My VP44 is toast. I'm looking to swap it to a P pump. It's a 99 4x4 manual. I've priced pumps, and the conversion kit from... Haisley(?). Anything else I need to know or buy before doing this? I have 2 diesel mechanic buddies that are helping, but I don't wanna tear it down in someone else's garage just to find out that I'm in need of _______ to finish it. Thanks ahead of time.

 

sorry I cant help you but you might be able to help the rest of us. I also have a 99 4x4 manual and when my vp goes I would like to upgrade to a P pump. I was wondering why dont you take pictures and make a how to as you go for the rest of us?

 

yes, yes pics and how to please I might do the same when my vp goes out too

 

I can try. My g/f has a pretty nice camera that takes REALLY good pictures. Just to let ya know, I priced Bosch P-7100's on Ebay at $750-$1000 and the swap kit from haisley is $1550 to $1800... then if you have a box of any sort, the pump will need work to match what you had also. I have an 80hp TST box on now that I have to compensate for.

 

Just talked to Jim Jessup and he said if you want to drive the truck and not just pull a sled with it it's a horrible idea. He's taken off 5 in the last 6 months at his shop.

 

I disagree. I'd get another opinion.

 

just do it, who cares what other people say, you can work out the bugs and daily drive it

 

Everything that people seem to have trouble with is simple tuning issues that I ever hear of. It's like they expect to be able to throw something together and expect it to work when it goes together just because it does go together. When done right, and tuned right, you should have no major issues and will love it, IMO.

 

Get another opinion, A p-pumped is plenty streetable.

 

So having 12 extra valves makes it a nitemare ? I beg to differ , theres no change in the make up of the engines cept the head having more valves and injector spray pattern

 

Listen to Rods. Notice his signature.

 

So, Rods, how bad was it when you did it? Your truck is also a pulling truck correct?

 

Are you planning on changing your injectors or having the pop-off pressures reworked? The 24V injectors pop at a significantly higher pressure than the 12V ones do. This is a large part of the reason why many people struggle to get the conversions to behave correctly. The p7100 is a great pump but it is not designed to put out as much pressure as a VP44.

 

I didn't know that. I'm really just thinking I don't wanna screw with it anymore. There just seems to be a lot of little things that you need to do.

 

question, if you were to keep the vp and lower the pop pressure on the sticks and have the electronics to adjust the pump accordingly could you help make the vp last longer and maybe potenitonally have the abbility to fuel at higher hp. Just a thought I may be way off. Anyone have ideas as to why this could or could not work