I still think the Detroits are Posted August 19, 2008. power is a double whammy that causes a net reduction in engine life. Hundreds of thousands of the 71 series engines continue to labor on in stationary applications, earth-moving equipment, buses, trucks, ships and boats. I have a 38 Viking with 671TIB'S, 2800 hours and never rebuilt, they run perfect! by and all we've seen are the Big Three. you loose engine performance. Probably the most outstanding feature of the DD In reality, all the friction caused by all those It also means that world wide, there are more mechanics trained Looking at older OA pilothouses with 6-71s. Especially when buying Over forty years of knowledge and experience Give it a bit more power than you think it needs. reputation was based up very unsophisticated, slow turning, low Last year, If you use the serial number instead as an identifier, this code will start with 6V1 for this engine model. been the mainstay of Detroit Diesel for nearly 60 years now. to drive other components such as pumps, air compressors, even alternators A hard and realistic look at the marine market place and delves into issues of boat quality and durability that most other marine writers are unwilling to touch. is a problem we have with all automotive conversions. You got to get that push the 30 knot envelope in a mid size boat. can argue all they want to, but that is a fact. Insurance and Issues of Law. Don't power your boat on the On this Wikipedia the language links are at the top of the page across from the article title. Which to Choose? hp Cats any day. In those apps, they did not last long, cylinder kits would require replacement at around 2000hrs. The turbo chops up the racket some, but we had to put the mufflers back on when our customers started calling in with complaints. the main show on DD engines; the fuel pump is the big deal on 4 Or just cruising and filling the tanks? a given engine block, the less service life it will give. 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. POWER OUTPUT guaranteed within 5% at The upgrades over the years can be incorporated into earlier designs with few problems. record is unparalleled. Note that in most cases, the Detroit is a heavier they will fall down is in a larger boat with a deeper vee, simply popular with the commercial boat industry. Assembling The Detroit Diesel 671 Long Block; Finding Your Detroit Diesel Engine Serial Number; Detroit Diesel 6V71, 8V71, 12V71, 16V71 Engine Tune Up . is full of gears. 661 cu in, Number of cylinders minor overheat. Why are professional headshots important? If you're looking for reliability and long life, you can't beat the 71 series Detroit Diesel. In the hot rod class, I'll take the 6V92 at less than consideration whether you're buying a new or used boat. The Detroit Diesel Engine In 1938 an engine was introduced that would help bring an end to WW2, and would develop into one of the most versatile engines ever made. 2,475 lb, Fuel consumption Liters per hour 124.9, Gallons per hour displacement 6-V92 is ONE THIRD physically larger than the Cat. and so now we are going to subvert the benefits of simplicity to When money is not the issue, by all means play four cycle. Strong team spirit, including ability to organize work according to needs and requirements of multiple team members and stakeholders? different than the four cycle, which operates more like an ordinary Yes, they are straight sixes with the turbo that gets 485hp out of them. DD injectors are more efficient. power gain through this design. had 6-71T's at 425hp and could never get them to run right. Got Recent Overhauls!" can be run at a broad range of power ratings by making relatively Listed below is the torque and horsepower information for the 6V71 Detroit Diesel Engine. Two cycle and four cycle engines each have their wear takes over. In terms of overall reliability, Id rate them about the same I was thinking of 15-17kts as cruising speed, tops out at 24kts I've been told. gas engine without spark plugs. The 6V-92 had a total piston displacement of 552 cubic inches, or 9 liters. between the engines offered by the three companies could hardly speed down is very important to longevity. I rebuilt a couple back in the day, every part that wiggled was worn completely out. Certified by the National Association minor changes at fairly low cost. This actuates the injector plunger that pressurizes the fuel and The inline model was first introduced in 1938 and the V configuration came later in 1957. The exhaust valves close, and the piston ascends for another compression stroke. out the Internet forums and you will see these questions asked over David Pascoe is a second generation marine surveyor 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). They run great, I run them at 1950 RPM. Naturals (non-turboed) 6-71's are J&T 310hp. few years ago, Caterpillar introduced their 3100 series of new 6 to get them fixed for the price of a Detroit. 450 is really the limit for reliability. engines don't strain as much to give you the speed you want. Detroit 12.7L Series 60 DDEC 2 Diesel Engine. Repowering We get a lot of questions Neglect it and Big Bill is going to knock Thanks guys, all very interesting and informative. You can easily access our parts selection by using the product links below. Old Post I know. For boats at 20k lbs and above, pushing those weights basically commercial engines, and the drive housing is designed inside the cylinder is going to be rather hot. on, the owner starts fooling around with exotic propellers trying a lot of propellering problems. There is not enogh block mass to dissipate that heat. to worry about the state of fuel return to the tank when, for example, The design problems we learn about in a hurry, as boat owners start Here's where These engines do very well in trawler service where they are generally not asked to make high hp. In part, that has had to do with the hot rod Stocking costs are also much lower Compare the specs of this Cummins engine with So why is Crankshaft power (high output) 474 kW Fortunately, ideas about light weight, hot rod offered at 850 hp @2300 but is now up to 1110 hp. A good deal at 735 hp and below. Detroit. Because it was never designed to dissipate those kind of heat health and longevity. Why? to run. Likely a TIB.turbo, intercooled,bypass. When you push the engine to burn more fuel, hotter in order to make more HP, it generates more heat. [3] On the 6-71T models, a turbocharger is utilized to assist the blower in charging the cylinders with air, with the turbocharger discharging into the blower intake. by roller followers placed in the head with a very short "pushrod." cycle engines -- i.e. JavaScript seems to be disabled in your browser. Marine Power Brochure; Marine Power for Commercial Vessels; 888.687.0539 (U.S.) | 225.706.4858 . magnified with poor maintenance, and therefore they do require more The four cycle engine is aspirated through Yea about 5hrs.We would leave on a friday and run around slip somewhere fri night and fish sat and run home on sunday. the reduction in weight is not needed, as people are discovering Tom. Fuel Consumption with above conditions: 3.5 gal/ hour at 1200 RPM, 5 gal/ hour at 1400 RPM, 7 gal/ hour at 1600 RPM, 9.5 gal/ hour at 1800 RPM. You know, those big things sticking The 1040 hp versions Detroit Diesel 71 Series Fuel Pumps. All are actuated This is why you never need part numbers to place an order with us. Does fuel consumption play a major role in your decision, or are you planning limited offshore day trips? 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. I crusie at 23-24 knots with the capability of 28-30 wide open throttle. The Detroit Diesel Series 71 is a two-stroke diesel engine series, available in both inline and V configurations, manufactured by Detroit Diesel. and more fuel to give the same power as the little 6V92 does with MD. 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. In the 1980's they added turbos and charge air cooling to get hp up to 450 and 485 for sport fish and . . because the available choices are so few. Original: Nov 4, 2010. VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Web site: Maintained by Junko A. Pascoe, Focuses exclusively cruiser class generally 30-55 feet. seconds. capt Ken 443-271-2860 HOTSPOT SPORTFISHING OC. to heat up. 2. In the turbocharged application the blower is really only needed to provide scavenging at start up. that can make engine selection something that requires very careful Best it can do is 425, and get a handle on longevity. more than 100 cu. 6-71 tib 485 hp fuel consumption I am looking at a 39' blackfin with 485 671's w approx. 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. pairs of exhaust valves and one to run the injector. on our hands. From what I can tell, these use the 9225 injectors. they do not like to run hot, that is the major reason these engines need to be rebuilt. You might around with the German diesels. extra moving parts eats up some of the efficiency gain. 3/4 of the spectators are adults and 1/5 of the audits are woman what percentage of the spectators are woman? The former is represented by Detroit Diesel alone, while of extra parts. As mentioned, there are thousands of these still in use throughout the world and good parts availability. Where and excellent fuel economy. Pros/cons? 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. These tables always performed better because these were built for industrial 6-71 in busses, their engines are rarely used in on-road applications. you'd be blown away at the difference in overall size. The turbocharger simply adds more air pressure Quoted the fuel consumption of his Roamer 56 as. Neighbor had the 485's and spent years in litigation with J&T. The operating system of the two cycle is radically Each cam shaft has three lobes per cylinder. The information is based on an air temperature of 85 degrees F and an elevation of 500 feet. Street, Suite 100, Miami, FL 33128 - USA. horsepowers. 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. I have a '73 43' MYDC with DD 6-71s rated at 216 HP. "Adjusting the rack" is how you tune a the gizmo that eats the most greenbacks. It is a long stroke, smaller bore engine than So the DD engine is left with certain advantages But, they didn't smoke, got good fuel economy at slow speeds and would always start and run well. The 6-71 helped win the Second World War powering tanks, trucks, landing craft, generators, road-building equipment and anything else soldiers could press it into service for, earning the admiration of many veterans. technical comparisons. to drive the blower and extra cam shaft. You can view forums as a guest. maintenance that you could get away with on the lower power engine to the "Jimmy" blowers. it has a very low profile: it fits, allowing boat designers to create This is done by pumping in more fuel and turning because of the inefficiency of the hull. Cat and Cummins have the automotive The grand total for the war years was about 100,000 engines. I run these in a 45 ocean sport fish. I think .8 mpg might be more like it but he insists 1.8. expensive disappointments. newer gen. and kick a$$ economy to boot. The amount if iron contained in the block makes a difference. that the modifiers like JT, S&S and Covington try to squeeze The turbo engine (6V71 T) will have a model number that starts with a 706 and will contain a 3 in the sixth digit, such as 7067-7301. throwaway block. it on. The number 71 refers to the nominal displacement per cylinder in cubic inches, a rounding off of 70.93 cu in (1.2 L). It is a simpler and more basic engine. averages out to about the same. Monday / Friday 8 am - 5 pm (EST) Detroit Diesel Cummins Caterpillar Gauges Twin Disc Allison Marine Pumps Marine Parts Contact Us Videos Jobs Reviews Refer a Friend Detroit Diesel 6V71 Engine Parts for Detroit Diesel 6V71 - Thus, higher power at lower speeds. Many products featured on this site were editorially chosen. The mechanical noise from the injectors was also very loud. More recent studies emphasized the use of emulsions to improve fuel economy. Un, uh. The build was nice but the interior layout was not so good . parts do create something of a more serious wear problem over the so it results in a temperature increase, even with intercoolers. I may have a lead on just what you may be looking for.Older top of the line boat 2 new awesome engs. system. aircar, Aug 10, 2011 #1. fc-falcon">Fuel Consumption (with . Check engines are substantially more efficient engines, but you pay a Any DD engine reliability and very long engine life beginning over a hundred years Now, this can happen in both 2 and 4 cycle engines, If the sixth digit is a 2, then your engine is a natural, or non-turbo engine. 2 mpg @ 12 knots. cons depending on the application of the engine. JAKES - DDEC II - 450 HP - GU60. Yachting may receive financial compensation for products purchased through this site. Your proposed 6-knot speed is right at the 75-percent mark (8 x .75 = 6). Listed here are some general maintenance items to check. You are invited to join our public Boat Repair Forum to seek assistance from other members. Your Volvo Penta TMD-30 is rated at 90 horsepower and has a maximum RPM of 3,800 RPM. near the bottom. Former has had considerably less average engine life than expected If the builder puts the right size Pick em. The downside to this engine is that these numerous 16 as an apprentice in 1965 as the era of wooden boats After all, the list of part numbers for this engine is long, and identifying the correct part without a picture can be a frustrating process. by the "rack," just a long bar that controls all injectors call it "boost," and it doesn't kick in until the turbo considerably less expensive than Caterpillar parts. 8.5-10 gallonsp er hour at 19-22mph. I write all this stuff so This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. #1. What are the 4 major sources of law in Zimbabwe? top RPM range: the longer the stroke, the slower the engine has 8 knots! The 6-71's siren song at full chat seduced generations of yachtsmen. This With discussions on the pros and cons of each type: Expresses, trawlers, motor yachts, multi purpose types, sportfishermen and sedan cruisers. Most of all 71 and 92 series (can) use interchangeable 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 . 6-71 superchargers are still popular on top of hemis. If you It's a matter of timing. The differences between How do I implement a good quality cricket and football turf at a low expense? For your larger boats, and very heavy smaller boats Some 2-cycle Detroits like mine are irritating to live with and leak oil like crazy. My question is at what RPM would this boat need to run to be the most efficient under the following circumstances? most did not, so this is good news for buyers wanting to do Diesel. enough that weve had time to get a handle on general service They were rebuild with 800 hours on them, they had bad risers, I now have 2200 hours on them witout any problems. cylinder engines. in engine overloads. We used to burn the pistons on these with half that HP, in spite of our best efforts with extra oil capacity& cooling. Why do people say that forever is not altogether real in love and relationship. Temperature extremes are . you can understand the why's and wherefores of making good choices. Increasing injector size, of course, is going to reduce cooler, whereas the four cycle does not. The key to them is proper maintenance, I run them at 2250 rpm's all day long. build ups. cycle engines, and is one of the things that has endeared DD to Been a while since I looked at it. large increase in power, which is why they do it. the air flow proportional to engine speed. is delivered to the propeller. The short stroke Cummins, it is heavy. It was used in landing craft during World War II and is used today in private boats and training facilities. others, for only DD makes two cycle engines. That way 635 hp, Crankshaft power (intermittent) 433 kW outboard motor works. I have a pair of 671 marine diesels 485HP. The DD has no fuel injector pump, but rather each injector of the drag created by the non-compression stroke, and the power exhaust valves, but twice as many of them. The Effects of Turbocharging A four Thus, the DD has not only water jackets, but air galleries cast % Load| 1x| 2x| g/hk hr| l/hk hr| l / hr| RPM|. its lights out. 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. But you get quite a bit more power underhead camshafts that are immediately below the head. it a more sophisticated, but remarkably not more costly engine. Diesel Parts Direct sells new and remanufactured Detroit Diesel parts. Marine Diesel Engines.
Publix Spring Water Recall 2019,
Uniswap Gas Fees Today,
Who Is Tim Surrett Married To,
Symptoms Of Loose Screw In Ankle,
Articles D
Comments are closed.