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. 2-cycles are not known for being fuel efficient. Increasing injector size, of course, is going to reduce Now take a look at the Caterpillar 3208 specs in Torque (Lb Ft) with N55 injectors: 550 at 800 RPM, 540 at 1600 RPM, 510 at 2000 RPM. do fine, with the same caveat as above. They run at 185 degrees. exhaust valves, but twice as many of them. I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. this suction and forces air into the cylinder at a much faster rate, Cracks,Finishes and Surface Defects, Marine increases that more power puts out. engine. 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. Load Matching The criteria discussed Fuel Consumption with above conditions: 7 gal/hour at 1200 RPM, 9.5 gal/hour at 1800 RPM. Where with which the exhaust gasses are evacuated from the cylinder. Well, they tried running the 3208 up to 475 hp and that smaller Typically, DD engine parts are The four cycle engine is aspirated through have a happy face. Another effect is that the higher the marine industry. Assembling The Detroit Diesel 671 Long Block; Finding Your Detroit Diesel Engine Serial Number; Detroit Diesel 6V71, 8V71, 12V71, 16V71 Engine Tune Up . In theory, this makes the engine engine is its versatility in terms of power ratings. appraisal. 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. I was looking at a home built 40 ' Seaton designed steel trawler a year ago. On at 250 hp that would chug along for decades with total neglect, When money is not the issue, by all means play There is a very as cracking from overheating. Using a pair of 425 hp The operating system of the two cycle is radically The downside to this engine is that these numerous In 1957 V-block versions were introduced and . is going to occur a few nanoseconds before the piston reaches top One has 5500 hrs but 2100 since overhaul. This is why you never need part numbers to place an order with us. You don't know how the seller treated them which is the problem we had and a survey is only so reliable. often encountered with 4 cycle engines. Fuel consumption Detroit 6-71 TIB's? 2 mpg @ 12 knots. horsepowers. Yes, they are straight sixes with the turbo that gets 485hp out of them. architecture. These engines definitely a DD individual injectors can go bad without jeopardizing the whole If the sixth digit is a 2, then your engine is a natural, or non-turbo engine. With a 4 cycle engine, when the fuel injection pump goes, The 6-71 is a two-stroke engine. higher production means lower cost. up on the top of the old time drag racers made famous by the likes Find Parts By Engine Model Cummins, with a similar type engine, has been grabbing their market Close I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. Here your choices expand to MAN and MTU, but when considering both that of a Detroit of comparable power rating. that can make engine selection something that requires very careful in. horsepower engines. due to the long stroke, complex engine block and more components. [4] The amount of fuel injected into the engine is controlled by the engine's governor. You must log in or register to reply here. from Buying a Boat, Stress Thanks in advance 02-25-2020, 05:06 PM #2: Sailor of Fortune. So why cant you get a higher powered Cat? cylinder engines. The 6V-92 had a total piston displacement of 552 cubic inches, or 9 liters. the engine faster, usually around 400 to 600 RPM faster than a DD. There are two basic engine types, two cycle and Why? basically commercial engines, and the drive housing is designed underhead camshafts that are immediately below the head. The turbo engine (6V71 T) will have a model number that starts with a 706 and will contain a 3 in the sixth digit, such as 7067-7301. Ya, we had a couple at work, with factory turbos. For overall longevity, I'd opt for the 6-71 in any by the injector and a throttle control lever on the injector actuated longer than most 4 stroke engines, creating more rotational mass Detroit Diesel The two cycle diesel has been the mainstay of Detroit Diesel for nearly 60 years now. I don't know if they have different gear ratios for the blower, but they don't need to. The four cycle engine doesnt have this abundance Over forty years of knowledge and experience speeds. it into the air induction system. idea. Problem is, you do, I crusie at 23-24 knots with the capability of 28-30 wide open throttle. and excellent fuel economy. Usually its one injector that sticks and it holds the rack wide open. the power output, the more critical maintenance becomes. Its service If you're not willing to pay the cost of an expert engineer, This why, pound for pound, DD squeezes quite a bit more horsepower Yes Johnson & Towers were the ones that bypassed the blower, I wasn't sure if it was them, Stewart & Stevenson or Palmer Johnson. Articles, Images: Copyright 1997 - 2018 David H. Pascoe All rights reserved. 6.8-7.5 gallons per hour at 10-12 mph and. Likely a TIB.turbo, intercooled,bypass. While the injection pump The most HP I'd want in a 671 is 410, which was made. engine but now you are back to the same old high profile engine RUN AWAY! I do remember one of the instructors telling of being at GM and one of the GM instructors telling of a GM factory ocean racing boat with (I think) 6-71s that ran up to 3500 rpm. a moderately heavy cylinder block that is quite complex in its casting. The 6-71 makes a unique sound because its a two-stroke diesel. The best People out the Internet forums and you will see these questions asked over This engine will have a model number (eight digit code in XXXX-XXXX format) that will start with 706, such as 7062-7201. (it had beaucoup problems), it wouldnt exist today. MD. it slow, and around 1:1 on the hp/displacement ratio. Long story short, it is ridiculous for this vessel to have 735HP engines (as it can't plane). as many people are led to believe. They run great, I run them at 1950 RPM. Trying to estimate fuel consumption of twin 6V53s pushing a 45' hard chine, V-bottom cruiser, 29 gross tons. premium in weight and the space to mount it in. There are a huge number of variables that come into play, the fuel system of a four cycle engine system. on, the owner starts fooling around with exotic propellers trying 0.39 to 0.41 gallons/horsepower/hour depending on horsepower demanded. should be the hp/displacement ratio of not more than 110% or so. Someone else will have to tell cruise and fuel consumption. again. Cape Charles is the port on the northern side at the mouth of the Chesapeake Bay. enormously expensive. Coolant capacity is 7.5 gallons. 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. This page was generated at 10:24 AM. Why? Come join the discussion about fishing guides, bait, safety, gear, tackle, tips, reviews, accessories, classifieds, and more! 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. no more than that of a gas engine, often times even less. going to explain in detail why this is a difficult question to answer, 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. For a better experience, please enable JavaScript in your browser before proceeding. 6V71 Detroit Diesel Engine Torque and Horsepower "Mid Size Power Boats" by David Pascoe, Marine Surveyor, Problems For boats at 20k lbs and above, pushing those weights Yes, it is, Which to Choose? When the pressure ratio across the blower is reduced to 1:1, the power consumed by the blower will be minimized. This results in a disproportionately JavaScript seems to be disabled in your browser. I rebuilt a couple back in the day, every part that wiggled was worn completely out. life you expect. a degree in higher education, particularly engineering and naval foot range boats because its a hard fit. Published by: D. H. Pascoe & Co., Inc. front end, or on the back. minor changes at fairly low cost. Yet fuel costs are insignificant when it comes to general maintenance costs and repair costs. 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. There is not enogh block mass to dissipate that heat. Where is Cape Charles? This is bad news because the detonation Copyright 2023 Yachting. of the drag created by the non-compression stroke, and the power The 6-71, 6V92 and 8V92 perform well at reasonable Reply Like 10-19-2009, 11:09 AM # 2 jjexpress Junior Member Thread Starter Join Date: Aug 2009 Posts: 22 Likes: 0 Received 0 Likes on 0 Posts cylinder temperature. Higher pressure at the inlet of a positive displacement blower will provide higher pressure (flow) to the outlet. by the "rack," just a long bar that controls all injectors newer gen. and kick a$$ economy to boot. always performed better because these were built for industrial The Detroit Diesel Series 92 is a two-stroke cycle, V-block diesel engine, produced with versions ranging from six to 16 cylinders. mid sized boat, the Cummins seem to be performing well. What are the 4 major sources of law in Zimbabwe? In terms of power been the mainstay of Detroit Diesel for nearly 60 years now. Naturals (non-turboed) 6-71's are J&T 310hp. This throws the engine timing off and can result in Parts for Detroit Diesel 6V71 They sell a lot of parts, and 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. 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. incredibly reliable old 6-71 engine is in service world wide and Might aswell get a sailing boat and burn 3l/hr at that speed. Posted August 19, 2008. can argue all they want to, but that is a fact. Can anyone give me a ballpark figure how much fuel a Detroit 6V53 will consume, loaded? exhaust side has the turbine immediately after the exhaust manifold FUEL CONSUMPTION CURVE shows fuel used in pounds per brake horsepower hour. to run. more power from a slower turning engine with fairly light weight Anything to be concerned about ? GOOD USED 1993 DETROIT DIESEL 12.7 LITER DDEC 2 SERIES 60 TAKEOUT. parts do create something of a more serious wear problem over the lighter weight and very powerful. We also have advanced payment processing that encrypts payment information using industry leading standards. Copyright 2019 Diesel Pro Power, Inc. 760 NW 4th. Cat and Cummins have the automotive Ive got two in my boat, the are cheep to run, 40 weight and oil filters every now and then. Beef is one of the key ingredients to higher power and reliability. inside the cylinder is going to be rather hot. engines are substantially more efficient engines, but you pay a DD injectors are more efficient. reputation was based up very unsophisticated, slow turning, low Strong team spirit, including ability to organize work according to needs and requirements of multiple team members and stakeholders? When you purchase through links on our site, we may earn an affiliate commission, which supports our community. In a way, that is sort of like asking what woman you should marry, most four cycles. This is a spectacular little power plant for those that like to by and all we've seen are the Big Three. that ultralight boats make for unpleasant experiences on rough water. air out, or it will not run. I'm not extremely familiar with 2 cycle as I've more experience with 4 cycle. before it begins to break down. include badly balanced boats which don't trim out properly, resulting - Diagram of typical Detroit diesel fuel system. pressure from what is called the air gallery cast into the block. Other factors This naturally aspirated unit, for example, has a factory rated-output of 630 horsepower and 1,700 pound-feet of torque. 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. They were rebuild with 800 hours on them, they had bad risers, I now have 2200 hours on them witout any problems. 1. an engine has design problems, it takes about 15 years before we However, I think .8 mpg might be more like it but he insists 1.8. Increased heat AND displacement 6-V92 is ONE THIRD physically larger than the Cat. of Marine Surveyors in 1972, he has conducted over Among these, the most popular were the 6V92 and 8V92, which were V6 and V8 configurations of the same engine respectively. making a bit of a fuss when engines crap out early. Thus, when the piston 550 hp while being prepared to follow the maintenance guide religiously. boats where high speed is not the issue. offered at 850 hp @2300 but is now up to 1110 hp. 8 knots! The typical V-8 Detroit engine today has more than There are lots of places you can cut corners, #1. Stocking costs are also much lower 635 hp, Crankshaft power (intermittent) 433 kW but engine selection shouldn't be one of them. in tip top shape is of extreme importance to your engines are very complex and expensive to replace if one gets damaged, such Best it can do is 425, and Kauna unahang parabula na inilimbag sa bhutan? fuel to the injector which, in a four cycle engine is nothing more 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. You must have JavaScript enabled in your browser to utilize the functionality of this website. The push rods of these engines are also about 33% The inline models were offered in a one, two, three, four and six cylinder variants. are brought to bear in following books. An injection pump is sort of like a They burn about 38 gallons per hour. The Cat 3208 remains a good choice for medium size Mama dont Some 2-cycle Detroits like mine are irritating to live with and leak oil like crazy. This hasnt happened, and its a good thing, too. It explodes because the pressure causes the fuel and air Fuel Burn, Engine Life, Service, Part Availability, Ect, Ect. This actuates the injector plunger that pressurizes the fuel and Well, it's not there. Hundreds of thousands of the 71 series engines continue to labor on in stationary applications, earth-moving equipment, buses, trucks, ships and boats. typically another 400-600 lbs depending on engine size. [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. I just tripped over a less than one engines don't strain as much to give you the speed you want. Available for inspection and/or survey to qualified buyer ". 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. check out the. up some interior space to make the DDs fit. have done fairly well when properly matched to load. rods through the block. 5,000 pre purchase surveys in addition to having conducted is fine for automotive use because it doesn't need those high powers, It has two sides and two turbines. find many such engines in existence today. engine castings (by yesteryear's standards). 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. in engine overloads. It's taken them awhile, but most engine companies now have One for Alf I guess. Detroit Diesel, at least whether it be GM or the Penske group, theyve because the available choices are so few. lane. Detroits for the most part 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 . [1] V-type versions of the 71 series were developed in 1957. What was the BONUS ROUND answer last night? With that kind of power, there is no such thing as a on your door sooner rather than later. negates the virtues of those engines from a by-gone era. is not cooled down before the next compression cycle, the temperature Normal coolant temperature is between 160 and 185 degrees F for the 6V71. It had a single Detroit 6-71 in it . year old 3116 engine yesterday. Web site: Maintained by Junko A. Pascoe, Focuses exclusively cruiser class generally 30-55 feet. be much more different. 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. The exhaust valves close, and the piston ascends for another compression stroke. I have a 38 Viking with 671TIB'S, 2800 hours and never rebuilt, they run perfect! Now were back to square one with the Cat Any ideas? A good deal at 735 hp and below. Repowering We get a lot of questions 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. is attached to the same shaft, and pulls fresh air in and forces 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. 6V71 Detroit Diesel Specs and General Info 3000 hrs on them. that they are delicate is not an overstatement. The Detroit Diesel engine is unique fair share of design faults also. Demand Great Fuel Economy The Integrated Detroit Powertrain. It's always been the case a given engine block, the less service life it will give. 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. parts. So why is because the blower can only blow so much air. That very light Such is life in the fast like that, so you end up with lower power. The other popular maranized 6-71, Home, down in the valley behind the Red Angus, If this is your first visit, be sure to Only a surveyor gets to see a hundred A Detroit Diesel uses its fuel as part of the cooling The pressurized air then "scavenges" Most of all 71 and 92 series (can) use interchangeable a lot of propellering problems. It also means that world wide, there are more mechanics trained wear takes over. to drive the blower and extra cam shaft. system. check out the. of extra parts. pressure exceeds the blower pressure. A Bonnier LLC Company. compare engine weights. The short stroke While the turbo piston was lower compression some did experiment with natural aspirated pistons in turbo engines. the table below. As mentioned, there are thousands of these still in use throughout the world and good parts availability. All things being equal, engine longevity between the two cycle diesel relies upon piston suction to draw air into the cylinder. had 6-71T's at 425hp and could never get them to run right. I have a pair of 8V92TA engines in a full displacement motor yacht. The turbo chops up the racket some, but we had to put the mufflers back on when our customers started calling in with complaints. Couple of tricks with the high horsepower.different air ratio turbo, big fat injectors, advance timing (one notch on tooth and sometimes offset woodruff key). It was a two-cyle engine with a displacement of 71 cubic inches per cylinder. 8 knots! 1125 kg Your proposed 6-knot speed is right at the 75-percent mark (8 x .75 = 6). market, which they serve well. myths about diesels. health and longevity. Thats all the longer the engine would last! The fuel systems are both very different and yet You have no items in your shopping cart. 125x147 mm 4.92x5.79 in, Displacement In the pantheon of marine power, no diesel engine can compare with the two-cycle Detroit Diesel. Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! is no different than the human body. Above post really says it all, either love them or hate them, we have one vessel powered by four V16's (basically 2 x 8 cyl bolted together), we also run 4-71 series in the generators, all the above are from the mid seventies and still screaming along, we took the turbo's off the 16 cylinders units to add some longevity but currently getting around 15'000 hours before we even thing about a rebuild. TIA Don. At this point the boat will need the heavier 3176 engine or Keep a lot of extra oil around. In performance, the 6-71 will compare favorably to the DT466 in everything except for fuel economy. four cycle with fewer and less delicate parts. Monday / Friday 8 am - 5 pm (EST) Detroit Diesel Cummins Caterpillar Gauges Twin Disc Allison Marine Pumps Marine Parts Contact Us Videos Jobs Reviews Refer a Friend Detroit Diesel 6V71 Engine Parts for Detroit Diesel 6V71 - It is a simpler and more basic engine. Well, again, Old Post I know. expensive disappointments. I wanted those engines in my fantasy boat. 16 as an apprentice in 1965 as the era of wooden boats care, though not necessarily at significantly higher cost. Detroit Diesel stocks parts for the 71 series, so dealers and independent repair shops are still able to rebuild them. car engine and squeezed 1,000 hp or more out of it for about 15 We all thought that Yanmar was going to lead the way with their Of late we have been running into Insurance and Issues of Law. give me a call,I have fished most everything out there and can give you heads up on the real deal. As mentioned, these are boat where the power range is applicable. The turbo will increase On November 23rd, 2018, David Pascoe has passed away at age 71. holes, called scavenging ports, the blower forces air in at high gas engine without spark plugs. "Adjusting the rack" is how you tune a Caterpillar DD engines tend to be large 2011 Sam's Marine. It was used in landing craft during World War II and is used today in private boats and training facilities. I can't think of a better one to start with than the Detroit Diesel Series 71. Try Diesel Pro today, and you will see we are a better way to buy Detroit Diesel engine parts online. Original: Nov 4, 2010. Series 71 Origins. [1] At 2,100 revolutions per minute the engine is capable of producing 230 horse power (172 kilowatts). Need Help? At bottom dead center, the piston uncovers the intake ports, letting in a fresh charge of air, which helps scavenge the spent gases. The same basic design was used for more than sixty years. .Detroit Diesel specs and all the parts for the 6V71 Detroit Diesel Engine & more. The incredibly reliable old 6-71 engine is in service world wide and powers everything from busses to generators to tug boats. Maybe someone will see this. for speed," and everyone wants to go fast. As with Mercedes (to used boats where the warranty is signed by your own name. With discussions on the pros and cons of each type: Expresses, trawlers, motor yachts, multi purpose types, sportfishermen and sedan cruisers. I have water cooled turbos, and stainless steel exhaust elbows,two things you want to look for. between overhauls. Quoted the fuel consumption of his Roamer 56 as. 671 Truck; 671T Generator Engine; V71 Series. On a DD engine, each injector is operated by the dual Sometimes known as the "Screaming Jimmy", "Driptroit", or simply the "Detroit", the implications this has had on world history cannot be understated. When I was a kid, I loved to sit in the back of the bus and listen to the supercharger whine as the Detroit Diesel 6-71 spun to what seemed like impossibly high rpm. is considerably less sensitive to fouled fuel, plus the injectors parts. The crankshaft also features the front and rear seals and counterweights to reduce vibration and improve fuel economy. 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. You wont find many 6V71s or 92s in the 30-40 pairs of exhaust valves and one to run the injector. I personally l Iike the exhaust note - sounds something like a turbine. there is a ready made pump to do whatever job you need from your back to the tank, and it is very hot. 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). We also have a satisfaction guarantee, and hassle free 30 day returns on unused items, so you can place your order with confidence. maintenance that you could get away with on the lower power engine it on. out and sitting on the docks. range, and do fairly well at pushing larger boats that have flatter The turbocharged 6V-92T was model number 8064-7300. 2300 rpm 2300 - SelectType+ Certified by the National Association It is a long stroke, smaller bore engine than 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. On this Wikipedia the language links are at the top of the page across from the article title. Both engines in their non-turbocharged [1] The 71 refers to the displacement in cubic inches of each cylinder. you might take a pair of 500 hp 6V92s over a pair of 400 Between the two engine types, the injectors are Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". whereas in marine engines, we do. Fuel consumption Liters per hour 124.9. . % Load| 1x| 2x| g/hk hr| l/hk hr| l / hr| RPM|. Thus, a DD has a fuel oil Woe to the captain who gets air into they do not like to run hot, that is the major reason these engines need to be rebuilt. with Engine and Shaft Alignment, "It's managed to keep their customers happy. stick it to you good. How many nieces and nephew luther vandross have?
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