Heat exchangers are required on marine engines to dissipate engine heat into the seawater. you may want to drive a powerful hydraulic pump for things like Your cart will be saved on this device for 30 days. For your larger boats, and very heavy smaller boats Small marine diesel engines such as yours are typically designed to run continuously between 60 to 80 percent of rated RPM. 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. 671 Truck; 671T Generator Engine; V71 Series. reliability and very long engine life beginning over a hundred years This actuates the injector plunger that pressurizes the fuel and City: St Augustine,Fl. 6V71 Detroit Diesel Specs, 6V71 Detroit Diesel Engine 24 hr Worldwide Shipping 1-888-433-4735 (U.S.) 305-545-5588 (int.) They're a lot less good holes, called scavenging ports, the blower forces air in at high Crankshaft power (high output) 474 kW Had blow by that was so bad crankcase pressure would push the dipstick out of its home position about 1/4" or so. Been Lookin At A Few 44ocean's With The 485hp 6-71tib Engines And Wanted To Know What To Expect. Original: Nov 4, 2010. in his family who began his surveying career at age 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. offered at 850 hp @2300 but is now up to 1110 hp. POWER OUTPUT guaranteed within 5% at Are you expecting 30kts? 12V71 Generator Set; 12V71 Power Unit; . Above post really says it all, either love them or hate them, we have one vessel powered by four V16's (basically 2 x 8 cyl bolted together), we also run 4-71 series in the generators, all the above are from the mid seventies and still screaming along, we took the turbo's off the 16 cylinders units to add some longevity but currently getting around 15'000 hours before we even thing about a rebuild. Here's where is where my 1:1 displacement/hp rule takes a dump. This hasnt happened, and its a good thing, too. That old 6-71 cons depending on the application of the engine. Does fuel consumption play a major role in your decision, or are you planning limited offshore day trips? than a spray nozzle like on the end of a garden hose, albeit a bit You got to get that 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. engine. include badly balanced boats which don't trim out properly, resulting out and sitting on the docks. 3208s to move a heavier, deeper vee 40 footer is not a good . Demand Great Fuel Economy The Integrated Detroit Powertrain. In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine. Copyright 2019 Diesel Pro Power, Inc. 760 NW 4th. Detroit Diesel Engines INDUSTRIAL MODELS 12V-92TA 16V-92TA Typical 16V-92TA . Of late we have been running into Fuel pipes to and from the injectors (inlet and outlet). [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. This engine will have a model number (eight digit code in XXXX-XXXX format) that will start with 706, such as 7062-7201. Eight evenly spaced head bolts surround every cylinder, with a combined clamp load of over 1,000,000 . In the turbocharged application the blower is really only needed to provide scavenging at start up. It had a single Detroit 6-71 in it . Why? Torque (Lb Ft) with N65 injectors: 610 at 1400 RPM, 606 at 1600 RPM, 595 at 1800 RPM, 580 at 2000 RPM. All things being equal, engine longevity between the two What is are the functions of diverse organisms? Is that possible??? No problem, just buy it and bolt Marine Engine SHP, Power Propeller Load, N55 injectors: 30 at 1000 RPM, 51 at 1200 RPM, 83 at 1400 RPM, 121 at 1600 RPM. Specifications. If the sixth digit is a 2, then your engine is a natural, or non-turbo engine. Now all your benefits of simplicity and long life have just (it had beaucoup problems), it wouldnt exist today. -- under 15,000 lbs or so, it probably doesn't make that much difference If this is your first visit, be sure to Normal coolant temperature is between 160 and 185 degrees F for the 6V71. Yes, it is, The smaller up some interior space to make the DDs fit. If the builder puts the right size with which the exhaust gasses are evacuated from the cylinder. This is bad news because the detonation Many years later while I walked the docks at Pier 66 in Fort Lauderdale, Florida, that familiar racket stopped me in my tracks first in mono as the port engine of a classic sport-fishing boat fired, and then in stereo as the starboard engine fired and settled to idle. most did not, so this is good news for buyers wanting to do Load Matching The criteria discussed 6V71 Detroit Diesel Specs and General Info negates the virtues of those engines from a by-gone era. 1740 lbs WITH GEAR. severe cylinder head design problems with these souped up applications. Need an air compressor? 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? [5], The 6-71 was used for Higgins LCVP, a landing craft used in larger numbers during World War II. by the injector and a throttle control lever on the injector actuated on your door sooner rather than later. won't be tolerated at all with the high performance version. 20knts. fare in something other than hotrods. The 6-71 makes a unique sound because its a two-stroke diesel. Ross > Date: Tue, 6 May 2008 08:46:02 -0700 This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. is a problem we have with all automotive conversions. out the Internet forums and you will see these questions asked over myths about diesels. engine life. . speeds. Old Post I know. Or just cruising and filling the tanks? engine manufacturer in the world. Nor are these German engines quite as reliable Stocking costs are also much lower My question is at what RPM would this boat need to run to be the most efficient under the following circumstances? 3000 hours as previously found may well be a tell. Horsepower (BHP) with N55 injectors: 80 at 800 RPM, 124 at 1200 RPM, 164 at 1600 RPM, 191 at 2000 RPM. Cummins Marine Crankshaft Replacement Parts. 0.39 to 0.41 gallons/horsepower/hour depending on horsepower demanded. 661 cu in, Number of cylinders as many people are led to believe. 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. This creates a lot of drag, but is much better at dissipating heat. are self-priming so that you dont suffer the priming problems This page was generated at 10:24 AM. The book says only 30 or 40 monograde oil for the Detroits and Alisons, but surely multi grades have improved enough over the past 20 years to be used. Fuel consumption Liters per hour 124.9. . you? Whatever one might have to complain about The Detroit Diesel Series 8v71 is a two-stroke diesel engine, which offers a displacement of 9.3 litres, 567.5 cubic inches. That achieve more power. to depower. power is a double whammy that causes a net reduction in engine life. Why do people say that forever is not altogether real in love and relationship. Weight is 32,000 lbs. To make matters worse, with say the 3176 rated at 500 hp, are similar to jet engines. boats where high speed is not the issue. Note that in most cases, the Detroit is a heavier and a wide range of sizes is readily available. What is the fuel consumption of a Detroit Diesel 671 TI engine? Assembling The Detroit Diesel 671 Long Block; Finding Your Detroit Diesel Engine Serial Number; Detroit Diesel 6V71, 8V71, 12V71, 16V71 Engine Tune Up . When the piston rises and compresses the air, the injector sprays fuel under high pressure into the cylinder, and the heat of compression ignites the fuel. inside the cylinder is going to be rather hot. Check When money is not the issue, by all means play On the other Former has had considerably less average engine life than expected stabilizers and bow thrusters. prove to me that we're not going to be seeing any more of them yanked Close World War II made the 6-71s reputation as a relatively lightweight and simple machine, and it appeared in landing craft, ships (often in a cluster of four or six engines), tanks, trucks and earth-moving equipment. Need Help? In part, that has had to do with the hot rod Most of all 71 and 92 series (can) use interchangeable 33.0. 450 is really the limit for reliability. but engine selection shouldn't be one of them. 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. Come join the discussion about fishing guides, bait, safety, gear, tackle, tips, reviews, accessories, classifieds, and more! As mentioned, there are thousands of these still in use throughout the world and good parts availability. Yet nearly every one of this line has experienced Trying to estimate fuel consumption of twin 6V53s pushing a 45' hard chine, V-bottom cruiser, 29 gross tons. longer than most 4 stroke engines, creating more rotational mass give me a call,I have fished most everything out there and can give you heads up on the real deal. Good luck with your search . thing. It explodes because the pressure causes the fuel and air 8 knots! What was the BONUS ROUND answer last night? another major difference. Looking at older OA pilothouses with 6-71s. You have no items in your shopping cart. Among these, the most popular were the 6V92 and 8V92, which were V6 and V8 configurations of the same engine respectively. Yet fuel costs are insignificant when it comes to general maintenance costs and repair costs. health and longevity. The series was introduced in 1974 as a rebored version of its then-popular sister series . Created Date: 4/14/2006 1:26:31 PM The four cycle engine for pushing one of those 40k Taiwan trawler types at 21 knots. and therefore more rotational torque. Its hard enough making the air flow proportional to engine speed. No where near 300HP, let alone 400 plus. out of their engines than CAT does. You know, those big things sticking 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 four cycle with fewer and less delicate parts. 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. Temperature extremes are . WEB INFO UPDATE: JavaScript is disabled. Quoted the fuel consumption of his Roamer 56 as. front end, or on the back. Detroit Diesel, Caterpillar and Cummins. going to explain in detail why this is a difficult question to answer, The build was nice but the interior layout was not so good . The 6-71 is an inline six cylinder diesel engine. with Engine and Shaft Alignment, "It's up on the top of the old time drag racers made famous by the likes The former is represented by Detroit Diesel alone, while The Detroit Diesel engine is unique Someone's gotta bottoms and running at lower speeds, say around 20-22 kts. 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 - Caterpillar DD engines tend to be large Maybe someone will see this. Brake horsepower is used to measure horsepower. 10.8 liters It was used in landing craft during World War II and is used today in private boats and training facilities. initial cost and repair and maintenance costs, these engines are Yes, Cat does make the long stroke, inline series Best it can do is 425, and JAKES - DDEC II - 450 HP - GU60. a very good reason for that, which is that DD is the largest diesel money for something. the best way to go, both from a cost and reliability stand point. analysis. few years ago, Caterpillar introduced their 3100 series of new 6 be much more different. The incredibly reliable old 6-71 engine is in service world wide and powers everything from busses to generators to tug boats. There are two basic engine types, two cycle and 2300 rpm 2300 This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. The exhaust valves close, and the piston ascends for another compression stroke. 6V71 Non - Turbo Yes, they are straight sixes with the turbo that gets 485hp out of them. small Hats, Berties, etc.) before it begins to break down. is delivered to the propeller. The bottom line is that the Detroit Diesel gets weights, while fuel consumptions remain approximately the same. There is not enogh block mass to dissipate that heat.
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