Fuel system thoughts

[DoWhat?]

First let me say that I know next to nothing about the VE pump. Just enough to be dangerous.

Why couldn't I run a 5/8" regulated return fuel system with an A1000 (or similar) pump on my Dodge?

I see that the fuel line going into the pump is tiny, but i don't see why it couldn't be drilled out and tapped to take a larger fitting. Where could I tap into the pump for my return? Would this even work, or does the pump have some sort of internal pressure metering device that would have a sthi fit if I gave it way too much fuel?


Seems to me if you ran a system like that you could move plenty of fuel through the pump to keep in lubricated and cool, and you would never be able to suck it dry.

thoughts?

[RSWORDS]

First let me say that I know next to nothing about the VE pump. Just enough to be dangerous.

Why couldn't I run a 5/8" regulated return fuel system with an A1000 (or similar) pump on my Dodge?

I see that the fuel line going into the pump is tiny, but i don't see why it couldn't be drilled out and tapped to take a larger fitting. Where could I tap into the pump for my return? Would this even work, or does the pump have some sort of internal pressure metering device that would have a sthi fit if I gave it way too much fuel?


Seems to me if you ran a system like that you could move plenty of fuel through the pump to keep in lubricated and cool, and you would never be able to suck it dry.

thoughts?

I belive the metered return in the VE is VERY important to it working properly. Cant remember why but maybe something to do with timing...

[DoWhat?]

Hmm I kinda suspected that. These pumps don't have any kind of external return, do they? Anyone have a pic or diagram of how the fuel feed to the pump runs?

My ford just sends all the unused fuel back to the tank. I guess there is no reason that I couldn't put some kind of T right at the fuel feed and regulate it there. Seems kinda rediculous to run a big fuel line with that stupid little inlet though. Still, the idea seems like it would work, and you could boost-refrence it to increase the fuel pressure when its under boost. I know that it takes 5/8 lines to feed a thirsty (400+ hp) Powerstroke, so I can only imagine that a cummins would need the same. Especially once i figure out how to get the Rpm's I want out of this thing.

Also, what pressure do the seals push out at? Is there a steel or copper gasket they can be replaced with?

[RSWORDS]

Hmm I kinda suspected that. These pumps don't have any kind of external return, do they? Anyone have a pic or diagram of how the fuel feed to the pump runs?

My ford just sends all the unused fuel back to the tank. I guess there is no reason that I couldn't put some kind of T right at the fuel feed and regulate it there. Seems kinda rediculous to run a big fuel line with that stupid little inlet though. Still, the idea seems like it would work, and you could boost-refrence it to increase the fuel pressure when its under boost. I know that it takes 5/8 lines to feed a thirsty (400+ hp) Powerstroke, so I can only imagine that a cummins would need the same. Especially once i figure out how to get the Rpm's I want out of this thing.

Also, what pressure do the seals push out at? Is there a steel or copper gasket they can be replaced with?

Lots of guys are boost referencing the feed

[fergavs]

Ya its a good idea to open up the feed to the pump. As well you can feed the pump 25psi+ with only a snap ring added to the outside of the shaft seal. Boost referencing is perfect as its always good to add some pressure as demand is increased. As far as the return just get a FPR with a bypass that returns the fuel to the tank. This way the pump and injector retuns function as normal and all the extra fuel will get returned by the regulator. Pretty much what you were already thinking.

[dpuckett]

The Dodge has a return back to the tank as well.

The return banjo bolt helps regulate the internal case pressure, IIRC.

DP