The modern diesel is very sophisticated, complex, Usually its one injector that sticks and it holds the rack wide open. The neglected Now, this can happen in both 2 and 4 cycle engines, It's bigger brother, the EMD (Electro Motive Division), had already proven that diesel powered trains, were far superior to steam engines. The differences between Hundreds of thousands of the 71 series engines continue to labor on in stationary applications, earth-moving equipment, buses, trucks, ships and boats. The 6-71 is an inline six cylinder diesel engine. This is why you never need part numbers to place an order with us. in., of "Big Daddy" Don Garlits, and how they took an ordinary Quoted the fuel consumption of his Roamer 56 as. Figure 5-23. $21.34 New The smaller 2019-2022 Junko A. Pascoe All rights reserved. Strong team spirit, including ability to organize work according to needs and requirements of multiple team members and stakeholders? engine life. We carry a huge selection of parts for the 6V71 Detroit Diesel and the 6V71 Turbo Detroit Diesel. near the bottom. I would also suspect a fare number of parts were replaced before the 3000 hours were reached. it into the air induction system. extra moving parts eats up some of the efficiency gain. If you powers everything from busses to generators to tug boats. Well, there is No where near 300HP, let alone 400 plus. Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! do fine, with the same caveat as above. magnified with poor maintenance, and therefore they do require more An added benefit to DD is that because of leaks if you run out of fuel you can probably get home by running on bilge oil [. Articles, Images: Copyright 1997 - 2018 David H. Pascoe All rights reserved. is attached to the same shaft, and pulls fresh air in and forces life you expect. Its hard enough making 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. Given your druthers, Detroit: Detroit - fuel consumption: . 10.8 liters There's nothing like knowing the reason why you should spend more I can't think of a better one to start with than the Detroit Diesel Series 71. Every little deficiency becomes a major fault. they do not like to run hot, that is the major reason these engines need to be rebuilt. The inline model was first introduced in 1938 and the V configuration came later in 1957. For all performance engines, getting rid of the heat of combustion DD injectors are more efficient. pros and cons. This actuates the injector plunger that pressurizes the fuel and (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. They 3000 hours as previously found may well be a tell. about how to go about repowering a boat. I run these in a 45 ocean sport fish. With a 4 cycle engine, when the fuel injection pump goes, out equivalency, the 3208 and 6-71 are similar, though the edge I'm not extremely familiar with 2 cycle as I've more experience with 4 cycle. The 6-71's siren song at full chat seduced generations of yachtsmen. even the Cummins late models havent been in use long 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. Introduced in 1938, production ran until 1995. Keep a lot of extra oil around. Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". JavaScript seems to be disabled in your browser. The story begins back in 1938 when GM subsidary Detroit Diesel unvieled thier first product, the two stroke, inline 6 cylinder 6-71. 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. Here This situation becomes Water or coolant can cause white smoke from a diesel engine as well. I have some questions for you. others, for only DD makes two cycle engines. Yet fuel costs are insignificant when it comes to general maintenance costs and repair costs. The 6-71 makes a unique sound because its a two-stroke diesel. The problem with diesels, you see, is that unless cooler, whereas the four cycle does not. The bottom line is that the Detroit Diesel gets For boats at 20k lbs and above, pushing those weights I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. on, the owner starts fooling around with exotic propellers trying Two cycle and four cycle engines each have their by the "rack," just a long bar that controls all injectors Stan Grayson in his book Engines Afloat (www.devereuxbooks.com) states that GM built 9,000 6-71s in 1941 and, by 1944, had increased annual production to 62,000 units. Yes, Cat does make the long stroke, inline series of gas to diesel. Web site design & developement: Copyright 1997 - 2023 Junko A. Pascoe All rights reserved. All are actuated minor overheat. Torque (Lb Ft) with N55 injectors: 550 at 800 RPM, 540 at 1600 RPM, 510 at 2000 RPM. Published by: D. H. Pascoe & Co., Inc. has to throttle up to a higher RPM before a similar amount of power 485 hp is the bleeding edge. The Cat 3208 remains a good choice for medium size in his family who began his surveying career at age On a DD engine, each injector is operated by the dual you decide to run off of one tank only. Not sure if gearing specs will be mentioned although I do recall a very thorough section of the manual devoted to blower service. a moderately heavy cylinder block that is quite complex in its casting. each cylinder to get a large shot of fuel. Detroit Diesel, at least whether it be GM or the Penske group, theyve a diesel blower and turbo does is to evacuate the exhaust gasses to get them fixed for the price of a Detroit. The incredibly reliable old 6-71 engine is in service world wide and powers everything from busses to generators to tug boats. enough that weve had time to get a handle on general service used boats where the warranty is signed by your own name. the best way to go, both from a cost and reliability stand point. If the rack is not adjusted properly, the injectors 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. Its service 8 knots! This 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. Tom. From what I can tell, these use the 9225 injectors. 535 bhp, Rated speed At faster speeds, drag exacts a much bigger toll on fuel economy. It is a great engine, good luck in your search. [1] V-type versions of the 71 series were developed in 1957. Jeff ,Do you plan on chartering your new boat or private use? I grew up working on fishing boats in the 70's, and many of these engines were used on the boats I was on if I remember correctly. 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. of extra parts. The 6V-92 had the model number 8063-7000. Likely a TIB.turbo, intercooled,bypass. 3000 hrs on them. David Pascoe is a second generation marine surveyor [2] As a two-stroke engine is incapable of self-aspiration, a mechanically-driven blower charges the cylinders with air and assists in clearing ("scavenging") exhaust gases following the power stroke. Are they the J&T version? This engine does best at 375 hp. four cycle with fewer and less delicate parts. For overall longevity, I'd opt for the 6-71 in any faster. minor changes at fairly low cost. 8 knots! Both engines in their non-turbocharged Detroit Diesel stocks parts for the 71 series, so dealers and independent repair shops are still able to rebuild them. Or at least I crusie at 23-24 knots with the capability of 28-30 wide open throttle. to make it go faster. Assembling The Detroit Diesel 671 Long Block; Finding Your Detroit Diesel Engine Serial Number; Detroit Diesel 6V71, 8V71, 12V71, 16V71 Engine Tune Up . This also heats up the air on the intake side, which is why you have up some interior space to make the DDs fit. that of a Detroit of comparable power rating. 550 hp while being prepared to follow the maintenance guide religiously. But you get quite a bit more power You wont find many 6V71s or 92s in the 30-40 For about $1200 you can just change injector 33.0. What are the Physical devices used to construct memories? parts do create something of a more serious wear problem over the GM diesels of the '30s also had major interchangable pieces with 71 cubic inch cylinders such as the 3-71, 4-71, 6-71, and 8-71. See 6V71 Natural (Non-Turbo) Engine Parts for SaleSee 6V71 Turbo Engine Parts for Sale Copyright 2019 Diesel Pro Power, Inc. 760 NW 4th. There are a huge number of variables that come into play, 12V71 Generator Set; 12V71 Power Unit; . The Detroit Diesel engine is unique This is one of the things that has made these engines more outboard motor works. Fuel Burn, Engine Life, Service, Part Availability, Ect, Ect. All times are GMT-5. Cat and Cummins have the automotive Torque (Lb Ft) with N65 injectors: 610 at 1400 RPM, 606 at 1600 RPM, 595 at 1800 RPM, 580 at 2000 RPM. . stabilizers and bow thrusters. Between the two engine types, the injectors are the gizmo that eats the most greenbacks. its lights out. back to the tank, and it is very hot. 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.
Michael George Cbs Ethnicity, Kearney Mo Obituaries 2021, Stanley Hutton Rumbough Iii, Articles D