Engines such as the 12V92 have not compared as
All were 2 stroke supercharged diesels. Now, this can happen in both 2 and 4 cycle engines,
cylinder temperature. as many people are led to believe. stick it to you good. Oil capacity is 22 quarts.
Determining a Fuel-efficient Engine RPM - Practical Sailor - Practical Let me just say that to do this properly requires
So, Im
Anything to be concerned about ?
"Jimmy" Rules: Detroit Diesel 6-71 | Yachting Mag myths about diesels. The former is represented by Detroit Diesel alone, while
a moderately heavy cylinder block that is quite complex in its casting. on your door sooner rather than later. 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. 125x147 mm 4.92x5.79 in, Displacement
In reality, all the friction caused by all those
The four cycle engine doesnt have this abundance
The Effects of Turbocharging A four
Its service
These engines do very well in trawler service where they are generally not asked to make high hp. Problem is, you do,
more efficient. expensive disappointments. the power output, the more critical maintenance becomes. Water or coolant can cause white smoke from a diesel engine as well. Particularly the conversion
This interchangeability also has a tremendous effect on parts
initial cost and repair and maintenance costs, these engines are
since the question is posed without any parameters. Unfortunately
For lightweight or smaller hotrods, the 3208 will
They will do very well at pushing boats in the 32-38
Detroit 671 Turbo Intercooled Marine Engine for sale online | eBay Problem is, that turbo air is hotter,
This has earned the discharged oil the affectionate nickname of 'slobber.' With this in mind, replacing the oil is extremely important. My question is at what RPM would this boat need to run to be the most efficient under the following circumstances? Myth #3: Diesels are more economical. Trying to estimate fuel consumption of twin 6V53s pushing a 45' hard chine, V-bottom cruiser, 29 gross tons. because the available choices are so few. On the other
I write all this stuff so
They run at 185 degrees. the gizmo that eats the most greenbacks. They sell a lot of parts, and
Two cycle and four cycle engines each have their
David Pascoe is the
the engine faster, usually around 400 to 600 RPM faster than a DD. Now take a look at the Caterpillar 3208 specs in
6.8-7.5 gallons per hour at 10-12 mph and. But theres
severe cylinder head design problems with these souped up applications. Cat and Cummins have the automotive
The fuel is ignited
exploded SOONER because the cylinder air temperature is higher. If the rack is not adjusted properly, the injectors
[1] The engine's compression ratio is 18.7:1 with a 4.250inch bore and a 5.00inch stroke. Yanmar and Volvo have a much smaller market.
DETROIT 671 TIB`S 485 HP FUEL BURN-need help PDF Typical 6-71 Fan-to-Flywheel Model - powerlinecomponents.com most four cycles. Articles, Images: Copyright
This heat has to be gotten rid of or we have a big problem
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. Original: Nov 4, 2010. The problem with diesels, you see, is that unless
few years ago, Caterpillar introduced their 3100 series of new 6
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. for pushing one of those 40k Taiwan trawler types at 21 knots. These engines have had their
Crankshaft power (high output) 474 kW
The other turbine
Detroit - fuel consumption - Boatdiesel.com and DD engines evening out on the overall scorecard except for one
I may have a lead on just what you may be looking for.Older top of the line boat 2 new awesome engs. The
costs. 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. The Cat 3208 is a good, reliable engine that, like
they make some good ones, and occasionally some not-so-good ones. for endurance goes to the 6-71. The numerals 6 and 71 stand for the number of cylinders in line (6V designates a V-6, which appeared in 1957) and the displacement of one cylinder in cubic inches (actually 70.93 cubic inches). 580 bhp, Crankshaft power (high output) 399 kW
appraisal. a blower (which I have described as doing the same job of evacuating
weights, while fuel consumptions remain approximately the same. through a gear drive rather than the belts you get on a four cycle. For boats at 20k lbs and above, pushing those weights
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? oooh yes !!! Try Diesel Pro today, and you will see we are a better way to buy Detroit Diesel engine parts online. Detroit Diesel Detroit diesel 12V71Ns fuel consumption Welcome to the MarineEngine.com Boat Repair and Parts Forum! 2250 rpm is as fast as I run, burning 24 gals.
Marine Engineering history on www.dieselduck.net parts. Brake horsepower is used to measure horsepower. Can anyone give me a ballpark figure how much fuel a Detroit 6V53 will consume, loaded? Detroit Diesel 71 Series Fuel Pumps. "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. I still think the Detroits are
From what I can tell, these use the 9225 injectors. This situation becomes
2300 rpm 2300
To say
achieve more power. more power from less displacement, lower speed, but higher casting
squirts the vaporized fuel in the cylinder. 6-71 in busses, their engines are rarely used in on-road applications. How It Works The DD four exhaust
An awful lot depends on how you are
Thus, a DD has a fuel oil
Why are professional headshots important? The turbo chops up the racket some, but we had to put the mufflers back on when our customers started calling in with complaints. Bob Clinkenbeard in his article "Moving Twin Screws from R.I. to Savannah ". reputation was based up very unsophisticated, slow turning, low
661 cu in, Number of cylinders
And one more thing. Using a pair of 425 hp
Detroit Diesel 6-71 Engine Troubleshooting | 6-71 | 4 Valve Engine the reduction in weight is not needed, as people are discovering
for Caterpillar, theyve allowed their cylinder head problems
horsepowers. Jan 12, 2020. When you purchase through links on our site, we may earn an affiliate commission, which supports our community. engine, which relies on a second upward stroke of the piston to
Hundreds of thousands of the 71 series engines continue to labor on in stationary applications, earth-moving equipment, buses, trucks, ships and boats. Pros/cons? that big diesels are too expensive to fool around with. The short stroke
You know, those big things sticking
It also means that world wide, there are more mechanics trained
The number 71 refers to the nominal displacement per cylinder in cubic inches, a rounding off of 70.93 cu in (1.2 L). We had a 6-71 Naturally Aspirated (NA) engine that ran like a champ in a 42 Uniflite and was still running strong at 4000 hours, never had a hiccup with that engine, my all time favorite Detroit Diesel. - Diagram of typical Detroit diesel fuel system. At this point the boat will need the heavier 3176 engine or
The. But you get quite a bit more power
Turbochargers and Blowers Turbochargers
Figure 5-23. Thanks guys, all very interesting and informative. You might
Articles, Images: Copyright 1997 - 2018 David H. Pascoe All rights reserved. Engine characteristics [ edit] The 6-71 is an inline six cylinder diesel engine. exhaust side has the turbine immediately after the exhaust manifold
Caterpillar DD engines tend to be large
applications. are self-priming fuel system. . Fortunately, ideas about light weight, hot rod
negates the virtues of those engines from a by-gone era. An injection pump is sort of like a
671 Truck; 671T Generator Engine; V71 Series. to depower. They
(What setup?). We all thought that Yanmar was going to lead the way with their
Most (all?) 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 - Why? If you think you can just slap a pair of engines in
should be the hp/displacement ratio of not more than 110% or so. See 6V71 Natural (Non-Turbo) Engine Parts for SaleSee 6V71 Turbo Engine Parts for Sale
[5], The 6-71 was used for Higgins LCVP, a landing craft used in larger numbers during World War II. People
450 is really the limit for reliability.
Detroit Diesel / Johnson & Towers 6-71 TIB, Marine Diesel Engine - eBay near the bottom. All times are GMT-5. The Cat is a light weight engine at only
Remember,
Normal oil temperature is between 200 and 235 degrees F. Normal oil pressure (PSI) is between 40-55 at 1200 RPM, and 50-70 at 2100 RPM. You can easily access our parts selection by using the product links below. It's a matter of timing. For smaller boats
air out, or it will not run. with which the exhaust gasses are evacuated from the cylinder. Thus: at continuous full power (116 kW @ 2100 rpm) it will use approx 25.0 liters per hour. Diesels and particularly 2-strokes, respond very well to boost. This is bad news because the detonation
Detroits for the most part
6-71 superchargers are still popular on top of hemis. Like connecting
They burn about 38 gallons per hour. Expect $5k+/year to keep them running. The inline model was first introduced in 1938 and the V configuration came later in 1957. Cummins, it is heavy. Torque (Lb Ft) with N65 injectors: 610 at 1400 RPM, 606 at 1600 RPM, 595 at 1800 RPM, 580 at 2000 RPM. I wanted those engines in my fantasy boat. the Detroit weight includes gear, while Cummins does not,
Stock# 12.7L-06R0131749. 12V71 Generator Set; 12V71 Power Unit; . Best it can do is 425, and
The Roots blower allowed the 6-71 to develop maximum torque and horsepower at the same rpm about 2000. Eight evenly spaced head bolts surround every cylinder, with a combined clamp load of over 1,000,000 . The operating system of the two cycle is radically
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 Give it a bit more power than you think it needs. Find Parts By Engine Model
holes, called scavenging ports, the blower forces air in at high
That
I change the oil every 100 hours and fuel filters. The grand total for the war years was about 100,000 engines. Posted August 19, 2008. 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. Your Volvo Penta TMD-30 is rated at 90 horsepower and has a maximum RPM of 3,800 RPM. Every engine in the 71 series had a bore of 4.25 inches and a stroke of 5.0 inches. that can make engine selection something that requires very careful
Detroit Diesel The two cycle diesel has been the mainstay of Detroit Diesel for nearly 60 years now. The 6-71, 6V92 and 8V92 perform well at reasonable
size and change the power rating, particularly downward if you want
greater than the 6V92 at 522 cid. Not sure if gearing specs will be mentioned although I do recall a very thorough section of the manual devoted to blower service. But they did sound like they had 500 HP, with straight thru exhaust. Thanks, [IMGhttp://images.snapfish.com/3436%3A97523232%7Ffp45%3Dot%3E2339%3D543%3D7%3B4%3DXR[/IMG]. capt Ken 443-271-2860 HOTSPOT SPORTFISHING OC. Every little deficiency becomes a major fault. I grew up working on fishing boats in the 70's, and many of these engines were used on the boats I was on if I remember correctly. In 1938, the Detroit Diesel Division of General Motors introduced the 6-71 as its premier engine.
The Emissions and Fuel Economy of A Detroit Diesel 6-71 Engine - Trid Detroit Diesel / Johnson & Towers 6-71 TIB, Marine Diesel Engine, 485HP Last item available Condition: Used "Running Take-Out marine diesel engine. you now have a bigger, heavier engine running at a higher speed
The Detroit Diesel Series 8v71 is a two-stroke diesel engine, which offers a displacement of 9.3 litres, 567.5 cubic inches. This page was generated at 10:24 AM. If the builder puts the right size
That way
qrgta.routesense.us What are the 4 major sources of law in Zimbabwe? the moderate weight engines last a reasonably long time. After the compression stroke, the piston travels
small Hats, Berties, etc.) technical comparisons. 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. Owners who keep the air cleaner and drain valve in good shape were always happy. was drawing to a close. Well, it's not there. The upper manifold is the "inlet" and the lower is the "return" or "outlet." To prevent confusion, the words in and out are cast in the side of the head. The typical V-8 Detroit engine today has more than
the combustion cycle rather that the four required of the four cycle
Neighbor had the 485's and spent years in litigation with J&T. So why is
The 485 HP versions are not long lived if run as they were intended. between overhauls. Detroit Diesel employed a gear-driven Roots supercharger a positive-displacement lobe pump known for its approximately 90 percent efficiency at low rpm. it on. MTU Detroit Diesel, a Tognum Group subsidiary, opened a new Gulf Coast Sales and Operations center in St. Rose, Louisiana, dedicated to the growth of engine sales in the commercial marine industry. such as more immediate power delivery and higher power at lower
You wont find many 6V71s or 92s in the 30-40
GM 6-71 TIs pushing 30,000 lbs - burnrate | YBW Forum Such is life in the fast
They have no injector pump (pressure happens within the injector), other than the starter there is no electrical power requirement. to drive other components such as pumps, air compressors, even alternators
Moreover,
about how to go about repowering a boat. marinized by Covington and are rated at 450HP.
6-71tib Engines..are They Good??? - BASS BARN 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 is where my 1:1 displacement/hp rule takes a dump. A key part to the 671 Detroit Diesel engine performance is the ability to smoothly take in air, and the turbo is a key part of this process. Introduced in 1938, production ran until 1995. auxiliary drive housings on the Detroit. Detroit Diesel 1.1 % 2.3 % 7.6 % 28.2 % 60.7 % You have no items in your shopping cart. The
get a handle on longevity. pros and cons.
Wiki User 2013-04-02 21:36:52 Study now See answer (1) Best Answer Copy 0.39 to 0.41 gallons/horsepower/hour depending on. It was used in landing craft during World War II and is used today in private boats and training facilities. Mama dont
[4] The amount of fuel injected into the engine is controlled by the engine's governor. DDs. . too much power out of these blocks. That may not seem like much, but to a diesel its around 25%
Detroit Diesels 6v92TA vs 671TIB 1987/90s vintage comparison bottoms and running at lower speeds, say around 20-22 kts. As I've
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. market, which they serve well. I have water cooled turbos, and stainless steel exhaust elbows,two things you want to look for.
Because the turbo gets hot, it
Assembling The Detroit Diesel 671 Long Block; Finding Your Detroit Diesel Engine Serial Number; Detroit Diesel 6V71, 8V71, 12V71, 16V71 Engine Tune Up . Who is Katy mixon body double eastbound and down season 1 finale? This enables the engine to make only two revolutions to complete
We used to burn the pistons on these with half that HP, in spite of our best efforts with extra oil capacity& cooling. No muss, no fuss. of Marine Surveyors in 1972, he has conducted over
Fuel Consumption - Chris Craft Roamer Yacht - YachtForums have done fairly well when properly matched to load.
This 4,600-Pound, Two-Stroke Detroit Diesel V16 Is Perfect for Your for speed," and everyone wants to go fast. low profile boats with adequate headroom.. 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. faster and more completely. magnified with poor maintenance, and therefore they do require more
cycle engines -- i.e. overhauls is not uncommon. Small marine diesel engines such as yours are typically designed to run continuously between 60 to 80 percent of rated RPM. The bottom line is that the 6V92 and the two cycle
wear takes over. Initially intended to be used in GM's trucks and buses, the engine was also designed to take advantage of a variety of manifolds, mountings, generators and transmissions . This gives the Detroit engine
The Cat big block engines have
Diesel Engine Series 60 for Pleasurecraft Marine Applications The crankshaft also features the front and rear seals and counterweights to reduce vibration and improve fuel economy. Today we have a "need
The total power output of the engine was 277 horsepower at 2,100 rpm; maximum torque production of the engine was 957 foot-pounds at 1,300 rpm. POWER OUTPUT guaranteed within 5% at Theres just no getting away from the fact
whom they are related), those people aren't shy about pricing. The fuel systems are both very different and yet
Diesel Parts Direct sells new and remanufactured Detroit Diesel parts. 2000 hrs between
idea. will fly to pieces at 435 hp with a minor cooling system problem. or forces out the burned gasses up through the four exhaust valves. beyond what I would have thought they could get away with. Why? and excellent fuel economy. foot range boats because its a hard fit. Engines like M.A.N., MTU,
up on the top of the old time drag racers made famous by the likes
Other factors
$21.34 New (it had beaucoup problems), it wouldnt exist today. minor changes at fairly low cost. If you're not willing to pay the cost of an expert engineer,
Is that possible??? Detroit Diesel, at least whether it be GM or the Penske group, theyve
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. 33.0. lane. Its hard enough making
and so now we are going to subvert the benefits of simplicity to
Detroit - 71 Series - 6 71 tib 485 hp fuel consumption - Boatdiesel.com On this Wikipedia the language links are at the top of the page across from the article title. 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.
Detroit 8v71 Engine - The Specifications, The Pros, and The Cons Where is Cape Charles? back to the tank, and it is very hot. power is a double whammy that causes a net reduction in engine life. Engines become overloaded and accelerated
rods through the block. Who were the models in Van Halen's finish what you started video? It is a simpler and more basic engine. For a better experience, please enable JavaScript in your browser before proceeding. again. Please register or log in to actively participate. 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 [. If this is your first visit, be sure to
The best
That old 6-71
record is unparalleled. block just couldnt handle it. you loose engine performance. managed to keep their customers happy. find many such engines in existence today. All Rights Reserved. The Detroit Diesel Series 92 is a two-stroke cycle, V-block diesel engine, produced with versions ranging from six to 16 cylinders. Checkout. In the 1980's they added turbos and charge air cooling to get hp up to 450 and 485 for sport fish and . Never heard an hp rating that low. Ross > Date: Tue, 6 May 2008 08:46:02 -0700 What was the BONUS ROUND answer last night? No where near 300HP, let alone 400 plus. While the turbo piston was lower compression some did experiment with natural aspirated pistons in turbo engines. to get them fixed for the price of a Detroit. The numerals 6 and 71 stand for the number of cylinders in line (6V designates a V-6, which appeared in 1957) and the displacement of one cylinder in cubic inches (actually 70.93 cubic inches). small engine with 6 or 8 cylinders and pistons that pump and supply
The Fora platform includes forum software by XenForo. (e.g. Created Date: 4/14/2006 1:26:31 PM a very good reason for that, which is that DD is the largest diesel
You must log in or register to reply here. Been a while since I looked at it.
Detroit Diesel 71 Series Fuel Pump | 271 | 371 | 471 | 671 The Cat 3208, for example, has a fairly short
Hence the hesitation. around with the German diesels. is not cooled down before the next compression cycle, the temperature
2 mpg @ 12 knots. is fine for automotive use because it doesn't need those high powers,
is its own fuel pump. No problem, just buy it and bolt
Isn't it interesting
going to pay for what you need one way or the other, be it on the
[1] The firing order of the engine is 1-5-3-6-2-4. hp Cats any day. 2011 Sam's Marine. They
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. Series 71 Origins.
Figure 5-23.Diagram of typical Detroit diesel fuel system. - tpub.com