Detroit Diesel 2-stroke running backwards. 1950’s bulldozer accidentally restarted running backwards

[@dennisreeves632]

That dozer was built the year I was born and we have a lot in common. I don't start well on a cold morning either! LOL!

[@Chevroletcelebrity]

nice try on the humor but you are not funny 🤨

[@stripersniper1531]

Neat ,love the old machines. 70yrs old and still working

[@williampankratz600]

Any engine running backwards also is running the oil pump backwards and that isn't very good for any engine to run with negative oil pressure. Great that it is still working and doing a job, Thanks

[@terry3193]

That dozer is super sweet! I’m a big fan of older vintage vehicles and equipment. I just like the character and quality that they possess. I’ve restored several cars, trucks, campers, trailers, RVs, and mowers, over the past several decades, but no dozers or tractors. Thanks for sharing!

[@creativeloafer9792]

Crazy! First time I’ve ever heard or seen of a DD accidental reverse run. Whatta sweet ole machine that is! Love it!!!!

[@BusGreaseMonkey]

I don’t recommend it ;)

[@chrisjohnson4666]

Had a 671 in a fire engine do that while I was sitting next to the air cleaner... Very exciting....

[@inmate666]

Had a few do that over all the years.the valve timing is a little off but it'll run.2 stroke gas or diesel will run backwards if u spin it backwards Had a small block chevy in a boat that ran backwards. After putting in a new car engine every thing was off. Had to change cam..dist...starter...and oil pump .I had to show that one off to anyone that would watch.

[@FransvandenBergeMuziekschuur]

That engine is so strong..... idling and then pushing a mountain of dirt. It's really such an impressive design.

[@kman-mi7su]

When I used to work in trucking years ago, I saw that twice with a 1978 White Road Boss tractor we had with a 318 Detroit in it. I also saw a Mack R model do it once.

[@Hoosierdaddy-u2i]

We used to do that with multi fuel Duce and a half in the army. Put the truck on a hill, put the trans in 5 th high range. Let roll down the hill backwards and dump the clutch. Smoke billowed out the air cleaner, can imagine what the engine was ingesting pulling air through the exhaust pipe. We thought it was hilarious to have a 5 speed reverse.

[@haydona1845]

That ole was getting no oil the whole time she was running backwards

[@RV_Chef_Life]

That sounds like me getting out of bed in the morning!

[@JustsomeblokeinYorkshire]

Accidental backwards starting used to be a real headache with the old cartridge-start Field Marshall tractor engines. Really important to make sure the engine was in the right position before firing. My first girlfriend's Dad had a pair of Marshalls, one of which was still used occasionally as late as the 1990s when the farm was busy. Real pain if you started the thing backwards when you were at the far side of the farm and had no more cartridges (at the end of a long day when you were already dead tired!)

[@williamryan3503]

Our 720 John deer two cylinder diesel would occasionally start backwards if it wasn't spinning fast enough when the decompression lever was released. The oil bath air cleaner would splash out onto the cowling top, making a huge mess. If it ran long enough it would melt out inside of the oil bath. Love your videos> It reminds me of working on rusty old farm machinery with hand tools.

[@benjurqunov]

After I changed to electronic ignition, My Yamaha 2 stroke can run backwards too. At idle, Just blip it's clutch at the right moment. It'll stall & fire up again running backwards.

[@joec9680]

I’m pretty sure that oil pumps don’t work when spinning backwards. Running a couple seconds backwards won’t hurt it but I’m sure if you did it much longer with no oil pressure and damage will done.

[@BusGreaseMonkey]

Correct the gauge shows 0 oil pressure when it’s running backwards

[@1958johndeere620]

Yup I was yelling at a guy one day with his john deere running backwards. He thought it was great, I was like shut it off. The oil light was on. I even had a 3406B cat run backwards on me in a truck. I stalled it in a tough spot and kicked in the clutch, she kicked backwards.

[@HANZELVANDERLAAY]

​@@BusGreaseMonkeyold tankers ..have no reverse gear..and run the 2 stroke backwards..for reverse

[@vayabroder729]

I love how incredibly solid things were built up until a few years ago. Wouldn’t it be great if you could buy non disposable items again?

[@craigharness3156]

I was talking about that with some coworkers but how expensive and hard to find metal die cast toys everything is plastic

[@NBSV1]

Problem is people don’t want to pay the money for quality and if things last longer companies don’t sell as many. People have decided they’d rather have cheap Chinese junk and the companies are happy to provide it over and over.

[@vayabroder729]

@ you are so right. At the same time that they’re trying to alarm everyone about recycling and being green and the end of the world. That seems so hypocritical; if you make disposable stuff your landfills will be overwhelmed. Total double talk.

[@loyalUSguy]

Those smaller Detroits were very versatile power engines. Depending on the application, they could be built to spin either way. Put the flywheel on either end, or bolt the head on either way.

[@raymondgriffin1397]

Yes you can make it either a right hand or left hand rotation.

[@krankie49]

yup. At least you had a fuel shut off. I once had a backspin in a 1966 GMC "crackerbox" with a 318. Neat thing was it had a huge oil bath air filter so not only did it smoke like a Tennessee still in January, it spilled a ton of oil everywhere before I could pick a gear and stall it out. (Key location was a little weird)

[@theunknownkeyboardist6154]

I did that once with a Maxidyne which of course is a four stroke. It was a dump truck which I was backing into a soft spot--it almost stalled and then started running again. Smoke started coming out the breather and when I let out the clutch in reverse it started moving forward. I was young and had no idea what was going on--I thought I'd done some serious damage. But, I shut it down (manual fuel shutoff like your dozer), restarted it and it was like nothing had ever happened. I said nothing to my boss. Many years later I did the same thing with a Cat 3208. I didn't think you could do this with a four stroke, but there you have it.

[@Tay651]

Funny, I did the exact same thing with a 3208 myself. Almost stalled it pulling up to a quarry scale and when I pushed the clutch in, it started blowing dirt out of the air intake (LN7000 Ford) and had a weird sound to it. Shut the key off and started it back up. Never knew a four stroke was able to run in reverse🤔. Sure backflushed the air filter!

[@jeffbyrd7976]

I have seen that happen once before. A young man popped the clutch on a loaded semi tractor and smoke started coming out the intake.

[@brianferguson6278]

Watching the old dozer thread around the buses, hope a steering clutch /brake do not jam and swing the blade through a bus. With that old dozer I would crawl at a snails pace in those areas. Your Fire truck just placed a little scare the other day. Yet nice to see the old machines still doing a days work.

[@stevebot]

The blower becoming a scavenger is making my head hurt.

[@ericnorteman5341]

It is especially on a two stroke.

[@18robsmith]

Nice tame reverse start 🙂The most spectacular one I've seen was an old Bolinder single cylinder on a cold morning that decided to run backwards, throwing the guy starting over a hedge (I think the engine must have heard him boasting in the pub that his engine always started running the right way....)

[@tomhamilton9816]

MAN-O-MAN Does that thing have character and a personality all of its own! I can't figure out what movie it should have been in either Steven Spielberg's Duel or Steven King's Christian!! :) Thank you for sharing and the lesson on how two strokes can run backwards!!! I ❤ the video

[@bryancarlson3673]

Wow, Allis Chalmers built 29,255 of these machines between 1946 - 1955 !!! I wonder how many are still running?

[@joecummings1260]

We had three of them until the late 80's. 2 track loaders and a dozer. Bought all 3 at an estate sale and they were like new. Lady gave us all the original paperwork and manuals when we went to pick them up, When I was loading them her dog jumped up and rode on the machine with me. She told me the dog used to ride on it with her husband and teared up a little bit. It was a bittersweet moment even for the 23 year old I was

[@clinthowe7629]

I think you mean 1955 to 1974, thats the timeline of the HD6 dozer.

[@joecummings1260]

@@clinthowe7629 No we bought them at an estate sale in about 1980, We sold them late 80's early 90's

[@Phil197]

When I was a 18 year old car mechanic (didnt know anything about trucks) my boss told me to drive small gmc truck to a nearby garage, some how it started and ran backwards took me along time to get there with only two forward gears and 6 or 8 reverse gears I am retired now but I have never forgot that.

[@highrx]

We had 1 fire engine with a 8v71 in it and 5speed. On a hill with a stop sign, a little roll backwards and the engine would start running backwards. It was actually pretty embarrassing to do. The jump seat riders got smoked out for a few seconds.

[@whiteguyfifty]

Same thing happened to me around 1984. The 1970 American LaFrance with a 6-71 Detroit Diesel started and ran backward as I was behind the wheel about to respond to an emergency. I put it in 1st gear and let out the clutch before I knew it was running backward, and the truck began backing up inside the bay. I slammed on the brakes and it stopped - choking off the engine. After a few terse words from the Captain, I assured him it was in 1st gear. I pressed the starter button again and this time it ran correctly and we were finally enroute. I had heard this truck could run backward, but it blew my mind when it happened to me.

[@YouScroob]

Not limited to two strokes. A few years ago, I did the same thing with a Series 60 in a W900L while stalling out a 105,500 lb. hay truck on a hill. It started running backwards before I got the clutch all the way in, had lots of smoke out the air cleaners and a terrible sound. Shut it down let it set a minute then I started it right back up.

[@bertgrau3934]

I didn't know a 60 series would run backwards. That's good to know. I know if a Cummins goes backwards, the fuel pump will not pump fuel.

[@jlo13800]

They are on roller bearings

[@gtr1952]

I'm an early 1950's myself. LOL It just seems to run so well, no odd noises or complaints. It's begging for a little sanding/grinding, primer and paint. 8) Very cool, thanks!! Peace --gary

[@BusGreaseMonkey]

It’s beginning to be used hard.

[@gregculverwell]

I decades ago saw a Unimog engine being ruined by being tow started in reverse gear (forward /reverse is a separate lever). The oil pump diligently sucked all the oil out of the bearings!

[@TheWrench97]

Was a common event, driver backing into dock hits dock too hard and the rubber cushions push it back off with the engine running backwards...

[@mischef18]

Now that is cool bro. Safe travels y'all. Ken.

[@time1800]

Handy when reverse is out.

[@dduckman1423]

I heard ofa Massey Ferguson running backwards, They were tow starting it and had it in reverse by mistake. Yes the air intake becomes the exhaust and the exhaust stack becomes the air intake.

[@maxpuppy96]

Correct me if I am wrong but those 2 stroke Detroits were designed to run either way, the reason being is when they are side by side in a boat it makes the screw for the propellers in a boat.They were basically Marine engines.

[@1958johndeere620]

They have to be designed that way, oil pump, injection timing ect. Most smaller boats now have the reverse direction in the transmission so both engines are standard rotation. Big boat engines actually stop forward rotation, kick timing over and re start backwards rotation to reverse the boat.

[@2StrokeDriptroit]

Lol 😆 yup i was running backwards! Just so you know, ANY diesel can run backwards, even a 4 stroke which will also exhaust out the air intake and intake via the exhaust. The smoke was actually because the rain flapper was being sucked shut because it became intake and was choking off air for combustion! I LOVE ‘y 1940 Gray Marine badged on the rocker cover, 2-71! She runs like a fine watch and is good on fuel and sounds like yours! Awesome stuff!! Merry Christmas from Rick Delair! 😊

[@dduckman1423]

My father talked about how the old single cylinder tractors [Lanz Bulldog type] could be dangerous when plowing. If they stalled the flywheel would rebound and restart in reverse, the old plows had long handles on them . The tractor moving back rapidly onto the plow the operator could be impaled on the handles.

[@reedsilvesan2197]

Yes, never under any circumstances let one run backwards, shut it down immediately. Reason; the oil pump is also running backwards therefore the engine won't run lung without oil.

[@misters2837]

Tell us you don't know squat about 4-Stroke Diesels without actually saying so. - You can spin 4-stroke diesel engine backwards all you want, you will *NEVER* get so much as a "fart" out the intake. - Two Strokes are unique in that respect. That's the facts.

[@isfeldt34]

What was interesting is listening to the way the blower started winding up in reverse.

[@bertgrau3934]

Perhaps some people dont know this, some of the older, Cat, and Mack's could run backwards too. Bogg the engine down below idle speed push in the clutch and it could kick backwards and restart.

[@bigun447]

We would get one of those 2-week wonders, who had a 2-week CDL training before they bought their CDL. They would be driving Detroit 2-stroke powered semi trucks and when they finally backed into the loading docks (between the yellow lines) they would hit the big rubber bumpers. Those would stop the semi and occasionally one of those Detroits would start running backward. Panic would set in and smoke coming out of the engine hood, the engine sound would be much different, and the oil pressure light would come on. The dock foreman would call the shop which was next to the dockyard and say another Jimmy is running backward at the dock. I would hustle over there, find the emergency stop shutter control, and shut it down. The 2-week wonder school never taught about the emergency shutdown procedures. They tended to be back off the clutch when the engine reversed and in their excitement, they would release the clutch a little bit and the truck would start to drive away from the dock even though it was in reverse. Most ship engines are 2-strokes that are designed to be reversed as they are directly hooked to the prop shaft. That is one of the reasons that the ship hit the bridge in Baltimore. The pilot could not reverse the engines quickly because the propellor shaft had to spin to a stop before the engine could be reversed. In their case when the generator system failed, the electric oil and coolant pumps stopped and that shut the engine down. No thrust and the rudder did not have much authority and could not turn the ship.

[@AlisonFort]

She’s lovely❤

[@tomromanski7925]

That happened to me in a truck with an 8v92! I stopped short cause someone snuck around a corner and I didn't see them. I slammed on the brakes before I pushed the clutch. The motor stopped but then started again as I was pushing in the clutch. I released the clutch in a forward gear and the truck went backwards. It was a freaky experience. I shut it off right away and restarted, and it was fine.

[@davidowen888]

Love that thing, lil mighty mite💪

[@martinbarnes6853]

I drove an MCI 9 series coach that fired backwards once. No oil pressure, smoke out the side of the bus (air intake).

[@santaclause2875]

That's RAD, man !!!!!!!!!

[@edsyphan3425]

Had an old Yamaha dirt bike that would run backwards. Turned out the ignition pickup was bad, and it over advanced

[@stevebot]

Modern fuel injected 2 stroke snowmachines (snowmobile, skidoo, snowgo… whatever) have reverse, it’s a button and when you press it, the computer cuts the engine until it slows to do a reverse rotation due to compression, then it brings fuel and spark online and you’re running backwards.

[@leondown6869]

Had a Bultaco dirt bike start backwards on me...dumped me in a hedge... in front of an audience naturally ....they all laughed.

[@larrybl]

Did that once with a Duce and a half in Korea on a steep hill.

[@joecummings1260]

Running backwards you have no oil pressure. I saw a mack do it once too. Guy was going up a steep ramp and stalled it then the smoke coming out of the air cleaner, Same with a 6-71 in a dump truck. He was backing up a ramp and stalled it

[@melmckenzie1176]

If a Detroit 2 stroke has an oil bath air cleaner and you turn it backwards you can empty the air cleaner out the stack. I did on a 66 Freightliner with an 8-71. What a mess!

[@melmckenzie1176]

Btw I meant the fresh air stack

[@johnnyfisher8412]

If you think that’s cold, you don’t want to move to Lincolnshire. We was -2 last night from Johnny Comwell.

[@americanrambler4972]

A 2-71 2 cylinder. Doesn’t sound much like the more cylinder models. First time I have seen a video of one running backwards. I did not realize they spit the exhaust back out the intake when they did. I guess that’s because the blower is also running backwards sucking the air out of the intake ports instead of pushing it into them? I was alway under the impression they could run fine in either direction. It was just a matter of the direction the starter turned the engine.

[@joecummings1260]

The reverse rotation ones use a different gear set in the timing cover so all the stuff like the cam, blower, oil pump run the correct rotation even though the crank is spinning reverse. I

[@wacholder5690]

9:33 This misbehaviour of two-stroke diesels lead to severe and fatal accidents with e.g. the Lanz Bulldogs. These are single-cylinder crud-oil diesels with >350 cui (up to 10.3 liters) displacement. Under heavy load as with towing waggons up a hill the engine could stall - and refire backwards, which is usually the start of a disaster given weight and inefficient brake systems. The early models had to be stopped and run in reverse anyway, since the gearboxes had no reverse gears. Trained mechanics could achieve this with stopping the fuel supply, starve the engine and - while observing the flywheel - open the fuel valve again. The engine then coughes, blows a cloud of smoke and runs in reverse. The design of the engine however is different from the Detroits. It only has side ports and no exhaust valves and sucks the fresh air through the crankcase - like a petrol two-stroke.

[@greggolszanski1621]

I have a Allis Chalmers hd6 track loader I would advise not leaving the master clutch engaged while the machine is off they will stick to the flywheel if the machine sits to long my cousin had a hd5 track loader I used to run when I was in my youth

[@leskeegan9033]

I have seen that happen on a 671 inline once where the engine was lugged down and went backwards. It sounds like it is coming apart. It spits and sputters.

[@randyscott8660]

I had the same thing happen with a 930 case tractor climbing a steep grade..It stalled then rolled back and fired right up again blowing all the dust out of the air cleaner..I couldn't figure out at first why all the forward gears were reverse and reverse was forward..I shut it off and restarted it and everything went back to normal...

[@RobertBancroft-fo8bz]

I would guess rather than the tank being changed someone updated the paint and logos trying to make it look like an HD6.

[@danielsmith9500]

My 90 Mack with a 350 Mack engine would run backwards If u got it in a bind and push the clutch right before it died it would start blowing black smoke out the side of the hood. First time it ever did it I was In 1st. I eased off the clutch and it started goin backward. I realized what it was doin. I killed it and fired it right back up and it was good to go

[@charlesroer972]

Little crawler does good for a 56.2 horse engine . Enough gearing to overcome load . Unless u want reverse rotation. boats run a right rotation and a left rotation in same boat . Want to see hard to start. Shut off EMD engines without block heaters on . Had ore trucks with 645E V12s in 10 trucks 3 locos with v16s shut down on Christmas and new years took double shift to heat cause heaters weren’t turned on . . Little TD5 did just fine !

[@martyp7134]

I had heavy equipment mechanic s friend s they said they made right & left rotation 671 Detroits

[@BusGreaseMonkey]

My bus is a left hand rotation detroit diesel 6-71

[@Blazer02LS]

They made left and right in many of the DD series. Common use in boats so that prop walk was eliminated.

[@richardpenning9135]

Never turn the fuel off in a Detroit, it's just a waste of cranking. Cranking with the fuel arm also warms up the fuel in the cylinder, and that will at night before the injector spray

[@vicmerle57]

I have a question. Near the end of this video when the music is playing(great song by the way), at 13:47 a image comes up of a fuel filter with this carmel looking goo on top of the filter. Reason why I ask is, I want to watch that same video of yours to find out what the result was regarding that goo. Since my father in law has the same problem with his 1967 John Deere JD500 backhoe. It stopped running. I changed the fuel filters on it, and discovered this goo coming out of the filter housing. Also found it in the bottom of the fuel tank. Assuming now, it is throughout the entire fuel system. Cranks but will not start. No smoke from the stack. Only a few months ago it ran fine. I’m stumped. My father in law is 91 years old. So I have been helping him with a lot of things around his property. He is battling lung cancer, and the chemo and radiation kicked his butt. Thank you in advance for any advice that you have. And please let me know which video to watch. Thank you.

[@no-tb2ur]

When the engine is reversed there is no oil pressure and must be shut off immediately. It can also happen to a 4 stroke motor.

[@alanarmstrong2323]

I seen a Mac cement truck do the same thing pushing mud ,motor stalled running the same way

[@wrenchbender01]

If a 71 series will not start, it was time for new injectors a long time ago

[@JohnSmith-qi9qs]

Neat. I didn't know it would run backwards like that. That would be really bad on a water cooled marine engine!

[@garyplewa9277]

How is that even possible, given the blower is unidirectional? Would it be sucking fresh air thru the exhaust valves due to the blower creating a vacuum at the ports?

[@danrandall794]

50 years ago that happened to a buddies motorcycle. He went to take off and the gas tank hit him in the nuts. He couldn't figure out what happened at first. Very weird.

[@1toonhead]

I've managed to make a old Hino truck run in reverse once. I think I did it from a small hill start and not having enough revs. Freaked me out a bit.

[@mattywho8485]

Funny that good size dozer has a 2-71. My old JD440 had a 2-53, but was quite a bit smaller than that machine.

[@halpadgett3166]

We had a JD440 that had the 2 cylinder Detroit. I was wondering what the difference was. I never had it run backwards, but it did run away with me once when I was pretty high up on a windrow because it was sucking so much crankcase oil up into the cylinders. Dad had it rebuilt after that excitement.

[@sethworden6468]

This short backwards run seems harmless but isn’t the oil pump also turning backwards and no longer providing oil pressure?

[@fabiodriven]

That's correct, no oil pressure running backwards.

[@aaaaaaa9194]

kids had a little air cooled 2-stroke dirt bike it would sometimes backfire when starting and run backwards.... let clutch out it would be in reverse 1st gear lol

[@LORFCASTER]

Looks like the air filter just got another couple years of life put back into it after running backwards :) :) !!!!!!!!!!!!!!!!!!!!!!!

[@nspro931]

Any engine with a cam operated injection system can theoretically run backwards. I know a Cat 3208 can run backwards as well

[@fabiodriven]

It's possible with four strokes as well. My boss started his 8.2 Detroit backwards once.

[@americanrambler4972]

After watching you drive over to your new bus paddock parking area, I was looking at your property on google earth trying to figure out where you put it. It’s not yet showing up on the photos of your mountain. You pool is though. It’s got to be a pretty darn big area for you to have room for more than 6 buses. And it’s on top of the hill.

[@americanrambler4972]

Is it normal for diesel exhaust smoke to pour out of the right side of the engine while it’s starting and running at low rpm? That’s one leaky exhaust system!

[@BusGreaseMonkey]

March of 22 we cleared that part of the land. kzbin.info/www/bejne/d2PVpXywa7-aZs0si=WDGuvgxZzI3eSHyQ google uses two old images of our property. They split it in half if you look at the tree seasons it’s obvious.

[@rctopfueler2841]

Yep when the sniffer becomes the puffer you know its going backwards and yep even a modern 4 stroke can do it like my UD 6 cyl in a ih 1800

[@merylpelosi8485]

We had a 108 Link Belt with a 2-valve 4-71 that would run the engine backwards if you killed it while trying to boom it up at an idle with a load on it. No big deal. Lock both drum brakes and pull them into hoist.

[@keithammleter3824]

Difficult to understand how the engine could continuously run backwards, since the blower would suck air out of the cylinders instead of forcing it in. The proof would be if he let the main clutch out and the dozer ran backwards - but he didn't. Interesting that the smoke coming out the air cleaner took some time to begin and built up slowly. If the engine was running backwards, one would expect the any smoke to begin immediately and be in quantity proportional to RPM.

[@BusGreaseMonkey]

The blower sucks air into the cylinders through the open exhaust valves. It was running backwards. Watch the oil pressure gauge at 0 when it was running backwards.

[@keithammleter3824]

@@BusGreaseMonkey Ah, yes - the open exhaust valves. Effective compression would be low, since the air in the cylinders would begin at less than atmospheric pressure instead of above atmospheric - that explains the smoke. I cannot make out the oil pressure gauge though.

[@TheNearlyFamousMrHobby]

You now have the dozers name.......Backwards! LOL......

[@jamesconn7311]

I have had an R model Mack run backwards , exhausting out the breather !! Dumping a load goin up hill she died & rolled backwards a little , started running backwards , thought i'd done blowed the Ol Boys dump truck !! haha haha He told me what it done , i was relieved , i killed it as soon as i seen something wasnt right !!

[@lloydrobinson7081]

keep the clips coming

[@artieautry5035]

GMC ran 8v71 left turn backwards motor in the gmc 4107 and 4905 buses

[@reedmartin6614]

Also the 4106

[@itsmephil2255]

70 years old, just think how many people have used that dozer, all the work it's done, and it's still going strong How much are new tracks??

[@BusGreaseMonkey]

The tracks dug in enough to kill the engine I’d say they are good enough

[@itsmephil2255]

@BusGreaseMonkey few more years left on them 👍🏼

[@arlynkraft3581]

Any 2cycle diesel can run backwards if air is not cut off they will destroy themselves. Turbo 4 cycle can get oil from a bad turbo and run away in a forward motion

[@TimothyMichaels]

Would that dozer be strong enough to pull a bus up your driveway, looks pretty steep.

[@larryward1082]

I'm 74 years old and I've worked on caterpillars and I own a very old caterpillar that I think this D4 and me are the same age yes that engine runs backwards you don't have no oil pressure

[@dougnorton5143]

Reminds me of the early days of golf cart engines, to go backwards you reversed engine rotation. But would I be wrong in thinking an engine not designed to run backwards would have its oil pump pulling oil FROM the bearings?????

[@tonyodempsey6755]

4 strokes can run backwards if you let the engine stall while pushing stacks and dont hit the clutch fast enuf. Gotta kill fuel when that happens bcos Oil pump is in reverse.

[@EricaMTB]

I have been told that there's no governor when rotating backwards. I don't know if that's right.

[@thefretfiend]

When that engine runs backward, so does the oil pump. Not good.

[@063317Art]

I had that happen on a 8v71 while trying to start up hill.

[@cupitosbornejr.7905]

So for the time it was running backwards you could've had a few extra reverse gears

[@BusGreaseMonkey]

And no oil pressure

[@santaclause2875]

@@BusGreaseMonkey Oil vacuum......not an ideal situation.

[@CanizaM]

Will have almost no power since injection timing would be really retarded (it's normally advanced, which is why they can run backwards if the engine slows down enough to have the ignition happen before the piston gets to the top.)

[@lumberjack24.a.theoldschoo24]

Those 271 run and perform best at full throttle every time I've ever had my HD 5 after the best thing you can do with a 253 or 271 is put the thing completely full throttle and run that way

[@richardjulien8745]

Hi Scott,do you still have the intention to put back the grill in front of the allis chalmers? that piece of machinery is awesome ,keep the good work from Richard.

[@jrt2924]

I suppose you could put slightly larger to hop up the pony count? Or is the diffrence so small/unnecessary on 2v71?

[@Wayoutthere]

What are the ramifications of it running backwards? I guess the oil pump and water pump then also rotate backwards?

[@cupitosbornejr.7905]

Oh crap

[@38911bytefree]

Starrted to rev happily. Is the governor doing anything when backwards ?

[@ZuluGoatHerder]

Hey BGM, how in the heck, my brain hurts… does the blower become a sucker (scavenger) when running backwards so in effect still achieving the same result?

[@americanrambler4972]

Is it normal for diesel exhaust smoke to pour out of the right side of the engine while it’s starting and running at low rpm? That’s one leaky exhaust system!

[@BusGreaseMonkey]

There is a hole in the bottom of the manifold. Nice because rain water down the exhaust will not enter the engine

[@Joeilliano]

Is two stroke diesel engine is better than 4 stroke engine?

[@t1259sw]

Scott, please correct me if I'm wrong the engine rotation CW of CCW is determined by the front engine gears and the starter?

[@geraldcagney5926]

Did I miss an episode where you get those fleet of busses from?lol

[@timf6916]

Did not know that.