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

12 Valve to 24 Valve Swap

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Old Mar 6, 2011 | 04:07 PM
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Default 12 Valve to 24 Valve Swap

I bought a 1996 2500 5 spd with no engine. A sled pulling motor is in the works. In the meantime I want to swap in a 24V that is from a 2002 Auto, what do i need to do to make this conversion work?
 
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Old Mar 6, 2011 | 05:11 PM
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are you going to put a p-pump on it? or leave it electronic?
 
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Old Mar 6, 2011 | 05:16 PM
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if you want to leave it as a VP electronic motor you will need EVERY wire and plug from under the hood, the computer, and most of the wiring under the dash, the speedo cluster, all transmission wiring, the steering column, and a bunch of dedication.....
 
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Old Mar 6, 2011 | 05:21 PM
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Originally Posted by 97CumminsDiesel
are you going to put a p-pump on it? or leave it electronic?
Leave the 24 as is

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Originally Posted by Benjamin
if you want to leave it as a VP electronic motor you will need EVERY wire and plug from under the hood, the computer, and most of the wiring under the dash, the speedo cluster, all transmission wiring, the steering column, and a bunch of dedication.....
Really, that much of a pain? I do have all that, shouldnt need tranny wiring with a standard
 

Last edited by 02cummins; Mar 6, 2011 at 05:21 PM. Reason: Automerged Doublepost
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Old Mar 6, 2011 | 05:30 PM
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Originally Posted by 02cummins
Really, that much of a pain? I do have all that, shouldnt need tranny wiring with a standard
well you might need a manual tranny harness from a 24v truck for all the neutral safety stuff and speedo signal.

and yes it will be that much of a pain. why do you see everyone putting 12v's in vehicles and rarely anyone installing 24v VP electronic motors.....
 
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Old Mar 6, 2011 | 06:53 PM
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dont forget you also have to change the pistons and injector lines

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along with the injectors
 

Last edited by 94 12valve; Mar 6, 2011 at 06:53 PM. Reason: Automerged Doublepost
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Old Mar 6, 2011 | 06:55 PM
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Originally Posted by 94 12valve
dont forget you also have to change the pistons and injector lines

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along with the injectors
wait you dont still have to do that if your keeping the 24 valve together right? if he's transferring the 24 where the 12 was. that doesnt require piston and injector change does it?
 
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Old Mar 6, 2011 | 06:56 PM
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Originally Posted by 97CumminsDiesel
are you going to put a p-pump on it? or leave it electronic?
Originally Posted by 02cummins
Leave the 24 as is
Originally Posted by 94 12valve
dont forget you also have to change the pistons and injector lines along with the injectors
he is planning on keeping it as a 24V VP-44, NOT convert it to a P-pump, that is why it will be a wiring and electrical nightmare if this is the first time he has attempted this.
 
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Old Mar 6, 2011 | 07:05 PM
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Originally Posted by 94 12valve
dont forget you also have to change the pistons and injector lines

---AutoMerged DoublePost---

along with the injectors
Not a p-pump conversion, just wondering what it would take to run a 24V in a 1996

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Originally Posted by Benjamin
he is planning on keeping it as a 24V VP-44, NOT convert it to a P-pump, that is why it will be a wiring and electrical nightmare if this is the first time he has attempted this.
Yup, I do have a donor truck, but I'm thinking twice about it, seems hardly worth the time. Might as well concentrate on the project the truck is intended for. Would be nice to get the 24V off my shop floor and not have another truck without a motor taking up space...
 

Last edited by 02cummins; Mar 6, 2011 at 07:05 PM. Reason: Automerged Doublepost
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Old Mar 6, 2011 | 07:08 PM
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find you a 24v truck that has a blowed up motor you can get for cheap....
 
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