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[DUKES2FORDS]

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The only problem with the 6L is that it doesn't make any torque below 2000 RPM.

For those that aren't familiar with ag/construction equipment, the engines need to be bulletproof, high torque, have good fuel economy and be nearly maintenance free.

Lets check how the 6L does. It certainly isn't bullet proof. It isn't a high torque engine. It is a high reving engine. It doesn't have good fuel economy and it requires a lot of maintenance. I wouldn't want a 6L in my tractor. I don't think it would work in a field tractor at all and that is why I don't think it is used in them. The 466 is used in some construction and ag equipment. The only industrial application I know of for a T444E is street sweepers and I know of customers who complain about them. "

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What about the IH version of the 6L? It's rated at 625ftlbs of TQ in IH trucks. Is that not "high torque"? [img]/ubbthreads/images/graemlins/confused.gif[/img]
Why don't you understand that these engines can be tuned for higher or different torque curves depending on the application (industrial, agricultural, OTR, etc.)????

IH makes great industrial engines used in everything from dump trucks to log skidders.

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"Ha ! Th 5.9 is used in equipment up to and over 200 HP. You need to take a closer look at modern tractors. They are very high performance machines. Cummins practically owns a lot of the market with the 5.9. It has proven to be a very tough, versatile engine."

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I see a lot more 8.3L Cummins used in farm equipment than 5.9's. I still see 5.9's in some backhoes, but over 200HP and the 8.3L is much more common. The 5.9L is overmatched in most medium duty situations. I've driven lots of 5.9L powered dumps, they suck on power when loaded......pedal to the metal all day long, four-ways "on" on every hill.

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"A diesel engine in a pickup truck has a holiday compared to a tractor. The duty cycle in a tractor is the highest of almost any application other than power generation. There is no ram air effect to assist with the cooling. The engine is always operating at high boost pressures. And they operate at fixed speeds (2000RPM) for thousands and thousands of hours."

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IH 9L V-8's ran like that for decades in IH tractors. The advantage of I-6's in tractors is as much in packaging as anything. I-6's fit the long nose profile of farm tractors better than wide V-8's.

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"re Cummins sucking the hind tit... I don't know what your metric is, but mine doesn't involve drag racing and making smoke. When I buy a $45,000 truck, I want an engine that will pull for 250,000 miles without any problems. That is priority #1. My truck can't be in the shop. I don't have time to deal with exhaust backpressure valves and twin turbos and crap like that. It might be fine for a "diesel enthusiast" to spend time on that sort of stuff, but I can't. "

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I agree, but don't you think that the rest of the D/C truck will need to be serviced many many times before 250K? If you're worried about "not having any problems" then you better start worrying more about the truck itself and less about the engine. The rest of the truck will start falling apart ~100K.

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"It has to start and run at full performance day in and day out for a long, long time."

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So what about lift pumps, Alternators, Power steering pumps, transmissions, brakes, etc.? Aren't they a cause of "problems", too?

From what I've seen, Fords have been more reliable in the past than Dodge trucks in terms of "other" parts. What difference does it make if I'm in the shop for a 6L headgasket and you're in the shop for death wobble, cracked frame, lift pump, etc.??? "downtime" is "downtime", right???????? [img]/ubbthreads/images/graemlins/confused.gif[/img] You guys act as if your engine was touched by the hand of God, but it's like "who cares" about the rest of the truck?!?!?! [img]/ubbthreads/images/graemlins/rolleyes.gif[/img]

DOWNTIME IS DOWNTIME, NO MATTER WHAT ENGINE IT COMES WITH.

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"I really don't care if one engine is 10 HP less than another. All these engines will pull my loads at 65MPH, but which one is going to do it the easiest and last the longest doing it. From what I can tell of the 2005 engines, that engine is the Cummins."

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And the rest of the truck, I give the nod to Ford. So in the end, we'll probably have the same "downtime", but I'll have a faster truck with lots more payload, bigger cab and more features.