Engine/Transmission (1998.5 - 2002) p7100 pump

[Moe]

Anyone have thoughts on changing from a vp44 to a p7100? Im not looking for a hotrod, just reliability. I never had a p7100 fail in the 2 12v trucks I owned. The 2000 truck I have now will be my last one. I am going to make this one last forever! Thanks Moe

 

[grimesja]

I am considering doing the same thing. Most of the people I have seen do it on competition diesel are pulling sleds, etc... I have asked the same question about a daily driver P-pumped and haven't received a lot of feedback.

 

[SNiebaum]

lots of guys are also daily driving the swap... . I'll tell you all about it next month after we've done my truck.

 

[Mokerz]

I did it on my truck. Love it, hardest part is figuring out where to set the timing. Also, if you have a fass, you will have to get a different pressure spring for it. If you are running a regular lift pump, you will need to change that. As for the injectors, I just had the stock ones re-poped by the local bosche shop. I put in a Helix 2 with the extra lobe so I could run a mechanical lift pump and just moved the ECM. The cam, the high pressure lines (shied), the fuel suction lines (made them myself), and the intake spacer plate (shied) are the only non cummins parts I think I used in my swap. Truck dynoed at 325hp 803ft/lbs. Think it could use some timing yet. As a side note is much easier/faster/possibly cheaper just to drop in a 12v motor.

 

[FosterW]

It is a somewhat involved job and price adds up quickly. If you do it "right" the first time with a P7100 swap, you could have bought 3 VP's. So you have to weigh how much you really want the mechanical reliability.

 

[Mokerz]

3vps is about right.

 

[SNiebaum]

lots of guys are also daily driving the swap... . I'll tell you all about it next month after we've done my truck.

mine has now been done for about 4 days and I've been driving it just like I normally would. Nice driver, actually a little more street friendly than my VP setup even though I have access to way more fuel(conversion Mach 7's and a benched 450cc P7100)... afc tuning is critical but it does drive very smooth... and I have a guaranteed 4k rpm... . Oo.

 

[Moe]

Try to post some pics. This is something Im really interested in. Moe

 

[SNiebaum]

Try to post some pics. This is something Im really interested in. Moe

What types of pics are you looking for?

 

[Dieseldemon]

I have one in my shop that I converted a while back and am going to put it into my 98 12 valve I used a 12 valve cam for the lobe to drive the mechanical lift pump runs good on the stand.

 

[Joe Mc]

Was reading this the other night

98. 5-02 24V P-Pump Conversion - Dodge Cummins Diesel Forum

Lots of good info.