01 Got some cp3 ideas what do you think about...

J

J7 DIESEL

New member
Joined
Feb 1, 2008
Messages
209
Is it even possible to put a belt or gear driven cp3 on a vp44 truck for a supply pump. Kinda like a dual cp3 kit but with the vp. Does the cp3 build to much pressure to do this? Will it blow the seals? I can fabricate the brackets,pulley or gear for this setup but am curious. I have not seen this anywhere maybe bc it cannot be done. Let me know if its possible. Thanks
Jason
 
It would have to generate way to much pressure for what I'm thinking.

You wanting to use it for a mechanical lift pump basically right?
 
Figure out how to replace the VP44 with a CP3, then patent it. I would buy it!!!!
 
/\I have really looked into that. you have to have electronic fired injectors, ecm to do it the install the rail and custom lines of course. I think this is possible but then you almost have a common rail right. Thats kinda what I dont want, but would be cool. If you could get the electronics in the lines to open a gate of somesort you could still use the 24 valve injectors and cross tubes. I will do some more on this researching wise.



displaced Yea pretty much, if I put a slower rpm pulley on the cp3 I could lower the max pressure, But still do not know what size or the pressure the vp will take internally. This would be a slick fix for vp's starving but it could blow it smooth ace up too.
 
I'm no vp expert, but isn't it a pop-off style setup? The cp3 provides constant pressure, so you'd likely have to switch to the common rail head, injectors, rail, etc. Then you'd have to figure out the electronic end of it. Might still be better heading the other direction. p7100
 
Thats the easy way and most reliable but I want something different. I have to be difficult lol
 
The VP system will not handle the pressure a CP3 can make. It would be hard to properly distribute fuel to the injectors. As the rotor head in the VP controls the fueling functions, such as dwell and timing.

I think a better solution would be a common rail conversion for the VP trucks.
 
Wicked, would it not be the same as the 03 common rails if this conversion was done with head cp3 rail and injectors?
 
There are some differences, other than fuel, such as pistons, gear train. The CP3 is driven 1:1 with the crankshaft. The 12 and 24 valves are driven at 1/2 crank speed.
 
Ok that helps. If this was to be a added pump if you slow the cp3 way down with a smaller gear or pulley would the actual pressure output still be too much for the backside of the vp? THe reason for trying this is I have n ot seen it done and I feel that it can be if the preseure is not out of line. As someone said a p-pump would be the easiest and best bet but, this would be a neat setup and impossible to run the vp out of fuel supply. If mikes monster pump requires alot of fuel this would help. I would need to ask him if there could be some mods made internally to support this. Thanks
 
mmmmm......CP3

I like your thinking with a CP3 as a pusher, but it seems like a lot of work when a big electric pump(fass/raptor) would work just as well.

But keep thinking!! You may be on to something
 
Limited said:
mmmmm......CP3

I like your thinking with a CP3 as a pusher, but it seems like a lot of work when a big electric pump(fass/raptor) would work just as well.

But keep thinking!! You may be on to something
Click to expand...

:bang
 
just run a gear or belt driven waterman lift pump i dont think any vp44 will use 500gph
 
We've already got the hole setup for a cam driven lift pump. My mechnical lift pump from F-1 was giving me 50 psi cruising down the road before I put a regulator on it =P

I do think there would be interest if we could convert vp44 to cp3.
 
But he is wanting to use it as a LP, like a Mitusa...

You would have to have a HUGE pulley to slow a CP3 down enough to lower the pressure to feed a VP. Not sure what the output on a CP3 is, but it's WAY more than the 20ish that goes in on a VP.
 
I understand. I don't really think he's going to find an effective way to regulate 20,000+ psi down to < 20 psi, and even if he did the drag from running the cp3 would probably cost horsepower.

Like I said, cam run piston pump =) Doesn't get much simpler and its can provide more fuel than we can use.
 
You must log in or register to reply here.
Back
Top