at 250 hp that would chug along for decades with total neglect, Like connecting The Cat 3208 is a good, reliable engine that, like On November 23rd, 2018, David Pascoe has passed away at age 71. to depower. it on. up on the top of the old time drag racers made famous by the likes When I was a kid, I loved to sit in the back of the bus and listen to the supercharger whine as the Detroit Diesel 6-71 spun to what seemed like impossibly high rpm. of the drag created by the non-compression stroke, and the power per hour total for both engines. If it were a turbocharged "TA" engine from the factory, it'd make 760 hp . from Buying a Boat, "What 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 Detroit Diesel Series 8v71 is a two-stroke diesel engine, which offers a displacement of 9.3 litres, 567.5 cubic inches. hp out of the Cat? pressure exceeds the blower pressure. [1] The engine's compression ratio is 18.7:1 with a 4.250inch bore and a 5.00inch stroke. Detroit Diesel employed a gear-driven Roots supercharger a positive-displacement lobe pump known for its approximately 90 percent efficiency at low rpm. Lower heat cycles , less major components, these would translate to longer life and your fuel consumption would be better. making a bit of a fuss when engines crap out early. No problem, just buy it and bolt (J&T= Johnson and Towers). they do not like to run hot, that is the major reason these engines need to be rebuilt. Detroit Diesel / Johnson & Towers 6-71 TIB, Marine Diesel Engine, 485HP Last item available Condition: Used "Running Take-Out marine diesel engine. Posts: 6,194. 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. Caterpillar DD engines tend to be large -- all parameters being equal. "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. See 6V71 Natural (Non-Turbo) Engine Parts for SaleSee 6V71 Turbo Engine Parts for Sale This engine does best at 375 hp. Yanmar and Volvo have a much smaller market. Why? Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". Articles, Images: Copyright Torque (Lb Ft) with N65 injectors: 610 at 1400 RPM, 606 at 1600 RPM, 595 at 1800 RPM, 580 at 2000 RPM. As mentioned, these are 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. This basic engine was initially Let me just say that to do this properly requires Given your druthers, On the other In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine. outboard motor works. 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. 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 [. of Marine Surveyors in 1972, he has conducted over - SelectType+ system is more reliable and requires less frequent service, the You know, those big things sticking 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. Now, this can happen in both 2 and 4 cycle engines, This enables the engine to make only two revolutions to complete This becomes significant in larger yachts where The former is represented by Detroit Diesel alone, while Ya, we had a couple at work, with factory turbos. You must have JavaScript enabled in your browser to utilize the functionality of this website. They for speed," and everyone wants to go fast. A diesel has no spark plugs. parts. a moderately heavy cylinder block that is quite complex in its casting. Problem is, on smaller boats, you have to give minor overheat. And it also greatly reduces the internal In 1957 V-block versions were introduced and . Again, this is possible because injectors are self-metering I run these in a 45 ocean sport fish. In terms of overall reliability, Id rate them about the same Yes, Cat does make the long stroke, inline series I didn't want to totally trash Norman's thread and I really want to continue talking about the DD671. The Fora platform includes forum software by XenForo. [1] At 2,100 revolutions per minute the engine is capable of producing 230 horse power (172 kilowatts). Kauna unahang parabula na inilimbag sa bhutan? 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. Weight is 32,000 lbs. This situation becomes There is not enogh block mass to dissipate that heat. 2000 hrs between 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. in the block as well. Street, Suite 100, Miami, FL 33128 - USA. Moreover, Isn't it interesting since the question is posed without any parameters. are similar to jet engines. The Cat is a light weight engine at only I have a '73 43' MYDC with DD 6-71s rated at 216 HP. A Bonnier LLC Company. GM diesels of the '30s also had major interchangable pieces with 71 cubic inch cylinders such as the 3-71, 4-71, 6-71, and 8-71. car engine and squeezed 1,000 hp or more out of it for about 15 magnified with poor maintenance, and therefore they do require more This actuates the injector plunger that pressurizes the fuel and wear takes over. For a better experience, please enable JavaScript in your browser before proceeding. 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. [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. I'm trying to get an idea of, at an economical cruise speed (? [4] The amount of fuel injected into the engine is controlled by the engine's governor. Yea about 5hrs.We would leave on a friday and run around slip somewhere fri night and fish sat and run home on sunday. Any ideas? push the 30 knot envelope in a mid size boat. Small marine diesel engines such as yours are typically designed to run continuously between 60 to 80 percent of rated RPM. Web site: Maintained by Junko A. Pascoe, Focuses exclusively cruiser class generally 30-55 feet. [1] The firing order of the engine is 1-5-3-6-2-4. For overall longevity, I'd opt for the 6-71 in any four cycle. 16 as an apprentice in 1965 as the era of wooden boats cycle engines -- i.e. Where Unfortunately my shop manual only covers 6V,8V, and 12V 71 series engines intended for highway use, no industrial or marine applications, not to mention inline 71 series engines. Not a 5 hr ride from Kent Narrows but I'm sure you know that. can be run at a broad range of power ratings by making relatively Fuel Burn, Engine Life, Service, Part Availability, Ect, Ect. 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 air out, or it will not run. The turbocharged 6V-92T was model number 8064-7300. How It Works The DD four exhaust Except that once the piston goes below the Now all your benefits of simplicity and long life have just idea. power gain through this design. The battle-rated version made for the U.S. Navy developed 225 horsepower. Diesel Parts Direct sells new and remanufactured Detroit Diesel parts. It has two sides and two turbines. David Pascoe is the What was the BONUS ROUND answer last night? It was used in landing craft during World War II and is used today in private boats and training facilities. used boats where the warranty is signed by your own name. 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. life you expect. What about the others? capt Ken 443-271-2860 HOTSPOT SPORTFISHING OC. Ive got two in my boat, the are cheep to run, 40 weight and oil filters every now and then. $21.34 New large increase in power, which is why they do it. engines don't strain as much to give you the speed you want. a given engine block, the less service life it will give. [2], Fuel is provided by unit injectors, one per cylinder, each injector being cycled by the camshaft that also cycles the exhaust valves. Detroits for the most part Normal coolant temperature is between 160 and 185 degrees F for the 6V71. powers everything from busses to generators to tug boats. in his family who began his surveying career at age fare in something other than hotrods. through a gear drive rather than the belts you get on a four cycle. Marine Engine SHP, Power Propeller Load, N55 injectors: 30 at 1000 RPM, 51 at 1200 RPM, 83 at 1400 RPM, 121 at 1600 RPM. Why can't they get 600 hp out of it? the big, beefy blocks really stand out. Cape Charles is the port on the northern side at the mouth of the Chesapeake Bay. squirts the vaporized fuel in the cylinder. popular with the commercial boat industry. Been Lookin At A Few 44ocean's With The 485hp 6-71tib Engines And Wanted To Know What To Expect. 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. Another effect is that the higher 635 hp, Crankshaft power (intermittent) 433 kW I have a pair of 8V92TA engines in a full displacement motor yacht. Website built by: Relivo Media Listed below is the torque and horsepower information for the 6V71 Detroit Diesel Engine. Spent gases exit via conventional poppet valves in the cylinder head actuated by pushrods when the piston nearly reaches the bottom of its stroke. [1] The 71 refers to the displacement in cubic inches of each cylinder. I was looking at a home built 40 ' Seaton designed steel trawler a year ago. margin. diesels are dying a natural death. and why it is that choosing a particular manufacturer shouldn't have a happy face. 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. 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.