12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Differance in a Dodge 12V and a bus 12V

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Old 12-23-2017, 12:19 AM
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Default Differance in a Dodge 12V and a bus 12V

Hey Guys, I've been hanging around for awhile and I have some questions .

I've been looking for a 12v or a 24v to do a swap into a project. I've been finding some cummins motors out buses or F700 trucks. I was wondering what the differences are with these motors versus one in a Dodge pick up. Attached is a representation of the vehicle that it's going in.
Thanks your input


Differance in a Dodge 12V and a bus 12V-594.jpg
 
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Old 12-24-2017, 09:22 AM
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The main issue/difference is that some of the injection pumps in yhe heavier straight trucks had 11mm barrels and plungers. Dodge trucks all have 12mm
 
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Old 01-07-2018, 08:50 PM
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Originally Posted by turbo2332
The main issue/difference is that some of the injection pumps in yhe heavier straight trucks had 11mm barrels and plungers. Dodge trucks all have 12mm
A lot of the ones I'm seeing have P pumps on them. I don't know if that makes a difference or not. I'm some what new to the diesel world. I've been bitten by the diesel bug and I like it.
The vehicle that this is going into is going to be a camping/tow and just general use rig.
I have one of two 5spds to put in it. One is NV 4500 or a Getrag.
 
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Old 01-13-2018, 03:57 PM
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What do the ones that don't have p-pumps on them have? The old rotary style mechanical injection pumps can be turned up too, but generally, the p-pump is the better catch. The NV is a pretty stout handshaker, and doesn't take much to improve unlike the auto's Dodge thought would be fine behind a Cummins. The Getrag could be one of about a half million alternatives, not sure what to say about that option. What's it out of?
 
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Old 01-14-2018, 10:04 PM
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JBearSVT Thanks for the reply.

The ones that don't have the p-pumps on them I'm guessing they have the rotary pumps. I've been looking at both first and second gens. Also looking into both 12 and 24 valves.
The Getrag that I have is out of a 93 4X4 that had a cummins in front of it, the same for the NV4500. I only have one transfer case for the two. The NV4500 is out of a, I believe to be a 94 4X4.
 
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Old 01-15-2018, 03:53 PM
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Either trans should do then. I'd lean towards 12v for conversions, because you can make them run in just about anything. 24v is a little more complicated. And unless the price is hugely different (like, at least a grand more) I'd never take a rotary pumped engine over a p-pump. And to clarify that statement, I'd only take the rotary if it was that much cheaper because then I'd have the money to p-pump it.
 
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Old 01-19-2018, 09:37 PM
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https://eauclaire.craigslist.org/pts...433622138.html

This is one of the ads for engines in my area that I've been looking at.
 
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Old 01-20-2018, 08:54 AM
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Seems to me for that kind of money you aught to be able to find one that didn't come from a bus or have critters living in it for an indefinite number of years, but I've never looked for one.
 
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Old 01-28-2018, 07:04 PM
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The main thing I'm asking is what's wrong with using one from a bus vs using one from one out of a Dodge pickup ?
 
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Old 01-28-2018, 07:44 PM
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Nothing, beyond there maybe being more parts to source to make it work, but based on what it's going in it might make no difference. I believe most of the stuff that bolts on was different between applications, but the 12V is going to pull hard either way.
 




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