mod vp44

[DCreed]

ok guys, lets do some fixin' . all trucks made from 98. 5 to '02 have a common #@$%! problem . the technological wonder the VP44. its purpose by design is to accuratly proportion fuel to engine needs . sensors around the engine feed the ecm info it then sends adjustments to the pump . it then alters the flow of fuel into the chambers and the cam presses this fuel charge into the lines/injectors which "pop" and spray the excess fuel into the engine. thats the simple version ,but it doesnt seem such a stretch that a more reliable pump with perhaps better performance could be made by now . i know the hrvp44 exists but it doesnt have an impressive life span. the p-pump and common rails have fairly reliable pumps why not us? racers commonly retrofit p-pumps to 24valves to get simple upgraded reliable performance. not good for emission friendly street trucks, ive yet to see a common rail retrofit perhaps using most of the stock electronics to lessen expense. i know im not alone in this thinking so where are these solutions?? the trucks are almost ten yrs old and STILL plauged by these problems!! cant SOMEBODY step up to the plate and help us ? dare i ask,without a prohibitive cost? anybody?

 

[rweis]

There are more than a few threads on this subject.



Older VP44's have been rebuilt with new Bosch updates (steel advance piston is a notable one).

Better filtering

Better lp's

Better psi monitoring

Better temperature control



They VP44's that are rebuilt and fed correctly seem to be doing well.



Bob Weis

 

[DCreed]

thanks i just meant alot of research is going into "monster 44's" but at the same time the larger output versions dont seem to live long. with the new 62/14 i may need to go hr44 but not if it wont be reliable. we cant forget the main reason these trucks are so great 500,000 miles and still going. we need to keep it that way!

 

[SNiebaum]

but at the same time the larger output versions dont seem to live long.

Where are you getting this information? I haven't really seen many people commenting that the failure rate is more or less than a stock VP.

 

[DCreed]

Where are you getting this information? I haven't really seen many people commenting that the failure rate is more or less than a stock VP.

try reading "monster vp" in comp forum

 

[SNiebaum]

Where are you getting this information? I haven't really seen many people commenting that the failure rate is more or less than a stock VP.



try reading "monster vp" in comp forum

I have been following it since day one on this board and others. I don't see people commenting that their HRVP-44 has taken up sleeping with the fishes anymore than someone with a stock pump. In essence, the hybrid pumps are as reliable as the stock pump... whatever that is worth.



The comments about reliability are about the yet to be released 'monster' pumps... my opinion is that people are asking for something that inherently isn't possible with the VP pump... . unlimited reliability(with warranty), with exponentially increased flow for little cost...

 

[CanadianCarGuy]

I think the HRVP44 was well worth the extra couple hundred bucks for the extra 3 mpg alone!! As for reliability, no problems yet 15,000 miles and counting. It also starts easier with the HRVP.



As for the monster VP being not as reliable, yeah sure it wouldn't be as reliable making that much power! I'll bet most of the monster VP failures were because of inadequate fuel supply. Even a 200GPH lift pump probably won't cut it at those flow rates! And the diaphram will only take so much pressure until it ruptures! I haven't been around any of these "monster VP's" yet, but I sure would like to see how they are fed their fuel.

 

[Gary - K7GLD]

Where are you getting this information? I haven't really seen many people commenting that the failure rate is more or less than a stock VP.



try reading "monster vp" in comp forum

That info has come direct from both Blue Chip and Industrial Injection in past threads on this very board...

 

[DCreed]

thanks,gary havent been able to transfer a direct quote yet.