?'s about P-Pump on 24V

[Bpostel]

I was wondering who has done this and what there thoughts were after the install, pros and cons. Is it very streetable? I'm looking to do this for mainly sledpulling and reliability, but the truck is also my daily driver for now. So it has to run decent on the street. Thanks for any help you can give me.

Brent

 

[Jeff Clark]

Many have made the conversion, and it's more reliable than what you have now. The only con I can think of is the cost.

 

[Jetpilot]

Everyone worries about the VP-44... ... Actually it is a very good pump, there are failures but it is not the norm. The p-pump conversion makes for a heck of a truck when set up right and tuned. It takes lots of time and effort to get it to perform correctly. You are also stuck with a one of a kind type vehicle that becomes much harder to sell, have worked on, or get parts for.



If all out HP is what you want then a p-pump is the way to go. But, if what you want is a great driving truck with variable timing, good mileage, etc then stay with the vp-44.



Doug

 

[Bpostel]

Thanks guys for the replies. Hopefully some more members will chime in so I can get there thoughts. I am looking for HP, but also have some street manners. Trying to get this truck ready to run in the street class next year. Would like to have the p-pump on mainly for the RPM's and reliability. I know redline has the box to run 4,000rpm's but it looks like it's going to be hard on the VP-44 and for the money I can have 1/2 the parts for p-pump conversion.

 

[mattymac]

I have no experience with a P-pumed 24v but I would say do it right the first time and you will be happier and in the long run could cost less in replacing damaged overstressed parts.



Just make sure you are familiar on tuning a p-pump cause Ive heard that they are tougher to tune on a 24v.

 

[RonA]

Amen.



RonA

 

[Bpostel]

Anyone else out there running a p-pump on a 24V that wants to talk? There has to be somebody out there thats running around with this done. Please fill us in.

Brent

 

[sbentz]

If you are running over 50% of the time on the street, stay with the VP. . If you REALLY love to play and tune go to the P.



You will spend a lot of time finding the right injectors and torqueplate match. Once you do? Hang on.

 

[RonA]

I'm running one on my truck. And am right in the middle of the before mentioned injector and tuning phase. This is my first Cummins powered pickup. I like what I am seeing with the conversion, but it isn't like you read the add, buy the parts, put em in and go. There always seems to be alot of head scratching and chin rubbing accompanied by numerous "hmmmm... . s " and " I wonder ifs". I don't think you can justify it by saying I don't trust the VP44 though. For the price of converting you could easily build or buy twins and add a FASS or RASP or Preporator and probably be trouble free and enviously powerfull. Without alot of headaches.

RonA

 

[Bpostel]

RonA,

Keep us posted on how your conversion is going. I know there will be alot of testing and tuning, but that will be part of the fun, ecspecialy when you really get it to scream. Not sure yet if I'll do though conversion yet or not, just trying to get all the info I can. Mainly doing this for sledpulling to get the RPM's. There's going to be alot of top trucks in the street class this year, just trying to be able to stay close to them. Thanks for the info.

Brent

 

[TxDieselKid]

I don't think you can justify it by saying I don't trust the VP44 though. For the price of converting you could easily build or buy twins and add a FASS or RASP or Preporator and probably be trouble free and enviously powerfull.

And then there is Merrick, who has spent so much on faulty VP44's that he could have converted to a p-pump, and bought twins.