VP44 Information
 

Bosch VP44 Diesel Injection and Lift Pump for the 1998.5-2002 Dodge Cummins Diesel VP 44

:U:

okay,this must be where we post stuff relating to the VP,info,and where to buy eh?
I'm down for that.
Blue chip has some info too.
VP44 DIAGNOSTIC HELP

MWFI has the CPL tag location at the bottom of the page.
Dodge VP44 Bosch Injection Pump Cummins 5.9L 24 Valve

i have seen the hotrod version of the vp44 does this fix the common failures?

The HRVP is pretty much a dead issue. It's been proven to only be worthwhile in a very few select case where it is the only HP mod being used, other then that it takes power away from your other mods and is counter productive.

And makes it run like crap. A couple of buddies had the hot rod pump and they didnt like it.

k i can cross that out then so i have heard that u can p-pump the 24v is that converting it to the p7100 injection pump? and if so can sombody post somthing on that

HAVN,T HEARD ANY ON THE P-PUMP TO REPL. THE VP-44

there is a conversion kit to put a p7100 on a cummins 24V

if you go to puredieselpower.com they have the VP44 to the P7100 fuel lines and my suggestion is to find a p pump at a junk yard unless you want to pay 2500 dollars for a new one

Fueling limits of the HO pump is about 500HP
Fueling limits of the SO pump is about 600-650HP

remember you can put an SO on an HO and it will run and produce more power if you have injectors and box

So I am looking nat cummins diesels but have been avoiding the VP44 because of all of the woe which accompanies it. I want the run straight vegetable oil in it. Does anyone have experience with this? I figured this would be the place to ask guys abou their pumps since you all have em. It would be great if you would just tell me about your experiences and what you think about the pump. Also how much is it to get e new one? Also what should be done to get the most life out of a stock configuration (aftermarket lifter?)? Also were there any changes to the pump between 98.5 and 02 because I have heard the 01-02's were improved?
Thanks in advance
Justin(future proud cummins owner)

yeah, rotary pumps + WVO=baaaad....

if that's all you wanna run, i suggest you find a 98 12 valve...:U:

hey yall i got a 99 24 valve and i was on you tube and found this pump called the monster vp44 a friend of mine also told me about this. Where can i find these and could any body tell me a ball park price

If the shuttle sticks and the diaphragm stretches you can get a loppy idle which some claim is bad injectors (too big, etc.). This is not the case. The pump even over time - fed with a constant 15 psi can just simply wear out. Mine is like that on occasion.

I just switched out a hotrodded VP and replaced with stock. If you are not pushing over 550HP or so, the hotrod won't be doing much but rolling lots of coal and heating up your EGTs...

If you are running over 550 - 585 HP, then this is when to consider an hotrodded VP.

WRONG WRONG WRONG WRONG......
Maybe this comment caught me wrong, maybe i'm having a bad day but this is a load of bull.
The hot rod pump is a SO Pump head, HO Cam and HO computer....THEY MAKE NO POWER...
If your shooting for over 600 RWHP you better leave that SO on the truck....
A monster pump and hotrod pump are not the same thing.

What are the differences between a hot rod and monster? I was not happy with the longevity of the last unit at all with was "hot rodded". It was not a monster pump. :pca1::pca1::pca1:

I suggest putting that $500-1000 more for a hotrod pump and getting an SO pump. It will fuel you to 600-650HP

You can do a lot for $500

yes you can booooo lieve me

I agree the hot rod is only if you are pushing 550 hp or over otherwise is pointless

Most hotrods wont even push 500-550... they struggle above the 500 RWHP mark.

OK lets have a pros and cons Whats best for the HO truck page. Im in the dont wana HO
do I get a HRVP or SO-boat I have talked it over with some knowlegeble peeps and still on the fence.

Brady at II says go HR never look back says lots of people dont like the drivability of SOs Unless u run the smarty with it. Also says he wont accept a HO core if u order SO.

I guess the trade is longevity for lowend power right?

the new BD it supposed to be different than the others any truth to this?

What's the difference of a ho and a so pump? Sorry for my ignorance but I don't quite understand

HO = higher pressure ~550HP ceiling, advances timing better low end throttle response
think stroked engine
SO = higher flow ~650HP ceiling, responds better to the timing of a performance box, better upper rpm power. Think bored engine

HRVP think best of both. In theory it should be about 10% more fuel and more aggressive down low, but many dynos #'s don't support the extra peak HP. Some are very happy, some are not.

New VP 44 ??
 

Well looks like i just pulled the code from my truck and got a P1688. Died on the highway Saturday. I guess I'm going to try and save some money and do it myself. Not to sure on which type of pump to buy. If your spending the money should you get an upgraded aftermarket one? If I go with a bosch remanu. will this happen again? I was also told to install a fuel pressure gauge, how would that have helped this from happening? Thanks!!:hellox:

FP gauge is important to have to make sure you have enough fuel pressure and lubrication for the VP44. You will want to monitor it because a bad lift pump can make the VP44 work too hard and too hot and kill the $1000 pump.

so no body wanna help a brotha out? Still undecided I really hate to put a SO on because its not like the truck is a dyno queen its a DD and I dont spend much time on the top-end, I hate the slow spool of my SPS right now enough without a SO making it worse. So do I go back with a HO or go to a HRVP and if so do I use a II or BD so far only one bad pump sold by BD not that they have piles of them out there I expect less than a hundred so far...

rivercat,

tunnel ram will help spool up 50-100rpm
if you are not going over 500hp just get the HO and some 150hp injectors,
if you want more than 550 get a SO or to keep the lower rpm power get a hotrod. you can find them for under $1500. check out the best deals ever thread.

so based on what iv read so far on this thread. would an SO pump work on an automatic diesel? im usually running around 1500 to 2000 rpm with my truck because of the auto. :argh:

So pump isthe replacement pump for your vehicle. It is what I would recommend.

Yeah i wouldnt spend the money on the HR VP. Im happy with my HO its taking me over 550 with a single turbo so im happy

Hello i had a VP44 pump installed on my 99 dodge its all stock far as the motor it has a holley blue for a lift pump .My point is after this new injection pump was installed when i first start it and put it in drive it will lope for couple sec's and clear out it dont do it all the time and it is a auto anyone have any idea why it does this ? It never did it with the old pump before it went out...

possibly a sheared key way if you are getting white smoke that is likely, it would modify your timing and you might get a p0216 code. Sometimes low stall converters can have drivability at very low RPM and cause stalling or seem like it wants to stall. I have also seen issues with a bad TPS cause similar issues (I have nice ones in stock for less than 1/2 what the dealer charges). Without codes its tough to pin down.

huh ?

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If that reply was to me im not getting no white smoke or no codes flashin or coming up ? It Acts like i have big injectors in it but i dont ..

Getting way off topic. :s: