After the factory injection lines were being disconnected from both of those The top and VP44, Bosie capped off the feed tubes in The pinnacle and turned his interest toward the removing from the manufacturing unit gas filter reservoir.
Just as an engine might have its cylinders bored to incorporate displacement, the P7100 could be bored to just accept much larger plungers and barrels — Which’s precisely what occurs in the extreme phase from the diesel aftermarket.
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Back in the mid ‘90s, long right before prevalent-rail injection had debuted and horsepower wasn’t quite as uncomplicated to return by, this was the 4-barrel carburetor of the diesel world.
Heading past the freebie mods, the subsequent reasonable move is usually to Have a look at the pump’s supply valves. The shipping and delivery valves are positioned within shipping valve holders, the two of that are positioned among the plunger and barrel assemblies as well as the injection traces that feed gas to your injectors.
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As talked about, a 12-valve gear housing should be bolted into the 24-valve Cummins’ block so that you can furnish the P7100, however , you’ll also need the proper pump generate equipment, the suitable throttle linkage, a cam sensor adapter, P-pump support bracket, P-pump oil feed line and a complete host of other miscellaneous factors.
Using a gasket scraper, followed using a grinder Geared up that has a Scotch-Brite pad, Bosie taken off all leftover materials from the initial gear housing gasket.
We’ll note that Bosie organized both equally the rocker arms and press tubes exactly the same way they sat from the motor (so all have on factors would continue to be a similar when all the things went again with each PolarPump presale other).
I'd personally love to see additional P-Pump conversions as I much too would look at making this changeover. I have invest way much too muck $$$$$$ on VPs to even think They are really a tad superior.
Together with the occupation requiring the camshaft be pulled, Bosie dug into your valvetrain to gain usage of the lifters. Just after creating rapid get the job done of your rocker arms, the drive tubes arrived out separately.
Since the camshaft was staying pulled, Bosie was particularly watchful not to break any of the bearings. Due to the fact aquiring a lifter drop after the camshaft is taken off suggests you’re pulling the oil pan, Bosie inserted a 1.five-inch diameter pipe during the cam’s bore as soon as the cam was out, for additional insurance coverage. For both of those Road and Levels of competition purposes, P-pumping a 24-valve has extensive been regarded as featuring the ideal of the two worlds.
Opposite to what some would have you think, the P7100’s robustness, efficiency and dependability don't make it very simple.
Since the P7100 calls for engine oil to lubricate the governor springs and weights (compared with the VP44, that's lubricated only with diesel fuel), an exterior oil feed line is plumbed in.