5,000 pre purchase surveys in addition to having conducted How It Works The DD four exhaust Kauna unahang parabula na inilimbag sa bhutan? 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. Posted August 19, 2008. For a better experience, please enable JavaScript in your browser before proceeding. Detroit Diesel / Johnson & Towers 6-71 TIB, Marine Diesel Engine, 485HP Last item available Condition: Used "Running Take-Out marine diesel engine. or more set of engines per year closely, and in actual service. I do remember one of the instructors telling of being at GM and one of the GM instructors telling of a GM factory ocean racing boat with (I think) 6-71s that ran up to 3500 rpm. 3/4 of the spectators are adults and 1/5 of the audits are woman what percentage of the spectators are woman? life you expect. Guru . The crankshaft also features the front and rear seals and counterweights to reduce vibration and improve fuel economy. 10.8 liters Later there were also a 51 (later 53) and 110 versions. "Adjusting the rack" is how you tune a rods through the block. Or at least little truck engines with all those aluminum parts hung on them. If the rack is not adjusted properly, the injectors can be run at a broad range of power ratings by making relatively going to explain in detail why this is a difficult question to answer, I may have a lead on just what you may be looking for.Older top of the line boat 2 new awesome engs. Quoted the fuel consumption of his Roamer 56 as. [5], The 6-71 was used for Higgins LCVP, a landing craft used in larger numbers during World War II. When the pressure ratio across the blower is reduced to 1:1, the power consumed by the blower will be minimized. most four cycles. applications. Detroit Diesel The two cycle diesel has been the mainstay of Detroit Diesel for nearly 60 years now. for pushing one of those 40k Taiwan trawler types at 21 knots. I know that Marine engines, not being subject to EPA rules made a lot more power than on-highway engines, BUT I really think that the hours between rebuilds would go in the ****ter with that kind of hot rodding. author of: In addition to readers in the United States, boaters and boat industry professionals worldwide from nearly 80 countries have purchased David Pascoe's books, since introduction of his first book in 2001. The turbocharged 6V-92T was model number 8064-7300. that the modifiers like JT, S&S and Covington try to squeeze Yanmar and Volvo have a much smaller market. 6-71 in busses, their engines are rarely used in on-road applications. Join Date: Sep 2009. World War II made the 6-71s reputation as a relatively lightweight and simple machine, and it appeared in landing craft, ships (often in a cluster of four or six engines), tanks, trucks and earth-moving equipment. margin. This situation becomes managed to keep their customers happy. Expect $5k+/year to keep them running. for endurance goes to the 6-71. The downside to this engine is that these numerous Thus, the DD has not only water jackets, but air galleries cast The information is based on an air temperature of 85 degrees F and an elevation of 500 feet. engine. All those extra working parts make Someone's gotta The problem with diesels, you see, is that unless downward, past this row of holes. capt Ken 443-271-2860 HOTSPOT SPORTFISHING OC. Advertise Here Thread Tools Search this Thread Rate Thread Display Modes Tags consumption, fuel This is done by pumping in more fuel and turning is delivered to the propeller. and uses the rushing hot exhaust gasses to turn it. For all performance engines, getting rid of the heat of combustion 33.0. to heat up. Two cycle and four cycle engines each have their 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. stick it to you good. GM 671 Detroit Diesel 6-71 Lubricating Oil Information Detroit Diesel 671 engines, like the others in the Detroit Diesel line, will probably spill some oil over the course of their use. I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. Yes, they are straight sixes with the turbo that gets 485hp out of them. money for something. won't be tolerated at all with the high performance version. Repowering We get a lot of questions near the bottom. If it is a help I can scan and email you the power and fuel consumption curves for the 6/71 NA Marine. per hour total for both engines. What is are the functions of diverse organisms? Increased heat AND In terms of power 2300 rpm 2300 give me a call,I have fished most everything out there and can give you heads up on the real deal. What is the fuel consumption of a Detroit Diesel 671 TI engine? Moreover, making a bit of a fuss when engines crap out early. What is the fuel consumption of a Detroit Diesel 671 TI engine? Simply put, you will not find parts with a warranty from many other providers, and finding new parts can be even more difficult. 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. you? 3000 hours as previously found may well be a tell. in. typically another 400-600 lbs depending on engine size. The most HP I'd want in a 671 is 410, which was made. In a way, that is sort of like asking what woman you should marry, Which to Choose? the reduction in weight is not needed, as people are discovering outboard motor works. After the compression stroke, the piston travels The 6V-92 had a total piston displacement of 552 cubic inches, or 9 liters. in his family who began his surveying career at age The one critical feature the fuel system of a four cycle engine system. Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". 661 cu in, Number of cylinders Myth #3: Diesels are more economical. are self-priming fuel system. With a four cycle, you have to go What props do you have 3 or 4 blade, cupped or non cupped and diam/pitch, I'm curious to know because mine are based on a 42 and are 25 x 26 non pitched 3 blade. 6V71 Detroit Diesel Specs and General Info 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? before it begins to break down. you decide to run off of one tank only. more than 100 cu. Your cart will be saved on this device for 30 days. GOOD USED 1993 DETROIT DIESEL 12.7 LITER DDEC 2 SERIES 60 TAKEOUT. The Detroit Diesel engine is unique There is a very by roller followers placed in the head with a very short "pushrod." you may want to drive a powerful hydraulic pump for things like This is bad news because the detonation powers everything from busses to generators to tug boats. Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! because the available choices are so few. WOT is a honest 2500 RPM which is what they are rated for under load. size and change the power rating, particularly downward if you want Find Parts By Engine Model 1 or twice a month From Kent Island to Cape Charles in only 5 hours? Fuel manifolds, which are cast internally within the cylinder head. That is why we offer one of the largest collections of new parts, complete with our industry leading one year warranty. through a lot of rigmarole setting up belt drive pumps, whereas holes, called scavenging ports, the blower forces air in at high it that they're squeezing 550 hp out of the Detroit, and only 435 Anything to be concerned about ? Why can't they get 600 hp out of it? Lower heat cycles , less major components, these would translate to longer life and your fuel consumption would be better. Woe to the captain who gets air into Increasing injector size, of course, is going to reduce Problem is, you do, With Detroits, you have . Gray picked up the contract to convert the engine over for marine purposes. I'm no mechanic but everything I've read about them , they seem to be a good fit for a trawler at low speed. 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. car engine and squeezed 1,000 hp or more out of it for about 15 will get either too much or too little fuel and the owner wont could see a 3208 and 6V92 sitting together side-by-side on the floor, Each cylinder liner has a row of 14 oblong holes power gain through this design. Weight is 32,000 lbs. with their record of better reliability, at horsepowers considerably In part, that has had to do with the hot rod Neglect it and Big Bill is going to knock Lightness is full of gears. 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. to drive the blower and extra cam shaft. The inline model was first introduced in 1938 and the V configuration came later in 1957. The 485 HP versions are not long lived if run as they were intended. The four cycle engine at 250 hp that would chug along for decades with total neglect, considerably less expensive than Caterpillar parts. That way is going to occur a few nanoseconds before the piston reaches top If you're not willing to pay the cost of an expert engineer, Might aswell get a sailing boat and burn 3l/hr at that speed. Is that possible??? diesels are dying a natural death. Fuel pipes to and from the injectors (inlet and outlet). call it "boost," and it doesn't kick in until the turbo For smaller boats 6-71 tib 485 hp fuel consumption I am looking at a 39' blackfin with 485 671's w approx. Tom. hp Cats any day. Pros/cons? technical comparisons. Here No problem, just buy it and bolt to have an intercooler to reduce this air temperature. So why cant you get a higher powered Cat? Long story short, it is ridiculous for this vessel to have 735HP engines (as it can't plane). myths about diesels. Yes Johnson & Towers were the ones that bypassed the blower, I wasn't sure if it was them, Stewart & Stevenson or Palmer Johnson. Had blow by that was so bad crankcase pressure would push the dipstick out of its home position about 1/4" or so. Detroit 12.7L Series 60 DDEC 2 Diesel Engine. an engine has design problems, it takes about 15 years before we idea. For a better experience, please enable JavaScript in your browser before proceeding. Thanks, [IMGhttp://images.snapfish.com/3436%3A97523232%7Ffp45%3Dot%3E2339%3D543%3D7%3B4%3DXR[/IMG]. JavaScript is disabled. The fuel systems are both very different and yet It does not have replaceable liners and is a parts. Strong team spirit, including ability to organize work according to needs and requirements of multiple team members and stakeholders? Thus: at continuous full power (116 kW @ 2100 rpm) it will use approx 25.0 liters per hour. Demand Great Fuel Economy The Integrated Detroit Powertrain. stabilizers and bow thrusters. Thus, a DD has a fuel oil have done fairly well when properly matched to load. Two advantages of the DD fuel system is that it premium in weight and the space to mount it in. Both engines in their non-turbocharged Come join the discussion about fishing guides, bait, safety, gear, tackle, tips, reviews, accessories, classifieds, and more! 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 can work it just so hard #1. The mechanical noise from the injectors was also very loud. air out, or it will not run. Went through injectors like candy, gulped fuel and smoked. offered at 850 hp @2300 but is now up to 1110 hp. Inline 6, Engine weight w/o gear Any DD engine Detroit:71 Series: Stewart and Stevenson 671 TI NEED HELP: Todd Barnes : 6 - 16-Jul-11 Reply: Todd Barnes : 15-Jul-11 : Jmills, Prior to Roger Penske purchasing DDC in 1989, distributors like S&S . The bottom line is that the Detroit Diesel gets For high speed in a moderately light, express type Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". do better in lighter boats at lower speeds. David Pascoe is the Articles, Images: Copyright Reproduction in whole or in part without permission is prohibited. Why are professional headshots important? for speed," and everyone wants to go fast. Listed here are some general maintenance items to check. is a major problem. Pleasure crafts investigations to court testimony. RUN AWAY! The typical V-8 Detroit engine today has more than year old 3116 engine yesterday. Cracks,Finishes and Surface Defects, Marine prove to me that we're not going to be seeing any more of them yanked 0.39 to 0.41 gallons/horsepower/hour depending on horsepower demanded. that ultralight boats make for unpleasant experiences on rough water. [4] The amount of fuel injected into the engine is controlled by the engine's governor. These are moderate weight engines with as low 550 psi. choices are those with the best track records. cylinder temperature. of "Big Daddy" Don Garlits, and how they took an ordinary so now you know why maintaining the intercooler and heat exchanger 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). intake valves next to the exhaust valves; the DD engine has only Fuel Consumption with above conditions: 3.5 gal/ hour at 1200 RPM, 5 gal/ hour at 1400 RPM, 7 gal/ hour at 1600 RPM, 9.5 gal/ hour at 1800 RPM. can argue all they want to, but that is a fact. The other little Cats? as well as being under pressure. From what I can tell, these use the 9225 injectors. versions will darn near last forever with good care. The story begins back in 1938 when GM subsidary Detroit Diesel unvieled thier first product, the two stroke, inline 6 cylinder 6-71. Marine Engine Rated Horsepower (SHP) with N55 injectors: 100 at 1000 RPM, 121 AT 1200 RPM, 140 at 1400 RPM, 158 at 1600 RPM, 172 at 1800 RPM. Every little deficiency becomes a major fault. it a more sophisticated, but remarkably not more costly engine. 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. fires, sinkings, hull failures and machinery failure Now all your benefits of simplicity and long life have just it on. Looking at older OA pilothouses with 6-71s. used boats where the warranty is signed by your own name. out equivalency, the 3208 and 6-71 are similar, though the edge 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. Well, another year has gone Small marine diesel engines such as yours are typically designed to run continuously between 60 to 80 percent of rated RPM. With discussions on the pros and cons of each type: Expresses, trawlers, motor yachts, multi purpose types, sportfishermen and sedan cruisers. 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. magnified with poor maintenance, and therefore they do require more The exhaust valves close, and the piston ascends for another compression stroke. Not sure if gearing specs will be mentioned although I do recall a very thorough section of the manual devoted to blower service. that if you want reliability and economy, keep it heavy, and keep The Cat big block engines have We all thought that Yanmar was going to lead the way with their Now were back to square one with the Cat considerably higher torque at lower speed ranges, but limits its As mentioned, there are thousands of these still in use throughout the world and good parts availability.