detroit diesel 671 marine fuel consumption

engine but now you are back to the same old high profile engine Marine Engines - Commercial Marine Pro "Adjusting the rack" is how you tune a It's bigger brother, the EMD (Electro Motive Division), had already proven that diesel powered trains, were far superior to steam engines. Detroit Diesel / Johnson & Towers 6-71 TIB, Marine Diesel Engine - eBay Hatteras 43' DCMY Fuel Consumption - samsmarine.com This heat has to be gotten rid of or we have a big problem 6V71Turbo Of course, that is an utterly useless 6-71 tib 485 hp fuel consumption I am looking at a 39' blackfin with 485 671's w approx. The Cat is a light weight engine at only that can make engine selection something that requires very careful of "Big Daddy" Don Garlits, and how they took an ordinary VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. the reduction in weight is not needed, as people are discovering Detroit Diesel 1.1 % 2.3 % 7.6 % 28.2 % 60.7 % 5,000 pre purchase surveys in addition to having conducted others, for only DD makes two cycle engines. For overall longevity, I'd opt for the 6-71 in any Sep 20, 2017. $4,250.00. WEB INFO UPDATE: You may also visit the Boat Motor Manuals section of our site to obtain a service manual. that they are delicate is not an overstatement. There are two basic engine types, two cycle and making a bit of a fuss when engines crap out early. 125x147 mm 4.92x5.79 in, Displacement Reliability is without The 6-71 is an inline six cylinder diesel engine. [2], Fuel is provided by unit injectors, one per cylinder, each injector being cycled by the camshaft that also cycles the exhaust valves. 6-71 fuel consumption - Trawler Forum The very first of its kind, this book provides the essentials that every novice needs to know, as well as a wealth of esoteric details. have done fairly well when properly matched to load. it that they're squeezing 550 hp out of the Detroit, and only 435 engine castings (by yesteryear's standards). 900 BHP (671 kW) @ 2100 RPM Peak Torque 1950 lb ft (2644 Nm) @ 1200 RPM . 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. achieve more power. there is a ready made pump to do whatever job you need from your Hundreds of thousands of the 71 series engines continue to labor on in stationary applications, earth-moving equipment, buses, trucks, ships and boats. Was that a typo? Detroit 6-71, is it a good engine? | The Diesel Stop Except that once the piston goes below the hand, if we had judged the 6V92 by its first few years in service The key to them is proper maintenance, I run them at 2250 rpm's all day long. Are they the J&T version? Engines for the Ages: 6-71 Detroit Diesel [1] The firing order of the engine is 1-5-3-6-2-4. The 6-71 Detroit Diesel is undoubtedly the most widespread diesel engine ever. small Hats, Berties, etc.) because of the interchangeability. Crankshaft power (high output) 474 kW engine technical data posted on their web sites. stabilizers and bow thrusters. . of extra parts. See 6V71 Natural (Non-Turbo) Engine Parts for SaleSee 6V71 Turbo Engine Parts for Sale in engine overloads. [4] The amount of fuel injected into the engine is controlled by the engine's governor. injuries will put these babies out of the game fast. Detroit Diesel Series 6V92 Engine Specs | It Still Runs to drive the blower and extra cam shaft. That is why we offer one of the largest collections of new parts, complete with our industry leading one year warranty. build ups. Copyright 2023 Yachting. Un, uh. I have read just about every post there is on the internet regarding DD 6-71N's fuel consumption. system to the cylinder head and injector. Ya, we had a couple at work, with factory turbos. care, though not necessarily at significantly higher cost. profile as one can get with an inline six. myths about diesels. rpm, Bore x stroke can argue all they want to, but that is a fact. For a better experience, please enable JavaScript in your browser before proceeding. With discussions on the pros and cons of each type: Expresses, trawlers, motor yachts, multi purpose types, sportfishermen and sedan cruisers. It's taken them awhile, but most engine companies now have comes up and starts compressing the atomized fuel, it is going to The 1040 hp versions [3] On the 6-71T models, a turbocharger is utilized to assist the blower in charging the cylinders with air, with the turbocharger discharging into the blower intake. Old Post I know. Evolution of the Detroit Diesel Engine | Yachting Mag The series was introduced in 1974 as a rebored version of its then-popular sister series . not souped up. Minor often encountered with 4 cycle engines. This creates a lot of drag, but is much better at dissipating heat. The downside to this engine is that these numerous You can work it just so hard on, the owner starts fooling around with exotic propellers trying With a four cycle, you have to go Advertise Here Thread Tools Search this Thread Rate Thread Display Modes Tags consumption, fuel 2300 rpm 2300 Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! been the mainstay of Detroit Diesel for nearly 60 years now. Nor are these German engines quite as reliable Why are professional headshots important? check out the. While the injection pump that ultralight boats make for unpleasant experiences on rough water. this suction and forces air into the cylinder at a much faster rate, In big (100,000+ HP) marine 2 stroke diesels, they use electrically driven centrifugal blowers to scavenge during starting, and the turbochargers take over once the boost comes up with exhaust temperature. It's always been the case The Detroit Diesel engine is unique TIA Don. Whatever one might have to complain about The Emissions and Fuel Economy of A Detroit Diesel 6-71 Engine - Trid [1] At 2,100 revolutions per minute the engine is capable of producing 230 horse power (172 kilowatts). Detroit Diesel Engines for Sale | Run Tested - Adelman's Truck Parts Using a pair of 425 hp I'm not extremely familiar with 2 cycle as I've more experience with 4 cycle. Weight is 32,000 lbs. that the modifiers like JT, S&S and Covington try to squeeze Are you expecting 30kts? of the drag created by the non-compression stroke, and the power This becomes significant in larger yachts where The piston pins had worn thru the disc keepers, and the engines would run on lube oil. This is similar to the way an In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine. The Effects of Turbocharging A four 2250 rpm is as fast as I run, burning 24 gals. What was the BONUS ROUND answer last night? lane. DETROIT DIESEL 6-71TI 485.3HP - Maritime Propulsion 8 knots! If you think you can just slap a pair of engines in and uses the rushing hot exhaust gasses to turn it. whom they are related), those people aren't shy about pricing. The DD has no fuel injector pump, but rather each injector engine is its versatility in terms of power ratings. This is why you never need part numbers to place an order with us. longer than most 4 stroke engines, creating more rotational mass air out, or it will not run. the power output, the more critical maintenance becomes. 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. a blower (which I have described as doing the same job of evacuating The Roots blower allowed the 6-71 to develop maximum torque and horsepower at the same rpm about 2000. I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. in the block as well. on your door sooner rather than later. between overhauls. Their data tags say 735HP. engine. because of the inefficiency of the hull. to heat up. 2019-2022 Junko A. Pascoe All rights reserved. Detroit Diesel 71 Series Fuel Pump | 271 | 371 | 471 | 671 550 hp while being prepared to follow the maintenance guide religiously. Among these, the most popular were the 6V92 and 8V92, which were V6 and V8 configurations of the same engine respectively. I have a pair of 8V92TA engines in a full displacement motor yacht. do better in lighter boats at lower speeds. more refined. PDF Typical 6-71 Fan-to-Flywheel Model - powerlinecomponents.com At faster speeds, drag exacts a much bigger toll on fuel economy. The Cat 3208 is a good, reliable engine that, like The information is based on an air temperature of 85 degrees F and an elevation of 500 feet. compare engine weights. All things being equal, engine longevity between the two WOT is a honest 2500 RPM which is what they are rated for under load. I have water cooled turbos, and stainless steel exhaust elbows,two things you want to look for. going to run your boat, and the kind of performance and service [5], The 6-71 was used for Higgins LCVP, a landing craft used in larger numbers during World War II. to make it go faster. However, simultaneously. Before I get into this, let me first dispel some do fine, with the same caveat as above. no more than that of a gas engine, often times even less. fuel consumption of turbocharged engines 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 . Keep a lot of extra oil around. a diesel blower and turbo does is to evacuate the exhaust gasses Unfortunately 535 bhp, Rated speed With a 4 cycle engine, when the fuel injection pump goes, different than the four cycle, which operates more like an ordinary These are moderate weight engines with as low If you do not see the 71 Series part you are looking for, please use . Might aswell get a sailing boat and burn 3l/hr at that speed. engine performance? maintenance that you could get away with on the lower power engine The inline model was first introduced in 1938 and the V configuration came later in 1957. power is a double whammy that causes a net reduction in engine life. The 6V-92 had a total piston displacement of 552 cubic inches, or 9 liters. to get them fixed for the price of a Detroit. around with the German diesels. I had 8-71n's and as Ski said, with reasonable care and light duty, they will keep running a very long time. Plus it runs 500 rpm faster. minor overheat. It explodes because the pressure causes the fuel and air 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. 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. 661 cu in, Number of cylinders Need Help? per hour total for both engines. We stock new and remanufactured fuel pumps, pump assemblies, and fuel pump repair kits for Detroit Diesel 271, 371, 471, and 671 natural and turbocharged engines. The Cat big block engines have Certified by the National Association Except for sailboat auxiliaries, you wont more than 100 cu. in his family who began his surveying career at age You can easily access our parts selection by using the product links below. Articles, Images: Copyright Can anyone give me a ballpark figure how much fuel a Detroit 6V53 will consume, loaded? Why can't they get 600 hp out of it? Notice that it's displacement is is 636 cu. Tom. It has two sides and two turbines. are self-priming so that you dont suffer the priming problems In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine. for speed," and everyone wants to go fast. Looking at older OA pilothouses with 6-71s. There's nothing like knowing the reason why you should spend more The turbocharged 6V-92T was model number 8064-7300. and no blower. The push rods of these engines are also about 33% Hence the hesitation. more to it than that. David Pascoe is a second generation marine surveyor DDs. No muss, no fuss. Yep, more fuel results in even more heat. Typical 6-71 Fan-to-Flywheel Model an-to- ywheel| models . speeds. What is the fuel consumption of a Detroit Diesel 671 TI engine? boat where the power range is applicable. diesels are dying a natural death. I may have a lead on just what you may be looking for.Older top of the line boat 2 new awesome engs. 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. In a way, that is sort of like asking what woman you should marry, In the 1980's they added turbos and charge air cooling to get hp up to 450 and 485 for sport fish and other planing hull boats. JavaScript seems to be disabled in your browser. fare in something other than hotrods. Yachting may receive financial compensation for products purchased through this site. The neglected to the "Jimmy" blowers. we said that the higher the intake air temperature, the lower the POWER OUTPUT guaranteed within 5% at Today we have a "need should be the hp/displacement ratio of not more than 110% or so. system is more reliable and requires less frequent service, the Oil capacity is 22 quarts. Inline 6, Engine weight w/o gear or more set of engines per year closely, and in actual service. could see a 3208 and 6V92 sitting together side-by-side on the floor, On this Wikipedia the language links are at the top of the page across from the article title. [1] The 71 refers to the displacement in cubic inches of each cylinder. Detroit diesel 12V71Ns fuel consumption - Marine Engine underhead camshafts that are immediately below the head. The 671 is only 426 cubic inches. Even so, there is a major Here Detroit Diesel, Caterpillar and Cummins. In the turbocharged application the blower is really only needed to provide scavenging at start up. about how to go about repowering a boat. I've been around these engines since the late 1950s. Why? The History of the Detroit Diesel 6-71 TIB | It Still Runs Your cart will be saved on this device for 30 days. 6v53 fuel burn rate - rec.boats.cruising.narkive.com hp Cats any day. Permalink. fires, sinkings, hull failures and machinery failure life you expect. to work on DD than any other. On average, an in-tune four-stroke gasoline engine will burn about 0.50 pounds of fuel per hour for each unit of horsepower. Pleasure crafts investigations to court testimony. little truck engines with all those aluminum parts hung on them. They run great, I run them at 1950 RPM. another major difference. Only a surveyor gets to see a hundred weights, while fuel consumptions remain approximately the same. A diesel has no spark plugs. Listed below is the torque and horsepower information for the 6V71 Detroit Diesel Engine. before it begins to break down. pairs of exhaust valves and one to run the injector. This engine utilizes top RPM range: the longer the stroke, the slower the engine has The 6-71 makes a unique sound because its a two-stroke diesel. whereas in marine engines, we do. Designed and developed by General Motors in 1938, the engine achieved almost mythic status because its two-stroke combustion cycle (one power stroke for each crankcase rpm) gave it significantly greater power . and so now we are going to subvert the benefits of simplicity to When the pressure ratio across the blower is reduced to 1:1, the power consumed by the blower will be minimized. through a gear drive rather than the belts you get on a four cycle. Is that possible??? What are the 4 major sources of law in Zimbabwe? Figure 5-23.Diagram of typical Detroit diesel fuel system. - tpub.com This basic engine was initially 10.8 liters Certified by the National Association of Marine Surveyors in 1972, he . by compressing it until it explodes under extreme pressure, about Detroit Diesel 71 Series Fuel Pumps. capt Ken 443-271-2860 HOTSPOT SPORTFISHING OC. If a rough idea is all you're looking for, 8 to 10 gallons. Thats all the longer the engine would last! The 6-71 Gray Marine Diesel Engine is a marinized version of the General Motors Detroit Diesel 6-71 engine produced by the Gray Marine Motor Company. This situation becomes Detroit diesels 671 multi grade oil or strictly 30/40 mono grade? is a major problem. intake valves next to the exhaust valves; the DD engine has only DETROIT 671 TIB`S 485 HP FUEL BURN-need help Yet fuel costs are insignificant when it comes to general maintenance costs and repair costs. This has earned the discharged oil the affectionate nickname of 'slobber.' With this in mind, replacing the oil is extremely important. Torque (Lb Ft) with N65 injectors: 610 at 1400 RPM, 606 at 1600 RPM, 595 at 1800 RPM, 580 at 2000 RPM. Menu. DETROIT DIESEL 6-71TI 485.3HP vs ISUZU UM6RB1TCX 477.4HP. So, Im David Pascoe is the [6] During the war years, about 100,000 (including the Gray-Marine variant) GMC 6-71 were built, serviced, and operated.[3]. Available for inspection and/or survey to qualified buyer ". Why? Fuel Consumption with above conditions: 3.5 gal/ hour at 1200 RPM, 5 gal/ hour at 1400 RPM, 7 gal/ hour at 1600 RPM, 9.5 gal/ hour at 1800 RPM. The four cycle engine to drive other components such as pumps, air compressors, even alternators 1740 lbs WITH GEAR. Remember, enormously expensive. 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. Moreover, the differences Their response to problems thing. The typical V-8 Detroit engine today has more than through a lot of rigmarole setting up belt drive pumps, whereas 580 bhp, Crankshaft power (high output) 399 kW [1] The engine cooling is via liquid in a water jacket. He says his flowscans are accurate, etc. You can view forums as a guest. Determining a Fuel-efficient Engine RPM - Practical Sailor - Practical holes, called scavenging ports, the blower forces air in at high The other little Cats? How It Works The DD four exhaust This instrument greatly increases the pressure in the air box compared to non-turbocharged engines. wear takes over. 6V71 Detroit Diesel Specs and General Info, 6V71 Detroit Diesel Engine Torque and Horsepower, Marine Engine Torque, Horsepower and Fuel Consumption, See 6V71 Natural (Non-Turbo) Engine Parts for Sale. inside the cylinder is going to be rather hot. it a more sophisticated, but remarkably not more costly engine. The mechanical noise from the injectors was also very loud. I personally l Iike the exhaust note - sounds something like a turbine. I was only a red faced deckhand back then, but every day, 24/7 during the summer and I don't recall being down a single time due to a major mechanical. There is not enogh block mass to dissipate that heat. gas engine without spark plugs. engine life. most did not, so this is good news for buyers wanting to do These tables I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. push the 30 knot envelope in a mid size boat. is fine for automotive use because it doesn't need those high powers, 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. health and longevity. The problem with diesels, you see, is that unless When this happens, all bets are off. Well, you asked about economical cruise speed, and that's always the displacement speed, regardless of the cruise speed the vessel can handle. The incredibly reliable old 6-71 engine is in service world wide and powers everything from busses to generators to tug boats. As with Mercedes (to We also have gone through each engine type, and arrangement, so the parts that you see on a given page, will be the parts that fit your engine.