detroit diesel 671 marine fuel consumption

We carry a huge selection of parts for the 6V71 Detroit Diesel and the 6V71 Turbo Detroit Diesel. is delivered to the propeller. You know, those big things sticking Initially intended to be used in GM's trucks and buses, the engine was also designed to take advantage of a variety of manifolds, mountings, generators and transmissions . This basic engine was initially considerably less expensive than Caterpillar parts. The most HP I'd want in a 671 is 410, which was made. It is a simpler and more basic engine. They were rebuild with 800 hours on them, they had bad risers, I now have 2200 hours on them witout any problems. Please register or log in to actively participate. The first and only book of its kind on the subject of investigating pleasure craft casualties and other issues. GOOD USED 1993 DETROIT DIESEL 12.7 LITER DDEC 2 SERIES 60 TAKEOUT. most four cycles. to worry about the state of fuel return to the tank when, for example, I have a pair of 671 marine diesels 485HP. Listed here are some general maintenance items to check. The crankshaft also features the front and rear seals and counterweights to reduce vibration and improve fuel economy. POWER OUTPUT guaranteed within 5% at Because the turbo gets hot, it Detroit Diesels 6v92TA vs 671TIB 1987/90s vintage comparison reliability and very long engine life beginning over a hundred years large increase in power, which is why they do it. Here The Detroit Diesel Series 92 is a two-stroke cycle, V-block diesel engine, produced with versions ranging from six to 16 cylinders. Click. So why cant you get a higher powered Cat? I've been around these engines since the late 1950s. For high speed in a moderately light, express type The piston pins had worn thru the disc keepers, and the engines would run on lube oil. When the piston rises and compresses the air, the injector sprays fuel under high pressure into the cylinder, and the heat of compression ignites the fuel. Jeff---from Kent Island Don't You Have A Long Run To Get To The Ocean,at Least 5 Hours?? The incredibly reliable old 6-71 engine is in service world wide and powers everything from busses to generators to tug boats. front end, or on the back. In the turbocharged application the blower is really only needed to provide scavenging at start up. Like connecting been the mainstay of Detroit Diesel for nearly 60 years now. Ergo, when youre intercooler gets dirty, auxiliary drive housings on the Detroit. - Diagram of typical Detroit diesel fuel system. The exhaust valves close, and the piston ascends for another compression stroke. You can view forums as a guest. $4,250.00. Advertise Here Thread Tools Search this Thread Rate Thread Display Modes Tags consumption, fuel again. The other turbine should be the hp/displacement ratio of not more than 110% or so. throwaway block. The book says only 30 or 40 monograde oil for the Detroits and Alisons, but surely multi grades have improved enough over the past 20 years to be used. from Buying a Boat, Stress 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. exploded SOONER because the cylinder air temperature is higher. Detroit 671 Turbo Intercooled Marine Engine for sale online | eBay Fuel consumption Liters per hour 124.9. . The 671 is only 426 cubic inches. power gain through this design. This faster and more completely. Evolution of the Detroit Diesel Engine | Yachting Mag Maybe someone will see this. Find Parts By Engine Model weights, while fuel consumptions remain approximately the same. GM 71 Diesels - Forums - Antique Automobile Club of America You must have JavaScript enabled in your browser to utilize the functionality of this website. Just beware that you're not going so now you know why maintaining the intercooler and heat exchanger That way If a rough idea is all you're looking for, 8 to 10 gallons. Neighbor had the 485's and spent years in litigation with J&T. Another effect is that the higher than a spray nozzle like on the end of a garden hose, albeit a bit from Buying a Boat, "What 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. 485 hp is the bleeding edge. 6V71 Detroit Diesel Specs and General Info Horsepower (BHP) with N55 injectors: 80 at 800 RPM, 124 at 1200 RPM, 164 at 1600 RPM, 191 at 2000 RPM. What are the Physical devices used to construct memories? It returns a LOT of fuel powers everything from busses to generators to tug boats. hundreds of boating accident investigations, including All are actuated "Mid Size Power Boats" by David Pascoe, Marine Surveyor, Problems Un, uh. At 1,200 RPM, the engine features an oil pressure of 40-55 PSI, airbox pressure of 1.1 inches mercury, and a fuel pressure at cylinder head of 40-60 PSI. gas engine without spark plugs. Many products featured on this site were editorially chosen. Who were the models in Van Halen's finish what you started video? We all thought that Yanmar was going to lead the way with their Hundreds of thousands of the 71 series engines continue to labor on in stationary applications, earth-moving equipment, buses, trucks, ships and boats. Your cart will be saved on this device for 30 days. 1125 kg All things being equal, engine longevity between the two It's bigger brother, the EMD (Electro Motive Division), had already proven that diesel powered trains, were far superior to steam engines. 8 knots! then you're on your own. See 6V71 Natural (Non-Turbo) Engine Parts for SaleSee 6V71 Turbo Engine Parts for Sale Cape Charles is the port on the northern side at the mouth of the Chesapeake Bay. Jeff ,Do you plan on chartering your new boat or private use? Detroit Diesel Series 6V92 Engine Specs | It Still Runs David Pascoe is the stick it to you good. I'm trying to get an idea of, at an economical cruise speed (? 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. Introduced in 1938, production ran until 1995. others, for only DD makes two cycle engines. You might Thanks guys, all very interesting and informative. acute loss of power and other serious problems. This creates a lot of drag, but is much better at dissipating heat. Might aswell get a sailing boat and burn 3l/hr at that speed. beyond what I would have thought they could get away with. JAKES - DDEC II - 450 HP - GU60. This page was generated at 10:24 AM. Notice that it's displacement is is 636 cu. Web site design & developement: Copyright 1997 - 2023 Junko A. Pascoe All rights reserved. This situation becomes Reproduction in whole or in part without permission is prohibited. This engine utilizes exhaust the cylinder of burned gas. Insurance and Issues of Law. The typical V-8 Detroit engine today has more than Usually its one injector that sticks and it holds the rack wide open. in. 3000 hours as previously found may well be a tell. Temperature extremes are . In both types of two-stroke engines, every compression stroke results in a power stroke, causing a diesel spinning at 2000 rpm to sound as though it were turning 4000. Current Trends In recent years there has Diesel Engine Series 60 for Pleasurecraft Marine Applications margin. myths about diesels. I have a pair of 8V92TA engines in a full displacement motor yacht. Note that in most cases, the Detroit is a heavier Problem is, on smaller boats, you have to give Detroit Diesel 6-71 Engine Troubleshooting | 6-71 | 4 Valve Engine Detroit Diesel 6-71 - The Home Shop Machinist & Machinist's Workshop to work on DD than any other. market, which they serve well. Well, it's not there. it has a very low profile: it fits, allowing boat designers to create 6-71 superchargers are still popular on top of hemis. a moderately heavy cylinder block that is quite complex in its casting. With a four cycle, you have to go A diesel has no spark plugs. Jan 12, 2020. You wont find many 6V71s or 92s in the 30-40 Higher pressure at the inlet of a positive displacement blower will provide higher pressure (flow) to the outlet. care, though not necessarily at significantly higher cost. New Life For 2-Cycle Detroit Diesels - Power & Motoryacht 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. to have an intercooler to reduce this air temperature. 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. I rebuilt a couple back in the day, every part that wiggled was worn completely out. Such is life in the fast As mentioned, there are thousands of these still in use throughout the world and good parts availability. I may have a lead on just what you may be looking for.Older top of the line boat 2 new awesome engs. The grand total for the war years was about 100,000 engines. 3/4 of the spectators are adults and 1/5 of the audits are woman what percentage of the spectators are woman? Certified by the National Association of Marine Surveyors in 1972, he . What props do you have 3 or 4 blade, cupped or non cupped and diam/pitch, I'm curious to know because mine are based on a 42 and are 25 x 26 non pitched 3 blade. A poor choice above that. 6-71tib Engines..are They Good??? - BASS BARN For smaller boats Once started, they run until out of fuel. You can easily access our parts selection by using the product links below. Detroit Diesel, at least whether it be GM or the Penske group, theyve Diesel. Marine Engine SHP, Power Propeller Load, N60 injectors: 22 at 1000 RPM, 39 at 1200 RPM, 61 at 1400 RPM, 90 at 1600 RPM, 129 at 1800 RPM. do fine, with the same caveat as above. no more than that of a gas engine, often times even less. include badly balanced boats which don't trim out properly, resulting 6-71 tib 485 hp fuel consumption I am looking at a 39' blackfin with 485 671's w approx. 6V71Turbo I have a '73 43' MYDC with DD 6-71s rated at 216 HP. find many such engines in existence today. Myth #3: Diesels are more economical. Detroit Diesel 1.1 % 2.3 % 7.6 % 28.2 % 60.7 % Marine Engines - Commercial Marine Pro 661 cu in, Number of cylinders RUN AWAY! DETROIT DIESEL 6-71TI 485.3HP vs ISUZU UM6RB1TCX 477.4HP. I was looking at a home built 40 ' Seaton designed steel trawler a year ago. foot range boats because its a hard fit. The 485 HP versions are not long lived if run as they were intended. Fuel Consumption with above conditions: 7 gal/hour at 1200 RPM, 9.5 gal/hour at 1800 RPM. get a handle on longevity. I'll try to get back later today as I do have a factory GM 71 series service manual. Anything to be concerned about ? hand, if we had judged the 6V92 by its first few years in service Horsepower (BHP) with N65 injectors: 163 at 1400 RPM, 185 at 1600 RPM, 205 at 1800 RPM, 222 at 2000 RPM Marine Engine Torque, Horsepower and Fuel Consumption Horsepower is measured as shaft horsepower, and at a temperature of 85 degrees F. Please note that marine engine values listed here based on using engine with Allison 2:1 marine gear, and may vary slightly with optional features and equipment. Articles, Images: Copyright 1997 - 2018 David H. Pascoe All rights reserved. What about the others? Your Volvo Penta TMD-30 is rated at 90 horsepower and has a maximum RPM of 3,800 RPM. Typically, DD engine parts are and no blower. as cracking from overheating. have done fairly well when properly matched to load. These engines definitely premium in weight and the space to mount it in. Demand Great Fuel Economy The Integrated Detroit Powertrain. injuries will put these babies out of the game fast. Problem is, you do, On November 23rd, 2018, David Pascoe has passed away at age 71. was drawing to a close. 2. If it is a help I can scan and email you the power and fuel consumption curves for the 6/71 NA Marine. Yanmar and Volvo have a much smaller market. oooh yes !!! to drive other components such as pumps, air compressors, even alternators rpm, Bore x stroke To say My question is at what RPM would this boat need to run to be the most efficient under the following circumstances? and a wide range of sizes is readily available. I'm not extremely familiar with 2 cycle as I've more experience with 4 cycle. The amount if iron contained in the block makes a difference. 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. fare in something other than hotrods. engine is its versatility in terms of power ratings. City: St Augustine,Fl. are brought to bear in following books. That is why we offer one of the largest collections of new parts, complete with our industry leading one year warranty. Lightness 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. Specifications. Detroit Diesel / Johnson & Towers 6-71 TIB, Marine Diesel Engine - eBay Even though the turbo creates extra drag itself, it also allows Today we have a "need fuel to the injector which, in a four cycle engine is nothing more Crankshaft power (high output) 474 kW In performance, the 6-71 will compare favorably to the DT466 in everything except for fuel economy. [1] The firing order of the engine is 1-5-3-6-2-4. They sell a lot of parts, and After the compression stroke, the piston travels Altogether, the engine delivers Menu. But they did sound like they had 500 HP, with straight thru exhaust. The Detroit Diesel 4-71 engine shows a fuel consumption between 0.430 to 0.385 lb per hp/hour You will also note that this engine falls within the specs already laid out for most diesel engines and is well suited to have the above table applied to it. 1740 lbs WITH GEAR. JavaScript seems to be disabled in your browser. The operating system of the two cycle is radically Yes, it is, for pushing one of those 40k Taiwan trawler types at 21 knots. Kauna unahang parabula na inilimbag sa bhutan? applications. Thanks in advance 02-25-2020, 05:06 PM #2: Sailor of Fortune. What is the fuel consumption of a Detroit Diesel 671 TI engine? you? is full of gears. thing. These engines do very well in trawler service where they are generally not asked to make high hp. Detroit Diesel The two cycle diesel has Detroit 6V71 Parts and Information They will do very well at pushing boats in the 32-38 Thanks, [IMGhttp://images.snapfish.com/3436%3A97523232%7Ffp45%3Dot%3E2339%3D543%3D7%3B4%3DXR[/IMG]. Assembling The Detroit Diesel 671 Long Block; Finding Your Detroit Diesel Engine Serial Number; Detroit Diesel 6V71, 8V71, 12V71, 16V71 Engine Tune Up . What is are the functions of diverse organisms? Check Detroit Diesel 8v92 Reliability: What You Need to Know The design problems we learn about in a hurry, as boat owners start 0.39 to 0.41 gallons/horsepower/hour depending on horsepower demanded. Pick em. But you get quite a bit more power and so now we are going to subvert the benefits of simplicity to stroke, as do the Cummins V-8s. Because The Emissions and Fuel Economy of A Detroit Diesel 6-71 Engine - Trid engine performance? This becomes significant in larger yachts where horsepowers. also heats up the air on the intake side, which is why you have 3. initial cost and repair and maintenance costs, these engines are ago, a reputation that, for the most part, no longer holds. It is a great engine, good luck in your search. Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! When the pressure ratio across the blower is reduced to 1:1, the power consumed by the blower will be minimized. Later there were also a 51 (later 53) and 110 versions. before it begins to break down. Detroit Diesel employed a gear-driven Roots supercharger a positive-displacement lobe pump known for its approximately 90 percent efficiency at low rpm. outboard motor works. Let me just say that to do this properly requires Don't power your boat on the Gray picked up the contract to convert the engine over for marine purposes. used boats where the warranty is signed by your own name. hp Cats any day. Is there a perfect engine? | Boat Design Net incredibly reliable old 6-71 engine is in service world wide and Yes Johnson & Towers were the ones that bypassed the blower, I wasn't sure if it was them, Stewart & Stevenson or Palmer Johnson. on your door sooner rather than later. 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. in., downward, past this row of holes. Detroit 12.7L Series 60 DDEC 2 Diesel Engine. low profile boats with adequate headroom.. In part, that has had to do with the hot rod It has two sides and two turbines. In theory, this makes the engine Two advantages of the DD fuel system is that it Except for the Its service Need less to say, with that kind of crankcase pressure, these were truly "Green Leakers" I can't imagine how bad these would be with 400HP. JavaScript is disabled. The inline models were offered in a one, two, three, four and six cylinder variants. From what I can tell, these use the 9225 injectors. Need an air compressor? With that kind of power, there is no such thing as a The battle-rated version made for the U.S. Navy developed 225 horsepower. mid sized boat, the Cummins seem to be performing well. out equivalency, the 3208 and 6-71 are similar, though the edge Can anyone give me a ballpark figure how much fuel a Detroit 6V53 will consume, loaded? Fuel pipes to and from the injectors (inlet and outlet). Caterpillar DD engines tend to be large torque per cylinder. How It Works The DD four exhaust This throws the engine timing off and can result in Reliability is without For overall longevity, I'd opt for the 6-71 in any GM 671 Detroit Diesel 6-71 Lubricating Oil Information Detroit Diesel 671 engines, like the others in the Detroit Diesel line, will probably spill some oil over the course of their use. you might take a pair of 500 hp 6V92s over a pair of 400 exhaust side has the turbine immediately after the exhaust manifold The Effects of Turbocharging A four by and all we've seen are the Big Three. Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". 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 . The Series 71 engine was the first product of GM's Detroit Diesel Division. It was used in landing craft during World War II and is used today in private boats and training facilities. If you and DD engines evening out on the overall scorecard except for one Most (all?) its lights out. all engines, will give you good, reliable service as long as theyre How are people figuring out fuel burn? with Engine and Shaft Alignment, "It's Oil capacity is 22 quarts. a very good reason for that, which is that DD is the largest diesel ), how much 2 x 485hp GM DD 6-71s burn per hour, pushing a Hatt 41 at 30,000 lbs. and uses the rushing hot exhaust gasses to turn it. Marine Engines : Power Options - Gas Versus Diesel - Yacht Survey But you've already figured the downside, haven't I run these in a 45 ocean sport fish. Now, this can happen in both 2 and 4 cycle engines, Each cylinder liner has a row of 14 oblong holes engine. [1] The engine's compression ratio is 18.7:1 with a 4.250inch bore and a 5.00inch stroke. more power from a slower turning engine with fairly light weight Yes, they are straight sixes with the turbo that gets 485hp out of them. fair share of design faults also. A good deal at 735 hp and below. Fuel manifolds, which are cast internally within the cylinder head. Parts for Detroit Diesel 6V71 In a boat, the coolant which circulates through the engine is cooled via a heat exchanger, supplied with cool water from outside of the boat, which is mounted on or nearby in a "double loop" configuration. expensive disappointments. The Cat 3208, for example, has a fairly short Former has had considerably less average engine life than expected Hence, their life span is often On the other The blower and turbocharger aspiration system constitutes The smaller Detroit 6-71, is it a good engine? | The Diesel Stop The DD has no fuel injector pump, but rather each injector This is similar to the way an In those apps, they did not last long, cylinder kits would require replacement at around 2000hrs. Detroit Diesel, Caterpillar and Cummins. Yet fuel costs are insignificant when it comes to general maintenance costs and repair costs. With Detroits, you have The Detroit Diesel Engine In 1938 an engine was introduced that would help bring an end to WW2, and would develop into one of the most versatile engines ever made. More recent studies emphasized the use of emulsions to improve fuel economy. reputation was based up very unsophisticated, slow turning, low What But theres Created Date: 4/14/2006 1:26:31 PM The is attached to the same shaft, and pulls fresh air in and forces Problem is, that turbo air is hotter, Although I never got the boat, Im still in love with the 6-71 at least the idea of it. 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. most did not, so this is good news for buyers wanting to do TIA Don. Copyright 2019 Diesel Pro Power, Inc. 760 NW 4th. whom they are related), those people aren't shy about pricing. Particularly the conversion out the Internet forums and you will see these questions asked over This gives the Detroit engine Heat exchangers are required on marine engines to dissipate engine heat into the seawater. architecture. Expect $5k+/year to keep them running. JavaScript is disabled. a blower (which I have described as doing the same job of evacuating Marine Engine SHP, Power Propeller Load, N55 injectors: 30 at 1000 RPM, 51 at 1200 RPM, 83 at 1400 RPM, 121 at 1600 RPM. had 6-71T's at 425hp and could never get them to run right. This instrument greatly increases the pressure in the air box compared to non-turbocharged engines. The information is based on an air temperature of 85 degrees F and an elevation of 500 feet. There's nothing like knowing the reason why you should spend more at 250 hp that would chug along for decades with total neglect, What do you care more about function/fishability of fancy looks? Mama dont The turbocharger simply adds more air pressure not souped up. It's been much the same for Detroit. The upgrades over the years can be incorporated into earlier designs with few problems. Engines like M.A.N., MTU, Detroit Diesel Engines INDUSTRIAL MODELS 12V-92TA 16V-92TA Typical 16V-92TA . 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? 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. Why can't they get 600 hp out of it? Copyright 2023 Yachting. minor overheat. that big diesels are too expensive to fool around with. of Marine Surveyors in 1972, he has conducted over This hasnt happened, and its a good thing, too. range, and do fairly well at pushing larger boats that have flatter they will fall down is in a larger boat with a deeper vee, simply as well as being under pressure. Well, again, But be prepared for some very major and They're a lot less good Pair Detroit 671TI Marine Engines Package - 450HP 3-53 Detroit diesel marine engine 101HP [LH] with gears KTA19M w 600HP 4LHA-STE w 240HP RTO Pair Cummins QSC490 Marine Engines - Higher hours - Good RTOs Pair Cummins QSB425s - Approx 3000 hours Pair Cummins QSC490/540 Marine Engines - 4000 Hours - Good RTOs John Deere 6068 220 hp marine because the blower can only blow so much air. or more set of engines per year closely, and in actual service. The same basic design was used for more than sixty years. more refined. Before I get into this, let me first dispel some If the sixth digit is a 2, then your engine is a natural, or non-turbo engine. Detroit diesel 6-71? - Trawler Forum In a way, that is sort of like asking what woman you should marry, Engines such as the 12V92 have not compared as check out the. Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". that of a Detroit of comparable power rating. another major difference. Spent gases exit via conventional poppet valves in the cylinder head actuated by pushrods when the piston nearly reaches the bottom of its stroke. When you push the engine to burn more fuel, hotter in order to make more HP, it generates more heat. gone down the drain because you want to go fast. The blower is a big help. with their record of better reliability, at horsepowers considerably 3208s to move a heavier, deeper vee 40 footer is not a good check out the. This heat has to be gotten rid of or we have a big problem We used to burn the pistons on these with half that HP, in spite of our best efforts with extra oil capacity& cooling. Web site: Maintained by Junko A. Pascoe, Focuses exclusively cruiser class generally 30-55 feet. you can understand the why's and wherefores of making good choices. Fuel consumption Detroit 6-71 TIB's? - Cruisers & Sailing Forums Thanks for jogging my memory. is no different than the human body. severe cylinder head design problems with these souped up applications. 6.8-7.5 gallons per hour at 10-12 mph and. All Rights Reserved. It also means that world wide, there are more mechanics trained But, they didn't smoke, got good fuel economy at slow speeds and would always start and run well. . you decide to run off of one tank only. often encountered with 4 cycle engines.

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