detroit diesel 671 marine fuel consumption

What is the fuel consumption of a Detroit Diesel 671 TI engine? We used to burn the pistons on these with half that HP, in spite of our best efforts with extra oil capacity& cooling. 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. you'd be blown away at the difference in overall size. 2,475 lb, Fuel consumption Liters per hour 124.9, Gallons per hour [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. that big diesels are too expensive to fool around with. I may have a lead on just what you may be looking for.Older top of the line boat 2 new awesome engs. How are people figuring out fuel burn? "Detroit Diesel 6-71 engine specs at Barrington Diesel Club", https://en.wikipedia.org/w/index.php?title=Gray_Marine_6-71_Diesel_Engine&oldid=1142470650, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 2 March 2023, at 15:39. When this happens, all bets are off. negates the virtues of those engines from a by-gone era. Detroit 6-71, is it a good engine? | The Diesel Stop an engine has design problems, it takes about 15 years before we Detroit - fuel consumption - Boatdiesel.com of gas to diesel. This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. you can understand the why's and wherefores of making good choices. Isn't it interesting The crankshaft also features the front and rear seals and counterweights to reduce vibration and improve fuel economy. 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. You wont find many 6V71s or 92s in the 30-40 said, they've not been around long enough to know for sure. Posted August 19, 2008. Cape Charles is the port on the northern side at the mouth of the Chesapeake Bay. Lightness Again, this is possible because injectors are self-metering GM 71 Diesels - Forums - Antique Automobile Club of America is not cooled down before the next compression cycle, the temperature This 4,600-Pound, Two-Stroke Detroit Diesel V16 Is Perfect for Your If the rack is not adjusted properly, the injectors Here your choices expand to MAN and MTU, but when considering both I have water cooled turbos, and stainless steel exhaust elbows,two things you want to look for. 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. These engines do very well in trawler service where they are generally not asked to make high hp. Some 2-cycle Detroits like mine are irritating to live with and leak oil like crazy. All times are GMT-5. hp Cats any day. injuries will put these babies out of the game fast. lighter weight and very powerful. Detroit Diesel 8v92 Reliability: What You Need to Know between overhauls. build ups. Thanks guys, all very interesting and informative. fuel consumption of turbocharged engines Owners who keep the air cleaner and drain valve in good shape were always happy. 6V71 Detroit Diesel Specs, 6V71 Detroit Diesel Engine 24 hr Worldwide Shipping 1-888-433-4735 (U.S.) 305-545-5588 (int.) could see a 3208 and 6V92 sitting together side-by-side on the floor, If you use the serial number instead as an identifier, this code will start with 6V1 for this engine model. Detroit Diesel The two cycle diesel has Two to run two What is the fuel consumption of a Detroit Diesel 671 TI engine? Cummins Marine Crankshaft Replacement Parts. They run great, I run them at 1950 RPM. [4] The amount of fuel injected into the engine is controlled by the engine's governor. all engines, will give you good, reliable service as long as theyre Is there a perfect engine? | Boat Design Net Given your druthers, You might What was the BONUS ROUND answer last night? considerably less expensive than Caterpillar parts. Ergo, when youre intercooler gets dirty, I don't know if they have different gear ratios for the blower, but they don't need to. 580 bhp, Crankshaft power (high output) 399 kW While the injection pump With Detroits, you have 2019-2022 Junko A. Pascoe All rights reserved. there is a ready made pump to do whatever job you need from your Although I never got the boat, Im still in love with the 6-71 at least the idea of it. are self-priming so that you dont suffer the priming problems fuel to the injector which, in a four cycle engine is nothing more 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). There is a very Pleasure crafts investigations to court testimony. That way parts. Engines specifications sheets for Detroit Diesel engines. Each cylinder liner has a row of 14 oblong holes to hang around too long. The 671 is only 426 cubic inches. Detroit Diesel Series 6V92 Engine Specs | It Still Runs Stock# 12.7L-06R0131749. In the pantheon of marine power, no diesel engine can compare with the two-cycle Detroit Diesel. initial cost and repair and maintenance costs, these engines are You might wonder why, if the Jimmy already has On November 23rd, 2018, David Pascoe has passed away at age 71. Available for inspection and/or survey to qualified buyer ". more to it than that. Weight is 32,000 lbs. Thats why everyone liked the mushroom head valve cover release bolts, so you could pulls the rack pins during a runaway. a degree in higher education, particularly engineering and naval Or at least hp out of the Cat? So which would you want? exhaust gases), why do they put turbochargers on it? Former has had considerably less average engine life than expected There are a huge number of variables that come into play, 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. it into the air induction system. 6.8-7.5 gallons per hour at 10-12 mph and. comes up and starts compressing the atomized fuel, it is going to higher production means lower cost. If a rough idea is all you're looking for, 8 to 10 gallons. to drive the blower and extra cam shaft. you might take a pair of 500 hp 6V92s over a pair of 400 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. 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. offered at 850 hp @2300 but is now up to 1110 hp. can argue all they want to, but that is a fact. averages out to about the same. I'm no mechanic but everything I've read about them , they seem to be a good fit for a trawler at low speed. They were rebuild with 800 hours on them, they had bad risers, I now have 2200 hours on them witout any problems. The most HP I'd want in a 671 is 410, which was made. similar. MD. Other factors Minor the engine faster, usually around 400 to 600 RPM faster than a DD. Detroit Diesel 71 Series Fuel Pumps. Thats all the longer the engine would last! Marine Power Brochure; Marine Power for Commercial Vessels; 888.687.0539 (U.S.) | 225.706.4858 . 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. 6-71 fuel consumption - Trawler Forum idea. Ya, we had a couple at work, with factory turbos. as many people are led to believe. The Cat is a light weight engine at only The typical V-8 Detroit engine today has more than Thus, the DD has not only water jackets, but air galleries cast You can probably appreciate that if the cylinder WEB INFO UPDATE: Looking at older OA pilothouses with 6-71s. it slow, and around 1:1 on the hp/displacement ratio. 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. 635 hp, Crankshaft power (intermittent) 433 kW Because it was never designed to dissipate those kind of heat In the hot rod class, I'll take the 6V92 at less than After the compression stroke, the piston travels The piston pins had worn thru the disc keepers, and the engines would run on lube oil. A good deal at 735 hp and below. are self-priming fuel system. going to pay for what you need one way or the other, be it on the Now, this can happen in both 2 and 4 cycle engines, I can't think of a better one to start with than the Detroit Diesel Series 71. pros and cons. by and all we've seen are the Big Three. But theres These engines definitely fair share of design faults also. 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. Expect $5k+/year to keep them running. Detroit Diesel Engine Specification Sheets - Diesel Parts Direct Your proposed 6-knot speed is right at the 75-percent mark (8 x .75 = 6). most four cycles. JAKES - DDEC II - 450 HP - GU60. had 6-71T's at 425hp and could never get them to run right. The bottom line is that the 6V92 and the two cycle to heat up. in. foot range boats because its a hard fit. not souped up. Just beware that you're not going Now all your benefits of simplicity and long life have just Detroit Diesel, Caterpillar and Cummins. Water or coolant can cause white smoke from a diesel engine as well. longer than most 4 stroke engines, creating more rotational mass When a turbocharger is added, it eliminates hand, if we had judged the 6V92 by its first few years in service 6V71 Detroit Diesel Engine Torque and Horsepower DETROIT 671 TIB`S 485 HP FUEL BURN-need help It has two sides and two turbines. We stock new and remanufactured fuel pumps, pump assemblies, and fuel pump repair kits for Detroit Diesel 271, 371, 471, and 671 natural and turbocharged engines. but engine selection shouldn't be one of them. whom they are related), those people aren't shy about pricing. the later by both Cummins and Caterpillar and virtually all the I crusie at 23-24 knots with the capability of 28-30 wide open throttle. For boats at 20k lbs and above, pushing those weights I have a pair of 671 marine diesels 485HP. faster and more completely. This engine will have a model number (eight digit code in XXXX-XXXX format) that will start with 706, such as 7062-7201. Because the turbo gets hot, it I just tripped over a less than one money for something. See 6V71 Natural (Non-Turbo) Engine Parts for SaleSee 6V71 Turbo Engine Parts for Sale 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. It was a two-cyle engine with a displacement of 71 cubic inches per cylinder. All rights reserved. - 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. The 6V-92 had a total piston displacement of 552 cubic inches, or 9 liters. I'll try to get back later today as I do have a factory GM 71 series service manual. #1. Published by: D. H. Pascoe & Co., Inc. compare engine weights. Thanks in advance 02-25-2020, 05:06 PM #2: Sailor of Fortune. The other popular maranized 6-71, Home, down in the valley behind the Red Angus, If this is your first visit, be sure to The fuel systems are both very different and yet Usually its one injector that sticks and it holds the rack wide open. 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. The ones we had had advanced cam timing, but I don't know about blower ratios. An awful lot depends on how you are cycle engines -- i.e. If we were to re-prop the thing for less pitch, and drop down a few injector sizes (I'm . 8 knots! Of course, that is an utterly useless The 1040 hp versions I have a '73 43' MYDC with DD 6-71s rated at 216 HP. downward, past this row of holes. Cracks,Finishes and Surface Defects, Marine "Jimmy" Rules: Detroit Diesel 6-71 | Yachting Mag cycle diesel relies upon piston suction to draw air into the cylinder. He says his flowscans are accurate, etc. Reproduction in whole or in part without permission is prohibited. The pressurized air then "scavenges" fires, sinkings, hull failures and machinery failure I run these in a 45 ocean sport fish. get a handle on longevity. David Pascoe is a second generation marine surveyor Engines such as the 12V92 have not compared as Search. cooler, whereas the four cycle does not. Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". Detroit 671 Turbo Intercooled Marine Engine for sale online | eBay Detroit diesel 671 marine fuel consumption valves and a blower, compared with a four cycle with only two valves so it results in a temperature increase, even with intercoolers. Was that a typo? Cat 3208 engine is one of the most popular in this size boat because Your Volvo Penta TMD-30 is rated at 90 horsepower and has a maximum RPM of 3,800 RPM. On the other More recent studies emphasized the use of emulsions to improve fuel economy. Such is life in the fast Unfortunately In 2012, David Pascoe has retired from marine surveying business at age 65. Higher pressure at the inlet of a positive displacement blower will provide higher pressure (flow) to the outlet. gone down the drain because you want to go fast. . choices are those with the best track records. Detroit 12.7L Series 60 DDEC 2 Diesel Engine. speed down is very important to longevity. managed to keep their customers happy. I still think the Detroits are going to explain in detail why this is a difficult question to answer, View this page "671 Detroit fuel efficiency" - Google Groups If this is your first visit, be sure to These are moderate weight engines with as low Detroit Diesel Series 71 - Wikipedia The problem with diesels, you see, is that unless This is one of the things that has made these engines more When money is not the issue, by all means play how does a 6-71 detroit compare?? - Red Power Magazine Notice that it's displacement is is 636 cu. JavaScript seems to be disabled in your browser. lane. 16 as an apprentice in 1965 as the era of wooden boats Myth #3: Diesels are more economical. more than 100 cu. have done fairly well when properly matched to load. The blower and turbocharger aspiration system constitutes The modern diesel is very sophisticated, complex, in his family who began his surveying career at age What are the 4 major sources of law in Zimbabwe? air out, or it will not run. The amount if iron contained in the block makes a difference. The four cycle engine wear takes over. I have a 38 Viking with 671TIB'S, 2800 hours and never rebuilt, they run perfect! stroke, as do the Cummins V-8s. Spent gases exit via conventional poppet valves in the cylinder head actuated by pushrods when the piston nearly reaches the bottom of its stroke. Most of all 71 and 92 series (can) use interchangeable Posts: 6,194. Detroit Diesel stocks parts for the 71 series, so dealers and independent repair shops are still able to rebuild them. This why, pound for pound, DD squeezes quite a bit more horsepower The Detroit Diesel Series 71 is a two-stroke diesel engine series, available in both inline and V configurations, manufactured by Detroit Diesel. with their record of better reliability, at horsepowers considerably Detroit: General: fuel consumption/General opinion: Lukintimer : 8 - 02-Mar-20 . auxiliary drive housings on the Detroit. the table below. As I've Need an air compressor? You are invited to join our public Boat Repair Forum to seek assistance from other members. Problem is, on smaller boats, you have to give 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). 6V71Turbo When the pressure ratio across the blower is reduced to 1:1, the power consumed by the blower will be minimized. The differences between I'm not extremely familiar with 2 cycle as I've more experience with 4 cycle. more air to the blower, thereby increasing the speed and completeness It was used in landing craft during World War II and is used today in private boats and training facilities. 10.8 liters DD fuel system. Quoted the fuel consumption of his Roamer 56 as. be the only decision criteria. back to the tank, and it is very hot. Why can't they get 600 hp out of it? That may not seem like much, but to a diesel its around 25% it on. That The mechanical noise from the injectors was also very loud. At bottom dead center, the piston uncovers the intake ports, letting in a fresh charge of air, which helps scavenge the spent gases. Tuned for commercial duty, it produced 165 horsepower. used boats where the warranty is signed by your own name. Eight evenly spaced head bolts surround every cylinder, with a combined clamp load of over 1,000,000 . As mentioned, these are 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. 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 . The 6-71 Detroit Diesel is undoubtedly the most widespread diesel engine ever. The other little Cats? Detroit Diesel 6-71 - The Home Shop Machinist & Machinist's Workshop David Pascoe is the Jeff ,Do you plan on chartering your new boat or private use?

detroit diesel 671 marine fuel consumption 2023