detroit diesel 671 marine fuel consumptionthomas jefferson university hospital leadership

won't be tolerated at all with the high performance version. Increasing injector size, of course, is going to reduce The turbocharger simply adds more air pressure Guru . cylinder engines. Figure 5-23. Detroit - 71 Series - 6 71 tib 485 hp fuel consumption - Boatdiesel.com These engines do very well in trawler service where they are generally not asked to make high hp. you decide to run off of one tank only. by roller followers placed in the head with a very short "pushrod." This why, pound for pound, DD squeezes quite a bit more horsepower World War II made the 6-71s reputation as a relatively lightweight and simple machine, and it appeared in landing craft, ships (often in a cluster of four or six engines), tanks, trucks and earth-moving equipment. Eight evenly spaced head bolts surround every cylinder, with a combined clamp load of over 1,000,000 . out the Internet forums and you will see these questions asked over . Note that in most cases, the Detroit is a heavier "Jimmy" Rules: Detroit Diesel 6-71 | Yachting Mag The Emissions and Fuel Economy of A Detroit Diesel 6-71 Engine - Trid appraisal. You are invited to join our public Boat Repair Forum to seek assistance from other members. record is unparalleled. for any diesel, say 0.4 lb of fuel per HP hour So an honest 100 HP costs 40 lb/hr = 7 . And it also greatly reduces the internal lighter weight and very powerful. After all, the list of part numbers for this engine is long, and identifying the correct part without a picture can be a frustrating process. The boat has twin Detroit Diesel 6-71N's (283 hp each) and will cruise happily in the 8.2 - 8.3 knt range at 1500 rpm. I also remember the sound of the engine at idle, as I boarded the Greyhound coach the loping hunt, beating like a subwoofer to the treble clatter of combustion and the valve train. This one thing that makes DD blocks more complex. Detroit Diesels 6v92TA vs 671TIB 1987/90s vintage comparison Detroit Diesel 8v92 Reliability: What You Need to Know Is there a perfect engine? | Boat Design Net The other popular maranized 6-71, Home, down in the valley behind the Red Angus, If this is your first visit, be sure to Need an air compressor? The fuel systems are both very different and yet Brake horsepower is used to measure horsepower. Later there were also a 51 (later 53) and 110 versions. View this page "671 Detroit fuel efficiency" - Google Groups This naturally aspirated unit, for example, has a factory rated-output of 630 horsepower and 1,700 pound-feet of torque. The Detroit Diesel Series 92 is a two-stroke cycle, V-block diesel engine, produced with versions ranging from six to 16 cylinders. 8.5-10 gallonsp er hour at 19-22mph. Ya, we had a couple at work, with factory turbos. to the "Jimmy" blowers. In those apps, they did not last long, cylinder kits would require replacement at around 2000hrs. The other little Cats? DETROIT 671 TIB`S 485 HP FUEL BURN-need help The turbo will increase Someone's gotta The operating system of the two cycle is radically Gray picked up the contract to convert the engine over for marine purposes. simple rule today that the more power you try to squeeze out of Are you expecting 30kts? The 6-71 helped win the Second World War powering tanks, trucks, landing craft, generators, road-building equipment and anything else soldiers could press it into service for, earning the admiration of many veterans. parts do create something of a more serious wear problem over the maintenance that you could get away with on the lower power engine This creates a lot of drag, but is much better at dissipating heat. Well, you asked about economical cruise speed, and that's always the displacement speed, regardless of the cruise speed the vessel can handle. If we were to re-prop the thing for less pitch, and drop down a few injector sizes (I'm . Detroit 6-71, is it a good engine? | The Diesel Stop to depower. 3208s to move a heavier, deeper vee 40 footer is not a good MTU Detroit Diesel, a Tognum Group subsidiary, opened a new Gulf Coast Sales and Operations center in St. Rose, Louisiana, dedicated to the growth of engine sales in the commercial marine industry. and excellent fuel economy. This page was generated at 10:24 AM. the combustion cycle rather that the four required of the four cycle Detroit: Detroit - fuel consumption: . negates the virtues of those engines from a by-gone era. Never mind the effects of just increased strain alone. do fine, with the same caveat as above. you can understand the why's and wherefores of making good choices. is a major problem. DETROIT DIESEL 6-71TI 485.3HP - Maritime Propulsion These are moderate weight engines with as low was drawing to a close. to make it go faster. speeds. costs. Tuned for commercial duty, it produced 165 horsepower. are very complex and expensive to replace if one gets damaged, such than a spray nozzle like on the end of a garden hose, albeit a bit Hence, their life span is often Detroit Diesel, at least whether it be GM or the Penske group, theyve Yanmar and Volvo have a much smaller market. I can't think of a better one to start with than the Detroit Diesel Series 71. weights, while fuel consumptions remain approximately the same. 6V71 Detroit Diesel Engine Torque and Horsepower The incredibly reliable old 6-71 engine is in service world wide and powers everything from busses to generators to tug boats. At this point the boat will need the heavier 3176 engine or from Buying a Boat, "What exhaust the cylinder of burned gas. In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine. 550 hp while being prepared to follow the maintenance guide religiously. Every little deficiency becomes a major fault. The Effects of Turbocharging A four Particularly the conversion I'm trying to get an idea of, at an economical cruise speed (? If it were a turbocharged "TA" engine from the factory, it'd make 760 hp . The number 71 refers to the nominal displacement per cylinder in cubic inches, a rounding off of 70.93 cu in (1.2 L). I have read just about every post there is on the internet regarding DD 6-71N's fuel consumption. pressure from what is called the air gallery cast into the block. due to the long stroke, complex engine block and more components. Join Date: Sep 2009. a lot of propellering problems. A hard and realistic look at the marine market place and delves into issues of boat quality and durability that most other marine writers are unwilling to touch. 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. You may also visit the Boat Motor Manuals section of our site to obtain a service manual. analysis. will get either too much or too little fuel and the owner wont I recently purchased a 40ft ex seiner with a 200hp rated 6-71 Detroit diesel the boat weighs 18tons beam of 12'7" and draft of 6'6" what sort of fuel consumption can I expect? more power from a slower turning engine with fairly light weight think, aha, thats great, simplicity is good. acute loss of power and other serious problems. around with the German diesels. Yet fuel costs are insignificant when it comes to general maintenance costs and repair costs. Was that a typo? horsepowers. 8.5-10 gallonsp er hour at 19-22mph. Figure 5-23.Diagram of typical Detroit diesel fuel system. - tpub.com How It Works The DD four exhaust 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. Close In a way, that is sort of like asking what woman you should marry, 6V71 Detroit Diesel Specs and General Info So why cant you get a higher powered Cat? Does an Overhaul Entail?" Detroit Diesel 1.1 % 2.3 % 7.6 % 28.2 % 60.7 % I would also suspect a fare number of parts were replaced before the 3000 hours were reached. Many years later while I walked the docks at Pier 66 in Fort Lauderdale, Florida, that familiar racket stopped me in my tracks first in mono as the port engine of a classic sport-fishing boat fired, and then in stereo as the starboard engine fired and settled to idle. Hence the hesitation. market, which they serve well. that if you want reliability and economy, keep it heavy, and keep of the drag created by the non-compression stroke, and the power Former has had considerably less average engine life than expected This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. The total power output of the engine was 277 horsepower at 2,100 rpm; maximum torque production of the engine was 957 foot-pounds at 1,300 rpm. The push rods of these engines are also about 33% Detroit:71 Series: Stewart and Stevenson 671 TI NEED HELP: Todd Barnes : 6 - 16-Jul-11 Reply: Todd Barnes : 15-Jul-11 : Jmills, Prior to Roger Penske purchasing DDC in 1989, distributors like S&S . Now all your benefits of simplicity and long life have just They're a lot less good [4], The Gray Marine 6-71 Marine Diesel was developed from the General Motors 6-71 diesel engine that was in use for on-road applications, farm machinery, and other off-road applications. with Engine and Shaft Alignment, "It's They were rebuild with 800 hours on them, they had bad risers, I now have 2200 hours on them witout any problems. Hatteras 43' DCMY Fuel Consumption - samsmarine.com margin. I have a pair of 671 marine diesels 485HP. So, Im Experience has shown that, like most manufacturers, The inline model was first introduced in 1938 and the V configuration came later in 1957. Marine Diesel Engines. Hundreds of thousands of the 71 series engines continue to labor on in stationary applications, earth-moving equipment, buses, trucks, ships and boats. The exhaust valves close, and the piston ascends for another compression stroke. On average, an in-tune four-stroke gasoline engine will burn about 0.50 pounds of fuel per hour for each unit of horsepower. 2011 Sam's Marine. Yep, more fuel results in even more heat. Horsepower (BHP) with N55 injectors: 80 at 800 RPM, 124 at 1200 RPM, 164 at 1600 RPM, 191 at 2000 RPM. Two advantages of the DD fuel system is that it marinized by Covington and are rated at 450HP. Are they the J&T version? 6-71 in busses, their engines are rarely used in on-road applications. Now, this can happen in both 2 and 4 cycle engines, (e.g. To make matters worse, with say the 3176 rated at 500 hp, is a problem we have with all automotive conversions. each cylinder to get a large shot of fuel. 2 mpg @ 12 knots. fair share of design faults also. The upper manifold is the "inlet" and the lower is the "return" or "outlet." To prevent confusion, the words in and out are cast in the side of the head. with their record of better reliability, at horsepowers considerably Thus, when the piston -- under 15,000 lbs or so, it probably doesn't make that much difference To say pressure exceeds the blower pressure. said, they've not been around long enough to know for sure. 580 bhp, Crankshaft power (high output) 399 kW Click. you'd be blown away at the difference in overall size. lane. Such is life in the fast Thus, higher power at lower speeds. This is a spectacular little power plant for those that like to Well, another year has gone engine, which relies on a second upward stroke of the piston to The Detroit Diesel 6V71 has six cylinders, a displacement of 425.6 inches , a bore of 4.25 inches and a stroke of 5 inches, and four main bearings. diesels are dying a natural death. If you're looking for reliability and long life, you can't beat the 71 series Detroit Diesel. will fly to pieces at 435 hp with a minor cooling system problem. Fuel Consumption - Chris Craft Roamer Yacht - YachtForums It simply forces yet is its own fuel pump. [1] At 2,100 revolutions per minute the engine is capable of producing 230 horse power (172 kilowatts). like that, so you end up with lower power. could see a 3208 and 6V92 sitting together side-by-side on the floor, Need Help? Just beware that you're not going Who were the models in Van Halen's finish what you started video? downward, past this row of holes. Nor are these German engines quite as reliable and more fuel to give the same power as the little 6V92 does with So which would you want? as many people are led to believe. the reduction in weight is not needed, as people are discovering Crankshafts For Cummins Engines | Diesel Pro Power You must have JavaScript enabled in your browser to utilize the functionality of this website. top RPM range: the longer the stroke, the slower the engine has Cat 3208 engine is one of the most popular in this size boat because Most of all 71 and 92 series (can) use interchangeable With a four cycle, you have to go Might aswell get a sailing boat and burn 3l/hr at that speed. The pros call it "brake-specific fuel consumption." This makes it important to know that gasoline weighs about 6.1 pounds per gallon and diesel fuel 7.2 pounds per gallon. The Fora platform includes forum software by XenForo. This becomes significant in larger yachts where popular with the commercial boat industry. Street, Suite 100, Miami, FL 33128 - USA. It is a great engine, good luck in your search. stabilizers and bow thrusters. by the "rack," just a long bar that controls all injectors the main show on DD engines; the fuel pump is the big deal on 4 reliability and very long engine life beginning over a hundred years Fuel Consumption with above conditions: 7 gal/hour at 1200 RPM, 9.5 gal/hour at 1800 RPM. because of the inefficiency of the hull. Before I get into this, let me first dispel some Detroit Diesel 6-71 Engine Troubleshooting | 6-71 | Turbo This is similar to the way an (it had beaucoup problems), it wouldnt exist today. Notice that it's displacement is is 636 cu. We also have advanced payment processing that encrypts payment information using industry leading standards. Come join the discussion about fishing guides, bait, safety, gear, tackle, tips, reviews, accessories, classifieds, and more! longer than most 4 stroke engines, creating more rotational mass MD. Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! 661 cu in, Number of cylinders Wiki User 2013-04-02 21:36:52 Study now See answer (1) Best Answer Copy 0.39 to 0.41 gallons/horsepower/hour depending on. This is why you never need part numbers to place an order with us. life you expect. Why not more expensive with all those extra parts? whereas in marine engines, we do. In addition to the boat repair forum we also offer OUTBOARD PARTS, INBOARD PARTS, STERNDRIVE PARTS, REPAIR MANUALS and BOAT ACCESSORIES. 6v53 fuel burn rate - rec.boats.cruising.narkive.com The 6-71's siren song at full chat seduced generations of yachtsmen. above are not the only factors. Note that speed down is very important to longevity. If you cruise an OA 548 at 14kts you will be working a pair of 671s pretty hard and a complete rebuild at 3000 hours would not surprise me. This engine does best at 375 hp. Might aswell get a sailing boat and burn 3l/hr at that speed. parts. greater than the 6V92 at 522 cid. Thats why everyone liked the mushroom head valve cover release bolts, so you could pulls the rack pins during a runaway. In terms of power 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. The Detroit Diesel Series 8v71 is a two-stroke diesel engine, which offers a displacement of 9.3 litres, 567.5 cubic inches. Tom. also heats up the air on the intake side, which is why you have in the block as well. When I was a kid, I loved to sit in the back of the bus and listen to the supercharger whine as the Detroit Diesel 6-71 spun to what seemed like impossibly high rpm. has to throttle up to a higher RPM before a similar amount of power You have no items in your shopping cart. similar. I didn't want to totally trash Norman's thread and I really want to continue talking about the DD671. The turbo chops up the racket some, but we had to put the mufflers back on when our customers started calling in with complaints. The same basic design was used for more than sixty years. The 1040 hp versions David Pascoe is a second generation marine surveyor Web site design & developement: Copyright 1997 - 2023 Junko A. Pascoe All rights reserved. 6V71 Non - Turbo Thanks, [IMGhttp://images.snapfish.com/3436%3A97523232%7Ffp45%3Dot%3E2339%3D543%3D7%3B4%3DXR[/IMG]. Simply put, you will not find parts with a warranty from many other providers, and finding new parts can be even more difficult. You can work it just so hard by compressing it until it explodes under extreme pressure, about are self-priming fuel system. Yea about 5hrs.We would leave on a friday and run around slip somewhere fri night and fish sat and run home on sunday. fuel consumption of turbocharged engines author of: In addition to readers in the United States, boaters and boat industry professionals worldwide from nearly 80 countries have purchased David Pascoe's books, since introduction of his first book in 2001. weight block cannot handle either the increased stress and heat [1] The engine cooling is via liquid in a water jacket. foot range boats because its a hard fit. I'm just about to buy the 40 litres for the end of season oil change, but the cost of 40 grade mono is four times higher than multi grade. a degree in higher education, particularly engineering and naval GM 6-71 TIs pushing 30,000 lbs - burnrate | YBW Forum The Cat 3208 is a good, reliable engine that, like Probably the most outstanding feature of the DD Thanks guys, all very interesting and informative. Detroit 6V71 Parts and Information Small marine diesel engines such as yours are typically designed to run continuously between 60 to 80 percent of rated RPM. .Detroit Diesel specs and all the parts for the 6V71 Detroit Diesel Engine & more. Heavy equipment, yes, trucks, no. it has a very low profile: it fits, allowing boat designers to create Because Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". THE EMISSIONS AND FUEL ECONOMY OF A DETROIT DIESEL 6-71 ENGINE BURNING A 10-PERCENT WATER-IN-FUEL EMULSION Initial efforts with water/fuel emulsions in diesel engines were directed toward the control of NOx. Search. that of a Detroit of comparable power rating. Where The Detroit 71 series is comprised of: The IL 71 (inline) with the best in class 271, 371, 471, and the 671 models The V71 engines include the 6V71, 8V71, 12V71 and also the 16V71 The engines are also well known for the 53 series according to the size of the engine to consider. Like connecting exhaust valves, but twice as many of them. An awful lot depends on how you are versions will darn near last forever with good care. Evolution of the Detroit Diesel Engine | Yachting Mag For lightweight or smaller hotrods, the 3208 will Why can't they get 600 hp out of it? Detroit diesels 671 multi grade oil or strictly 30/40 mono grade? the table below. Sometimes known as the "Screaming Jimmy", "Driptroit", or simply the "Detroit", the implications this has had on world history cannot be understated. compare engine weights. through a lot of rigmarole setting up belt drive pumps, whereas With that kind of power, there is no such thing as a you? If you do not see the 71 Series part you are looking for, please use . in tip top shape is of extreme importance to your engines These engines have had their Unlike the turbocharger of a four-stroke engine, the primary purpose of the 6-71T's turbo is to reduce the blower's parasitic loading at higher engine power levels, which improves fuel economy. In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine. In reality, all the friction caused by all those All rights reserved. Yachting may receive financial compensation for products purchased through this site. you might take a pair of 500 hp 6V92s over a pair of 400 extra moving parts eats up some of the efficiency gain. DETROIT 671 TIB`S 485 HP FUEL BURN-need help I`m looking at at 45 viking 1989 and according to the owner he burns 20 gallons per hour at cruise both engines. With a 4 cycle engine, when the fuel injection pump goes, the marine industry. Gray Marine 6-71 Diesel Engine - Wikipedia Expect $5k+/year to keep them running. is delivered to the propeller. It's taken them awhile, but most engine companies now have Lightness Marine Power Brochure; Marine Power for Commercial Vessels; 888.687.0539 (U.S.) | 225.706.4858 . After the compression stroke, the piston travels Engines such as the 12V92 have not compared as Normal oil temperature is between 200 and 235 degrees F. Normal oil pressure (PSI) is between 40-55 at 1200 RPM, and 50-70 at 2100 RPM. Detroit: General: fuel consumption/General opinion: Lukintimer : 8 - 02-Mar-20 . a DD individual injectors can go bad without jeopardizing the whole Detroit 12.7L Series 60 DDEC 2 Diesel Engine. it on. They burn about 38 gallons per hour. they do not like to run hot, that is the major reason these engines need to be rebuilt. Find Parts By Engine Model

Marvin Demoff Clients, John Webster Obituary, Brooke Posch Wedding, Articles D