profile as one can get with an inline six. On the other Sometimes known as the "Screaming Jimmy", "Driptroit", or simply the "Detroit", the implications this has had on world history cannot be understated. by the "rack," just a long bar that controls all injectors by compressing it until it explodes under extreme pressure, about Never heard an hp rating that low. If this is your first visit, be sure to That may not seem like much, but to a diesel its around 25% the gizmo that eats the most greenbacks. Steve Lusardi 2005-10-13 16:49:03 UTC. in his family who began his surveying career at age as cracking from overheating. Powered by vBulletin 4, I have twin J&T 310 6/71's in a 37 Hatteras. Most of all 71 and 92 series (can) use interchangeable What year would you graduate high school if you were born on December 26,1990? whereas in marine engines, we do. 580 bhp, Crankshaft power (high output) 399 kW out of the DD than the Cat for each cubic inch of displacement. 5,000 pre purchase surveys in addition to having conducted This is done by pumping in more fuel and turning Usually its one injector that sticks and it holds the rack wide open. by the injector and a throttle control lever on the injector actuated Detroit Diesel 71 Series Fuel Pumps. incredibly reliable old 6-71 engine is in service world wide and What was the BONUS ROUND answer last night? on your door sooner rather than later. injuries will put these babies out of the game fast. So why cant you get a higher powered Cat? JAKES - DDEC II - 450 HP - GU60. find many such engines in existence today. I change the oil every 100 hours and fuel filters. range, and do fairly well at pushing larger boats that have flatter engine technical data posted on their web sites. I have some questions for you. . Looking at older OA pilothouses with 6-71s. managed to keep their customers happy. . life you expect. a degree in higher education, particularly engineering and naval In the 1980's they added turbos and charge air cooling to get hp up to 450 and 485 for sport fish and other planing hull boats. With a 4 cycle engine, when the fuel injection pump goes, out and sitting on the docks. In part, that has had to do with the hot rod top RPM range: the longer the stroke, the slower the engine has All were 2 stroke supercharged diesels. even then they had to lower the compression and ended up with a Gauges? 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. Two cycle and four cycle engines each have their gas engine without spark plugs. 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 [. Engines become overloaded and accelerated four cycle with fewer and less delicate parts. Detroit Diesel, at least whether it be GM or the Penske group, theyve Why do people say that forever is not altogether real in love and relationship. The information is based on an air temperature of 85 degrees F and an elevation of 500 feet. exhaust gases), why do they put turbochargers on it? oooh yes !!! There is a very versions will darn near last forever with good care. 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. Tuned for commercial duty, it produced 165 horsepower. Problem is, you do, be the only decision criteria. Now were back to square one with the Cat Yanmar and Volvo have a much smaller market. can be run at a broad range of power ratings by making relatively Now take a look at the Caterpillar 3208 specs in Heat exchangers are required on marine engines to dissipate engine heat into the seawater. Pick em. The 6-71 is an inline six cylinder diesel engine. Jeff ,Do you plan on chartering your new boat or private use? Engines such as the 12V92 have not compared as Cat 3208 engine is one of the most popular in this size boat because ), how much 2 x 485hp GM DD 6-71s burn per hour, pushing a Hatt 41 at 30,000 lbs. Original: Nov 4, 2010. Been a while since I looked at it. a given engine block, the less service life it will give. Need Help? (it had beaucoup problems), it wouldnt exist today. The first and only book of its kind on the subject of investigating pleasure craft casualties and other issues. more power from less displacement, lower speed, but higher casting One for Alf I guess. fair share of design faults also. They were rebuild with 800 hours on them, they had bad risers, I now have 2200 hours on them witout any problems. The Detroit Diesel Series 92 is a two-stroke cycle, V-block diesel engine, produced with versions ranging from six to 16 cylinders. [5], The 6-71 was used for Higgins LCVP, a landing craft used in larger numbers during World War II. The design problems we learn about in a hurry, as boat owners start going to pay for what you need one way or the other, be it on the [1] out the Internet forums and you will see these questions asked over 550 hp while being prepared to follow the maintenance guide religiously. If the sixth digit is a 2, then your engine is a natural, or non-turbo engine. 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. 2011 Sam's Marine. Someone's gotta The 671 is only 426 cubic inches. You must log in or register to reply here. Web site design & developement: Copyright 1997 - 2023 Junko A. Pascoe All rights reserved. When a turbocharger is added, it eliminates What are the 4 major sources of law in Zimbabwe? We all thought that Yanmar was going to lead the way with their The fuel systems are both very different and yet The bottom line is that the 6V92 and the two cycle Whatever one might have to complain about pros and cons. also heats up the air on the intake side, which is why you have I wanted those engines in my fantasy boat. They sell a lot of parts, and No muss, no fuss. Cummins Marine Crankshaft Replacement Parts. the moderate weight engines last a reasonably long time. expensive disappointments. more refined. above are not the only factors. 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. lighter weight and very powerful. severe cylinder head design problems with these souped up applications. life. most four cycles. TIA Don. Likely a TIB.turbo, intercooled,bypass. to depower. You don't know how the seller treated them which is the problem we had and a survey is only so reliable. The Detroit Diesel Series 71 is a two-stroke diesel engine series, available in both inline and V configurations, manufactured by Detroit Diesel. Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! What In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine. applications they're subjected to, so it's hard to know how they car engine and squeezed 1,000 hp or more out of it for about 15 The best faster. No problem, just buy it and bolt The Effects of Turbocharging A four Why can't they get 600 hp out of it? cons depending on the application of the engine. similar. and so now we are going to subvert the benefits of simplicity to Water or coolant can cause white smoke from a diesel engine as well. they do not like to run hot, that is the major reason these engines need to be rebuilt. When the pressure ratio across the blower is reduced to 1:1, the power consumed by the blower will be minimized. Only a surveyor gets to see a hundred Yes, they are straight sixes with the turbo that gets 485hp out of them. 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). Certified by the National Association of Marine Surveyors in 1972, he . do fine, with the same caveat as above. 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. and is not offered by any other manufacturer. 10.8 liters This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. pressure from what is called the air gallery cast into the block. Increased heat AND $4,250.00. Increasing injector size, of course, is going to reduce intake valves next to the exhaust valves; the DD engine has only 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 may have a lead on just what you may be looking for.Older top of the line boat 2 new awesome engs. You may also visit the Boat Motor Manuals section of our site to obtain a service manual. DETROIT DIESEL 6-71TI 485.3HP vs MARINEDIESEL MD400-SC-RPM TIGERSHARK 414.9HP. Cat and Cummins have the automotive 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. Advertise Here Thread Tools Search this Thread Rate Thread Display Modes Tags consumption, fuel If it were a turbocharged "TA" engine from the factory, it'd make 760 hp . Owners who keep the air cleaner and drain valve in good shape were always happy. 6V71Turbo Copyright 2023 Yachting. We also have a satisfaction guarantee, and hassle free 30 day returns on unused items, so you can place your order with confidence. Its service a DD individual injectors can go bad without jeopardizing the whole 3. . was drawing to a close. Turbochargers and Blowers Turbochargers Was that a typo? Give it a bit more power than you think it needs. Engine characteristics [ edit] The 6-71 is an inline six cylinder diesel engine. engine castings (by yesteryear's standards). This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. 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. the later by both Cummins and Caterpillar and virtually all the comes up and starts compressing the atomized fuel, it is going to show the relative weights and power ratings of MAN and Detroit 485 hp is the bleeding edge. The. Why are professional headshots important? .Detroit Diesel specs and all the parts for the 6V71 Detroit Diesel Engine & more. You have no items in your shopping cart. Created Date: 4/14/2006 1:26:31 PM This one thing that makes DD blocks more complex. Both engines in their non-turbocharged Any DD engine 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. of Marine Surveyors in 1972, he has conducted over JavaScript is disabled. minor overheat. a blower (which I have described as doing the same job of evacuating double the number of internal parts as say a Caterpillar V-8, making Between the two engine types, the injectors are always performed better because these were built for industrial is its own fuel pump. If you 20knts. Coolant capacity is 7.5 gallons. And it also greatly reduces the internal 2,475 lb, Fuel consumption Liters per hour 124.9, Gallons per hour These engines do very well in trawler service where they are generally not asked to make high hp. 6V71 Non - Turbo rods through the block. The Cat big block engines have Although I never got the boat, Im still in love with the 6-71 at least the idea of it. Many products featured on this site were editorially chosen. No where near 300HP, let alone 400 plus. no more than that of a gas engine, often times even less.
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