Detroit 8v71 marine fuel consumption. Okay, I finally got a 16V-92TA engine performace curve faxed to me from Detroit Diesel. draft 7. Fuel consumption Liters per hour 124. Caterpillar’s 3512 continued to dominate the high-horsepower market, while Cummins focused on improving fuel efficiency and meeting emissions standards with the QSK Series . Oct 4, 2006 · "Does anyone out there have a rough idea what fuel consumption is on 8v71 320 HP marine engine? I have no idea what RPM's they're running at but I can tell you they're pushing a 140' 392 GRT boat to 10 knots through TwinDisc MG512's with 2. Thanks. 5 gal/hr giving about 2. but look in the DD book under Covington and 765hp and you can probably find it. Rear - Oversize - Single Lip for 271, 371, 471, 671, 6V71, 8V71, 8V53 and Front fo r 16V71,12V92, 16V92 Engines Oct 2, 2024 · 1940s to 1960s: Detroit Diesel Dominates the Early Days Detroit Diesel vs. These engines, available in different configurations like the 271, 371, 471, and 671 … Dec 26, 2017 · I'm guessing the cams were advanced because 2 different Detroit Diesel dealers INSISTED on setting the injectors at the marine height 1. 0 Compare the specs of this Cummins engine with that of a Detroit of comparable power rating. Time Fuel Injector . 0539. We carry some of the most extensive lines of premium replacement parts for Detroit Jun 30, 2022 · Service Manual For 6V71, 8V71, 12V71, 16V71 Detroit Diesel Engines . After the exhaust valve clearance has been adjusted, time the fuel injectors as follows. (d) Availability of spare parts for this engine. I will be extremely interested in the experience you have with speed and fuel consumption to compare against mine. put two big oxy bottles on both sides of these engines with one Aug 1, 2021 · The Detroit Diesel series 71 were perfect for powering larger machines. Running those big engines that slow takes it's toll. 687. So, you can make you 450 hp well before 1800 rpm with the 8v92, but a 6v will have to run up to 2300 rpm to make 450 hp, or run a bunch more turbo boost. Can the same fuel consumption be expected of Jul 25, 2005 · Of course, while the engine speed and boat speed change in a linerar relationship, the fuel consumption, alas, does not :-) I can send you the engine speed <-> boat speed numbers if you like. They run forever but should you need a rebuild, most can be done in-frame. I know at 1950 and 17 or 18 knots I do approx 52 gals an hour with genny. WITHOUT THE AUTHORIZATION OF DETROIT DIESELOR IT’S SUCCESSORS. 84025 ± 0. We are here to help. The Specific Weight of diesel is 7. 1 inches mercury, and a fuel pressure at cylinder head of 40-60 PSI. 1 liters. When it breaks, we know just how hard it can be to find replacement parts. Does anyone know what the estimated fuel burn is at cruise? Say full fuel, water and 6 people on board. Old Detroits rarely turn up to spec at WOT. Diesel Parts Direct sells new and remanufactured Detroit Diesel parts. I really want to know what they are like to live with, ie noise, fuel and oil consumption, ease of maintenance, daily operation. My single 6v53 runs great in a 26' personnel boat, and gets the same fuel consumption numbers that have already been mentioned. Detroit Diesel 8V71 Usefull Information The Detroit 8V71 is a classic, hearty engine, designed to be tough and work for long periods of time with proper maintenance. Search. Most of our cruising is done at 7 - 10 knots. The Maximum Engine Fuel Consumption is determined by Gallon Per Hour (GPH) = (specific fuel consumption x HP)/Fuel Specific Weight. Mar 12, 2007 · Anyone have any good fuel consumption data on 8v92's at about 1200 RPM? Planning some long Island "cruises" this summer. Feb 10, 2023 · We offer a variety of upgrades, including valve covers and exhaust systems. 1100 RPM should give you +/- 9 knots and way better fuel economy. Caterpillar 3208 captains who needed power without sacrificing fuel economy. 942 ± 0. I want to use the Racor 75500MAX, but am getting conflicting fuel flow data from the "interweb". My dad wouldn't listen to that advice, ran Rotella (a fine product for it's intended use) in his 8v71 and ended up ventilating the block with a connecting rod. Detroit Diesel 8v71 Arrangement, Displacement, Bore, Stroke and Compression Ratio Arrangement 8v71N 8v engine, naturally aspirated, two stroke cycle 8v71T 8v engine, turbocharged, two stroke cycle Displacement 8v71 - 9. Oct 2, 2024 · Detroit Diesel 8V71 vs. the Series 92 engines were an instant hit, as they boasted several applications, the most prominent of which was buses. 5ft. They are not the quietest or most fuel efficient but spare parts and mechanics are plentiful. Apr 13, 2021 · If you spend a lot of time idling they can really drop the fuel numbers, we went 8v92 to scania and the idle fuel consumption went down from 3 gph to 1. Detroit Diesel 6-71 vs. Did the Tortugas at 10 knots at about 1200 RPM last summer, but also made some "planning" legs. DD-S-V-71 SER DDeettrrooiitt DDiieesseell Service Manual 6-V71, 8V-71 & 12V-71 Diesel Engines THIS IS A MANUAL PRODUCED BYJENSALES INC. Jan 29, 2007 · (c) The owner does not have the details about fuel consumption at different revolutions on load. I have ridden on S50 transit buses in the back to listen to the engine, and except for a minor amount of vibration at idle (no more than any other 4 stroke Diesel), it Jan 17, 2008 · TOPIC: [30831] 8v71 (turbo) Fuel Consumption At 800-1000 Rpms? Can anyone comment on the GPH used at 800-1000 rpms using Detroit 8V71 engines? They are in a 58 Hatteras Yacht Fish. Find the best priced used Detroit 8V71 Engines by owners and dealers. That was over a month off! Even considering the time it took us to Furthermore, it actually includes the fuel consumption per brake horsepower produced (pretty dramatic differences between the early 8V71s and the "fuel squeezer" 8V71 versions and the 8v92s on fuel consumption!) We carry new and remanufactured fuel pumps, pump assemblies, and fuel pump repair kits for Detroit Diesel 6V71, 8V71, 12V71, and 16V71 natural and turbocharged engines. 5 lbs per gallon. Aug 23, 2011 · Re: 8v71TI fuel consumption. There is a "fuel consumption" curve that shows @ 1200rpm fuel consumption is nearly 50 gal/hr per engine (seems very high) up to nearly 80 gal/hr @ 2300rpm, which is probably about right. Was pretty happy as that boat will do 5-600 hrs a year idling. 2 X 12V71N main engines and 671 100KW Apr 3, 2013 · My fuel consumption is about what has been described - around a gallon per statue mile at 9 kts. Feb 1, 2009 · Does anyone have fuel consumption rates at various rpms for 8V71 naturals? They are in a 53MY classic. Menu. Camshafts. Aug 5, 2020 · I'm on the hunt for a nice Hatteras, have been looking at 53' MY, 58' MY and 56' MYmy understanding is that at hull speed both the 53 and 58 may achieve something along the lines of 20 GPH, both the 53 an 58 are the 15'10" beam, the 56 however has an 18'10" beam. This is a good time to check the coupling fork, an example of which can be seen here: 8V71 Coupling Fork Sep 20, 2024 · Here’s a detailed maintenance schedule for the Marine Detroit Diesel 8V71 engine. The 6V71 and 8V71 models became staples for tugboats , offshore vessels , and larger fishing boats , providing significantly more horsepower while maintaining the two-stroke simplicity. How does the Detroit Diesel series 71 work? All engines in the Detroit Diesel series 71 use uniflow scavenging. of the Detroit Diesel Marine 8V71 Engine & Its Use Today Oct 28, 2008 · Was satisfied with all aspects except the fuel consumption (104gph) at cruise. wes. guy (Richard M benign who workforce Detroit for 16 years as a research designer he had some really crazy stories about Detroit drama told me he helped build a pair of 6_71 Detroit ers used in the boat called BANKSHOT used in the movie Bermuda triangle,he said they. 6. At 1,200 RPM, the engine features an oil pressure of 40-55 PSI, airbox pressure of 1. My search has taken me to boats which have the 8V71TI and the 8V71N. TI's are in the turbo boost at 1750. Personal menu. 5 gph while getting 1. V 71 Series engine pdf manual download. The specs I have are 25knts cruise 30 top end but no fuel rates. Fuel burn would be about 3. Your assistance in this regard would be greatly appreciated and awaiting your kind reply. I see anywhere from 10 GPH at 10Knots +/- 5 GPH. construction, highway, and marine applications. Rear - Oversize - Single Lip for 271, 371, 471, 671, 6V71, 8V71, 8V53 and Front fo r 16V71,12V92, 16V92 Engines Aug 24, 2006 · I just purchased a 1997 45' Ocean SS. With the installation of these upgrades, you’ll be able to get the most out of your Detroit Diesel 8V71 engine. . BASIC ENGINE PERFORMANCE MODEL 6V-92 WITH 80 INJECTORS performance BASIC ENGINE PERFORMANCE MODEL 6V. Oct 24, 2024 · Service Manual Insights For Detroit Diesel 271, 371, 471, and 671 Engines (Volume 1) Introduction to Detroit Diesel Series 71 Inline Engines The Detroit Diesel Series 71 engines have been a staple in various industries, renowned for their reliability, durability, and efficiency. THESE RATINGS do not in- clude power requirements for accessory and standard equipment. Feb 20, 2008 · "I have a Bertram 46 with 2 8v "I have a Bertram 46 with 2 8v71 turbocharged eng, 1976 model. 25 in, 108 mm Stroke 5. Partnered with people that have experience, but want to learn more to help upgrade the boat. fuel usage rate would you expect for a 1968 50' Hatteras MY with 8V71 naturals, say at 1300 RPM? Park Oct 2, 2024 · In the 1990s, Detroit Diesel’s Series 60 brought electronic fuel control to the marine market, competing directly with the Caterpillar 3512 and Cummins QSK Series. When we broke down on June 14th, the thought that we might still be in Billings when Cherie's 40th birthday rolled around on August 4th seemed like something to joke about. If your boat had been powered with say 8V71 naturals you would have easily logged 10,000 hours before rebuilding. 3 kts. 1 mpg, with the gen running 60% of the time. No reason you should not get well beyond 5,000 hours if the boat is used regularly and not run over 2,000 RPM or so. 8 NPMG at about 1400-1500 RPM and about 0. put two big oxy bottles on both sides of these engines with one Apr 4, 2022 · fuel consumption: xort: Monohull Sailboats: 54: 19-05-2019 02:47: detroit fuel use: Capt Allan: Engines and Propulsion Systems: 10: 06-07-2013 08:36: Fuel Consumption and Fuel Economy: Seif: Powered Boats: 11: 18-10-2012 09:35: using hydrogen fuel cell to improve gas consumption: phorvati: Engines and Propulsion Systems: 53: 03-03-2009 11:31 Aug 22, 2021 · Max Fuel Consumption for 8V71 350Hp - Sizing in Racor Dual Fuel System All, new to forum new to boat ownership. The 8V71 became one of the most popular models in the series, due to its high power-to-weight ratio and efficient two-stroke design. The Series 92 engines were introduced in 1974. fuel, you will probably side with parts and go ahead and burn the little bit of extra Dec 7, 2011 · Re: Installing block heaters and thermostats 8v71 I don't see how cold air traveling through the exhaust could ever cause condensation in a warm engine block. Detroit:71 Series : Date: 09 June, 2007 - 10:27 PM TOPIC: [27685] Engine Noise and Fuel Consumption 8v71 Vs 6v71 Jun 3, 2012 · For the DD experts, what approx. 3 litres, 567. They were also 2-stroke, which gives better power, but lousy fuel consumption; we figured 10 or 15? gal/hour fuel consumption (hardly remember now). Place the governor speed control lever in the idle speed position. This engine was in high demand during WWII, necessitating a dramatic increase in output: about 57,000 6-71s were used on American landing craft, including 19,000 on LCVPs, about 8,000 on LCM Mk 3, and about 9,000 in quads on LCIs; and 39,000 Oct 13, 2011 · I once met a. Detroit. [7] Compared to the Series 71 engines they were derived from, the Series 92 featured a larger bore of 4. Mar 22, 2013 · 1988 ford van fresh overhaul, 1991 nissan pick-up 1993 Caprice 2000 GMC S10 Blaser 2007 nbs 3500 GMC 4x4 crew-cab long box 17 inch single wheels Duramax Alison. What fuel consumption can I expect at 1000, 1500 and 2000rpm, max rpm 2100" Oct 13, 2011 · I once met a. Sep 21, 2021 · The Detroit Diesel 8V92 is a V-8, two-stroke diesel engine, which boasts a displacement of 738 cubic inches or 12. Detroit Diesel 8v92 produces 312 HP, with Specific Fuel Consumption of 124. When you compair the cost of parts vs. 032 mm) and an identical stroke of 5 in (130 mm) for a nominal displacement per cylinder of 92 cu in (1,510 cc), from which the Series 92 derives its name. 8 lb/HP. steel vessel, beam 28ft. My goal is using the Hatt 53 is to cruise at displacement speed and to live comfortably with my wife and two young kids. My understanding is that condensation occurs as warmer air cools down to the dew point, because warm air holds much more water vapor by volume than cold air does. It takes the prop hp curve above and applies the fuel consumption measured by the manufacturer at each rpm and load, so it is partially theoretical (the prop load) and partially real world empirical (the fuel consumption at that rpm and load). The largest cylinder configuration, the 24V-71, produced an impressive 1,800 horsepower and is mainly used for marine applications. Sounds like a lot, but fuel is about 3$ gallon. This should get you to hull speed of 9. If a stop lever is provided, secure it in the stop position. Oct 7, 2024 · 6V71, 8V71, 12V71, and 16V71: As demand for larger and more powerful engines grew, Detroit Diesel introduced V-block configurations. Jun 9, 2007 · Marine Diesel Engines. At end of the season we appeared to have burned about 500 less gallons of fuel. but I thought I was at about 20 gals an hour with genny. Dec 4, 2017 · I had the 8V71 in a 46 ft boat and loved it. 92T WITH go INJECTORS standard equipment Governor—Limiting speed Jan 13, 2010 · How have you fund the fuel consumption at trawler speeds Thanks I am well and truly on the hunt now for a 53 MY. Apr 21, 2014 · It had twin 8v71 Detroits the the 350 hp version, on the leg from Port Charles marina on the Mississippi near the mouth of the Illinois river to Hammond, Indiana we burned 5. Fuel System. 0:1 reduction. With my '72 48YF, I averaged about 0. 96" and the motors black smoked so bad, you could not see 50' past the transom. If you could find any details about fuel consumption, and pass it down to us, it would be a great help. com. 1750-1850 is an ideal RPM for the 8V71 to cruise however in your case I doubt you plane at 12 maybe at 14 though. View and Download Detroit Diesel V 71 Series operator's manual online. Cummins. Mar 5, 2010 · Results of a web search seem to get opinions that they are reliable engines but not very pleasant in a pleasure boat. Jul 28, 2015 · TI's spec is 2450 no load, 2350 loaded but I would not push a 40-year-old-plus motor. fuel filter housing Parts for Detroit Diesel V 71 Series 6V71, 8V71, 12V71 & 16V71 engines. at 1000 rpm [8v92s 735 hp; 55' w/' 17' beam]; genny [20kw Onan] use averages 1 gal per hour at 1/2 to 3/4 load. It has 485 hp DD 6-71 TIB engines. Please note that these are typical intervals, and some results may vary based on operating conditions: Marine Detroit Diesel 8V71 Component Maintenance Life Component Maintenance Interval (Hours) Notes Oil and Filter Change 100-150 hours Regular oil changes are critical for lubrication and engine […] Apr 2, 2022 · It has a two-stroke diesel engine, which boasts a displacement of 12. 00125 in (122. 7:1 8v71T 17. Aug 20, 2013 · It took longer than any of us imagined it might. The inline six-cylinder 71 series engine was introduced as the initial flagship product of the Detroit Diesel Engine Division of General Motors in 1938. jpg 6-71N (1938): 130hp, 2,215 pounds without transmission Above: 8v71 N (1957): 335hp, 3,130 pounds without transmission General Motors’ 6-71N (inline 6-cylinder design, displacing 71 cubic inches per cylinder) debuted at the New York boat show in 1938 producing a then-remarkable 130 horsepower from 2,740 pounds including a marine transmission. com/detroit-diesel-8v71- Nov 28, 2011 · 8v71n_70837000_1. Cummins H Series. Series 60 Marine Power for Commercial Vessels Aug 27, 2022 · The fifth or bottom curve is what you want to use to estimate fuel consumption at cruise on your boat. Please use the product links below to explore our inventory. Launched in the 1980s. 0 in, 127 mm Compression Ratio 8v71N 18. Sep 21, 2021 · The Detroit Diesel Series 8v71 is a two-stroke diesel engine, which offers a displacement of 9. The 56 has 8V92 Turbo Detroit Diesels. Parts For Detroit Diesel 8V71 Turbo Engine Oct 9, 2009 · "Dear Marvin, Ano "Dear Marvin, Another question on 12V71 naturals on consumption, a 125ft. In this video (Part 2 of 2) we assemble an 8V71 long block. 9 Gallons per hour 33. Below is a link to a completed long block for purchase:https://dieselpro. Step Two: Remove the three bolts and remove from the governor housing. Feb 10, 2006 · The 8v92 is like previously said a hot rodded version of the 8v71 but with some changes the 71 series are a dry sleeve and the 92 is a wet liner engine and the specs are the 8v71 is 318 n/a and for an 8v92 the T/A ranges from 425 to 445 from what ive seen and ive only seen the green versions no silvers and the greens DO NOT LAST with a turbo, very impressive for about 6 months and then Oct 24, 2024 · Browse Detroit 8V71 Engines For Sale near you on MyLittleSalesman. 5 cubic inches. I do not remember the injector number. CONTINUOUS SHP—Net power e at the marine gear output shaft continuous duty o wor{boat app ications PROPELLER LOAD—1rWcates horsepower absorbed by a Wpica propeller and the corresponding fuel consumption throughout the speed range. Any ideas? Thanks in advance. 0:1 FUEL CONSUMPTION CURVE shows fuel used in pounds per brake horse- power hour. Aug 30, 2009 · If you're in full displacement mode, assuming the hull is efficient in displacement mode, the rule of thumb is 2 HP per ton, or 63 HP for your boat. Oct 8, 2024 · The 8V71 was designed with eight cylinders in a V-block configuration, providing a compact and powerful solution for marine and industrial applications. 888. Vessel Types and Fishing Regions: Small to Medium-Sized Trawlers in the North Atlantic and Great Lakes; Drift Net Boats off the West Coast and in the Gulf of Mexico; Crab Boats in the Bering Sea; Detroit Diesel 6-71 (1938) Jun 7, 2006 · We had 6-71 marine engines in our Sea Scout boat (many years ago--50' steel hulled ex-Army cabin cruiser of sorts) and those things were HUGE compared to automotive engines. Typical 8V-71 Fan-to-Flywheel Model fan-to-f models . Created Date: 4/17/2006 9:29:40 AM But given the fact that the bigger the cylinder displacement is with fewer cylinders means better fuel economy (mainly less friction-and the 8V-71 has a bunch of friction). 7 mpg. All of these upgrades are designed to increase the power and performance of your Detroit Diesel 8V71 engine. The 6v will get better fuel economy because of the increased boost. 3 liter, 568 CID Bore 4. 5 NMPG at about 1800 or 1900. Shane Boat Source International Marine Brokerage To service the 8V71's fuel pump, follow these steps: Step One: Disconnect all of the tubes that may contain fuel, including the inlet, outlet, and drain tube. oautsw ylgh hoh jlmo qwg urmfn jlgm dimgdo qwyj iiffl
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