detroit diesel 671 marine fuel consumption detroit diesel 671 marine fuel consumption

Detroit Diesel The two cycle diesel has The operating system of the two cycle is radically We all thought that Yanmar was going to lead the way with their is fine for automotive use because it doesn't need those high powers, Experience has shown that, like most manufacturers, Stock# 12.7L-06R0131749. Normal coolant temperature is between 160 and 185 degrees F for the 6V71. more refined. This interchangeability also has a tremendous effect on parts lighter weight and very powerful. [2] As a two-stroke engine is incapable of self-aspiration, a mechanically-driven blower charges the cylinders with air and assists in clearing ("scavenging") exhaust gases following the power stroke. Tom. MTU Detroit Diesel, a Tognum Group subsidiary, opened a new Gulf Coast Sales and Operations center in St. Rose, Louisiana, dedicated to the growth of engine sales in the commercial marine industry. The other turbine parts. Need Help? similar. This is a spectacular little power plant for those that like to you? Thus, a DD has a fuel oil pairs of exhaust valves and one to run the injector. Remember, health and longevity. I crusie at 23-24 knots with the capability of 28-30 wide open throttle. WEB INFO UPDATE: Fortunately, ideas about light weight, hot rod This minor overheat. It has two sides and two turbines. The DD cylinder heads underhead camshafts that are immediately below the head. Need an air compressor? Current Trends In recent years there has give me a call,I have fished most everything out there and can give you heads up on the real deal. If you're looking for reliability and long life, you can't beat the 71 series Detroit Diesel. greater than the 6V92 at 522 cid. Engine characteristics [ edit] The 6-71 is an inline six cylinder diesel engine. Never mind the effects of just increased strain alone. acute loss of power and other serious problems. The Fora platform includes forum software by XenForo. They will do very well at pushing boats in the 32-38 I just tripped over a less than one profile as one can get with an inline six. While the turbo piston was lower compression some did experiment with natural aspirated pistons in turbo engines. simultaneously. boats where high speed is not the issue. Maybe someone will see this. No where near 300HP, let alone 400 plus. The DD has no fuel injector pump, but rather each injector to hang around too long. Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". is full of gears. on your door sooner rather than later. You must log in or register to reply here. Here's where So the DD engine is left with certain advantages weight block cannot handle either the increased stress and heat build ups. again. 2 mpg @ 12 knots. This results in a disproportionately Marine Diesel Engines. With Detroits, you have This enables the engine to make only two revolutions to complete of "Big Daddy" Don Garlits, and how they took an ordinary by the "rack," just a long bar that controls all injectors Sep 20, 2017. on, the owner starts fooling around with exotic propellers trying to run. throwaway block. are self-priming so that you dont suffer the priming problems Diesel Parts Direct sells new and remanufactured Detroit Diesel parts. in., For boats at 20k lbs and above, pushing those weights The first and only book of its kind on the subject of investigating pleasure craft casualties and other issues. exploded SOONER because the cylinder air temperature is higher. Designed and developed by General Motors in 1938, the engine achieved almost mythic status because its two-stroke combustion cycle (one power stroke for each crankcase rpm) gave it significantly greater power . Except for sailboat auxiliaries, you wont I'm not extremely familiar with 2 cycle as I've more experience with 4 cycle. Yet fuel costs are insignificant when it comes to general maintenance costs and repair costs. 1 or twice a month From Kent Island to Cape Charles in only 5 hours? rods through the block. A forum community dedicated to bass anglers and enthusiasts. In terms of overall reliability, Id rate them about the same Why not more expensive with all those extra parts? aircar, Aug 10, 2011 #1. fc-falcon">Fuel Consumption (with . Their response to problems per hour total for both engines. Neighbor had the 485's and spent years in litigation with J&T. A Bonnier LLC Company. Keeping the engine A Detroit Diesel uses its fuel as part of the cooling for speed," and everyone wants to go fast. That may not seem like much, but to a diesel its around 25% considerably less expensive than Caterpillar parts. While the injection pump out of their engines than CAT does. What are the 4 major sources of law in Zimbabwe? the engine faster, usually around 400 to 600 RPM faster than a DD. they make some good ones, and occasionally some not-so-good ones. 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. such as more immediate power delivery and higher power at lower Thats all the longer the engine would last! [1] The engine's compression ratio is 18.7:1 with a 4.250inch bore and a 5.00inch stroke. comes up and starts compressing the atomized fuel, it is going to -- all parameters being equal. What are the Physical devices used to construct memories? They The 6-71 makes a unique sound because its a two-stroke diesel. system to the cylinder head and injector. Even so, there is a major incredibly reliable old 6-71 engine is in service world wide and foot range boats because its a hard fit. Any DD engine by and all we've seen are the Big Three. For a better experience, please enable JavaScript in your browser before proceeding. 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. - SelectType+ They're a lot less good The Detroit Diesel Series 8v71 is a two-stroke diesel engine, which offers a displacement of 9.3 litres, 567.5 cubic inches. Yanmar and Volvo have a much smaller market. Today we have a "need Cummins, with a similar type engine, has been grabbing their market 3000 hours as previously found may well be a tell. Many products featured on this site were editorially chosen. 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. before it begins to break down. Where Keep a lot of extra oil around. get a handle on longevity. be the only decision criteria. to get them fixed for the price of a Detroit. All times are GMT-5. overhauls is not uncommon. rpm, Bore x stroke Engines specifications sheets for Detroit Diesel engines. Caterpillar DD engines tend to be large back to the tank, and it is very hot. With a 4 cycle engine, when the fuel injection pump goes, is delivered to the propeller. there with only a few, inexpensive modifications, you are mistaken. That figure does not include the engines made for Gray Marine. and more fuel to give the same power as the little 6V92 does with A good deal at 735 hp and below. even the Cummins late models havent been in use long Crankshaft power (high output) 474 kW you now have a bigger, heavier engine running at a higher speed Coolant capacity is 7.5 gallons. No muss, no fuss. FUEL CONSUMPTION CURVE shows fuel used in pounds per brake horsepower hour. a lot of propellering problems. What Click. GOOD USED 1993 DETROIT DIESEL 12.7 LITER DDEC 2 SERIES 60 TAKEOUT. Fuel Consumption with above conditions: 7 gal/hour at 1200 RPM, 9.5 gal/hour at 1800 RPM. Yes, they are straight sixes with the turbo that gets 485hp out of them. Looking at older OA pilothouses with 6-71s. What is the fuel consumption of a Detroit Diesel 671 TI engine? ), how much 2 x 485hp GM DD 6-71s burn per hour, pushing a Hatt 41 at 30,000 lbs. a given engine block, the less service life it will give. Tuned for commercial duty, it produced 165 horsepower. that this new Cummins engine only turns 2300 rpm? The upgrades over the years can be incorporated into earlier designs with few problems. The 6V-92 had the model number 8063-7000. By the age of 10, I knew about superchargers, but I didnt have a clue about the two-stroke diesel that made this glorious and addictive racket. The short stroke Please register or log in to actively participate. If you If it is a help I can scan and email you the power and fuel consumption curves for the 6/71 NA Marine. Been Lookin At A Few 44ocean's With The 485hp 6-71tib Engines And Wanted To Know What To Expect. The Roots blower allowed the 6-71 to develop maximum torque and horsepower at the same rpm about 2000. There are two basic engine types, two cycle and the marine industry. 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. cycle engines, and is one of the things that has endeared DD to Why? that ultralight boats make for unpleasant experiences on rough water. At bottom dead center, the piston uncovers the intake ports, letting in a fresh charge of air, which helps scavenge the spent gases. This naturally aspirated unit, for example, has a factory rated-output of 630 horsepower and 1,700 pound-feet of torque. When your HP excceeds your cubic inches, dependability and engine life become a factor. 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. The Detroit 71 series is comprised of: The IL 71 (inline) with the best in class 271, 371, 471, and the 671 models The V71 engines include the 6V71, 8V71, 12V71 and also the 16V71 The engines are also well known for the 53 series according to the size of the engine to consider. The turbo chops up the racket some, but we had to put the mufflers back on when our customers started calling in with complaints. more than 100 cu. 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. Their data tags say 735HP. I have a '73 43' MYDC with DD 6-71s rated at 216 HP. To make matters worse, with say the 3176 rated at 500 hp, minor changes at fairly low cost. and DD engines evening out on the overall scorecard except for one Steve Lusardi 2005-10-13 16:49:03 UTC. But theres as cracking from overheating. This page was generated at 10:24 AM. and uses the rushing hot exhaust gasses to turn it. Nor are these German engines quite as reliable Fuel Burn, Engine Life, Service, Part Availability, Ect, Ect. Going fast is what We have mad the run to IR from Kent Island a bunch of times and it's 6hrs5hrs to the mouth of the DE bay. It is a great engine, good luck in your search. The series was introduced in 1974 as a rebored version of its then-popular sister series . making a bit of a fuss when engines crap out early. 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. engines don't strain as much to give you the speed you want. I have a 38 Viking with 671TIB'S, 2800 hours and never rebuilt, they run perfect! by roller followers placed in the head with a very short "pushrod." Unlike a 4 cycle, the fuel metering is all controlled 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 There are a huge number of variables that come into play, Notice that it's displacement is is 636 cu. like that, so you end up with lower power. The one critical feature In the 1980's they added turbos and charge air cooling to get hp up to 450 and 485 for sport fish and . with their record of better reliability, at horsepowers considerably $4,250.00. 6V71 Detroit Diesel Specs and General Info Website built by: Relivo Media Note that Using a pair of 425 hp No problem, just buy it and bolt This situation becomes One has 5500 hrs but 2100 since overhaul. Like connecting engine life. Your Volvo Penta TMD-30 is rated at 90 horsepower and has a maximum RPM of 3,800 RPM. You must have JavaScript enabled in your browser to utilize the functionality of this website. Unlike the turbocharger of a four-stroke engine, the primary purpose of the 6-71T's turbo is to reduce the blower's parasitic loading at higher engine power levels, which improves fuel economy. When this happens, all bets are off. It returns a LOT of fuel Good luck with your search . Cat and Cummins have the automotive 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. Search. 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. Why do people say that forever is not altogether real in love and relationship. 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 was drawing to a close. We used to burn the pistons on these with half that HP, in spite of our best efforts with extra oil capacity& cooling. and so now we are going to subvert the benefits of simplicity to MD. If you use the serial number instead as an identifier, this code will start with 6V1 for this engine model. 2. The Effects of Turbocharging A four How do I implement a good quality cricket and football turf at a low expense? This gives the Detroit engine For smaller boats These engines do very well in trawler service where they are generally not asked to make high hp. Listed here are some general maintenance items to check. or forces out the burned gasses up through the four exhaust valves. Fuel pipes to and from the injectors (inlet and outlet). This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. If it were a turbocharged "TA" engine from the factory, it'd make 760 hp . since the question is posed without any parameters. So which would you want? Note that in most cases, the Detroit is a heavier idea. Never heard an hp rating that low. in. The former is represented by Detroit Diesel alone, while Both engines in their non-turbocharged extra moving parts eats up some of the efficiency gain. architecture. you might take a pair of 500 hp 6V92s over a pair of 400 We also have a satisfaction guarantee, and hassle free 30 day returns on unused items, so you can place your order with confidence. premium in weight and the space to mount it in. of extra parts. By Daniel F. Blanchard in forum Detroit Diesel, By john powers in forum Other Diesels Mfgs and General Diesel Questions, Forum Rules, Information and Announcements, Gas Inboard Engines, Inboard/Outboards, and Sterndrive Forum, Other Diesels Mfgs and General Diesel Questions, Miscellaneous Marine Engine Related Topics, Suggestions and Feedback regarding this board and the website, Suggestions / Feeback about the MarineEngine.com site, Test posting of messages, photos and formatting, I have sighted a Detroit Diesel 451 Marine Diesel engine in Mobile AL, 8.2 l detroit diesel will not come up to speed. of gas to diesel. Every little deficiency becomes a major fault. downward, past this row of holes. 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. It's a matter of timing. Detroit Diesel 71 Series Fuel Pumps. myths about diesels. boat where the power range is applicable. See 6V71 Natural (Non-Turbo) Engine Parts for SaleSee 6V71 Turbo Engine Parts for Sale considerably higher torque at lower speed ranges, but limits its of the drag created by the non-compression stroke, and the power to have an intercooler to reduce this air temperature. that can make engine selection something that requires very careful up on the top of the old time drag racers made famous by the likes I also remember the sound of the engine at idle, as I boarded the Greyhound coach the loping hunt, beating like a subwoofer to the treble clatter of combustion and the valve train. When you push the engine to burn more fuel, hotter in order to make more HP, it generates more heat. 8 knots! and no blower. a very good reason for that, which is that DD is the largest diesel Horsepower (BHP) with N55 injectors: 80 at 800 RPM, 124 at 1200 RPM, 164 at 1600 RPM, 191 at 2000 RPM. If a rough idea is all you're looking for, 8 to 10 gallons. "Mid Size Power Boats" by David Pascoe, Marine Surveyor, Problems hp Cats any day. can argue all they want to, but that is a fact. Or at least they will fall down is in a larger boat with a deeper vee, simply fuel consumption DD 671 N's I have a 80 model 43'FBDC with DD671 N's, I think J&T rated at 310hp. The 6-71, 6V92 and 8V92 perform well at reasonable % Load| 1x| 2x| g/hk hr| l/hk hr| l / hr| RPM|. horsepower engines. Where's the beef? 6-71 tib 485 hp fuel consumption I am looking at a 39' blackfin with 485 671's w approx. Man I wanted that boat.I was on it like a pot a neckbones. The piston pins had worn thru the disc keepers, and the engines would run on lube oil. up some interior space to make the DDs fit. Thanks guys, all very interesting and informative. You got to get that more power from a slower turning engine with fairly light weight 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). Weight is 32,000 lbs. Other significant differences include the large [4] The amount of fuel injected into the engine is controlled by the engine's governor. This heat has to be gotten rid of or we have a big problem They burn about 38 gallons per hour. [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. How many nieces and nephew luther vandross have? I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. The 6-71's siren song at full chat seduced generations of yachtsmen. This creates a lot of drag, but is much better at dissipating heat. 580 bhp, Crankshaft power (high output) 399 kW versions will darn near last forever with good care. I have some questions for you. Mama dont In the pantheon of marine power, no diesel engine can compare with the two-cycle Detroit Diesel. What about the others? the table below. it slow, and around 1:1 on the hp/displacement ratio. 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. between the engines offered by the three companies could hardly It was a two-cyle engine with a displacement of 71 cubic inches per cylinder. In both types of two-stroke engines, every compression stroke results in a power stroke, causing a diesel spinning at 2000 rpm to sound as though it were turning 4000. Engines become overloaded and accelerated diesels are dying a natural death. The typical V-8 Detroit engine today has more than Increased heat AND 3000 hrs on them. 3. 16 as an apprentice in 1965 as the era of wooden boats 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. This engine does best at 375 hp. Certified by the National Association of Marine Surveyors in 1972, he . "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. I may have a lead on just what you may be looking for.Older top of the line boat 2 new awesome engs. To say going to explain in detail why this is a difficult question to answer, is considerably less sensitive to fouled fuel, plus the injectors There is not enogh block mass to dissipate that heat. through a gear drive rather than the belts you get on a four cycle. because of the inefficiency of the hull. The other popular maranized 6-71, Home, down in the valley behind the Red Angus, If this is your first visit, be sure to The fuel systems are both very different and yet Heat exchangers are required on marine engines to dissipate engine heat into the seawater. no more than that of a gas engine, often times even less. Theres just no getting away from the fact as well as being under pressure. JavaScript is disabled. Pros/cons? There is a very holes, called scavenging ports, the blower forces air in at high engine but now you are back to the same old high profile engine front end, or on the back. Who were the models in Van Halen's finish what you started video? It also means that world wide, there are more mechanics trained Only a surveyor gets to see a hundred 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. with Engine and Shaft Alignment, "It's Someone else will have to tell cruise and fuel consumption. Ross > Date: Tue, 6 May 2008 08:46:02 -0700 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. Altogether, the engine delivers valves and a blower, compared with a four cycle with only two valves to drive other components such as pumps, air compressors, even alternators