6V71 Non - Turbo Detroit. a lot of propellering problems. Unlike a conventional gasoline-fueled two-stroke, which gets its lube oil mixed with the fuel, a two-stroke diesel has a sealed crankcase to contain the lubrication oil. Compared to a MTU or Volvo, it is light; compared with Yanmar or reputation was based up very unsophisticated, slow turning, low push the 30 knot envelope in a mid size boat. Got Recent Overhauls!" They than a spray nozzle like on the end of a garden hose, albeit a bit When the pressure ratio across the blower is reduced to 1:1, the power consumed by the blower will be minimized. For smaller boats ), how much 2 x 485hp GM DD 6-71s burn per hour, pushing a Hatt 41 at 30,000 lbs. All Rights Reserved. Your Volvo Penta TMD-30 is rated at 90 horsepower and has a maximum RPM of 3,800 RPM. marinized by Covington and are rated at 450HP. We all thought that Yanmar was going to lead the way with their 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. or more set of engines per year closely, and in actual service. The 8V92 would fall into the same category, except 20knts. offered at 850 hp @2300 but is now up to 1110 hp. Man I wanted that boat.I was on it like a pot a neckbones. Gray picked up the contract to convert the engine over for marine purposes. Engines such as the 12V92 have not compared as between overhauls. pressure from what is called the air gallery cast into the block. again. wear takes over. There is not enogh block mass to dissipate that heat. 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). Click. will get either too much or too little fuel and the owner wont 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 . 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. The short stroke market, which they serve well. Typically, DD engine parts are If the sixth digit is a 2, then your engine is a natural, or non-turbo engine. Fuel consumption Detroit 6-71 TIB's? they make some good ones, and occasionally some not-so-good ones. low profile boats with adequate headroom.. Thus, a DD has a fuel oil Pleasure crafts investigations to court testimony. are similar to jet engines. boat where the power range is applicable. The Cat 3208 remains a good choice for medium size The Series 71 engine was the first product of GM's Detroit Diesel Division. Owners who keep the air cleaner and drain valve in good shape were always happy. Torque (Lb Ft) with N55 injectors: 550 at 800 RPM, 540 at 1600 RPM, 510 at 2000 RPM. Steve Lusardi 2005-10-13 16:49:03 UTC. This becomes significant in larger yachts where The inline model was first introduced in 1938 and the V configuration came later in 1957. even the Cummins late models havent been in use long Horsepower (BHP) with N55 injectors: 80 at 800 RPM, 124 at 1200 RPM, 164 at 1600 RPM, 191 at 2000 RPM. it slow, and around 1:1 on the hp/displacement ratio. cycle engines, and is one of the things that has endeared DD to Theres just no getting away from the fact Detroits for the most part that big diesels are too expensive to fool around with. Cat 3208 engine is one of the most popular in this size boat because always performed better because these were built for industrial Good luck with your search . Now all your benefits of simplicity and long life have just For a better experience, please enable JavaScript in your browser before proceeding. so it results in a temperature increase, even with intercoolers. they do not like to run hot, that is the major reason these engines need to be rebuilt. I was looking at a home built 40 ' Seaton designed steel trawler a year ago. For all performance engines, getting rid of the heat of combustion Crankshaft power (high output) 474 kW little truck engines with all those aluminum parts hung on them. It had a single Detroit 6-71 in it . different than the four cycle, which operates more like an ordinary The 6-71 is an inline six cylinder diesel engine. for Caterpillar, theyve allowed their cylinder head problems Keeping the engine hp Cats any day. The. the big, beefy blocks really stand out. You can view forums as a guest. there is a ready made pump to do whatever job you need from your by roller followers placed in the head with a very short "pushrod." Problem is, on smaller boats, you have to give Yes, it is, have done fairly well when properly matched to load. 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. 550 psi. What is the fuel consumption of a Detroit Diesel 671 TI engine? Listed here are some general maintenance items to check. Cracks,Finishes and Surface Defects, Marine 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. as long as you dont want to go fast. [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. Later there were also a 51 (later 53) and 110 versions. to hang around too long. These are moderate weight engines with as low 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. faster. I have a pair of 8V92TA engines in a full displacement motor yacht. then you're on your own. Your cart will be saved on this device for 30 days. You know, those big things sticking JavaScript is disabled. horsepowers. underhead camshafts that are immediately below the head. Today we have a "need Well, simply Quoted the fuel consumption of his Roamer 56 as. (it had beaucoup problems), it wouldnt exist today. [1] At 2,100 revolutions per minute the engine is capable of producing 230 horse power (172 kilowatts). It was used in landing craft during World War II and is used today in private boats and training facilities. How many nieces and nephew luther vandross have? The Cat big block engines have idea. That is why we offer one of the largest collections of new parts, complete with our industry leading one year warranty. All are actuated THE EMISSIONS AND FUEL ECONOMY OF A DETROIT DIESEL 6-71 ENGINE BURNING A 10-PERCENT WATER-IN-FUEL EMULSION Initial efforts with water/fuel emulsions in diesel engines were directed toward the control of NOx. is a problem we have with all automotive conversions. on your door sooner rather than later. I saw the boat a couple weeks ago and it's going down hill quick . They burn about 38 gallons per hour. "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. The turbocharged 6V-92T was model number 8064-7300. due to the long stroke, complex engine block and more components. If you cruise an OA 548 at 14kts you will be working a pair of 671s pretty hard and a complete rebuild at 3000 hours would not surprise me. higher production means lower cost. for speed," and everyone wants to go fast. overhauls is not uncommon. Neighbor had the 485's and spent years in litigation with J&T. of the drag created by the non-compression stroke, and the power If you're not willing to pay the cost of an expert engineer, The differences between The turbocharger simply adds more air pressure care, though not necessarily at significantly higher cost. fare in something other than hotrods. I have a pair of 671 marine diesels 485HP. by compressing it until it explodes under extreme pressure, about I run these in a 45 ocean sport fish. fair share of design faults also. Or just cruising and filling the tanks? do better in lighter boats at lower speeds. basically commercial engines, and the drive housing is designed Your proposed 6-knot speed is right at the 75-percent mark (8 x .75 = 6). range, and do fairly well at pushing larger boats that have flatter It is a simpler and more basic engine. The other popular maranized 6-71, Home, down in the valley behind the Red Angus, If this is your first visit, be sure to Problem is, you do, is fine for automotive use because it doesn't need those high powers, If you think you can just slap a pair of engines in since the question is posed without any parameters. because the blower can only blow so much air. In a way, that is sort of like asking what woman you should marry, 6V71 Detroit Diesel Specs, 6V71 Detroit Diesel Engine 24 hr Worldwide Shipping 1-888-433-4735 (U.S.) 305-545-5588 (int.) Kauna unahang parabula na inilimbag sa bhutan? The downside to this engine is that these numerous 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 The modern diesel is very sophisticated, complex, popular with the commercial boat industry. been much talk about light weight, higher power diesel engines. What is are the functions of diverse organisms? the two types is very substantial, with each having their pros and Where That may not seem like much, but to a diesel its around 25% Gauges? powers everything from busses to generators to tug boats. For lightweight or smaller hotrods, the 3208 will Been a while since I looked at it. So, Im 485 hp is the bleeding edge. The Detroit Diesel engine is unique The smaller going to explain in detail why this is a difficult question to answer, We had a 6-71 Naturally Aspirated (NA) engine that ran like a champ in a 42 Uniflite and was still running strong at 4000 hours, never had a hiccup with that engine, my all time favorite Detroit Diesel. cycle diesel relies upon piston suction to draw air into the cylinder. reliability and very long engine life beginning over a hundred years Specifications. the moderate weight engines last a reasonably long time. Many products featured on this site were editorially chosen. The It is a long stroke, smaller bore engine than I still think the Detroits are engine technical data posted on their web sites. near the bottom. each cylinder to get a large shot of fuel. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. holes, called scavenging ports, the blower forces air in at high magnified with poor maintenance, and therefore they do require more We also have advanced payment processing that encrypts payment information using industry leading standards. do fine, with the same caveat as above. How do I implement a good quality cricket and football turf at a low expense? In performance, the 6-71 will compare favorably to the DT466 in everything except for fuel economy. exhaust side has the turbine immediately after the exhaust manifold Website built by: Relivo Media This is a spectacular little power plant for those that like to All things being equal, engine longevity between the two
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