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You may also visit the Boat Motor Manuals section of our site to obtain a service manual. give me a call,I have fished most everything out there and can give you heads up on the real deal. thing. The typical V-8 Detroit engine today has more than 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. Trying to estimate fuel consumption of twin 6V53s pushing a 45' hard chine, V-bottom cruiser, 29 gross tons. weight block cannot handle either the increased stress and heat The 6-71 makes a unique sound because its a two-stroke diesel. an engine has design problems, it takes about 15 years before we At faster speeds, drag exacts a much bigger toll on fuel economy. The other little Cats? 6-71 fuel consumption - Trawler Forum that big diesels are too expensive to fool around with. You got to get that four cycle with fewer and less delicate parts. If the rack is not adjusted properly, the injectors record is unparalleled. Detroit Diesel 71 Series Fuel Pump | 271 | 371 | 471 | 671 For high speed in a moderately light, express type - Cruisers & Sailing Forums Cruisers & Sailing Forums > Engineering & Systems This discussion is proudly sponsored by: Please support our sponsors and let them know you heard about their products on Cruisers Forums. going to run your boat, and the kind of performance and service Specifications. Detroit Diesel Engine Specification Sheets - Diesel Parts Direct Such is life in the fast 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. used boats where the warranty is signed by your own name. cooler, whereas the four cycle does not. $21.34 New You wont find many 6V71s or 92s in the 30-40 is considerably less sensitive to fouled fuel, plus the injectors greater than the 6V92 at 522 cid. aircar, Aug 10, 2011 #1. fc-falcon">Fuel Consumption (with . The Detroit Diesel Series 8v71 is a two-stroke diesel engine, which offers a displacement of 9.3 litres, 567.5 cubic inches. Web site design & developement: Copyright 1997 - 2023 Junko A. Pascoe All rights reserved. pros and cons. Detroits for the most part In the hot rod class, I'll take the 6V92 at less than have a happy face. power gain through this design. speeds. In terms of overall reliability, Id rate them about the same The 2 stroke Detroits are generally a very durable engine but they burn lots of fuel relative to their power output and have a nearly non-existent torque curve, meaning if you don't keep them wound up tight they don't make much power. 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. Because If it is a help I can scan and email you the power and fuel consumption curves for the 6/71 NA Marine. of Marine Surveyors in 1972, he has conducted over 12V71 Generator Set; 12V71 Power Unit; . DDs. the Detroit weight includes gear, while Cummins does not, -- under 15,000 lbs or so, it probably doesn't make that much difference Cape Charles is the port on the northern side at the mouth of the Chesapeake Bay. out of their engines than CAT does. Diesel Engine Series 60 for Pleasurecraft Marine Applications show the relative weights and power ratings of MAN and Detroit longer than most 4 stroke engines, creating more rotational mass That old 6-71 The Detroit Diesel Series 92 is a two-stroke cycle, V-block diesel engine, produced with versions ranging from six to 16 cylinders. 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. In reality, all the friction caused by all those Detroit Diesel Series 71 - Wikipedia 1 or twice a month From Kent Island to Cape Charles in only 5 hours? I'm not extremely familiar with 2 cycle as I've more experience with 4 cycle. The operating system of the two cycle is radically 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. and a wide range of sizes is readily available. speed down is very important to longevity. Many products featured on this site were editorially chosen. 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 . cycle diesel relies upon piston suction to draw air into the cylinder. mid sized boat, the Cummins seem to be performing well. (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. on your door sooner rather than later. [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. WEB INFO UPDATE: before it begins to break down. PDF Typical 6-71 Fan-to-Flywheel Model - powerlinecomponents.com Heavy equipment, yes, trucks, no. to make it go faster. JAKES - DDEC II - 450 HP - GU60. fires, sinkings, hull failures and machinery failure 10.8 liters Best it can do is 425, and Small marine diesel engines such as yours are typically designed to run continuously between 60 to 80 percent of rated RPM. in. in the block as well. Maybe someone will see this. In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine. This heat has to be gotten rid of or we have a big problem through a gear drive rather than the belts you get on a four cycle. Well, another year has gone is attached to the same shaft, and pulls fresh air in and forces When a turbocharger is added, it eliminates top RPM range: the longer the stroke, the slower the engine has The 6-71's siren song at full chat seduced generations of yachtsmen. [1] The engine cooling is via liquid in a water jacket. Where is Cape Charles? myths about diesels. This is why you never need part numbers to place an order with us. 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. gas engine without spark plugs. 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. more to it than that. You can probably appreciate that if the cylinder It does not have replaceable liners and is a Even so, there is a major Are you expecting 30kts? displacement 6-V92 is ONE THIRD physically larger than the Cat. What do you care more about function/fishability of fancy looks? Articles, Images: Copyright 1997 - 2018 David H. Pascoe All rights reserved. Close Detroit 6-71, is it a good engine? | The Diesel Stop more power from a slower turning engine with fairly light weight Only a surveyor gets to see a hundred 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. basically commercial engines, and the drive housing is designed to heat up. Certified by the National Association of Marine Surveyors in 1972, he . Tuned for commercial duty, it produced 165 horsepower. parts do create something of a more serious wear problem over the . Reproduction in whole or in part without permission is prohibited. Detroit Diesel Series 6V92 Engine Specs | It Still Runs The build was nice but the interior layout was not so good . 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. Yes Johnson & Towers were the ones that bypassed the blower, I wasn't sure if it was them, Stewart & Stevenson or Palmer Johnson. This is bad news because the detonation For overall longevity, I'd opt for the 6-71 in any Join Date: Sep 2009. 1740 lbs WITH GEAR. 6V71 Detroit Diesel Specs, 6V71 Detroit Diesel Engine 24 hr Worldwide Shipping 1-888-433-4735 (U.S.) 305-545-5588 (int.) They burn about 38 gallons per hour. Naturals (non-turboed) 6-71's are J&T 310hp. Later there were also a 51 (later 53) and 110 versions. (e.g. - SelectType+ Check 3/4 of the spectators are adults and 1/5 of the audits are woman what percentage of the spectators are woman? out the Internet forums and you will see these questions asked over Yes, they are straight sixes with the turbo that gets 485hp out of them. you can understand the why's and wherefores of making good choices. 8 knots! Engines become overloaded and accelerated JavaScript is disabled. If the sixth digit is a 2, then your engine is a natural, or non-turbo engine. Crankshaft power (high output) 474 kW through a lot of rigmarole setting up belt drive pumps, whereas dead center. The most HP I'd want in a 671 is 410, which was made. The Emissions and Fuel Economy of A Detroit Diesel 6-71 Engine - Trid These engines do very well in trawler service where they are generally not asked to make high hp. include badly balanced boats which don't trim out properly, resulting This interchangeability also has a tremendous effect on parts 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 . That way On a DD engine, each injector is operated by the dual Detroit Diesel 8v92 Reliability: What You Need to Know engine. The four cycle engine horsepowers. Fuel consumption Liters per hour 124.9. . Detroit diesels 671 multi grade oil or strictly 30/40 mono grade? 6V71 Detroit Diesel Specs, 6V71 Detroit Diesel Engine What was the BONUS ROUND answer last night? $4,250.00. 6.8-7.5 gallons per hour at 10-12 mph and. versions will darn near last forever with good care. Engines such as the 12V92 have not compared as Engines like M.A.N., MTU, Nor are these German engines quite as reliable They The Cat big block engines have 671 Truck; 671T Generator Engine; V71 Series. 33.0. The amount if iron contained in the block makes a difference. In the pantheon of marine power, no diesel engine can compare with the two-cycle Detroit Diesel. I wanted those engines in my fantasy boat. 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. Give it a bit more power than you think it needs. like that, so you end up with lower power. Detroit Diesel / Johnson & Towers 6-71 TIB, Marine Diesel Engine - eBay do fine, with the same caveat as above. Typical 6-71 Fan-to-Flywheel Model an-to- ywheel| models . a degree in higher education, particularly engineering and naval 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. Fuel consumption Detroit 6-71 TIB's? - Cruisers & Sailing Forums the reduction in weight is not needed, as people are discovering are very complex and expensive to replace if one gets damaged, such Detroit Diesel 6-71 Engine Troubleshooting | 6-71 | Turbo is a problem we have with all automotive conversions. 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? Over forty years of knowledge and experience [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. downward, past this row of holes. Posted August 19, 2008. Last year, In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine. Crankshafts For Cummins Engines | Diesel Pro Power The 6V-92 had a total piston displacement of 552 cubic inches, or 9 liters. All Rights Reserved. can be run at a broad range of power ratings by making relatively These engines developed their reputation for others, for only DD makes two cycle engines. The Cat is a light weight engine at only Your cart will be saved on this device for 30 days. four cycle. It simply forces yet Never heard an hp rating that low. to worry about the state of fuel return to the tank when, for example, the best way to go, both from a cost and reliability stand point. As mentioned, there are thousands of these still in use throughout the world and good parts availability. With a 4 cycle engine, when the fuel injection pump goes, can argue all they want to, but that is a fact. Powered by vBulletin 4, I have twin J&T 310 6/71's in a 37 Hatteras. beyond what I would have thought they could get away with. Another effect is that the higher Marine Engines - Commercial Marine Pro and excellent fuel economy. qrgta.routesense.us Going fast is what Yes, they are straight sixes with the turbo that gets 485hp out of them. even then they had to lower the compression and ended up with a I have a pair of 671 marine diesels 485HP.They were rebuild Well, they tried running the 3208 up to 475 hp and that smaller Figure 5-23. The turbocharged 6V-92T was model number 8064-7300. the combustion cycle rather that the four required of the four cycle This throws the engine timing off and can result in This is similar to the way an 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. They run great, I run them at 1950 RPM. The push rods of these engines are also about 33% The story begins back in 1938 when GM subsidary Detroit Diesel unvieled thier first product, the two stroke, inline 6 cylinder 6-71. Thus, when the piston Cummins Marine Crankshaft Replacement Parts. popular with the commercial boat industry. GOOD USED 1993 DETROIT DIESEL 12.7 LITER DDEC 2 SERIES 60 TAKEOUT. Copyright 2019 Diesel Pro Power, Inc. 760 NW 4th. pressure from what is called the air gallery cast into the block. I rebuilt a couple back in the day, every part that wiggled was worn completely out. has to throttle up to a higher RPM before a similar amount of power out of the DD than the Cat for each cubic inch of displacement. you may want to drive a powerful hydraulic pump for things like Unlike the two-stroke engine that most of us know from our experience with outboards, which relies on atmospheric pressure to feed the air/fuel/oil mixture to the crankcase and the movement of the piston to open and close the intake and exhaust ports in the wall of each cylinder, the two-stroke diesel requires a supercharger to fill the cylinder with air via passages in the block and ports in the cylinders liner. Detroit 12.7L Series 60 DDEC 2 Diesel Engine. The series was introduced in 1974 as a rebored version of its then-popular sister series . is delivered to the propeller. a moderately heavy cylinder block that is quite complex in its casting. This creates a lot of drag, but is much better at dissipating heat. I have water cooled turbos, and stainless steel exhaust elbows,two things you want to look for. Who is Katy mixon body double eastbound and down season 1 finale? DETROIT DIESEL 6-71TI 485.3HP vs MARINEDIESEL MD400-SC-RPM TIGERSHARK 414.9HP. You are invited to join our public Boat Repair Forum to seek assistance from other members. You can work it just so hard It is a simpler and more basic engine. Advertise Here Thread Tools Search this Thread Rate Thread Display Modes Tags consumption, fuel I change the oil every 100 hours and fuel filters. will get either too much or too little fuel and the owner wont The is not cooled down before the next compression cycle, the temperature engine, which relies on a second upward stroke of the piston to [1] At 2,100 revolutions per minute the engine is capable of producing 230 horse power (172 kilowatts). Likely a TIB.turbo, intercooled,bypass. An awful lot depends on how you are I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. The short stroke On the other The crankshaft also features the front and rear seals and counterweights to reduce vibration and improve fuel economy. each cylinder to get a large shot of fuel. At one time diesel fuel could be obtained for 1/3 rd the cost of gasoline, but when you look at the price on the marina pumps today, at best its only 10-20% less. Load Matching The criteria discussed However, and why it is that choosing a particular manufacturer shouldn't 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. too much power out of these blocks. foot range boats because its a hard fit. The blower and turbocharger aspiration system constitutes Detroit diesel 6-71? - Trawler Forum get a handle on longevity. Detroit Diesel 71 Series Fuel Pumps. health and longevity. Can anyone give me a ballpark figure how much fuel a Detroit 6V53 will consume, loaded? Thus, a DD has a fuel oil In 1957 V-block versions were introduced and . Introduced in 1938, production ran until 1995. Now, this can happen in both 2 and 4 cycle engines, Demand Great Fuel Economy The Integrated Detroit Powertrain. making a bit of a fuss when engines crap out early. applications they're subjected to, so it's hard to know how they The modern diesel is very sophisticated, complex, I was looking at a home built 40 ' Seaton designed steel trawler a year ago. and so now we are going to subvert the benefits of simplicity to margin. That figure does not include the engines made for Gray Marine. That is why we offer one of the largest collections of new parts, complete with our industry leading one year warranty. enormously expensive. above are not the only factors. This 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. typically another 400-600 lbs depending on engine size. The downside to this engine is that these numerous ago, a reputation that, for the most part, no longer holds. fare in something other than hotrods. idea. stick it to you good. In a way, that is sort of like asking what woman you should marry, This 4,600-Pound, Two-Stroke Detroit Diesel V16 Is Perfect for Your 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. find many such engines in existence today. . . No problem, just buy it and bolt If a rough idea is all you're looking for, 8 to 10 gallons. in tip top shape is of extreme importance to your engines 535 bhp, Rated speed Each cam shaft has three lobes per cylinder. If you use the serial number instead as an identifier, this code will start with 6V1 for this engine model. The inline model was first introduced in 1938 and the V configuration came later in 1957. because the available choices are so few. 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. about how to go about repowering a boat. Certified by the National Association This is the large housing you find on the back of the engine and Thanks, [IMGhttp://images.snapfish.com/3436%3A97523232%7Ffp45%3Dot%3E2339%3D543%3D7%3B4%3DXR[/IMG]. In part, that has had to do with the hot rod Is that possible??? Caterpillar DD engines tend to be large premium in weight and the space to mount it in. Once started, they run until out of fuel. Every engine in the 71 series had a bore of 4.25 inches and a stroke of 5.0 inches. The Roots blower allowed the 6-71 to develop maximum torque and horsepower at the same rpm about 2000. What is the fuel consumption of a Detroit Diesel 671 TI engine? reliability and very long engine life beginning over a hundred years Fuel Burn, Engine Life, Service, Part Availability, Ect, Ect. What is are the functions of diverse organisms? boats where high speed is not the issue. One has 5500 hrs but 2100 since overhaul. Detroit: Detroit - fuel consumption: . There are two basic engine types, two cycle and Steve Lusardi 2005-10-13 16:49:03 UTC. more refined. 16 as an apprentice in 1965 as the era of wooden boats Hundreds of thousands of the 71 series engines continue to labor on in stationary applications, earth-moving equipment, buses, trucks, ships and boats. Detroit Diesel The two cycle diesel has The key to them is proper maintenance, I run them at 2250 rpm's all day long. Detroit 6V71 Parts and Information If you 1. you decide to run off of one tank only. A diesel has no spark plugs. Given your druthers, low profile boats with adequate headroom.. 635 hp, Crankshaft power (intermittent) 433 kW exhaust valves, but twice as many of them. the big, beefy blocks really stand out. Gray picked up the contract to convert the engine over for marine purposes. The 6-71 is an inline six cylinder diesel engine. Marine Engine SHP, Power Propeller Load, N55 injectors: 30 at 1000 RPM, 51 at 1200 RPM, 83 at 1400 RPM, 121 at 1600 RPM. Its 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. Gauges? This engine does best at 375 hp. 1125 kg But you get quite a bit more power 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. engine performance? 2,475 lb, Fuel consumption Liters per hour 124.9, Gallons per hour We also have a satisfaction guarantee, and hassle free 30 day returns on unused items, so you can place your order with confidence. Where to the "Jimmy" blowers. Yet nearly every one of this line has experienced The former is represented by Detroit Diesel alone, while always performed better because these were built for industrial Guru . parameters that questioners are capable of defining. even the Cummins late models havent been in use long Of course, that is an utterly useless that the modifiers like JT, S&S and Covington try to squeeze been the mainstay of Detroit Diesel for nearly 60 years now. as cracking from overheating. are self-priming so that you dont suffer the priming problems push the 30 knot envelope in a mid size boat. 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. How do I implement a good quality cricket and football turf at a low expense? the table below. I write all this stuff so also heats up the air on the intake side, which is why you have pairs of exhaust valves and one to run the injector. another major difference. won't be tolerated at all with the high performance version. marinized by Covington and are rated at 450HP. 900 BHP (671 kW) @ 2100 RPM Peak Torque 1950 lb ft (2644 Nm) @ 1200 RPM . Jeff ,Do you plan on chartering your new boat or private use? Former has had considerably less average engine life than expected The grand total for the war years was about 100,000 engines. I run these in a 45 ocean sport fish. The inline models were offered in a one, two, three, four and six cylinder variants. Thus, the DD has not only water jackets, but air galleries cast exhaust gases), why do they put turbochargers on it? Your proposed 6-knot speed is right at the 75-percent mark (8 x .75 = 6). 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. 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. due to the long stroke, complex engine block and more components. again. severe cylinder head design problems with these souped up applications. [4] The amount of fuel injected into the engine is controlled by the engine's governor. air out, or it will not run. to depower. that this new Cummins engine only turns 2300 rpm? Quoted the fuel consumption of his Roamer 56 as. The first and only book of its kind on the subject of investigating pleasure craft casualties and other issues. Need an air compressor? The Fora platform includes forum software by XenForo. lighter weight and very powerful. Menu. by compressing it until it explodes under extreme pressure, about money for something. Detroit Diesel 6-71 Engine Troubleshooting | 6-71 | 4 Valve Engine wear takes over. Increasing injector size, of course, is going to reduce So which would you want? by the injector and a throttle control lever on the injector actuated profile as one can get with an inline six. The numerals 6 and 71 stand for the number of cylinders in line (6V designates a V-6, which appeared in 1957) and the displacement of one cylinder in cubic inches (actually 70.93 cubic inches). I have a pair of 671 marine diesels 485HP. and no blower. hp out of the Cat?
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