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While the P7100 conversion is by no means a cheap proposition (the Scheid package commences at just under $two,three hundred, lower than the pump), the folks thinking about performing the swap have either fully had it with the VP44/Digital procedure or are mainly immediately after building much more horsepower with their truck.
Also just like a miniature motor, the P7100 utilizes a camshaft. The cam characteristics one particular profile for every person plunger and as the cam rotates the plungers are pushed up and down inside their respective barrels. In Excessive horsepower apps, the cam Within the P7100 is swapped out in favor of the device with a far more radical profile.
Following the lines had been tightened up, Bosie went ahead and ran the valves and reinstalled the valve include.
Although the P7100 is reasonably complicated internally, it's vastly additional reliable in comparison to the electronic VP44. When persons speak about the five.9L Cummins’ million-mile longevity, it almost always revolves close to a 12-valve Variation Outfitted Together with the P-pump. In terms of general performance is concerned, the P7100 features you the chance to sport a 160hp truck or a person producing north of one,000 ponies with limitless higher-rpm fueling likely.
Recognized for becoming probably the most very affordable P-pump conversion kit that you can buy, Insane Carl’s process includes every thing you must complete the swap. But Moreover, the company’s kit offers the option of the adjustable pump gear, the selection of upgrading to either a Cummins OE gear case or maybe a billet a person, the consumption spacer plate (or tunnel ram ingestion plate) that’s necessary to crystal clear the provided P-pump injection traces and in many cases the right fuel shut-off solenoid (bought individually).
It brings together the extreme fueling abilities of the P7100 with the higher- owing 24-valve head. This not only delivers a considerable amount of additional horsepower probable on the desk, In addition it provides with it enough time-examined reliability of the mechanical, inline injection pump. For Stewart and a great number of other Cummins proprietors that’ve completed the swap, the P-pump is the greatest factor that at any time took place towards the 24-valve Cummins.
So what’s involved in the P7100 swap? Dozens of various sections, a substantial amount of time and loads of operate! Fortunately, Scheid Diesel delivers total conversion kits for making the process as seamless as is possible.
As with the return gasoline line leaving the P-pump, Bosie tailored a part of the VP44’s hard line, flared the top, and hooked up five/16-inch fuel hose. The return line tees in the factory hard line leaving the again of The top, near the firewall.
The gas plate controls the most gas output in the P7100, as well as stock unit is conservative to mention the the very least. Although there isn't a lack of aftermarket gas plate options (in addition to a lot of personalized-built, one particular-off versions), getting rid of the fuel plate entirely will yield far more rack vacation and sizeable electric power gains (ordinarily 35 to forty hp).
The star wheel is accessed via the best with buy PPUMP token the AFC housing, and changes really should be manufactured in pretty tiny increments. In case you go as well considerably, significant smoke will final result. Go also very little, and you won’t see the ability gains you’re immediately after. It’s up to you to uncover the appropriate equilibrium right here.
The holders grip the lifters and suspend them earlier mentioned the cam, permitting the cam lobes to apparent them in the event the cam is taken off. Prior to the cam was pulled, the lifter holders had been zip-tied in place, and after that zip-tied jointly in pairs.
As being the camshaft was becoming pulled, Bosie was very very careful not to wreck any with the bearings. Mainly because aquiring a lifter fall after the camshaft is eliminated implies you’re pulling the oil pan, Bosie inserted a 1.five-inch diameter pipe within the cam’s bore when the cam was out, for additional insurance policy. For each Avenue and Levels of competition apps, P-pumping a 24-valve has extensive been thought of as supplying the most beneficial of each worlds.
A unsuccessful PSG (the pc that’s affixed into the pump), rotor seizure, diaphragm failure, a worn out distributor or a lack of gas provide can all kill the VP44. Extreme heat, miles and a few key inferior interior parts are essential contributors, but any time the VP44 sees 0 psi of provide tension through the lift pump it’s not lengthy ahead of it checks out.
Having said that, the 24-valve Cummins is infamous for its insufficient large-horsepower ability and also the dependability of its injection pump—the Bosch VP44 staying at the middle of both of Those people troubles. The last word deal with for your useless VP44 or even a craving for significant horsepower has always been to show on the established P7100 (i.e. P-pump) that came common within the twelve-valve five.