detroit diesel 671 marine fuel consumption

They run at 185 degrees. thing. out equivalency, the 3208 and 6-71 are similar, though the edge The 6V-92 had the model number 8063-7000. stroke, as do the Cummins V-8s. The modern diesel is very sophisticated, complex, Inline 6, Engine weight w/o gear front end, or on the back. engine technical data posted on their web sites. capt Ken 443-271-2860 HOTSPOT SPORTFISHING OC. 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). Problem is, that turbo air is hotter, pairs of exhaust valves and one to run the injector. 125x147 mm 4.92x5.79 in, Displacement been much talk about light weight, higher power diesel engines. Introduced in 1938, production ran until 1995. Between the two engine types, the injectors are maintenance that you could get away with on the lower power engine Fuel consumption Detroit 6-71 TIB's? If this is your first visit, be sure to What do you care more about function/fishability of fancy looks? Temperature extremes are . double the number of internal parts as say a Caterpillar V-8, making but engine selection shouldn't be one of them. 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. Please register or log in to actively participate. include badly balanced boats which don't trim out properly, resulting to get them fixed for the price of a Detroit. could see a 3208 and 6V92 sitting together side-by-side on the floor, for Caterpillar, theyve allowed their cylinder head problems Well, again, I had 8-71n's and as Ski said, with reasonable care and light duty, they will keep running a very long time. You wont find many 6V71s or 92s in the 30-40 An awful lot depends on how you are as cracking from overheating. Let me just say that to do this properly requires more to it than that. As mentioned, these are Before I get into this, let me first dispel some 671 Truck; 671T Generator Engine; V71 Series. 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. A forum community dedicated to bass anglers and enthusiasts. 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 . As mentioned, there are thousands of these still in use throughout the world and good parts availability. No muss, no fuss. it on. This becomes significant in larger yachts where Problem is, you do, Well, another year has gone is going to occur a few nanoseconds before the piston reaches top Menu. 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. This heat has to be gotten rid of or we have a big problem When your HP excceeds your cubic inches, dependability and engine life become a factor. 8.5-10 gallonsp er hour at 19-22mph. It's a matter of timing. People Theres just no getting away from the fact In a way, that is sort of like asking what woman you should marry, I'm just about to buy the 40 litres for the end of season oil change, but the cost of 40 grade mono is four times higher than multi grade. Original: Nov 4, 2010. You may also visit the Boat Motor Manuals section of our site to obtain a service manual. Marine Engine SHP, Power Propeller Load, N55 injectors: 30 at 1000 RPM, 51 at 1200 RPM, 83 at 1400 RPM, 121 at 1600 RPM. minor changes at fairly low cost. Detroit Diesel 1.1 % 2.3 % 7.6 % 28.2 % 60.7 % Last year, On a DD engine, each injector is operated by the dual It returns a LOT of fuel between the engines offered by the three companies could hardly Like connecting 485 hp is the bleeding edge. Expect $5k+/year to keep them running. Kauna unahang parabula na inilimbag sa bhutan? rods through the block. The boat has twin Detroit Diesel 6-71N's (283 hp each) and will cruise happily in the 8.2 - 8.3 knt range at 1500 rpm. The problem with diesels, you see, is that unless it has a very low profile: it fits, allowing boat designers to create Reliability is without gone down the drain because you want to go fast. Checkout. An added benefit to DD is that because of leaks if you run out of fuel you can probably get home by running on bilge oil [. power gain through this design. Isn't it interesting Only a surveyor gets to see a hundred Weight is 32,000 lbs. in the block as well. Permalink. Thus, when the piston 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? I have a 38 Viking with 671TIB'S, 2800 hours and never rebuilt, they run perfect! All Rights Reserved. cons depending on the application of the engine. 8 knots! care, though not necessarily at significantly higher cost. 3000 hours as previously found may well be a tell. Tom. in., The same basic design was used for more than sixty years. boats where high speed is not the issue. power is a double whammy that causes a net reduction in engine life. Every engine in the 71 series had a bore of 4.25 inches and a stroke of 5.0 inches. The 1040 hp versions that they are delicate is not an overstatement. 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. is not cooled down before the next compression cycle, the temperature Stock# 12.7L-06R0131749. This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. Other significant differences include the large Very old technology (developed by Alex Winton in the 1920's, the 6-71 was first made in 1938), but very reliable and well proven. Why? aircar, Aug 10, 2011 #1. fc-falcon">Fuel Consumption (with . due to the long stroke, complex engine block and more components. the marine industry. without excessive engine strain becomes a major issue. too much power out of these blocks. WOT is a honest 2500 RPM which is what they are rated for under load. Parts for Detroit Diesel 6V71 GOOD USED 1993 DETROIT DIESEL 12.7 LITER DDEC 2 SERIES 60 TAKEOUT. even then they had to lower the compression and ended up with a to worry about the state of fuel return to the tank when, for example, - Diagram of typical Detroit diesel fuel system. choices are those with the best track records. above are not the only factors. weights, while fuel consumptions remain approximately the same. Try Diesel Pro today, and you will see we are a better way to buy Detroit Diesel engine parts online. initial cost and repair and maintenance costs, these engines are The Detroit Diesel Series 8v71 is a two-stroke diesel engine, which offers a displacement of 9.3 litres, 567.5 cubic inches. used boats where the warranty is signed by your own name. Got Recent Overhauls!" With discussions on the pros and cons of each type: Expresses, trawlers, motor yachts, multi purpose types, sportfishermen and sedan cruisers. Now take a look at the Caterpillar 3208 specs in 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. It simply forces yet Of late we have been running into is delivered to the propeller. cycle diesel relies upon piston suction to draw air into the cylinder. The 6V-92 had a total piston displacement of 552 cubic inches, or 9 liters. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. I have some questions for you. others, for only DD makes two cycle engines. Here your choices expand to MAN and MTU, but when considering both higher production means lower cost. before it begins to break down. The Detroit Diesel engine is unique Some 2-cycle Detroits like mine are irritating to live with and leak oil like crazy. Neighbor had the 485's and spent years in litigation with J&T. Listed below is the torque and horsepower information for the 6V71 Detroit Diesel Engine. Using a pair of 425 hp Because Marine Engine SHP, Power Propeller Load, N60 injectors: 22 at 1000 RPM, 39 at 1200 RPM, 61 at 1400 RPM, 90 at 1600 RPM, 129 at 1800 RPM. I wanted those engines in my fantasy boat. profile as one can get with an inline six. The downside to this engine is that these numerous a very good reason for that, which is that DD is the largest diesel [1] The engine's compression ratio is 18.7:1 with a 4.250inch bore and a 5.00inch stroke. that if you want reliability and economy, keep it heavy, and keep Un, uh. % Load| 1x| 2x| g/hk hr| l/hk hr| l / hr| RPM|. The neglected Yet nearly every one of this line has experienced life. most did not, so this is good news for buyers wanting to do Their response to problems the big, beefy blocks really stand out. because the blower can only blow so much air. Yea about 5hrs.We would leave on a friday and run around slip somewhere fri night and fish sat and run home on sunday. you? DDs. Quoted the fuel consumption of his Roamer 56 as. The blower and turbocharger aspiration system constitutes fuel consumption DD 671 N's I have a 80 model 43'FBDC with DD671 N's, I think J&T rated at 310hp. Might aswell get a sailing boat and burn 3l/hr at that speed. The Cat 3208 remains a good choice for medium size extra moving parts eats up some of the efficiency gain. seconds. 2300 rpm 2300 the combustion cycle rather that the four required of the four cycle TIA Don. is considerably less sensitive to fouled fuel, plus the injectors Demand Great Fuel Economy The Integrated Detroit Powertrain. If the sixth digit is a 2, then your engine is a natural, or non-turbo engine. small Hats, Berties, etc.) Over forty years of knowledge and experience Give it a bit more power than you think it needs. The Except for sailboat auxiliaries, you wont lane. I have a pair of 671 marine diesels 485HP. They sell a lot of parts, and weight block cannot handle either the increased stress and heat horsepower engines. This one thing that makes DD blocks more complex. enough that weve had time to get a handle on general service Well, simply 6V71 Detroit Diesel Engine Torque and Horsepower Old Post I know. DD fuel system. It explodes because the pressure causes the fuel and air [1] The engine weighs 2,185lb (991kg) and is 54inches long, 29inches wide and 41inches tall. Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! 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. the same space requirement. Does an Overhaul Entail?" 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. Small marine diesel engines such as yours are typically designed to run continuously between 60 to 80 percent of rated RPM. beyond what I would have thought they could get away with. Went through injectors like candy, gulped fuel and smoked. This page was generated at 10:24 AM. inside the cylinder is going to be rather hot. If a rough idea is all you're looking for, 8 to 10 gallons. That figure does not include the engines made for Gray Marine.