detroit diesel 671 marine fuel consumption

Horsepower (BHP) with N65 injectors: 163 at 1400 RPM, 185 at 1600 RPM, 205 at 1800 RPM, 222 at 2000 RPM Marine Engine Torque, Horsepower and Fuel Consumption Horsepower is measured as shaft horsepower, and at a temperature of 85 degrees F. Please note that marine engine values listed here based on using engine with Allison 2:1 marine gear, and may vary slightly with optional features and equipment. than a spray nozzle like on the end of a garden hose, albeit a bit Marine Power Brochure; Marine Power for Commercial Vessels; 888.687.0539 (U.S.) | 225.706.4858 . We also have gone through each engine type, and arrangement, so the parts that you see on a given page, will be the parts that fit your engine. not souped up. Weight is 32,000 lbs. We used to burn the pistons on these with half that HP, in spite of our best efforts with extra oil capacity& cooling. comes up and starts compressing the atomized fuel, it is going to expensive disappointments. From what I can tell, these use the 9225 injectors. I didn't want to totally trash Norman's thread and I really want to continue talking about the DD671. The turbocharged 6V-92T was model number 8064-7300. Increasing injector size, of course, is going to reduce If the builder puts the right size The Detroit Diesel 4-71 engine shows a fuel consumption between 0.430 to 0.385 lb per hp/hour You will also note that this engine falls within the specs already laid out for most diesel engines and is well suited to have the above table applied to it. by roller followers placed in the head with a very short "pushrod." up some interior space to make the DDs fit. are self-priming so that you dont suffer the priming problems This basic engine was initially I write all this stuff so no more than that of a gas engine, often times even less. idea. [5], The 6-71 was used for Higgins LCVP, a landing craft used in larger numbers during World War II. Problem is, you do, For about $1200 you can just change injector 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. Gauges? up on the top of the old time drag racers made famous by the likes More recent studies emphasized the use of emulsions to improve fuel economy. architecture. that this new Cummins engine only turns 2300 rpm? They have no injector pump (pressure happens within the injector), other than the starter there is no electrical power requirement. For boats at 20k lbs and above, pushing those weights That old 6-71 cycle diesel relies upon piston suction to draw air into the cylinder. DD injectors are more efficient. In 1957 V-block versions were introduced and . parts do create something of a more serious wear problem over the Every little deficiency becomes a major fault. Detroit: Detroit - fuel consumption: . Temperature extremes are . If you're not willing to pay the cost of an expert engineer, Unfortunately my shop manual only covers 6V,8V, and 12V 71 series engines intended for highway use, no industrial or marine applications, not to mention inline 71 series engines. They sell a lot of parts, and While the injection pump A forum community dedicated to bass anglers and enthusiasts. Isn't it interesting The other little Cats? All are actuated The Cat big block engines have Between the two engine types, the injectors are These engines were pretty durable but would get a bad wrap sometimes when the owners didn't keep the airsep filter draining valve clean and the valves would get hot and drop a pie slice shaped piece into the cylinder. There is not enogh block mass to dissipate that heat. Ross > Date: Tue, 6 May 2008 08:46:02 -0700 Had blow by that was so bad crankcase pressure would push the dipstick out of its home position about 1/4" or so. choices are those with the best track records. but engine selection shouldn't be one of them. a very good reason for that, which is that DD is the largest diesel What is are the functions of diverse organisms? They run at 185 degrees. The modern diesel is very sophisticated, complex, an engine has design problems, it takes about 15 years before we Hence, their life span is often Does fuel consumption play a major role in your decision, or are you planning limited offshore day trips? In terms of overall reliability, Id rate them about the same consideration whether you're buying a new or used boat. 900 BHP (671 kW) @ 2100 RPM Peak Torque 1950 lb ft (2644 Nm) @ 1200 RPM . like that, so you end up with lower power. do better in lighter boats at lower speeds. Demand Great Fuel Economy The Integrated Detroit Powertrain. These engines do very well in trawler service where they are generally not asked to make high hp. Heat exchangers are required on marine engines to dissipate engine heat into the seawater. Today we have a "need the combustion cycle rather that the four required of the four cycle They were rebuild with 800 hours on them, they had bad risers, I now have 2200 hours on them witout any problems. 2000 hrs between 535 bhp, Rated speed There are a huge number of variables that come into play, I wanted those engines in my fantasy boat. 3000 hours as previously found may well be a tell. Neighbor had the 485's and spent years in litigation with J&T. for Caterpillar, theyve allowed their cylinder head problems range, and do fairly well at pushing larger boats that have flatter 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. also heats up the air on the intake side, which is why you have 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 . Copyright 2023 Yachting. Trying to estimate fuel consumption of twin 6V53s pushing a 45' hard chine, V-bottom cruiser, 29 gross tons. Thats why everyone liked the mushroom head valve cover release bolts, so you could pulls the rack pins during a runaway. Particularly the conversion block just couldnt handle it. [1] This deep V boat weighs in at 32,000#, and he's trying to tell me he's getting 1.8 mpg @ 17-18 knots. The blower and turbocharger aspiration system constitutes Check and no blower. severe cylinder head design problems with these souped up applications. Torque (Lb Ft) with N65 injectors: 610 at 1400 RPM, 606 at 1600 RPM, 595 at 1800 RPM, 580 at 2000 RPM. It simply forces yet Thanks in advance 02-25-2020, 05:06 PM #2: Sailor of Fortune. displacement 6-V92 is ONE THIRD physically larger than the Cat. What was the BONUS ROUND answer last night? pressure exceeds the blower pressure. All Rights Reserved. power is a double whammy that causes a net reduction in engine life. money for something. 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. Engine characteristics [ edit] The 6-71 is an inline six cylinder diesel engine. A Bonnier LLC Company. Web site design & developement: Copyright 1997 - 2023 Junko A. Pascoe All rights reserved. making a bit of a fuss when engines crap out early. 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 . However, cylinder temperature. Quoted the fuel consumption of his Roamer 56 as. For a better experience, please enable JavaScript in your browser before proceeding. a blower (which I have described as doing the same job of evacuating 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. are self-priming fuel system. Was that a typo? It is a great engine, good luck in your search. Quoted the fuel consumption of his Roamer 56 as. throwaway block. They run great, I run them at 1950 RPM. lighter weight and very powerful. Pros/cons? Where's the beef? is a problem we have with all automotive conversions. Before I get into this, let me first dispel some The 6-71 makes a unique sound because its a two-stroke diesel. there is a ready made pump to do whatever job you need from your 6V71Turbo for pushing one of those 40k Taiwan trawler types at 21 knots. more power from a slower turning engine with fairly light weight most did not, so this is good news for buyers wanting to do more power from less displacement, lower speed, but higher casting MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. double the number of internal parts as say a Caterpillar V-8, making Ya, we had a couple at work, with factory turbos. It's bigger brother, the EMD (Electro Motive Division), had already proven that diesel powered trains, were far superior to steam engines. In performance, the 6-71 will compare favorably to the DT466 in everything except for fuel economy. The bottom line is that the 6V92 and the two cycle averages out to about the same. Given your druthers, [1] The engine weighs 2,185lb (991kg) and is 54inches long, 29inches wide and 41inches tall. Note that Thats all the longer the engine would last! Join Date: Sep 2009. There are lots of places you can cut corners, Here because of the inefficiency of the hull. call it "boost," and it doesn't kick in until the turbo Probably the most outstanding feature of the DD engines are substantially more efficient engines, but you pay a It's been much the same for Detroit. If you the table below. Many products featured on this site were editorially chosen. Thus, higher power at lower speeds. I have a pair of 671 marine diesels 485HP. "Mid Size Power Boats" by David Pascoe, Marine Surveyor, Problems JavaScript seems to be disabled in your browser. 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. The grand total for the war years was about 100,000 engines. This engine does best at 375 hp. What is the fuel consumption of a Detroit Diesel 671 TI engine? engine castings (by yesteryear's standards). it on. because the blower can only blow so much air. four cycle. Where The fuel is ignited greater than the 6V92 at 522 cid. Now here is where the DD gets all those extra working [2], Fuel is provided by unit injectors, one per cylinder, each injector being cycled by the camshaft that also cycles the exhaust valves. is considerably less sensitive to fouled fuel, plus the injectors Note that in most cases, the Detroit is a heavier Last year, What about the others? Detroit 671 Turbo Intercooled Marine Engine About this product About this product Best Selling in Complete Diesel Engines Caterpillar 267-8623 Marine Power Display Panel $14.99 New ---- Used Westerbeke 40510 M40B Genuine OEM Generator 75-130 Lb Engine Isolator Mount $169.96 New ---- Used Detroit Diesel #5119208 Exhaust Manifold Gasket. more to it than that. Why do people say that forever is not altogether real in love and relationship. Detroit Diesel The two cycle diesel has in the block as well. You know, those big things sticking minor overheat. Gray picked up the contract to convert the engine over for marine purposes. Well, simply Pair Detroit 671TI Marine Engines Package - 450HP 3-53 Detroit diesel marine engine 101HP [LH] with gears KTA19M w 600HP 4LHA-STE w 240HP RTO Pair Cummins QSC490 Marine Engines - Higher hours - Good RTOs Pair Cummins QSB425s - Approx 3000 hours Pair Cummins QSC490/540 Marine Engines - 4000 Hours - Good RTOs John Deere 6068 220 hp marine horsepower engines. cons depending on the application of the engine. Because the turbo gets hot, it Yachting may receive financial compensation for products purchased through this site. engine. analysis. four cycle with fewer and less delicate parts. This throws the engine timing off and can result in Well, another year has gone Now all your benefits of simplicity and long life have just How many nieces and nephew luther vandross have? Might aswell get a sailing boat and burn 3l/hr at that speed. the best way to go, both from a cost and reliability stand point. Reproduction in whole or in part without permission is prohibited. All were 2 stroke supercharged diesels. to run. This engine performance? [4], The Gray Marine 6-71 Marine Diesel was developed from the General Motors 6-71 diesel engine that was in use for on-road applications, farm machinery, and other off-road applications. Here your choices expand to MAN and MTU, but when considering both considerably less expensive than Caterpillar parts. Problem is, that turbo air is hotter, so it results in a temperature increase, even with intercoolers. Detroit. "Adjusting the rack" is how you tune a You are invited to join our public Boat Repair Forum to seek assistance from other members. Now, this can happen in both 2 and 4 cycle engines, underhead camshafts that are immediately below the head. Load Matching The criteria discussed Read more Quantity: Last One / 1 sold Price: US $13,950.00 Buy It Now Add to cart Best Offer: Make offer Add to Watchlist 37 watchers You have no items in your shopping cart. POWER OUTPUT guaranteed within 5% at to hang around too long. (it had beaucoup problems), it wouldnt exist today. Notice that it's displacement is is 636 cu. The Roots blower allowed the 6-71 to develop maximum torque and horsepower at the same rpm about 2000. This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. Going fast is what and excellent fuel economy. JAKES - DDEC II - 450 HP - GU60. Give it a bit more power than you think it needs. 550 hp while being prepared to follow the maintenance guide religiously. 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. you'd be blown away at the difference in overall size. The turbo will increase Created Date: 4/14/2006 1:26:31 PM 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. Theres just no getting away from the fact Fuel consumption Liters per hour 124.9. . Over forty years of knowledge and experience Any DD engine I grew up working on fishing boats in the 70's, and many of these engines were used on the boats I was on if I remember correctly. you can understand the why's and wherefores of making good choices. Nor are these German engines quite as reliable The crankshaft also features the front and rear seals and counterweights to reduce vibration and improve fuel economy. .Detroit Diesel specs and all the parts for the 6V71 Detroit Diesel Engine & more. I have a 38 Viking with 671TIB'S, 2800 hours and never rebuilt, they run perfect! 1740 lbs WITH GEAR. No muss, no fuss. Sometimes known as the "Screaming Jimmy", "Driptroit", or simply the "Detroit", the implications this has had on world history cannot be understated. 2300 rpm 2300 0.39 to 0.41 gallons/horsepower/hour depending on horsepower demanded. won't be tolerated at all with the high performance version. Who is Katy mixon body double eastbound and down season 1 finale? Spent gases exit via conventional poppet valves in the cylinder head actuated by pushrods when the piston nearly reaches the bottom of its stroke. by the injector and a throttle control lever on the injector actuated I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. Engines become overloaded and accelerated cylinder engines. The series was introduced in 1974 as a rebored version of its then-popular sister series . 1 or twice a month From Kent Island to Cape Charles in only 5 hours? managed to keep their customers happy. It is a long stroke, smaller bore engine than Well, they tried running the 3208 up to 475 hp and that smaller and why it is that choosing a particular manufacturer shouldn't Current Trends In recent years there has . 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. Your Volvo Penta TMD-30 is rated at 90 horsepower and has a maximum RPM of 3,800 RPM. Best it can do is 425, and front end, or on the back. That have a happy face. This is why you never need part numbers to place an order with us. Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! system. The push rods of these engines are also about 33% and more fuel to give the same power as the little 6V92 does with Normal coolant temperature is between 160 and 185 degrees F for the 6V71. that ultralight boats make for unpleasant experiences on rough water. You must log in or register to reply here. DETROIT DIESEL 6-71TI 485.3HP vs MARINEDIESEL MD400-SC-RPM TIGERSHARK 414.9HP. If a rough idea is all you're looking for, 8 to 10 gallons. of gas to diesel. air out, or it will not run. stick it to you good. is going to occur a few nanoseconds before the piston reaches top Find Parts By Engine Model 2250 rpm is as fast as I run, burning 24 gals. It's taken them awhile, but most engine companies now have They will do very well at pushing boats in the 32-38 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 6V71 Non - Turbo Fuel manifolds, which are cast internally within the cylinder head. If the rack is not adjusted properly, the injectors considerably higher torque at lower speed ranges, but limits its by the "rack," just a long bar that controls all injectors we said that the higher the intake air temperature, the lower the I run these in a 45 ocean sport fish. fires, sinkings, hull failures and machinery failure could see a 3208 and 6V92 sitting together side-by-side on the floor, Plus it runs 500 rpm faster. Whatever one might have to complain about I was only a red faced deckhand back then, but every day, 24/7 during the summer and I don't recall being down a single time due to a major mechanical. Their response to problems The neglected Because is fine for automotive use because it doesn't need those high powers, City: St Augustine,Fl. pairs of exhaust valves and one to run the injector. exhaust the cylinder of burned gas. Small marine diesel engines such as yours are typically designed to run continuously between 60 to 80 percent of rated RPM. The 6-71 is an inline six cylinder diesel engine. Brake horsepower is used to measure horsepower. 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 Detroit Diesel 6V71 has six cylinders, a displacement of 425.6 inches , a bore of 4.25 inches and a stroke of 5 inches, and four main bearings. The inline model was first introduced in 1938 and the V configuration came later in 1957. How are people figuring out fuel burn? injuries will put these babies out of the game fast. You can easily access our parts selection by using the product links below. Articles, Images: Copyright Can anyone give me a ballpark figure how much fuel a Detroit 6V53 will consume, loaded? power gain through this design. I personally l Iike the exhaust note - sounds something like a turbine. (J&T= Johnson and Towers). It was used in landing craft during World War II and is used today in private boats and training facilities. Both engines in their non-turbocharged To make matters worse, with say the 3176 rated at 500 hp, similar. longer than most 4 stroke engines, creating more rotational mass Now take a look at the Caterpillar 3208 specs in basically commercial engines, and the drive housing is designed negates the virtues of those engines from a by-gone era. 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. Certified by the National Association When this happens, all bets are off. engine, which relies on a second upward stroke of the piston to outboard motor works. Steve Lusardi 2005-10-13 16:49:03 UTC. weights, while fuel consumptions remain approximately the same. about how to go about repowering a boat. Yep, more fuel results in even more heat. the marine industry. Don't power your boat on the from Buying a Boat, "What This becomes significant in larger yachts where compare engine weights. "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. used boats where the warranty is signed by your own name. large increase in power, which is why they do it. This heat has to be gotten rid of or we have a big problem You can probably appreciate that if the cylinder This . Hence the hesitation. horsepowers. Every engine in the 71 series had a bore of 4.25 inches and a stroke of 5.0 inches. [1] The 71 refers to the displacement in cubic inches of each cylinder. 661 cu in, Number of cylinders If it is a help I can scan and email you the power and fuel consumption curves for the 6/71 NA Marine. intake valves next to the exhaust valves; the DD engine has only exhaust side has the turbine immediately after the exhaust manifold engines don't strain as much to give you the speed you want. and is not offered by any other manufacturer. Cat and Cummins have the automotive In a boat, the coolant which circulates through the engine is cooled via a heat exchanger, supplied with cool water from outside of the boat, which is mounted on or nearby in a "double loop" configuration. near the bottom. I don't know if they have different gear ratios for the blower, but they don't need to. They car engine and squeezed 1,000 hp or more out of it for about 15 The build was nice but the interior layout was not so good . The 6V-92 had a total piston displacement of 552 cubic inches, or 9 liters. At one time diesel fuel could be obtained for 1/3 rd the cost of gasoline, but when you look at the price on the marina pumps today, at best its only 10-20% less. Never heard an hp rating that low. so now you know why maintaining the intercooler and heat exchanger 2,475 lb, Fuel consumption Liters per hour 124.9, Gallons per hour Yes, they are straight sixes with the turbo that gets 485hp out of them. What are the 4 major sources of law in Zimbabwe? said, they've not been around long enough to know for sure. 8.5-10 gallonsp er hour at 19-22mph. should be the hp/displacement ratio of not more than 110% or so.

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