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Old 02-25-2015, 10:32 PM   #31
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If Ford dumped the 2 valve engine and used the 3 valve in all class C's that extra horsepower and torque would be a nice upgrade.

In the class A's, a FRED with the 6.7 liter might be interesting. My 337 is a F550 chassis so there shouldn't be a big engineering exercise to make it into diesel powered vehicle.
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Old 02-26-2015, 09:18 AM   #32
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Super C

Mike,

I am well aware of the costs associated with the replacement of an injector, however, an injector failure in this day in age is rare. I know two people who have the 2000 RAM with the Cummins diesel, in the fifteen years of ownership one of the two had to have an injector replaced which was covered under warranty. I also am a fan of the RAM Cummins In fact I own a 2011 Big Horn with the Cummins. My son who works for Halliburton has yet to see an issue with an injector in either their Ford trucks or the Cummins diesels which are used in their equipment no injector failures. The last two years our vacations took us across the mountains of Wyoming, Colorado, Oregon, and Washington including Snoqualmie Pass, Deadman Pass, along with several long steep grades northbound in I-82 pulling an 11,000 pound Montana fifth wheel with the my RAM Cummins. I set the cruise control at 65 which is the maximum speed for ST rated tires and granted over the steepest of grades the truck did downshift but the maximum RPMs was 2600 @ 65mph rather than 45mph. Are you familiar with product failure behavior which is represent by the bathtub curve where your failure rate is high during the products early life which is generally your warranty period afterwards the failure rate levels off to a low level where it remains until the product reaches its end of design life. So the majority of these failures greater than 90% will occur early on or at the end of the design life. That is why almost every manufacturer offers an extended warranty for a cost as it is free money for them and there is countless research that supports this statement. Those two vans to which you refer are approaching the end of their design life how much is spent on maintenance to keep them roadworthy. Also, those two vans are not loaded to near capacity as are the class C RVs. If you think about it the farming industry, the marine industry and the heavy transportation industry all use diesel under adverse conditions particularly the farming and marine industry and there does not exist and major trend of injector failures. In fact the majority of the class A's diesel pushers use the Cummins 6.7 diesel. So to answer your question yes I did consider all possibilities and the positive far outweighed the negative. As for the one who posted that a gasoline engine does not require any major maintenance until 100,000 miles there are no major maintenance requirements for a diesel. Oil changes @ 15,000 miles what is the interval for oil changes of a gasoline engine 7,500 miles so his statement was not based on facts rather he just made a statement which he cannot substantiate.

I would have preferred that the Super C was be offered on the RAM 5500 chassis with the Cummins however for some reason Ford chassis is what is preferred better price or what who knows. One final point concerning the lifting of the cab to work of the Ford diesel they would have to do likewise to replace the V10 on the E450 and the E350 van chassis. Another, argument for the RAM 5500 chassis.
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Old 02-26-2015, 09:56 AM   #33
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Well, I'm pretty sure Dynamax is working on something with the F550. If they do, we probably won't any time soon.
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Old 02-26-2015, 12:55 PM   #34
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Dynamax Super C

They already have.

Isata F-Series by Dynamax - Features

The link above shows the Dynamax super c in the F550 chassis with either the 3 valve V10 or the 6.7L diesel
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Old 02-26-2015, 02:10 PM   #35
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Quote:
Originally Posted by bemmerz3 View Post
They already have.

Isata F-Series by Dynamax - Features

The link above shows the Dynamax super c in the F550 chassis with either the 3 valve V10 or the 6.7L diesel
I meant something more comparable to the Thor Super C or a Forester type build. That Isata is a whole different animal.
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