :
Link to a running engine:: https://www.youtube.com/watch?v=JrAoj5Cuu68
1959 GMC DETROIT DIESEL SHIFTING
1959 GMC CANNONBALL. DETROIT 6 CYLINDER INLINE 2 CYCLE DIESEL ENGINE. THE
TRANSMISSION IS A 10 SPEED ROADRANGER. TOP SPEED OF THE TRUCK IS 65 MPH. I
TRIED TO DO A MIX OF LOW RANGE TO HIGH RANGE AND BACK TO LOW , SOME DOUBLE
CLUTCH , SOME NO CLUTCH , JAKE SHIFTING . UPSHIFT AND DOWN SHIFT. SOME
HIGHWAY DRIVING AT 50 MPH AND AT THE END CLIMBING A GRAVEL DRIVE ON A 15 %
GRADE. THE TRUCK HAS 9000 MILES ON A FRAME OFF RESTORATION. IT IS NOT
COMMERCIAL AND DOES NOT SMOKE OR LEAK. IT JUST GOES TO SHOWS , PARADES AND
EDUCATIONAL EXHIBITS IN ITS WELL DESERVED RETIREMENT. THANKS FOR LOOKING !
THE JAKE HAS A TOGGLE SWITCH TO TURN ON AND OFF , ALSO DEPRESSING THE
CLUTCH OR STEPPING ON THE THROTTLE WILL TEMPORARILY NULLIFY IT. I FLIP
THE SWITCH AT ABOUT 43 SECONDS INTO THE VIDEO. TAKE CARE. To purchase a
custom photo of this truck go to ;
V12 Detriot Diesel 525HP
Setting the engine up and breaking it in.Remember this engine is just being
started after a rebuild so that's why it's smoking from the assembly lube
and the rack will be set-up to stop the hunting etc etc. Then the oil is
changed and the engine painted. These engine's go into Euclid mining rock
trucks,and they were in many other equipment/vehicles.The engine has
rebuild heads,turbo's, blower, water
pump,all internal parts and the air compressor All done in the great north
GM 2-stroke V8 start and run (Higher quality)
Same as the other video, Detroit Diesel 8V-71, except from another angle.
Some blue smoke visible from one side of the engine.
:::: INFO ADDED ::::
Many do NOT understand the meaning "2-stroke", which 98.5% of the world
population do. The definition of "two\2-stroke" do NOT (I REPEAT; "DO
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, are supercharged\blowed and have full pressure oil
HOW A TWO STROKE DIESEL ENGINE WORK:
1. When the piston is at the top of its travel, the cylinder contains a
charge of highly compressed air. Diesel fuel is sprayed into the cylinder
by the injector and immediately ignites because of the heat and pressure
inside the cylinder. This is the same process as 4-stroke diesels.
2. The pressure created by the combustion of the fuel drives the piston
downward. This is the POWER STROKE.
3. As the piston nears the bottom of its stroke, all of the Exhaust valves open. Exhaust gases rush out of the cylinder,
relieving the pressure.
4. As the piston bottoms out, it uncovers the air intake ports. Pressurized
air fills the cylinder, forcing out the remainder of the Exhaust gases.
5. The Exhaust valves close and the
piston starts traveling back upward, re-covering the intake ports and
compressing the fresh charge of air. This is the COMPRESSION STROKE.
6. As the piston nears the top of the cylinder, the cycle repeats with step
RUN AWAY Detroit Diesel! 453-T
DD 453-T runs away! rack gets stuck on valve cover. almost lost some
fingers too, it was all i could find. F'ed up new turbo compressor wheel, was only damage
This is our 24 cylinder Detroit that we are putting in a custom 359
Peterbilt. It will use an Allison Transmission, and the engine will be in
the front of the truck. We are starting off with 40 foot 4" X 14" rectangle
rails, not sure how long it will end up being.