most capable off-road pickup?

[Ridge Runner]

Admittedly knowing very little about diesels, I do have to wonder why most large ship diesels are inline motors, not V configuration...if the V is indeed a superior design...? Almost all, if not all, large ship motors are of the inline design. And these are the most powerful motors on earth. Or ocean rather.

These motors reach 1.5 million cubic inches with power output at 108,000+ HP. The motors typically come in 8, 10, 11, 12, 14, 16, and 18 cylinder versions.

Just to make this more confusing, the diesel engines on American subs (at least the fast attack boats, I don't know about the boomers) use an engine with, I believe, 8 cylinders and 16 pistons with a crankshaft at both the top and bottom of the cylinders. I may be misremembering the exact cylinder count. I haven't seen one since 2004.

 

[Kaisen]

Admittedly knowing very little about diesels, I do have to wonder why most large ship diesels are inline motors....

Packaging.

Ships are much longer than they are wide, agreed?

Most ships are twin engine, sitting side by side. To have enough room to fit two engines side by side in a room where width (beam) is at a premium, it's easier to have a long narrow engine. Servicing becomes easier as well, as you easily have access to both sides.

One-off or low-volume inline engines are also much easier to manufacture as their block design is relatively simple.

 

[Flys Lo]

Packaging.

That, and maintenance.

The main reason that most of the OTR trucks are now 6 cylinders is it makes all in-frame work so much quicker and easier (and cheaper). That said, I'll take a Cat 3408 (V8) over almost any of the 6cyl offerings.

 

[NorthernWoodsman]

Can't agree with you on that. Ships are plenty wide enough to handle a V-shaped motor. Beams can easily be in excess of 50'+. Some are easily 100'+ wide.

Ships are actually more often single engine, not dual. One engine, one prop is the preferred layout. At least it is for the past few years.

I think that if they wanted to, a large V-shaped diesel would easily fit into any large ship with plenty of room for servicing.

Again, I know little about diesels, but I think there might be something to their choice of inline over V. It's not just about space, if at all.

I'm not really invested, nor do I really care. Just pointing out that the largest, most powerful diesels built, are inline.

Packaging.

Ships are much longer than they are wide, agreed?

Most ships are twin engine, sitting side by side. To have enough room to fit two engines side by side in a room where width (beam) is at a premium, it's easier to have a long narrow engine. Servicing becomes easier as well, as you easily have access to both sides.

One-off or low-volume inline engines are also much easier to manufacture as their block design is relatively simple.

 

[bfdiesel]

What about the old prop plane engines with all the cylinders in a circle? Those were pretty stout and fairly simple.

 

[JohnsD90]

No kidding, the B is in heavy equipment. That's were it came from and why it was a cheap choice at the time.
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Read it again. I was talking about the new 6.7L that replaced the B. No idea why they stuck with an I6 that hardly fits, when that engine appears to be purpose built just for the new trucks. I haven't seen the NEW engine in anything other than a Dodge. A V just seems like it would fit better. There's nothing about the shape of an I that makes it stronger. V's can be designed the same way. Most BIG diesels are V's.

All 3 machines i listed have a 6.7l cummins in them at my current job. Most cummins i have come across are I6's like the 6.7 liter, 9 liter and 15 liter. None of the heavy machinery i work on have V motors in them. Brand new Capacity trailer jockeys use the 6.7 cummins as well. Doesnt get much better than a B series cummins, new or old.

 

[Kaisen]

Again, I know little about diesels, but I think there might be something to their choice of inline over V. It's not just about space, if at all.

Inline motors must be superior then. You made your point.

How many light duty trucks in the US are offered with an inline 6, 8, or 12 motor?

Cummins I6 in the Ram. That's it.

Everything else is a V. They must be morons. There's plenty of space for a I6 in a Ford Super Duty or GM pickup, what were they thinking with their V8s?

And what was Ram thinking with their newest pickup diesel being a V6!?

And what was Nissan thinking with their CUMMINS pickup diesel being a V8!? And Toyota might use that same CUMMINS V8 diesel in the Tundra!? Blasphemy!

New Mercedes-Benz diesels, even the Sprinters -- yep, V6s.

Idiots. The lot of them... ONLY Ram's thirty year old engine architecture is superior!!

 

[NorthernWoodsman]

you have a lot of friends don't you...

Inline motors must be superior then. You made your point.

How many light duty trucks in the US are offered with an inline 6, 8, or 12 motor?

Cummins I6 in the Ram. That's it.

Everything else is a V. They must be morons. There's plenty of space for a I6 in a Ford Super Duty or GM pickup, what were they thinking with their V8s?

And what was Ram thinking with their newest pickup diesel being a V6!?

And what was Nissan thinking with their CUMMINS pickup diesel being a V8!? And Toyota might use that same CUMMINS V8 diesel in the Tundra!? Blasphemy!

New Mercedes-Benz diesels, even the Sprinters -- yep, V6s.

Idiots. The lot of them... ONLY Ram's thirty year old engine architecture is superior!!

 

[Kaisen]

you have a lot of friends don't you...

I've got a lot of smart friends. The idiots don't last long.

 

[Ridge Runner]

Come on, guys. Does this really matter? The thread is about the most capable off-road truck.

 

[NorthernWoodsman]

There, I fixed it for you.

The smart friends don't last long.

And as I mentioned previously, "I'm not really invested, nor do I really care."

...and now back to your regularly scheduled programming.

 

[Buliwyf]

Well the most capable truck isn't offered in a diesel because said diesel engine is too darn tall to fit without messing up the front axles travel. Rectangle peg in a square hole.
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I didn't know that the newest Cummins 6.7L is available in any equipment. That's news, thanks. I don't really consider a ISB 6.7 a "B series". I thought the 6.7L was made just for Dodge. So do the new Dodges have that engine because it suits them, or because Cummins already makes tons of them for Forklifts and they're cheap and plentiful like the old B series???
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Most of the big boys I get to play with 500kw-3000kw's of power are all V's. V20, little pistons > I-10, big pistons, for good output per gallon and throttle response. Allthough trains use inlines still (I think). I think semi's only use V's because they fit so perfectly between the frame rails and they really only need 12-15L of displacement which is still a pretty effiecient piston size, even when you only have 6 big ones. In fact I haven't seen a I with more than 6 pistons in a very long time. I mean an MTU 4000 series, or a Cummins KTA60 is actually a fairly small engine for a 2Mw engine. Only about the size of a Ford Econoline 350. An inline engine would just be too long..... And in the Dodges case, too tall.

 

[Clutch]

Come on, guys. Does this really matter? The thread is about the most capable off-road truck.

Did we ever figure that out? Seems to me we need a real world test. I volunteer to be a driver!

 

[Flys Lo]

Most of the big boys I get to play with 500kw-3000kw's of power are all V's. V20, little pistons > I-10, big pistons, for good output per gallon and throttle response. Allthough trains use inlines still (I think). I think semi's only use V's because they fit so perfectly between the frame rails and they really only need 12-15L of displacement which is still a pretty effiecient piston size, even when you only have 6 big ones. In fact I haven't seen a I with more than 6 pistons in a very long time. I mean an MTU 4000 series, or a Cummins KTA60 is actually a fairly small engine for a 2Mw engine. Only about the size of a Ford Econoline 350. An inline engine would just be too long..... And in the Dodges case, too tall.

You got that Bass ackwards.

Almost all semi's use I6's. Some of the very high GCW trucks will use V8's, but I don't think you get them in the US (at least I haven't seen them) - Scania, Mercedes etc. All 200k lb+ GCW's.

Trains mostly use V16's.

 

[Kaisen]

You got that Bass ackwards.

Almost all semi's use I6's. Some of the very high GCW trucks will use V8's, but I don't think you get them in the US (at least I haven't seen them) - Scania, Mercedes etc. All 200k lb+ GCW's.

Trains mostly use V16's.

Scania makes a V8 diesel semi for the European market than makes 730 horsepower and 2600 lb-ft torque.

It's called the R730. Someone should have told them about the inline thing. Poor engineers.