tractorslayer

So I have been hearing for awhile now that they made a CUMMINS non turbo truck before 89. By what I have heard these truck where built for the railroad. Just looking for your guys input on wether you believe it or not.

deere country

Not that I am aware of. The only other diesel option I have seen in a full size dodge is the Mitsubishi diesel that was used in the 70s truck. It was a non turboed model.

Where have you been hearing this information from?

KRB

That's all I've ever known too. I thought it was a Perkins though but that is by memory.

Jim Lane

https://www.allpar.com/mopar/mitsubishi-diesel.html
It is true.

mknittle

There were some in International Scouts also.

tractorslayer

By what I had heard was that they built them with the Cummins motor but did not put a turbo in it and they were all shipped to the railroad. which makes sense because they had put the 12 valve into commercial use before they put them in the trucks. now my reason for asking is because supposedly my truck has injector out of a nonturbo 12 valve (bigger injectors). The reason for this is that my truck is one of the classicly modified 12 valves with an old smokey fuel pin and a bigger turbo turbine out of a bus.

james1

Thanks for posting. The article says "In 1978 and into the 1980s, Dodge sold, as a factory option, the Mitsubishi diesels in D150s, D250s, and Power Wagons..."

My collection of Mopar parts manuals goes back to '82 and it appears Dodge had ceased to offer the Mitsubishi diesel by the 1982 model year (see attached page).

u2slow

Anything is possible when custom built/ordered, repowered, etc.

FWIW, we have equipment like this at work... 4BT, non-turbo, automatic.

bigragu

You tweak the power screw on that at all, lol

u2slow

Nope The knuckle-draggers here have trouble operating the equipment with normal tuning. That's a sample pic... but ours has a 4.5L version, and looks like some sort of CAV mechanical pump.

mknittle

I used to have a Cummins book listing the industrial B series fuel pumps and injectors.
There is a bunch of them.

deere country

If you had a non turbo version b series engine it would not utilize "bigger" injection nozzles as it would not be able to properly atomized more fuel with natural aspiration. So that makes the story you have been told questionable in my view. I am curious as to where you had heard this from? As anything is possible, some things are just that a story someone created.

MrFusion

Sounds like a mixture of fact and confusion. I could easily see someone misinterpreting the late 70's Mitsubishi engine as being N/A Cummins 6bt.

mknittle

That's what I think.

oliver foster

I thought that was strange as well.
Less air and more fuel is a puzzling choice, unless rolling coal is the ONLY goal.
Just putting a plastic bag over your air cleaner will do that...