Running the Detroit Diesel 671

A 6 cylinder Detroit Diesel 671 running.
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[@deview123]

You just can't beat a good ole Detroit diesel.

[@galvatronleader3358]

Music too my ears!!! Luv to hear these monsters scream❤

[@buckrowley1506]

how could you not want that one "i just have a little truck project nothing too fancy"

[@malcolmmarzo2461]

I drove an Attack Troop Carrier with two Grey Marine 671's in Vietnam. It was a converted WWII LCM where you had to handle 25 tons deftly using two D-handle four-foot joysticks. I would twist for power on each engine and shift forward or backward for differential thrust. You could pivot the beast very gracefully when needed. Like coming into a pier against a strong current. Many a night sleeping next to them while the night watch drove going up rivers and canals through the jungle. The 671 sound and smell is still hammered into my night memories. I remember dreaming about home then waking up to the nightmare - just the opposite of normal life.

[@Prototheria]

As an OIF and OEF vet, that last part really hits home. Speaking of which... welcome home, Sir.

[@andrewking9761]

God bless you. That must've been an experience. Detroit engines have their own sound and smell. In fact you tell it's a Detroit up ahead driving on the highway just by the smell of it. A Greyhound bus for example.

[@xxch4osxx]

@@andrewking9761definitely agree, those detroits have an exhaust smell that was completely different than any other diesel.

[@RJ1999x]

Even wears a Detroit shirt! That's dedication

[@richardswann5300]

I love the old Detriot Diesels. I had an 8V 92, full 475 hp to the drives. Had a 13 speed overdrive and 355 rear ends. Long time ago ! It was a fast old truck and nothing beats the sound of a screaming DD ! It drank a lot of fuel though !

[@TomasAWalker53]

Before commenting about no coolant in the engine. Remember these people are diesel surgeons. Very proud of the abilities they have to tear one down to pieces and rebuild into a Swiss watch of an engine. Learn what it is you are talking about before commenting. Please.

[@kurniawanapras]

Diesel engine running colder than gasoline, i have diesel car once the radiator exploded in the middle of the road, the engine still running about 5 km with only rely on oil cooler

[@TomasAWalker53]

@@kurniawanapras Good example. However, diesel cars have much smaller engines with thinner engine blocks. Hopefully, that won’t happen again, but if it does? Just keep an eye on your temperature gauge to make sure you don’t “cook” your engine.😩💥👍🏻

[@TomasAWalker53]

@@kurniawanapras Also, even a gasoline engine is able to run for quite awhile with no water in the radiator. Water is circulating inside the engine still and will help for awhile too. If you have a trustworthy temperature guage or overheating light, then you can keep moving. This is why I prefer temp gauges with the temperature numbers.

[@edwarddelacruz9131]

Es un 671 nonisesrita agua

[@dozerfarms]

It's a Detroit! Detroits don't need coolant

[@irongoatrocky2343]

theres a reason these were called' Screaming Jimmys' cause they always ran best up against the governor!

[@1armedguy4]

Thats a sweet sounding diesel engine !

[@calebdrake9953]

Sounds like a good boat engine

[@supercuda1950]

That 6-71 blower added big hp to many an engine and when put on top of a hotrod engine the looks could kill. Today many different and larger versions are manufactured to the delight of many a hotrodder. As the old saying goes, Injection is nice but I'd rather be blown. Beautiful engine and sound.

[@MrTheHillfolk]

Vid title said Detroit diesel , and running , so I'm here ❤️

[@Creeperboy099]

Very clean- good job at restoring it

[@ronniehahn1885]

What memories. Back in 1977 in school was running overhead and rack on one of these. Just set on one cyl and one of the students turned engine and before I could remove my hand a rocker took part of the tip of my ring finger off. Lol live and learn finger tip does not go between rocker and valve stem tip

[@juanasanelli6831]

El mejor diesel del mundo ...

[@4321grp]

It's so quiet that you can't even hear it run

[@wesleyagrela6449]

Beautiful

[@MrJeep75]

Very nice

[@carlosandresvidal4226]

Hermosos motores muy fieles para tenerlos en lugares extremos trabaje con unas grúas link belt 48A puestas en plataforma petrolera y tenían motores Detroit son increíbles esos motores con temperaturas bajo cero ,no te abandonan 👍👍👍

[@luisfernandogarciasanchez2175]

Tengo un 4-53 en una bomba de agua ...6 meses arrumbado y hace 3 días lo arranque a la 1era....están hechos para la mala vida esos motores.

[@richardmorton1310]

Still love 6-71's. Drove a 1972 GMC 9500 with a 6-71 hauling steel from the Indiana mills to metro Chicago. With the governor opened could run 70 plus all day with a 50k load. Tractor and 28' trailer scaled at 22,500 with half fuel.

[@andrewking4885]

The best 6-71 story I've read on Ytube in a truck application. What type of steel? and from what I know about 238s you would have got about 6 MPG. I'm from Australia and that's what they got over here 6.5 : 7 MPG but our gallons are a bit bigger than US ones 3.8 against 4.5 The 10sp Road ranger was used a lot behind them as well.

[@richardmorton1310]

@@andrewking4885 Coils, Tin plate, plate, (Bethleham Youngston) merchant steel - bars, rounds (US Steel Gary) Import coils, some rebar, and some coil ends. Coil end , a real pain in the butt. Road ranger as the predominant trans although there was lone 13-speed on an old 9500. I think the fuel was 70gal X 2. Would open the governor up to 2,400 and they would run all day like that. Without paying too much attention to fuel as I was an hourly driver, half fuel would get me through all day and then some. A high mileage day would be around 150--200 miles and might be two trips to the mill and delivery or just one delivery and back to the barn.

[@andrewking4885]

@@richardmorton1310 Thanks for the information. Merry Christmas 🎄

[@kerrynye3752]

I want a 4-71 to put into my 1-ton truck!

[@thomasshirley5046]

Damn thing ticking

[@Ima184mm]

I want to use it for my off-road SUV

[@calvincrews3885]

I would like one of those to put it in any commercial vehicles and add a HT series Allison Transmission like a Peterbilt 310 - 520 Cab over engine or Volvo Autocar or even White/GMC cab over engine with a Conversion kits available in a Garbage trucks either a Rear loader or Front loader or side loader models just for kicks

[@4321grp]

A few years ago, most garbage trucks had 53 series Detroits in them, and Detroit Diesel was standard equipment in GMC trucks.

[@wrinkly_senate7311]

Eaton 10 speed

[@craigkeller]

I can smell the exhaust.

[@fiberrabit8229]

What overhaul kits do you use?

[@davidsalazar0412]

Hello, good afternoon! I would like to know what is the transmission model that they are using in this engine.

[@houstonbrown3450]

Bring back the Detroit in GM trucks 2500 and up!!

[@alaskagot_class2489]

is this detroit a right or left rotation?

[@alternatemusicaddict5226]

Detroit diesel the fastest way to convert diesel fuel into noise

[@WogChilli]

And for petrol it’s Harleys

[@curtchase3730]

If it wasn't for DIESEL on the valve cover, I'd think it was a gasser! Nice.

[@wrinkly_senate7311]

It's a 2 stroke

[@thomasglynn2282]

Man I hope you're kidding

[@MrTheHillfolk]

Love my Detroits. Sounds like a full race diesel right from the factory 😁

[@elliotcapson3101]

@@thomasglynn2282 about what?

[@ArielCantero-ho4tz]

Wow

[@1_fishin_magician153]

coolant ?

[@robertleftwich1122]

I have boxes of new interior parts for the 671s , would love to sell @ 50%

[@BillyLintzenich-wf7sk]

You do huh?

[@coreyellisart6877]

Is it a reverse rotation engine?

[@philbell7952]

We had a dyno.

[@KMURRAY1841]

awesome video. how were you able to run dry without blowing out the impeller?

[@Veikra]

no belt

[@kristoffermangila]

All we need now is a Valentine tank...

[@northrockboy]

Things just revs out like a dirt bike.

[@caribbeanequipmenttraders238]

Is this for sale ?

[@ablam8]

How much did they cost new, back in the "60's? What do you sell one like in video today?

[@Alpi-yn5jk]

2500$

[@zoltandomjan4764]

2 Stroke Detroit Diesel Series GMC-6-71 Engine!!! CCCP SZOVJETUNIO SZOVJET KRAZ-214B TRUCKS DUMPER!!!YAAZ-204!!!YAAZ-206=Detroit Diesel Series GMC-4-71 GMC-6-71!!!YAMZ-236 YAMZ-238!!!

[@burhanchannel7758]

👍👍👍🙂🙂👍🏻👍🏻

[@Simo-nk1oq]

Two stroke

[@burhanexee9390]

This sound

[@dp.oennismaurer205]

Nice job!!! The two strokes were very versatile for many applications. Other two strokes didn't work so well as the G.M. diesels and were quite complex. Does anyone know how

[@dp.oennismaurer205]

To my question, does anyone know how the GMC diesel got the name Detroit Diesel? The answer is International Harvester coined the name, because it looked bad to have a (GMC) diesel in their trucks.G.M. was a competetor co. selling Cracker- Boxes, Astro 95's & Chevy Titan 90's. International was the biggest purchaser of two stroke G.M. engines for their trucks.They coined the name from were they were made, Detroit Michigan.

[@pinecone9045]

@@dp.oennismaurer205 All the Detroits I overhauled were in Internationals well almost all of them.

[@tyronescott8704]

Put 750 thousand on one could not hurt it keep it full of oil and run the shit out of it last forever .had 9500 gmc with 238 good truck.

[@TheBlueScarecrow]

Let's see how long we can run this beauty, without coolant, before it seizes up.

[@TomasAWalker53]

@Basedand Chadpilled It is. Even a small block gas engine will not overheat if done like this was.

[@damiandiesel1]

Full of coolant. it has fresh water cooling with heat exchanger. it will run much longer than video without even getting warm.

[@TomasAWalker53]

@@damiandiesel1 Your mistaken about that. If you watch again, you'll see the raw water pump is not attached to a source of any kind. It wouldn't have any coolant in the engine as this is strictly a first start after rebuild. Also, there isn't a heat exchanger mounted. It would depend on whether it will go into a truck or run a generator, in which case it would have a radiator. Only in a boat would it be hooked up to a proper marine heat exchanger and coolant added. I think the statement made by Blue Scarecrow was a joke based on ignorance. Obviously, the shop is in the business of rebuilding engines at a cost of thousands before resale and would not risk damaging the engine at this point. So, the lesson is what you saw were professionals running an engine without coolant. It would have had oil installed which has its own cooling properties for a while. I have seen many, many diesel engines tested this way without issue. Unlike a gas engine, diesels will run cool at idle speeds or even at a 1000 rpm. Like sitting at a truck stop or idling at a dock. Temps will only be about 150 degrees. On my tugboat I'll engage the transmission while tied to the dock and increase engine speed to put a load on the engine. This is better for the engine and does increase engine temp to about 165 degrees.

[@damiandiesel1]

@@TomasAWalker53 No, you are mistaken. This is a marine engine application. The heat exchange is mounted in front with the radiator cap on it, The raw water pump is not turning and both raw water inlet and outlets are open because there is no raw water and he doesn't want to burn up the RWP. The engine is filled with coolant as is the exhaust manifold, but yes, there is no raw water and if it runs at no load for 15 or so minutes it wont need any. i am a 57 year old Detroit Mechanic and shop owner, I 'm pretty sure I know.

[@patrickhorvath2684]

@@damiandiesel1 Thank you for your input. I'm looking into buying an older steel hull vessel (60+ years old) with twin 6-71s. Should I be concerned about the age ?

[@ThanhThanh-ix9pn]

Gây ok

[@marlborodemoura1377]

Qwantoz hp? ?

[@luckylascala7572]

How much is that bad boy

[@mubeensakharkar4369]

👍👍👍 how much

[@myhockeyplayers]

love the sound.... just makes me cringe with no water running through. I know it is fine just a little cringe

[@stevejantke6769]

Glad I'm not the customer getting that engine, my warranty would be null & void if I ran it without cooling !!!

[@nodak81]

That engine is huge, running it for a couple of minutes hardly got it warm much less to the point where it actually needed any cooling.

[@4321grp]

Steve Jantke Steve Jantke, I agree, For my engines I cut the top out of a 30 gallon barrel and brazed a piece of new exhaust pipe in the bottom just the right size for a coolant hose; I used that for my "radiator" when I ran them on the floor prior to installing them in the vehicle.

[@charlesbidwell82]

It's a marine engine has heat exchanger tank in front engine coolant probably in engine no sea water cooling

[@robertsawa3407]

Big tank in front is for coolant!

[@emoryjenkins6481]

These engines move so much air at an idle that they actually cool to below operating temp if idled too long

[@Baernstein123]

what about cooling?

[@TomasAWalker53]

Not needed for short start up and run test.

[@paulk9985]

It's already so cool.

[@gerardorodriguezrodriguez4703]

Que clase de transmisión es esa ??

[@jollyrogers7666]

Transmisión? Yo sólo veo un motor sin transmisión.

[@BillyLintzenich-wf7sk]

Sweeet

[@kerrynye3752]

You don't even have any coolant running thru it! Where's the radiator and coolant supply?

[@gustavolopez3791]

Just a quick run...

[@thuanbuimy2418]

HP .?

[@patrickhorvath2684]

Torque is what's important.

[@robertgarren7684]

Missing on one cylinder

[@philbell7952]

😆🤣🤣 Your gonna warp the eng.

[@cosd3799]

no water cooling........

[@danielthrasher7052]

Its only running on four cylinders

[@edwu8253]

Better than porn 👍

[@maxpayne2574]

Dirty screaming no torque junk

[@calebdrake9953]

Why ?

[@jrhackman7414]

When I was growing up in the 80s there was still quite a few in use in trucks. I know some people liked them, but mostly that’s what I heard you had to run them wide open because they have no low-end torque, And they leaked a lot of oil. Now everyone talks like they were great. I can see where they be all right for boats or pumps or generators.