Replacing the detroit diesel 6v92TA engine in mci bus. Sliding cradle in with a new holland tractor
2024 ж. 23 Ақп.
34 213 Рет қаралды
The new holland workmaster 75 tractor loaded the detroit diesel 6v92TA into the mci mc9 bus. Swapping a bus engine is a big job but easier than a lot of pickup trucks.
I am always impressed with the 'Big' work you will undertake.
The out of frame rebuild could have cost as much as $40,000 all said and done. 10k ish to swap in a used engine.
@@BusGreaseMonkeyHow much more roughly to repower with something more modern? Not knocking the Detroit's, just curious.
A lot more and not worth it.
@@grabasandwichOne thing, a modern engine would require all of the gages on the dash to be replaced & rewired. Existing ones, wouldn't be compatible with the electronics on a modern engine. Then, the diesel exhaust fluid tank & system. The entire exhaust system. All together, probably 50 or 60k.
@@BusGreaseMonkeySad how the EPA has been trying to kill diesel. It's still the most efficient and effective way to move heavy vehicles.
Good to see a budget 6v92TA brought back to service! Amazing tech considering the base engine architecture dates back to the 1930's!
Those rusty balls ... you sure this MCI wasn't once buried at a Civil War site ??? LOL Good job New Holland ... been with this channel so long I can remember when all this was done down the hill in the dirt ... so proud of how far you guys have come
They're either acorns or hazel nuts.
I'll take a shade tree mechanic over an expert any day. Great video Scott. Always impressed with what you guys do.
We were definitely out in the shade of the trees on this one ;)
The Heavy Work Specialist BGM 💪
The tractor did a nice job getting the engine back in. Not any extra wiggle room inside.
I used to drive a 6v92 in a 1980 eagle coach...awesome!
You had the engine on chains on forks all OK watching video. I was taught that metal to metal slides, metal to wood brakes. Enjoyed your videos keep up the good work.👍 From the UK.
In Ireland we use wooden forks on our forklifts, and our train wheels.
Nice sounding motor!
Could u fit a big boy like that into a smaller bus like "Lenny" ? Great Job Men !! Stay Safe !!👍😊
Nice job to swap all the good parts hope this engine does well
Nice work Dr Detroit 👍😎✌️
That tractor is a game changer for sure
Seeing how easy that tractor put the engine in I bet made you think you wished you had it years ago.
For our fleet of couches we had a metal cart for removing engines. Just raise the vehicle up and set it back down so that the engine rests on the cart then just roll the whole assembly out off of the engine mounting rails the way that the factory had intended. Total engine and transmission swaps in about 8 hours.
Try using that cart in the woods
Damn that motor sounds good. I vaguely knew how a Detroit sounded before your I started watching your thing. I know now. Thanx.
Wow thats a big job Mr. Detroit
Ya'll do awesome work!
The "rotary Mufflers is very effective! 😊Holset turbo breaks up sound😊 2:47
My favorite muffler and a close second to resonators
Is it only your son in law helping you fix the buses around the shop Scott? Hope both of you stay healthy and safe including your wife as well.
Good job
I think i know where that coach came from. It looks like an old Loudon County commuter coach that made daily trips from Loudon County VA to downtown Wash DC.
Engine sounds great..you guy's made that look too easy, sliding it right in there.lol.
keep the clips coming
I did not know these motors had blowers along with the turbo.
It’s a two stroke engine; it needs the blower to get air into the cylinders.
💪🏼
Very cool! Do it with New Holland.
I know that some MCI buses like those that NJ Transit had/has were ordered with the 6V92TA but I but think it would be at least somewhat underpowered with that engine. I figure that the 8V92TA would have been a much better choice just due to having more torque. That 6V works OK in transit buses but those coaches are pretty heavy under full load. I haven't seen any figures but I imagine that the 8V would usually go longer between rebuilds vs the 6V.
Yeet!
Ah, my BGM fix!
I remember you saying what the blower did on these engines, but it's not what most people think it is. I know it's not a supercharger, but what is it?
On your 4 stoke engine the pistons travel up and down an extra time just to suck fresh air in and push exhaust out. The two stroke does everything in just one up and down but it can’t suck air in and push out the exhaust with the pistons because the piston stroke is used for compression to heat and cause the fuel to ignite then transfer the power from the explosion into the crank. The blower pushes the fresh air through the cylinder when the piston drops to the bottom. There are holes in the cylinder walls that the piston drops below and the blower air enters and exhaust valves open at the top of the cylinder to let the gases out. The valves close and the fresh air gets compressed on the piston’s way up again. One revolution of the crank every piston has fired. For stroke takes two revolutions for every piston to fire off. Up stroke down stroke does everything in a 2 stroke.
What is it about the sound of the Detroits? I can’t get enough 🧐
I think of the movie SPEED.
I miss seeing your son. Where has he gone?
Back to Indiana, I believe.
Y not reverse the trans mount bolt ,for easy insertion ?
Does anybody know what Tyler is doing these days? Haven't seen him in a while.
Needs a Scotch Brite wheel for cleaning the exhaust gasket surface. 4:22
We put it on the large belt sander
Any thoughts on a purpose-built wheeled cradle with levelers to remove/install engines?
We don’t do it very often.
Great videos as usual. However. I cannot express how quickly tragedy can happen with chain's wrapped around forks and tilting the forks down. I always mandated that c clamps on the forks be used to prevent the chains from sliding forward down and risking human body parts first and objects second. Cheap insurance.
We never tipped it until it was on the rails and ready to slide. Then we needed the slide to get it in.
Why do Buses need a Turbo and a supercharger ?
It’s a 2 stroke the blower is considered naturally aspirated. It needs it just to move the air in and exhaust out. Won’t run without it. The turbo increases the air. It’s not needed but gives better performance
The long answer (after Scott's explanation) is that in a 2-stroke design, you do not have the dedicated intake and exhaust strokes that a 4-stroke engine has. With a mere 2-stroke, it's hard to get a supply of fresh air into the cylinder before the compression stroke, and also after the power stroke, it's hard to get the burnt mixture exhausted completely before the piston is already on the upward compression stroke again. The blower (that you called a supercharger) makes a pressure through certain passages. When the piston in each cylinder drops below the ports in the cylinder liner, the power stroke has pretty much completed, and as the piston passes below those ports, the pressurized air begins to blow into and upward in the vacated cylinder. Simultaneously, the exhaust valves in the head, open. As the pressurized air from the blower pushes in through those ports, they perform 2 actions. One, they scavenge the dirty exhaust gases upward and toward, through, and out the exhaust, and refill the cylinder space with a supply of fresh air for the next cycle. Then, as the pistons begin traveling upward again and block off those ports in the liner, the admission of fresh air is halted to that particular cylinder while the compression and power strokes happen. During this time, other cylinders will drop down, be scavenged, and reset for their compression and power strokes. If the blower is not doing its job, the engine cannot function. Any Detroit 2-stroke engine can function with just a blower. The addition of a turbocharger, or multiple turbochargers, can improve the performance by giving the blower additional pressure to do the work of scavenging out the exhaust and really ramming in higher volumes of fresh air into the cylinders to be compressed. The injector can then admit higher volumes of fuel to work with the additional volume of hot, compressed fresh air, and you can then get more work out of each cylinder, equating to more power. A turbocharger relies on the hot exhaust gases being spewed out, to turn the "hot side", which directly turns the "cool side" which compresses fresh air. It is essentially free boost, because it uses the power of the escaping hot gases to generate more fresh air to be force-fed into the intake. Turbocharging helps in both 2-stroke and 4-stroke applications. Whereas, a Supercharger can be a more effective setup, a Supercharger is considered to be a parasitic draw, or a loss, robbing an amount of power directly from the engine in order to perform its function. Usually, a Supercharger will be belt-driven. In the case of Detroit Diesel engines, it is not considered as a "Supercharger", merely as a blower, because the engine drives it through a mechanical gear-driven linkage, and will not function without the blower working. Some other 2-stroke engines in the Detroit / GM Diesel family, use a highly modified turbocharger arrangement. Because the turbocharger cannot really provide much boost at lower engine speeds, engineers designed turbochargers that are directly driven by an over-riding clutch system at lower engine speeds to ensure that the turbocharger can provide the additional boost. When the engine speed picks up, the clutch is over-ridden, and the turbocharger receives enough exhaust gas output to work as a true turbocharger. As the engine speed drops off and exhaust output falls off, the clutch once again "picks up the slack" to keep the turbocharger compressing and contributing.
Watch out for those acorns…
Note to self: Never rear end a bus at speed.
Why do you not steam clean the engine before installing back in the bus would make a cleaner working area
I’ll have the owner stop by your house on his way home to steam clean it in your front lawn. It’s an environmental disaster. I don’t have a water recycling system to collect the grease and oil.
Who stuffed dirty marbles in there
Remove the engine doors , takes five minutes and worth getting out of the way
They were never in the way at all
Why not powerwash it clean why put it in a dirty engine
We did clean it. Did you not see the before and after. What did you want me to paint it and pretend like it got a rebuilt engine put in?