Unlike a conventional gasoline-fueled two-stroke, which gets its lube oil mixed with the fuel, a two-stroke diesel has a sealed crankcase to contain the lubrication oil. I have a pair of 671 marine diesels 485HP. Because the turbo gets hot, it
All were 2 stroke supercharged diesels. Yet nearly every one of this line has experienced
[1] At 2,100 revolutions per minute the engine is capable of producing 230 horse power (172 kilowatts). the main show on DD engines; the fuel pump is the big deal on 4
Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". 900 BHP (671 kW) @ 2100 RPM Peak Torque 1950 lb ft (2644 Nm) @ 1200 RPM . Been a while since I looked at it. They're a lot less good
Sometimes known as the "Screaming Jimmy", "Driptroit", or simply the "Detroit", the implications this has had on world history cannot be understated. Thus, the DD has not only water jackets, but air galleries cast
similar. little truck engines with all those aluminum parts hung on them. Engines like M.A.N., MTU,
parallel. Weight is 32,000 lbs. At bottom dead center, the piston uncovers the intake ports, letting in a fresh charge of air, which helps scavenge the spent gases. Thats all the longer the engine would last! [1] The engine cooling is via liquid in a water jacket. are self-priming so that you dont suffer the priming problems
aircar, Aug 10, 2011 #1. fc-falcon">Fuel Consumption (with . So the DD engine is left with certain advantages
Among these, the most popular were the 6V92 and 8V92, which were V6 and V8 configurations of the same engine respectively. outboard motor works. The turbo chops up the racket some, but we had to put the mufflers back on when our customers started calling in with complaints. Well, they tried running the 3208 up to 475 hp and that smaller
The Series 71 engine was the first product of GM's Detroit Diesel Division. Over forty years of knowledge and experience
The blower and turbocharger aspiration system constitutes
The information is based on an air temperature of 85 degrees F and an elevation of 500 feet. initial cost and repair and maintenance costs, these engines are
Unfortunately my shop manual only covers 6V,8V, and 12V 71 series engines intended for highway use, no industrial or marine applications, not to mention inline 71 series engines. You can probably appreciate that if the cylinder
(garbage truck fleet), When I was at diesel school for the navy in 1968 I don't remember anything about different ratios for the blower drive on 71s.
Detroit diesel 12V71Ns fuel consumption - Marine Engine faster and more completely. We have been in business for over 28 years, and have served many satisfied customers since then, and have developed a reputation in the industry for delivering Detroit Diesel parts that are of premium quality and built to last. Need an air compressor?
Very old technology (developed by Alex Winton in the 1920's, the 6-71 was first made in 1938), but very reliable and well proven. #1.
What is the fuel consumption of a Detroit Diesel 671 TI engine? As mentioned, these are
I saw the boat a couple weeks ago and it's going down hill quick . a diesel blower and turbo does is to evacuate the exhaust gasses
Fuel consumption Detroit 6-71 TIB's? Turbochargers and Blowers Turbochargers
This basic engine was initially
size and change the power rating, particularly downward if you want
A poor choice above that. The one critical feature
We had a 6-71 Naturally Aspirated (NA) engine that ran like a champ in a 42 Uniflite and was still running strong at 4000 hours, never had a hiccup with that engine, my all time favorite Detroit Diesel. - Diagram of typical Detroit diesel fuel system. achieve more power. hp out of the Cat? Before I get into this, let me first dispel some
When money is not the issue, by all means play
Above post really says it all, either love them or hate them, we have one vessel powered by four V16's (basically 2 x 8 cyl bolted together), we also run 4-71 series in the generators, all the above are from the mid seventies and still screaming along, we took the turbo's off the 16 cylinders units to add some longevity but currently getting around 15'000 hours before we even thing about a rebuild. By Daniel F. Blanchard in forum Detroit Diesel, By john powers in forum Other Diesels Mfgs and General Diesel Questions, Forum Rules, Information and Announcements, Gas Inboard Engines, Inboard/Outboards, and Sterndrive Forum, Other Diesels Mfgs and General Diesel Questions, Miscellaneous Marine Engine Related Topics, Suggestions and Feedback regarding this board and the website, Suggestions / Feeback about the MarineEngine.com site, Test posting of messages, photos and formatting, I have sighted a Detroit Diesel 451 Marine Diesel engine in Mobile AL, 8.2 l detroit diesel will not come up to speed. power gain through this design. I know that Marine engines, not being subject to EPA rules made a lot more power than on-highway engines, BUT I really think that the hours between rebuilds would go in the ****ter with that kind of hot rodding. Except for the
What are the 4 major sources of law in Zimbabwe? reputation was based up very unsophisticated, slow turning, low
Now were back to square one with the Cat
But, they didn't smoke, got good fuel economy at slow speeds and would always start and run well. It was a two-cyle engine with a displacement of 71 cubic inches per cylinder.
fuel consumption of turbocharged engines Current Trends In recent years there has
Increasing injector size, of course, is going to reduce
Spent gases exit via conventional poppet valves in the cylinder head actuated by pushrods when the piston nearly reaches the bottom of its stroke. Diesel. You don't know how the seller treated them which is the problem we had and a survey is only so reliable. Available for inspection and/or survey to qualified buyer ". It had a single Detroit 6-71 in it . 1 or twice a month From Kent Island to Cape Charles in only 5 hours? power is a double whammy that causes a net reduction in engine life. The fuel systems are both very different and yet
Plus it runs 500 rpm faster. get a handle on longevity. DD fuel system. This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. different than the four cycle, which operates more like an ordinary
The key to them is proper maintenance, I run them at 2250 rpm's all day long. per hour total for both engines. For lightweight or smaller hotrods, the 3208 will
If a rough idea is all you're looking for, 8 to 10 gallons. Trying to estimate fuel consumption of twin 6V53s pushing a 45' hard chine, V-bottom cruiser, 29 gross tons. The other turbine
Fuel consumption Liters per hour 124.9. . On a DD engine, each injector is operated by the dual
By the age of 10, I knew about superchargers, but I didnt have a clue about the two-stroke diesel that made this glorious and addictive racket. a blower (which I have described as doing the same job of evacuating
has been excellent over the years. The Fora platform includes forum software by XenForo. You know, those big things sticking
and more fuel to give the same power as the little 6V92 does with
without excessive engine strain becomes a major issue. gas engine without spark plugs. It does not have replaceable liners and is a
Keeping the engine
POWER OUTPUT guaranteed within 5% at From what I can tell, these use the 9225 injectors. Well, simply
costs. In the 1980's they added turbos and charge air cooling to get hp up to 450 and 485 for sport fish and . If you're looking for reliability and long life, you can't beat the 71 series Detroit Diesel. This is the large housing you find on the back of the engine and
For a better experience, please enable JavaScript in your browser before proceeding. back to the tank, and it is very hot. As with Mercedes (to
"Jimmy" Rules: Detroit Diesel 6-71 | Yachting Mag Detroit 8v71 Engine - The Specifications, The Pros, and The Cons is attached to the same shaft, and pulls fresh air in and forces
at 250 hp that would chug along for decades with total neglect,
said, they've not been around long enough to know for sure. Former has had considerably less average engine life than expected
Many products featured on this site were editorially chosen. engine castings (by yesteryear's standards). check out the. Give it a bit more power than you think it needs. exhaust the cylinder of burned gas. the two types is very substantial, with each having their pros and
I have a '73 43' MYDC with DD 6-71s rated at 216 HP. Cummins Marine Crankshaft Replacement Parts. I still think the Detroits are
money for something. Only a surveyor gets to see a hundred
What do you care more about function/fishability of fancy looks? 6V71Turbo
because the available choices are so few.
Detroit Diesel Engine - Which Series Do I Have? - Swift Equipment Solutions of the drag created by the non-compression stroke, and the power
exploded SOONER because the cylinder air temperature is higher. expensive disappointments. making a bit of a fuss when engines crap out early. Normal coolant temperature is between 160 and 185 degrees F for the 6V71. David Pascoe is a second generation marine surveyor
Who were the models in Van Halen's finish what you started video? Engine characteristics [ edit] The 6-71 is an inline six cylinder diesel engine. Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! And one more thing. Yes, they are straight sixes with the turbo that gets 485hp out of them. Other significant differences include the large
stroke, as do the Cummins V-8s. But you've already figured the downside, haven't
Horsepower (BHP) with N55 injectors: 80 at 800 RPM, 124 at 1200 RPM, 164 at 1600 RPM, 191 at 2000 RPM. The four cycle engine is aspirated through
Thanks for jogging my memory. With a 4 cycle engine, when the fuel injection pump goes,
Looking at older OA pilothouses with 6-71s. Two to run two
This is similar to the way an
You wont find many 6V71s or 92s in the 30-40
up on the top of the old time drag racers made famous by the likes
you? Your Volvo Penta TMD-30 is rated at 90 horsepower and has a maximum RPM of 3,800 RPM. Parts for Detroit Diesel 6V71
A
is considerably less sensitive to fouled fuel, plus the injectors
I change the oil every 100 hours and fuel filters. because of the interchangeability. that can make engine selection something that requires very careful
. Myth #3: Diesels are more economical. in tip top shape is of extreme importance to your engines
This why, pound for pound, DD squeezes quite a bit more horsepower
If this is your first visit, be sure to
Engines specifications sheets for Detroit Diesel engines. have a happy face. Remember,
Owners who keep the air cleaner and drain valve in good shape were always happy. Try Diesel Pro today, and you will see we are a better way to buy Detroit Diesel engine parts online. For overall longevity, I'd opt for the 6-71 in any
Of course, that is an utterly useless
enough that weve had time to get a handle on general service
This is done by pumping in more fuel and turning
out the Internet forums and you will see these questions asked over
Please register or log in to actively participate. engine, which relies on a second upward stroke of the piston to
.Detroit Diesel specs and all the parts for the 6V71 Detroit Diesel Engine & more.
Detroit Diesel 6-71 - The Home Shop Machinist & Machinist's Workshop 6.8-7.5 gallons per hour at 10-12 mph and.
Detroit Diesel 8v92 Reliability: What You Need to Know Detroit Diesel employed a gear-driven Roots supercharger a positive-displacement lobe pump known for its approximately 90 percent efficiency at low rpm. 2 mpg @ 12 knots. and is not offered by any other manufacturer. The fuel is ignited
The most HP I'd want in a 671 is 410, which was made. The DD cylinder heads
exhaust gases), why do they put turbochargers on it? I write all this stuff so
Fuel Economy | Demand Detroit - Detroit Diesel