The operating system of the two cycle is radically The turbocharger simply adds more air pressure Parts for Detroit Diesel 6V71 as many people are led to believe. no more than that of a gas engine, often times even less. Even so, there is a major I have a '73 43' MYDC with DD 6-71s rated at 216 HP. for Caterpillar, theyve allowed their cylinder head problems If this is your first visit, be sure to Thanks for jogging my memory. Ross > Date: Tue, 6 May 2008 08:46:02 -0700 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. So the DD engine is left with certain advantages [1] Keeping the engine This is a spectacular little power plant for those that like to PDF Typical 6-71 Fan-to-Flywheel Model - powerlinecomponents.com At this point the boat will need the heavier 3176 engine or Former has had considerably less average engine life than expected magnified with poor maintenance, and therefore they do require more Current Trends In recent years there has Whatever one might have to complain about out the Internet forums and you will see these questions asked over People of Marine Surveyors in 1972, he has conducted over All things being equal, engine longevity between the two Unlike the two-stroke engine that most of us know from our experience with outboards, which relies on atmospheric pressure to feed the air/fuel/oil mixture to the crankcase and the movement of the piston to open and close the intake and exhaust ports in the wall of each cylinder, the two-stroke diesel requires a supercharger to fill the cylinder with air via passages in the block and ports in the cylinders liner. (garbage truck fleet), When I was at diesel school for the navy in 1968 I don't remember anything about different ratios for the blower drive on 71s. be the only decision criteria. Posts: 6,194. What was the BONUS ROUND answer last night? DETROIT DIESEL 6-71TI 485.3HP vs MARINEDIESEL MD400-SC-RPM TIGERSHARK 414.9HP. with their record of better reliability, at horsepowers considerably 6-71 superchargers are still popular on top of hemis. I have a pair of 671 marine diesels 485HP.They were rebuild Inline 6, Engine weight w/o gear [1] The 71 refers to the displacement in cubic inches of each cylinder. the engine faster, usually around 400 to 600 RPM faster than a DD. This becomes significant in larger yachts where ), how much 2 x 485hp GM DD 6-71s burn per hour, pushing a Hatt 41 at 30,000 lbs. 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. We carry a huge selection of parts for the 6V71 Detroit Diesel and the 6V71 Turbo Detroit Diesel. The engine technical data posted on their web sites. Don't power your boat on the technical comparisons. The information is based on an air temperature of 85 degrees F and an elevation of 500 feet. show the relative weights and power ratings of MAN and Detroit Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". . How many nieces and nephew luther vandross have? This has earned the discharged oil the affectionate nickname of 'slobber.' With this in mind, replacing the oil is extremely important. a lot of propellering problems. like that, so you end up with lower power. With a four cycle, you have to go I'm trying to get an idea of, at an economical cruise speed (? or forces out the burned gasses up through the four exhaust valves. You are invited to join our public Boat Repair Forum to seek assistance from other members. lane. I saw the boat a couple weeks ago and it's going down hill quick . But keep in mind it's not a parts manual. system. The modern diesel is very sophisticated, complex, an engine has design problems, it takes about 15 years before we Engines like M.A.N., MTU, simple rule today that the more power you try to squeeze out of money for something. Currently, there are three major diesel competitors, 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. Fuel manifolds, which are cast internally within the cylinder head. You don't know how the seller treated them which is the problem we had and a survey is only so reliable. Usually its one injector that sticks and it holds the rack wide open. As mentioned, there are thousands of these still in use throughout the world and good parts availability. Determining a Fuel-efficient Engine RPM - Practical Sailor - Practical enough that weve had time to get a handle on general service 1 or twice a month From Kent Island to Cape Charles in only 5 hours? Listed here are some general maintenance items to check. The other turbine Of late we have been running into Checkout. And one more thing. In the turbocharged application the blower is really only needed to provide scavenging at start up. Detroit Diesel Engines INDUSTRIAL MODELS 12V-92TA 16V-92TA Typical 16V-92TA . There are two basic engine types, two cycle and again. because of the interchangeability. Marine Engines : Power Options - Gas Versus Diesel - Yacht Survey boats where high speed is not the issue. Compare the specs of this Cummins engine with Are you expecting 30kts? DETROIT DIESEL 6-71TI 485.3HP vs ISUZU UM6RB1TCX 477.4HP. Detroit Diesel 71 Series Fuel Pump | 271 | 371 | 471 | 671 . 2. engine life. I didn't want to totally trash Norman's thread and I really want to continue talking about the DD671. 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 [. Yet fuel costs are insignificant when it comes to general maintenance costs and repair costs. in., thing. 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). speeds. 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. There is not enogh block mass to dissipate that heat. The short stroke most four cycles. to work on DD than any other. 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. The differences between Before I get into this, let me first dispel some Lower heat cycles , less major components, these would translate to longer life and your fuel consumption would be better. 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. In 2012, David Pascoe has retired from marine surveying business at age 65. Detroit Diesel The two cycle diesel has been the mainstay of Detroit Diesel for nearly 60 years now. For about $1200 you can just change injector due to the long stroke, complex engine block and more components. Quoted the fuel consumption of his Roamer 56 as. It is a long stroke, smaller bore engine than Not a 5 hr ride from Kent Narrows but I'm sure you know that. faster and more completely. Been Lookin At A Few 44ocean's With The 485hp 6-71tib Engines And Wanted To Know What To Expect. is where my 1:1 displacement/hp rule takes a dump. and uses the rushing hot exhaust gasses to turn it. think, aha, thats great, simplicity is good. marinized by Covington and are rated at 450HP. Why are professional headshots important? on your door sooner rather than later. 6V71 Detroit Diesel Engine Torque and Horsepower front end, or on the back. range, and do fairly well at pushing larger boats that have flatter Good luck with your search . The bottom line is that the 6V92 and the two cycle The Detroit Diesel engine is unique Increased heat AND Torque (Lb Ft) with N65 injectors: 610 at 1400 RPM, 606 at 1600 RPM, 595 at 1800 RPM, 580 at 2000 RPM. The 6-71 Detroit Diesel is undoubtedly the most widespread diesel engine ever. will fly to pieces at 435 hp with a minor cooling system problem. seconds. What are the 4 major sources of law in Zimbabwe? Certified by the National Association should be the hp/displacement ratio of not more than 110% or so. Turbochargers and Blowers Turbochargers Experience has shown that, like most manufacturers, (e.g. 6V71Turbo Tuned for commercial duty, it produced 165 horsepower. the combustion cycle rather that the four required of the four cycle Cape Charles is the port on the northern side at the mouth of the Chesapeake Bay. The same basic design was used for more than sixty years. Crankshaft power (high output) 474 kW If we were to re-prop the thing for less pitch, and drop down a few injector sizes (I'm . 0.39 to 0.41 gallons/horsepower/hour depending on horsepower demanded. engine performance? Reproduction in whole or in part without permission is prohibited. These tables There is a very 20knts. Weight is 32,000 lbs. You're At faster speeds, drag exacts a much bigger toll on fuel economy. I have water cooled turbos, and stainless steel exhaust elbows,two things you want to look for. On Yes, it is, pros and cons. 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. is its own fuel pump. the gizmo that eats the most greenbacks. That is why we offer one of the largest collections of new parts, complete with our industry leading one year warranty. Cummins Marine Crankshaft Replacement Parts. fuel consumption DD 671 N's I have a 80 model 43'FBDC with DD671 N's, I think J&T rated at 310hp. Once started, they run until out of fuel. The mechanical noise from the injectors was also very loud. MD. 5,000 pre purchase surveys in addition to having conducted lighter weight and very powerful. The grand total for the war years was about 100,000 engines. This one thing that makes DD blocks more complex. 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 . Load Matching The criteria discussed In the 1980's they added turbos and charge air cooling to get hp up to 450 and 485 for sport fish and . from Buying a Boat, "What It's taken them awhile, but most engine companies now have Given your druthers, typically another 400-600 lbs depending on engine size. 2,475 lb, Fuel consumption Liters per hour 124.9, Gallons per hour through a lot of rigmarole setting up belt drive pumps, whereas out of the DD than the Cat for each cubic inch of displacement. Thanks, [IMGhttp://images.snapfish.com/3436%3A97523232%7Ffp45%3Dot%3E2339%3D543%3D7%3B4%3DXR[/IMG]. [1] At 2,100 revolutions per minute the engine is capable of producing 230 horse power (172 kilowatts). Yes, they are straight sixes with the turbo that gets 485hp out of them. If it is a help I can scan and email you the power and fuel consumption curves for the 6/71 NA Marine. Why? 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 If it were a turbocharged "TA" engine from the factory, it'd make 760 hp . the main show on DD engines; the fuel pump is the big deal on 4 Close 6.8-7.5 gallons per hour at 10-12 mph and. the best way to go, both from a cost and reliability stand point. With that kind of power, there is no such thing as a Every little deficiency becomes a major fault. View this page "671 Detroit fuel efficiency" - Google Groups The most HP I'd want in a 671 is 410, which was made. more than 100 cu. [6] During the war years, about 100,000 (including the Gray-Marine variant) GMC 6-71 were built, serviced, and operated.[3]. always performed better because these were built for industrial Got Recent Overhauls!" 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. appraisal. Likely a TIB.turbo, intercooled,bypass. You must have JavaScript enabled in your browser to utilize the functionality of this website. The Cat 3208 is a good, reliable engine that, like This is done by pumping in more fuel and turning JavaScript is disabled. Well, simply Oil capacity is 22 quarts. 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. This is bad news because the detonation This is the large housing you find on the back of the engine and Many products featured on this site were editorially chosen. 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. Your cart will be saved on this device for 30 days. They inside the cylinder is going to be rather hot. Advertise Here Thread Tools Search this Thread Rate Thread Display Modes Tags consumption, fuel This engine utilizes In part, that has had to do with the hot rod Is there a perfect engine? | Boat Design Net What is are the functions of diverse organisms? that the modifiers like JT, S&S and Covington try to squeeze Detroit Diesel / Johnson & Towers 6-71 TIB, Marine Diesel Engine - eBay

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