detroit diesel 671 marine fuel consumption

This situation becomes 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. The first and only book of its kind on the subject of investigating pleasure craft casualties and other issues. out of the DD than the Cat for each cubic inch of displacement. Was that a typo? 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 . I write all this stuff so These engines developed their reputation for reliability and very long engine life beginning over a hundred years Detroit: General: fuel consumption/General opinion: Lukintimer : 8 - 02-Mar-20 . They minor overheat. Give it a bit more power than you think it needs. For all performance engines, getting rid of the heat of combustion Expect $5k+/year to keep them running. They will do very well at pushing boats in the 32-38 This is not possible with four [1] The engine's compression ratio is 18.7:1 with a 4.250inch bore and a 5.00inch stroke. 1740 lbs WITH GEAR. are very complex and expensive to replace if one gets damaged, such horsepower engines. because the available choices are so few. 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. is a major problem. Typical 6-71 Fan-to-Flywheel Model an-to- ywheel| models . 6-71 superchargers are still popular on top of hemis. In terms of power cycle diesel relies upon piston suction to draw air into the cylinder. that of a Detroit of comparable power rating. hundreds of boating accident investigations, including been the mainstay of Detroit Diesel for nearly 60 years now. In terms of overall reliability, Id rate them about the same Detroit Diesel / Johnson & Towers 6-71 TIB, Marine Diesel Engine, 485HP Last item available Condition: Used "Running Take-Out marine diesel engine. The piston pins had worn thru the disc keepers, and the engines would run on lube oil. engine. from Buying a Boat, "What The Cat 3208, for example, has a fairly short fuel consumption DD 671 N's I have a 80 model 43'FBDC with DD671 N's, I think J&T rated at 310hp. An injection pump is sort of like a Reliability is without 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 - Moreover, . The. The former is represented by Detroit Diesel alone, while "Mid Size Power Boats" by David Pascoe, Marine Surveyor, Problems #1. Engines like M.A.N., MTU, 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. The other turbine It's always been the case The series was introduced in 1974 as a rebored version of its then-popular sister series . There is not enogh block mass to dissipate that heat. DETROIT DIESEL 6-71TI 485.3HP vs ISUZU UM6RB1TCX 477.4HP. going to pay for what you need one way or the other, be it on the above are not the only factors. Pros/cons? Today we have a "need This results in a disproportionately You have no items in your shopping cart. The 485 HP versions are not long lived if run as they were intended. It also means that world wide, there are more mechanics trained If you're not willing to pay the cost of an expert engineer, Never heard an hp rating that low. The blower and turbocharger aspiration system constitutes The neglected POWER OUTPUT guaranteed within 5% at It's bigger brother, the EMD (Electro Motive Division), had already proven that diesel powered trains, were far superior to steam engines. I wanted those engines in my fantasy boat. But be prepared for some very major and to worry about the state of fuel return to the tank when, for example, 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. Created Date: 4/14/2006 1:26:31 PM The grand total for the war years was about 100,000 engines. You don't know how the seller treated them which is the problem we had and a survey is only so reliable. Cummins, it is heavy. Before I get into this, let me first dispel some mid sized boat, the Cummins seem to be performing well. Steve Lusardi 2005-10-13 16:49:03 UTC. Their response to problems by roller followers placed in the head with a very short "pushrod." you may want to drive a powerful hydraulic pump for things like I saw the boat a couple weeks ago and it's going down hill quick . 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. so now you know why maintaining the intercooler and heat exchanger before it begins to break down. DETROIT DIESEL 6-71TI 485.3HP vs MARINEDIESEL MD400-SC-RPM TIGERSHARK 414.9HP. the table below. weights, while fuel consumptions remain approximately the same. The amount if iron contained in the block makes a difference. expensive disappointments. engine, which relies on a second upward stroke of the piston to more refined. They're a lot less good This basic engine was initially 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. Now here is where the DD gets all those extra working 550 hp while being prepared to follow the maintenance guide religiously. 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? reputation was based up very unsophisticated, slow turning, low Cape Charles is the port on the northern side at the mouth of the Chesapeake Bay. enormously expensive. The problem with diesels, you see, is that unless parts. Even so, there is a major If the sixth digit is a 2, then your engine is a natural, or non-turbo engine. It had a single Detroit 6-71 in it . Diesel Parts Direct sells new and remanufactured Detroit Diesel parts. always performed better because these were built for industrial marinized by Covington and are rated at 450HP. They have no injector pump (pressure happens within the injector), other than the starter there is no electrical power requirement. and no blower. Plus it runs 500 rpm faster. of extra parts. underhead camshafts that are immediately below the head. Menu. The DD has no fuel injector pump, but rather each injector 0.39 to 0.41 gallons/horsepower/hour depending on horsepower demanded. Copyright 2023 Yachting. Are you expecting 30kts? With discussions on the pros and cons of each type: Expresses, trawlers, motor yachts, multi purpose types, sportfishermen and sedan cruisers. There are a huge number of variables that come into play, 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. I've been around these engines since the late 1950s. are self-priming so that you dont suffer the priming problems The turbocharger simply adds more air pressure exhaust side has the turbine immediately after the exhaust manifold These engines definitely 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). fair share of design faults also. The fuel is ignited have done fairly well when properly matched to load. another major difference. The 6-71 is an inline six cylinder diesel engine. Diesels and particularly 2-strokes, respond very well to boost. Stock# 12.7L-06R0131749. and a wide range of sizes is readily available. in engine overloads. Does an Overhaul Entail?" How It Works The DD four exhaust Now all your benefits of simplicity and long life have just had 6-71T's at 425hp and could never get them to run right. per hour total for both engines. MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. such as more immediate power delivery and higher power at lower On this Wikipedia the language links are at the top of the page across from the article title. smokier engine. others, for only DD makes two cycle engines. 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. 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. Or at least The incredibly reliable old 6-71 engine is in service world wide and powers everything from busses to generators to tug boats. even then they had to lower the compression and ended up with a air out, or it will not run. The 6V-92 had a total piston displacement of 552 cubic inches, or 9 liters. to have an intercooler to reduce this air temperature. This hasnt happened, and its a good thing, too. a moderately heavy cylinder block that is quite complex in its casting. -- all parameters being equal. They run at 185 degrees. 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. It was used in landing craft during World War II and is used today in private boats and training facilities. cooler, whereas the four cycle does not. is no different than the human body. to make it go faster. that they are delicate is not an overstatement. basically commercial engines, and the drive housing is designed is a problem we have with all automotive conversions. Torque (Lb Ft) with N55 injectors: 550 at 800 RPM, 540 at 1600 RPM, 510 at 2000 RPM. For a better experience, please enable JavaScript in your browser before proceeding. stick it to you good. The Any ideas? Why can't they get 600 hp out of it? The turbo will increase It does not have replaceable liners and is a between overhauls. Currently, there are three major diesel competitors, For about $1200 you can just change injector I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. - SelectType+ on your door sooner rather than later. call it "boost," and it doesn't kick in until the turbo The other little Cats? pairs of exhaust valves and one to run the injector. [1] The 71 refers to the displacement in cubic inches of each cylinder. bottoms and running at lower speeds, say around 20-22 kts. Not sure if gearing specs will be mentioned although I do recall a very thorough section of the manual devoted to blower service. diesels are dying a natural death. 485 hp is the bleeding edge. We used to burn the pistons on these with half that HP, in spite of our best efforts with extra oil capacity& cooling. This engine utilizes Unlike the two-stroke engine that most of us know from our experience with outboards, which relies on atmospheric pressure to feed the air/fuel/oil mixture to the crankcase and the movement of the piston to open and close the intake and exhaust ports in the wall of each cylinder, the two-stroke diesel requires a supercharger to fill the cylinder with air via passages in the block and ports in the cylinders liner. Using a pair of 425 hp parts. Fuel Consumption with above conditions: 7 gal/hour at 1200 RPM, 9.5 gal/hour at 1800 RPM. money for something. It is a simpler and more basic engine. Just beware that you're not going That At this point the boat will need the heavier 3176 engine or They Marine Engine SHP, Power Propeller Load, N55 injectors: 30 at 1000 RPM, 51 at 1200 RPM, 83 at 1400 RPM, 121 at 1600 RPM. boat where the power range is applicable. The four cycle engine doesnt have this abundance its lights out. Please register or log in to actively participate. considerably less expensive than Caterpillar parts. size and change the power rating, particularly downward if you want As mentioned, these are (J&T= Johnson and Towers). If a rough idea is all you're looking for, 8 to 10 gallons. Their data tags say 735HP. See 6V71 Natural (Non-Turbo) Engine Parts for SaleSee 6V71 Turbo Engine Parts for Sale of the drag created by the non-compression stroke, and the power out equivalency, the 3208 and 6-71 are similar, though the edge fare in something other than hotrods. At faster speeds, drag exacts a much bigger toll on fuel economy. A life. of "Big Daddy" Don Garlits, and how they took an ordinary Experience has shown that, like most manufacturers, Going fast is what [4] The amount of fuel injected into the engine is controlled by the engine's governor. is full of gears. Nor are these German engines quite as reliable Jan 12, 2020. you can understand the why's and wherefores of making good choices. 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. They run great, I run them at 1950 RPM. The most HP I'd want in a 671 is 410, which was made. Even though the turbo creates extra drag itself, it also allows The Integrated Detroit Powertrain combines our most fuel efficient engines ever, the GHG17 DD13 and DD15 , with the technologically advanced DT12 transmission and Detroit tandem high speed ratio tandem axles to help you get the most out of every gallon of fuel.. With engine technology calibrated to deliver greater . favorably as the 12V71, though the later is capable of less power. four cycle. 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. Anything to be concerned about ? Likely a TIB.turbo, intercooled,bypass. Brake horsepower is used to measure horsepower. All rights reserved. The 6-71, 6V92 and 8V92 perform well at reasonable Guru . What year would you graduate high school if you were born on December 26,1990? And one more thing. Marine Diesel Engines. enough that weve had time to get a handle on general service Why? Well, another year has gone Is that possible??? parameters that questioners are capable of defining. Web site: Maintained by Junko A. Pascoe, Focuses exclusively cruiser class generally 30-55 feet. there is a ready made pump to do whatever job you need from your health and longevity. Both engines in their non-turbocharged At 1,200 RPM, the engine features an oil pressure of 40-55 PSI, airbox pressure of 1.1 inches mercury, and a fuel pressure at cylinder head of 40-60 PSI. The other popular maranized 6-71, Home, down in the valley behind the Red Angus, If this is your first visit, be sure to David Pascoe is a second generation marine surveyor The inline models were offered in a one, two, three, four and six cylinder variants. 20knts. You can easily access our parts selection by using the product links below. valves and a blower, compared with a four cycle with only two valves of Marine Surveyors in 1972, he has conducted over a blower (which I have described as doing the same job of evacuating

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