Dual VP44's

If you are only pulling 2.6, why do you need 2 VPs? There are competitive VP trucks in the 2.6 class and they are only using 1. $.02
 
Highfinance97 said:
I'd like to see it done

Untill then..ill believe it when i see it
Click to expand...

Call John at Floor it diesel. He's got something interesting to tell you....

There was a comment somewhere about tig holding 20k pressure. Where in the injection system of a VP44 are you seeing 20k pressure? The injectors open at between 255 and 300 bar depends on whos injectors you run. That's around 4,800psi. It don't need to hold 20k. Driver elements are the issue, mainly inieing them together.
 
Pop pressures and peak injection pressures are different things; peak pressues are commonly two-to-three times pop pressures. I don't know if they're rated at 20,000 PSI peak but they're in that range, and I'd imagine that the hot rod ones are putting out a bit more.

The injection control valve on the pump only has one wire going to it, right? I'd think that tapping into it, putting it through a solid state relay, and delaying it a couple milliseconds with a capicitor would be pretty easy.

The timing isn't quite as delicate, but that's only controlled by one wire as well I do believe.
 
My brother has talked to john and has talked to him quite a bit about my VP truck and john never said anything about having something in the works for the VP, but i could be wrong.

John is suppost to be coming down to put my bro's new cp3 on, i will talk to him about it then!
 
Front gear case for dual VPs. I know he has that. From there what he tells u is up to him.
 
it would be very interesting to see it done, but deffinatly not worth the money for another vp44. sounds like a big headache to me imo....p pump it and just be done with it. ive never herd of a p pump putting someone out of the 2.6 class.
 
I would think that you would get more duration, smoother power, better governor control with dual VP44's.

Totally not worth the R&D, but if the stuff was out there to buy it would have its advantages.
 
Edit: Dgeman beat me too it.

I wonder if you would upsize the line after the Y?



Remember: "Research is the difference between speculation and investment"
 
P pumping a 24v truck kicks you out of street class because you are not running the factory fueling system, that puts you straight into mod class.

The electronics don't so much worry me, if anything they are encouraging.

Right now making the proper case mount and gear to drive the secondary pump are the part requireing the creativity.
 
If you have the time and money then I say do it! If it works then you will have saved the VP44 and then companies will most likely start putting out more parts for the VP44 and then make full kits for dual VP pumps.
 
I just don't get it, it sound like fun, but

Dual VPs = twice the unreliablity ???
 
Really,, How unreliable are they? You replace one every 100,000miles?

Dual VP's = Twice the fuel, and with some fancy programming (changing timing independently) you could alter the injection duration,, so technically, you could tune timing, and duration....

It's for the fuel...

Merrick
 
You could have both feed all 6 injectors, so if one fails it could still run.
 
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