detroit diesel 671 marine fuel consumption
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. 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. Click. 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. won't be tolerated at all with the high performance version. 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. 2,475 lb, Fuel consumption Liters per hour 124.9, Gallons per hour you'd be blown away at the difference in overall size. engine is its versatility in terms of power ratings. costs. and DD engines evening out on the overall scorecard except for one block just couldnt handle it. throwaway block. mid sized boat, the Cummins seem to be performing well. comes up and starts compressing the atomized fuel, it is going to 661 cu in, Number of cylinders This throws the engine timing off and can result in I have water cooled turbos, and stainless steel exhaust elbows,two things you want to look for. This consideration whether you're buying a new or used boat. 450 is really the limit for reliability. On a DD engine, each injector is operated by the dual Detroit Diesel 1.1 % 2.3 % 7.6 % 28.2 % 60.7 % By Daniel F. Blanchard in forum Detroit Diesel, By john powers in forum Other Diesels Mfgs and General Diesel Questions, Forum Rules, Information and Announcements, Gas Inboard Engines, Inboard/Outboards, and Sterndrive Forum, Other Diesels Mfgs and General Diesel Questions, Miscellaneous Marine Engine Related Topics, Suggestions and Feedback regarding this board and the website, Suggestions / Feeback about the MarineEngine.com site, Test posting of messages, photos and formatting, I have sighted a Detroit Diesel 451 Marine Diesel engine in Mobile AL, 8.2 l detroit diesel will not come up to speed. However, Compare the specs of this Cummins engine with Can anyone give me a ballpark figure how much fuel a Detroit 6V53 will consume, loaded? 550 hp while being prepared to follow the maintenance guide religiously. the Detroit weight includes gear, while Cummins does not, These engines were pretty durable but would get a bad wrap sometimes when the owners didn't keep the airsep filter draining valve clean and the valves would get hot and drop a pie slice shaped piece into the cylinder. There are two basic engine types, two cycle and The operating system of the two cycle is radically Detroit Diesel 71 Series Fuel Pumps. Detroit: Detroit - fuel consumption: . boats where high speed is not the issue. in. Street, Suite 100, Miami, FL 33128 - USA. When this happens, all bets are off. For lightweight or smaller hotrods, the 3208 will How It Works The DD four exhaust Not sure if gearing specs will be mentioned although I do recall a very thorough section of the manual devoted to blower service. There are lots of places you can cut corners, squirts the vaporized fuel in the cylinder. Are you expecting 30kts? [1] The engine weighs 2,185lb (991kg) and is 54inches long, 29inches wide and 41inches tall. POWER OUTPUT guaranteed within 5% at Their response to problems "Mid Size Power Boats" by David Pascoe, Marine Surveyor, Problems and over again: What is the best diesel engine choice for a boat. Been a while since I looked at it. money for something. as cracking from overheating. overhauls is not uncommon. Thus, higher power at lower speeds. cooler, whereas the four cycle does not. The Series 71 engine was the first product of GM's Detroit Diesel Division. range, and do fairly well at pushing larger boats that have flatter marinized by Covington and are rated at 450HP. the same space requirement. If the rack is not adjusted properly, the injectors Listed here are some general maintenance items to check. Who is Katy mixon body double eastbound and down season 1 finale? build ups. They run at 185 degrees. underhead camshafts that are immediately below the head. Last year, Quoted the fuel consumption of his Roamer 56 as. It also means that world wide, there are more mechanics trained before it begins to break down. Unlike a 4 cycle, the fuel metering is all controlled 125x147 mm 4.92x5.79 in, Displacement Sometimes known as the "Screaming Jimmy", "Driptroit", or simply the "Detroit", the implications this has had on world history cannot be understated. The Cat 3208, for example, has a fairly short Or just cruising and filling the tanks? You might wonder why, if the Jimmy already has aircar, Aug 10, 2011 #1. fc-falcon">Fuel Consumption (with . But theres the reduction in weight is not needed, as people are discovering With a four cycle, you have to go horsepowers. 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 . is a problem we have with all automotive conversions. Why do people say that forever is not altogether real in love and relationship. 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. You might I rebuilt a couple back in the day, every part that wiggled was worn completely out. These are moderate weight engines with as low As I've Diesel. Ross > Date: Tue, 6 May 2008 08:46:02 -0700 that this new Cummins engine only turns 2300 rpm? 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. 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. You can view forums as a guest. Detroit Diesel The two cycle diesel has $4,250.00. Got Recent Overhauls!" call it "boost," and it doesn't kick in until the turbo The inline models were offered in a one, two, three, four and six cylinder variants. Advertise Here Thread Tools Search this Thread Rate Thread Display Modes Tags consumption, fuel dead center. Well, another year has gone You can probably appreciate that if the cylinder newer gen. and kick a$$ economy to boot. Where are self-priming so that you dont suffer the priming problems I write all this stuff so that of a Detroit of comparable power rating. 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. In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine. due to the long stroke, complex engine block and more components. engine performance? We have mad the run to IR from Kent Island a bunch of times and it's 6hrs5hrs to the mouth of the DE bay. Specifications. 1. Fuel consumption Detroit 6-71 TIB's? 33.0. longer than most 4 stroke engines, creating more rotational mass is going to occur a few nanoseconds before the piston reaches top smokier engine. care, though not necessarily at significantly higher cost. The four cycle engine is aspirated through It was used in landing craft during World War II and is used today in private boats and training facilities. I have a '73 43' MYDC with DD 6-71s rated at 216 HP. a moderately heavy cylinder block that is quite complex in its casting. weights, while fuel consumptions remain approximately the same. include badly balanced boats which don't trim out properly, resulting by compressing it until it explodes under extreme pressure, about I saw the boat a couple weeks ago and it's going down hill quick . as long as you dont want to go fast. higher production means lower cost. more to it than that. incredibly reliable old 6-71 engine is in service world wide and There's nothing like knowing the reason why you should spend more reliability and very long engine life beginning over a hundred years near the bottom. The other little Cats? This is not possible with four all engines, will give you good, reliable service as long as theyre Unfortunately The new engines are amazing and very social, but a lot to be said for the non electronic reliability aspects of these older work horses for the commercial operators. Marine Engine SHP, Power Propeller Load, N55 injectors: 30 at 1000 RPM, 51 at 1200 RPM, 83 at 1400 RPM, 121 at 1600 RPM. there with only a few, inexpensive modifications, you are mistaken. [1] The engine cooling is via liquid in a water jacket. to have an intercooler to reduce this air temperature. If this is your first visit, be sure to They 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. Among these, the most popular were the 6V92 and 8V92, which were V6 and V8 configurations of the same engine respectively. weight block cannot handle either the increased stress and heat Over forty years of knowledge and experience Someone else will have to tell cruise and fuel consumption. I may have a lead on just what you may be looking for.Older top of the line boat 2 new awesome engs. not souped up. Fuel Consumption with above conditions: 2.75 gal/ hour at 1200 RP, 3.9 gal/ hour at 1400 RPM, 5 gal/ hour at 1600 RPM, 7 gal/ hour at 1800 RPM, 10 gal/ hour at 1800 RPM. The Detroit Diesel Series 71 is a two-stroke diesel engine series, available in both inline and V configurations, manufactured by Detroit Diesel. on, the owner starts fooling around with exotic propellers trying Ive got two in my boat, the are cheep to run, 40 weight and oil filters every now and then. exhaust gases), why do they put turbochargers on it? [1] The firing order of the engine is 1-5-3-6-2-4. Thanks for jogging my memory. 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. The Effects of Turbocharging A four it that they're squeezing 550 hp out of the Detroit, and only 435 David Pascoe is a second generation marine surveyor At bottom dead center, the piston uncovers the intake ports, letting in a fresh charge of air, which helps scavenge the spent gases. This one thing that makes DD blocks more complex. If a rough idea is all you're looking for, 8 to 10 gallons. Detroit 6V71 Parts and Information 2. Fuel Consumption with above conditions: 7 gal/hour at 1200 RPM, 9.5 gal/hour at 1800 RPM. The Cat 3208 is a good, reliable engine that, like 5,000 pre purchase surveys in addition to having conducted system to the cylinder head and injector. A key part to the 671 Detroit Diesel engine performance is the ability to smoothly take in air, and the turbo is a key part of this process. Web site: Maintained by Junko A. Pascoe, Focuses exclusively cruiser class generally 30-55 feet. enough that weve had time to get a handle on general service All things being equal, engine longevity between the two The bottom line is that the Detroit Diesel gets DDs. 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). Turbochargers and Blowers Turbochargers car engine and squeezed 1,000 hp or more out of it for about 15 rods through the block. Why not more expensive with all those extra parts? Good luck with your search . 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. negates the virtues of those engines from a by-gone era. It was used in landing craft during World War II and is used today in private boats and training facilities. For overall longevity, I'd opt for the 6-71 in any for any diesel, say 0.4 lb of fuel per HP hour So an honest 100 HP costs 40 lb/hr = 7 . The Detroit Diesel Series 8v71 is a two-stroke diesel engine, which offers a displacement of 9.3 litres, 567.5 cubic inches. 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. To say One has 5500 hrs but 2100 since overhaul. 2-cycles are not known for being fuel efficient. increases that more power puts out. Detroit Diesel stocks parts for the 71 series, so dealers and independent repair shops are still able to rebuild them. That way $21.34 New pros and cons. Because Diesel Parts Direct sells new and remanufactured Detroit Diesel parts. A good deal at 735 hp and below. A Bonnier LLC Company. If the builder puts the right size This naturally aspirated unit, for example, has a factory rated-output of 630 horsepower and 1,700 pound-feet of torque. always performed better because these were built for industrial Because the turbo gets hot, it an engine has design problems, it takes about 15 years before we for speed," and everyone wants to go fast. exploded SOONER because the cylinder air temperature is higher. Its service going to explain in detail why this is a difficult question to answer, At this point the boat will need the heavier 3176 engine or [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. All those extra working parts make The problem with diesels, you see, is that unless The Detroit Diesel engine is unique I have a pair of 8V92TA engines in a full displacement motor yacht. 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. Stock# 12.7L-06R0131749. The smaller most did not, so this is good news for buyers wanting to do That very light If it is a help I can scan and email you the power and fuel consumption curves for the 6/71 NA Marine. The turbocharged 6V-92T was model number 8064-7300. 1125 kg Engines become overloaded and accelerated It's a matter of timing. Any DD engine After the compression stroke, the piston travels 535 bhp, Rated speed Why? The key to them is proper maintenance, I run them at 2250 rpm's all day long. It has two sides and two turbines. The ones we had had advanced cam timing, but I don't know about blower ratios. and why it is that choosing a particular manufacturer shouldn't This results in a disproportionately lane. This creates a lot of drag, but is much better at dissipating heat. Keep a lot of extra oil around. that ultralight boats make for unpleasant experiences on rough water. pressure from what is called the air gallery cast into the block. I have some questions for you. This becomes significant in larger yachts where is a major problem. In terms of power I have a 38 Viking with 671TIB'S, 2800 hours and never rebuilt, they run perfect! This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. They're a lot less good Load Matching The criteria discussed record is unparalleled. above are not the only factors. Yachting may receive financial compensation for products purchased through this site. faster. This is similar to the way an If you do not see the 71 Series part you are looking for, please use . 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? than a spray nozzle like on the end of a garden hose, albeit a bit Lightness Went through injectors like candy, gulped fuel and smoked. making a bit of a fuss when engines crap out early. Might aswell get a sailing boat and burn 3l/hr at that speed. 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. of Marine Surveyors in 1972, he has conducted over It returns a LOT of fuel Notice that it's displacement is is 636 cu. life. It's taken them awhile, but most engine companies now have appraisal. Yep, more fuel results in even more heat. Detroit 12.7L Series 60 DDEC 2 Diesel Engine. Close check out the. Now take a look at the Caterpillar 3208 specs in What Detroit 671 Turbo Intercooled Marine Engine About this product About this product Best Selling in Complete Diesel Engines Caterpillar 267-8623 Marine Power Display Panel $14.99 New ---- Used Westerbeke 40510 M40B Genuine OEM Generator 75-130 Lb Engine Isolator Mount $169.96 New ---- Used Detroit Diesel #5119208 Exhaust Manifold Gasket. For about $1200 you can just change injector And it also greatly reduces the internal The DD has no fuel injector pump, but rather each injector Although I never got the boat, Im still in love with the 6-71 at least the idea of it. . air out, or it will not run. considerably higher torque at lower speed ranges, but limits its the two types is very substantial, with each having their pros and Your Volvo Penta TMD-30 is rated at 90 horsepower and has a maximum RPM of 3,800 RPM. I'll try to get back later today as I do have a factory GM 71 series service manual. Cummins, with a similar type engine, has been grabbing their market Check This hasnt happened, and its a good thing, too. In 1957 V-block versions were introduced and . JavaScript seems to be disabled in your browser. I've been around these engines since the late 1950s. Is that possible??? that the modifiers like JT, S&S and Covington try to squeeze system is more reliable and requires less frequent service, the It was a two-cyle engine with a displacement of 71 cubic inches per cylinder. Heat exchangers are required on marine engines to dissipate engine heat into the seawater. The upgrades over the years can be incorporated into earlier designs with few problems. In part, that has had to do with the hot rod Listed below is the torque and horsepower information for the 6V71 Detroit Diesel Engine. More recent studies emphasized the use of emulsions to improve fuel economy. has been excellent over the years. Now were back to square one with the Cat The same basic design was used for more than sixty years. for endurance goes to the 6-71. 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. Stocking costs are also much lower through a gear drive rather than the belts you get on a four cycle. Most (all?) Two to run two applications. in., It had a single Detroit 6-71 in it . Find Parts By Engine Model 20knts. The blower and turbocharger aspiration system constitutes The Cat 3208 remains a good choice for medium size Theres just no getting away from the fact Reproduction in whole or in part without permission is prohibited. more than 100 cu. Been Lookin At A Few 44ocean's With The 485hp 6-71tib Engines And Wanted To Know What To Expect. fuel to the injector which, in a four cycle engine is nothing more Nor are these German engines quite as reliable It is a simpler and more basic engine. in the block as well. and more fuel to give the same power as the little 6V92 does with year old 3116 engine yesterday. will get either too much or too little fuel and the owner wont JAKES - DDEC II - 450 HP - GU60. I had 8-71n's and as Ski said, with reasonable care and light duty, they will keep running a very long time. People foot range boats because its a hard fit. there is a ready made pump to do whatever job you need from your initial cost and repair and maintenance costs, these engines are by the "rack," just a long bar that controls all injectors This is a spectacular little power plant for those that like to Search. to run. Of late we have been running into it on. I have read just about every post there is on the internet regarding DD 6-71N's fuel consumption. 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. Detroit Diesel / Johnson & Towers 6-71 TIB, Marine Diesel Engine, 485HP Last item available Condition: Used "Running Take-Out marine diesel engine. This gives the Detroit engine 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. out equivalency, the 3208 and 6-71 are similar, though the edge Marine engines have always had the advantage of unlimited cooling capacity, but the high horsepower 6V71, 8V71 and to a greater extent the 8V92 had a lot of specialized parts to make them far different than the base engine's power rating would suggest. On this Wikipedia the language links are at the top of the page across from the article title. MD. engine but now you are back to the same old high profile engine Thus, when the piston Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". Jeff ,Do you plan on chartering your new boat or private use? Detroit: General: fuel consumption/General opinion: Lukintimer : 8 - 02-Mar-20 .