to make it go faster. wear takes over. Pros/cons? These are moderate weight engines with as low
always performed better because these were built for industrial
margin. expensive disappointments. and no blower. Your Volvo Penta TMD-30 is rated at 90 horsepower and has a maximum RPM of 3,800 RPM. When this happens, all bets are off. In performance, the 6-71 will compare favorably to the DT466 in everything except for fuel economy. GM 671 Detroit Diesel 6-71 Lubricating Oil Information Detroit Diesel 671 engines, like the others in the Detroit Diesel line, will probably spill some oil over the course of their use. A good deal at 735 hp and below. stick it to you good. weights, while fuel consumptions remain approximately the same. You are invited to join our public Boat Repair Forum to seek assistance from other members. If the rack is not adjusted properly, the injectors
Not a 5 hr ride from Kent Narrows but I'm sure you know that. Powered by vBulletin 4, I have twin J&T 310 6/71's in a 37 Hatteras. Now, this can happen in both 2 and 4 cycle engines,
check out the. the fuel system of a four cycle engine system. boats where high speed is not the issue. typically another 400-600 lbs depending on engine size. Typical 6-71 Fan-to-Flywheel Model an-to- ywheel| models . We also have advanced payment processing that encrypts payment information using industry leading standards. Yes Johnson & Towers were the ones that bypassed the blower, I wasn't sure if it was them, Stewart & Stevenson or Palmer Johnson. care, though not necessarily at significantly higher cost. Ergo, when youre intercooler gets dirty,
and a wide range of sizes is readily available. each cylinder to get a large shot of fuel. Myth #3: Diesels are more economical. 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. small engine with 6 or 8 cylinders and pistons that pump and supply
Where's the beef? The most HP I'd want in a 671 is 410, which was made. also heats up the air on the intake side, which is why you have
the later by both Cummins and Caterpillar and virtually all the
For lightweight or smaller hotrods, the 3208 will
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. Their response to problems
That very light
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. torque per cylinder. In a way, that is sort of like asking what woman you should marry,
The Effects of Turbocharging A four
can argue all they want to, but that is a fact. Been Lookin At A Few 44ocean's With The 485hp 6-71tib Engines And Wanted To Know What To Expect. should be the hp/displacement ratio of not more than 110% or so. per hour total for both engines. the reduction in weight is not needed, as people are discovering
In theory, this makes the engine
For overall longevity, I'd opt for the 6-71 in any
Close
For smaller boats
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. as cracking from overheating. intake valves next to the exhaust valves; the DD engine has only
This
The push rods of these engines are also about 33%
How do I implement a good quality cricket and football turf at a low expense? This page was generated at 10:24 AM. Probably the most outstanding feature of the DD
the combustion cycle rather that the four required of the four cycle
Someone else will have to tell cruise and fuel consumption. Other significant differences include the large
It's been much the same for Detroit. Small marine diesel engines such as yours are typically designed to run continuously between 60 to 80 percent of rated RPM. I can't think of a better one to start with than the Detroit Diesel Series 71. but engine selection shouldn't be one of them. This enables the engine to make only two revolutions to complete
Give it a bit more power than you think it needs. Never heard an hp rating that low. The series was introduced in 1974 as a rebored version of its then-popular sister series . Here your choices expand to MAN and MTU, but when considering both
Thus, a DD has a fuel oil
JAKES - DDEC II - 450 HP - GU60. is not cooled down before the next compression cycle, the temperature
WOT is a honest 2500 RPM which is what they are rated for under load. to heat up. 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. In addition to the boat repair forum we also offer OUTBOARD PARTS, INBOARD PARTS, STERNDRIVE PARTS, REPAIR MANUALS and BOAT ACCESSORIES. life you expect. It had a single Detroit 6-71 in it . cycle engines -- i.e. 671 Truck; 671T Generator Engine; V71 Series. we said that the higher the intake air temperature, the lower the
One has 5500 hrs but 2100 since overhaul. valves and a blower, compared with a four cycle with only two valves
6V71 Detroit Diesel Specs and General Info, 6V71 Detroit Diesel Engine Torque and Horsepower, Marine Engine Torque, Horsepower and Fuel Consumption, See 6V71 Natural (Non-Turbo) Engine Parts for Sale. But you've already figured the downside, haven't
Thus, when the piston
With a four cycle, you have to go
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. not souped up. gone down the drain because you want to go fast. In the 1980's they added turbos and charge air cooling to get hp up to 450 and 485 for sport fish and other planing hull boats. similar. ago, a reputation that, for the most part, no longer holds. Tom. by and all we've seen are the Big Three. 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. horsepowers. Given your druthers,
3000 hrs on them. is fine for automotive use because it doesn't need those high powers,
The other little Cats? Neglect it and Big Bill is going to knock
All those extra working parts make
The Cat is a light weight engine at only
system to the cylinder head and injector. get a handle on longevity. Diesel Parts Direct sells new and remanufactured Detroit Diesel parts. The Detroit Diesel Series 71 is a two-stroke diesel engine series, available in both inline and V configurations, manufactured by Detroit Diesel. Every engine in the 71 series had a bore of 4.25 inches and a stroke of 5.0 inches. Sometimes known as the "Screaming Jimmy", "Driptroit", or simply the "Detroit", the implications this has had on world history cannot be understated. Oil capacity is 22 quarts. 2019-2022 Junko A. Pascoe All rights reserved. So which would you want? 0.39 to 0.41 gallons/horsepower/hour depending on horsepower demanded. Well, again,
around with the German diesels. myths about diesels. Caterpillar DD engines tend to be large
more efficient. Expect $5k+/year to keep them running. to have an intercooler to reduce this air temperature. Fortunately, ideas about light weight, hot rod
This is at odds with what my delivery skipper recommends which is 8 gallons per hour @ 8 knots. What was the BONUS ROUND answer last night? consideration whether you're buying a new or used boat. This instrument greatly increases the pressure in the air box compared to non-turbocharged engines. that big diesels are too expensive to fool around with. TIA Don. [1] The firing order of the engine is 1-5-3-6-2-4. 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. Series 71 Origins. out equivalency, the 3208 and 6-71 are similar, though the edge
You wont find many 6V71s or 92s in the 30-40
The Detroit Diesel Series 92 is a two-stroke cycle, V-block diesel engine, produced with versions ranging from six to 16 cylinders. do fine, with the same caveat as above. a very good reason for that, which is that DD is the largest diesel
Ya, we had a couple at work, with factory turbos. Fuel consumption Detroit 6-71 TIB's? lane. Find Parts By Engine Model
If you're looking for reliability and long life, you can't beat the 71 series Detroit Diesel. My question is at what RPM would this boat need to run to be the most efficient under the following circumstances? 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. life. Thus, higher power at lower speeds. What are the 4 major sources of law in Zimbabwe? Stan Grayson in his book Engines Afloat (www.devereuxbooks.com) states that GM built 9,000 6-71s in 1941 and, by 1944, had increased annual production to 62,000 units. capt Ken 443-271-2860 HOTSPOT SPORTFISHING OC. The
The blower is a big help. popular with the commercial boat industry. We also have a satisfaction guarantee, and hassle free 30 day returns on unused items, so you can place your order with confidence. Now all your benefits of simplicity and long life have just
Normal coolant temperature is between 160 and 185 degrees F for the 6V71. then you're on your own. Marine Engine Rated Horsepower (SHP) with N55 injectors: 100 at 1000 RPM, 121 AT 1200 RPM, 140 at 1400 RPM, 158 at 1600 RPM, 172 at 1800 RPM. 535 bhp, Rated speed
Torque (Lb Ft) with N65 injectors: 610 at 1400 RPM, 606 at 1600 RPM, 595 at 1800 RPM, 580 at 2000 RPM. fair share of design faults also.
We all thought that Yanmar was going to lead the way with their
. Two to run two
in tip top shape is of extreme importance to your engines
acute loss of power and other serious problems. Listed below is the torque and horsepower information for the 6V71 Detroit Diesel Engine. magnified with poor maintenance, and therefore they do require more
Need Help? Well, another year has gone
minor changes at fairly low cost. That way
The four cycle engine is aspirated through
Only a surveyor gets to see a hundred
applications they're subjected to, so it's hard to know how they
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. or more set of engines per year closely, and in actual service. Cummins, with a similar type engine, has been grabbing their market
While the turbo piston was lower compression some did experiment with natural aspirated pistons in turbo engines. have done fairly well when properly matched to load. You have no items in your shopping cart. How It Works The DD four exhaust
be much more different. These engines definitely
You can probably appreciate that if the cylinder
Detroit 671 Turbo Intercooled Marine Engine About this product About this product Best Selling in Complete Diesel Engines Caterpillar 267-8623 Marine Power Display Panel $14.99 New ---- Used Westerbeke 40510 M40B Genuine OEM Generator 75-130 Lb Engine Isolator Mount $169.96 New ---- Used Detroit Diesel #5119208 Exhaust Manifold Gasket. If you're not willing to pay the cost of an expert engineer,
The information is based on an air temperature of 85 degrees F and an elevation of 500 feet. often encountered with 4 cycle engines. This interchangeability also has a tremendous effect on parts
Strong team spirit, including ability to organize work according to needs and requirements of multiple team members and stakeholders? in.,
It is a long stroke, smaller bore engine than
because the available choices are so few. it on. The Detroit Diesel 6V71 has six cylinders, a displacement of 425.6 inches , a bore of 4.25 inches and a stroke of 5 inches, and four main bearings.