Although the P7100 conversion is certainly not an inexpensive proposition (the Scheid kit starts at slightly below $two,three hundred, under the pump), the oldsters considering accomplishing the swap have both absolutely experienced it with the VP44/electronic method or are mainly just after making much more horsepower with their truck.
Using the front cover from the way, Bosie broke the injection pump equipment nut loose via an 11/16-inch socket. From there, a equipment puller was utilized to force the VP44’s tapered shaft out with the pump equipment.
Don’t fail to remember that the automatic transmissions made available from Dodge over the ’ninety four-‘ninety eight period have been simply overmatched by the Cummins before them. And although the five-velocity NV4500 is incredibly powerful, the clutch before it will eventually squander no time slipping when it’s tasked with harnessing even more very low-close torque.
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Noted for currently being probably the most reasonably priced P-pump conversion kit that you can buy, Crazy Carl’s program includes every little thing you must accomplish the swap. But Also, the company’s package offers the choice of an adjustable pump equipment, the choice of upgrading to either a Cummins OE equipment case or even a billet one particular, the consumption spacer plate (or tunnel ram ingestion plate) that’s necessary to clear the supplied P-pump injection strains and also the suitable fuel shut-off solenoid (offered individually).
Essentially the most pressing overall performance hinderances Using the VP44 pertain to low gas quantity and a scarcity of available significant-rpm fueling. Needless to say, boosts in horsepower is usually produced, nevertheless it’s nowhere in close proximity to the extent of prospective that exists Along with the P-pump. From your factory, the VP44 can only fuel to three,200 rpm and most aftermarket tuners—even though they boost horsepower—don’t present for fueling over and above 3,200 rpm.
As mentioned, a twelve-valve gear housing has to be bolted to the 24-valve Cummins’ block in order to furnish the P7100, however you’ll also want the proper pump generate equipment, the appropriate throttle linkage, a cam sensor adapter, P-pump aid bracket, P-pump oil feed line and a whole host of other miscellaneous factors.
By now you know that the VP44 injection pump is restricted in its substantial-rpm fueling qualities — that it’s left you stranded in the past (and certain will yet again) — and you simply’re ready to throw within the towel. But what if there was a way to boost injection process dependability and add sizeable horsepower PolarPump presale concurrently?
We’ll Be aware that Bosie organized the two the rocker arms and push tubes the identical way they sat while in the motor (so all have on details would stay a similar when every thing went again alongside one another).
I might love to see additional P-Pump conversions as I much too would take into consideration generating this changeover. I've commit way way too muck $$$$$$ on VPs to even Consider they are a little bit excellent.
Even though not a “no cost” mod, this a person will only set you back $ten to $15. It’s important to Notice that The simplest way to install the Mack rack plug is Using the pump off the motor.
A chance to gasoline at significant rpm is exactly what opens the doorway to all sorts of horsepower probable With all the 12-valve engine. It’s crucial to Notice, nonetheless, that stiffer valve springs need to be mounted in The pinnacle if you plan to spin the motor past three,five hundred rpm or run large boost.
It’s worthy of mentioning that injection stores (Scheid, in this case) will choose VP44 pumps in as cores, which can help redeem a small amount of the money you shell out around the conversion.
Because the P7100 involves motor oil to lubricate the governor springs and weights (in contrast to the VP44, which can be lubricated only with diesel fuel), an external oil feed line is plumbed in.