I ordered a lift pump relocation kit from genos last night. I've got a new lift pump from cummins sitting behind my seat. Couldnt I just leave my present lift pump in the stock location and put the new one in at the "relocation location", therefore running two stock lift pumps? I am willing to wire the second pump on some sort of delayed circuit or even a manual switch.

 

I am running a Holley BLue pump on the frame rail in conjunction with the stock LP in the stock position. I get the relay harness from Eric at Vulcan.

 

Some sort of bypass around the lift pumps is a good idea, too--just in case one fails it won't become a restriction for the other have to push/pull through.

 

The updated lift pump (cant remember the cummins #) I have is supposed to have some sort of internal bypass to allow fuel to flow in the event the pump dies. Is that a good enough bypass?

Tiny, is this the same vulcan as the relocation kit I purchased. Do they have a phone # or web site?

I guess I am suprised that there isnt more discussion on aux pumps. The majority of the "solutions" I see are "just go with a fuel air seperator system...", or people seem to replace lp after lp after lp. I am not going to fork over 75% of the cost of a new vp on stuff to maintain a pesky 10psi prime pressure. No offense to fass, it is clearly the fix to end the fixes. I cant justify one. sorry about the rant

 

Hi Gambino
I think you will find plenty of threads on pusher/auxillary pumps in these forums.I`ve fitted a BD pusher pump on the frame rail,it comes with the necessary wiring and relay switch.I`ve gone down this route to give the factory lift pump an easier life,hopefully extending its service life and providing reliability to the fuel system.This setup is giving me 29psi at idle and 25psi at 70mph.
Also in the threads you will see discussions on pump pressures,some people saying that anything above 20psi could possibly lead to eventual failure of the vp44.I`ve had my pusher pump fitted for a couple of weeks now,so only time will tell

 

Yes I believe it is, but I do not have the web address at my fingertips. Sorry.

 

Here you go....

http://www.vulcanperformance.com/servlet/StoreFront

 

4090046 is pump kit from cummins

 

I ordered the relocation kit from Geno's and am running the 2nd lift NOT as a pusher, but as a parallel pump. I have to clean it all up and make it nice and neat tonight. After that I'll be checking out how stable the pressure is compared to before.

 

How much pressure is too much???

 

I bought a Cummins Campaign Pump and used GEno's relocation kit. I was impressed as a idle it is 15 psi, 65mph at 12 and WOT I couldn't get it to go below 5 psi. OF course this is a brand new pump ad who knows how long it will last.

If you don't want to go the FASS route, there is some potential with the Aeromotive 11203. I ran it on my veggie side and it also idles at 15 psi and 10-12 at 65mph, but here's the kicker....I was pulling a trailer and going up a hill at WOT I couldn't get it below 10psi. On my gage it bent to 9.5 psi and then found extra psi and went up to 11 and leveled out again. Almost like a NOS boost. Anyway, I only have 300 miles and will find out more in the next few months which will be 10,000 plus miles, but so far has potentail and only $170.00, so maybe it will be worth it.


Specs
Fuel flow exceeds 900 lbs. per hour @ 13.5 Volts -more than 150 gallons per hour.
Pump provides 18-20 PSI fuel pressure - perfect for high-G leaving cars.
Pumping mechanism features our proprietary composite rotor, stainless steel vanes, and precious ground, heat-treated steel plates.
3/8" NPT ports facilitate easy installation.
Alcohol compatible.
Ideal for dedicated nitrous fuel delivery.
Low amperage draw.

 

So far, with my parallel pumps, I idle right below 15, driving I'm around 14, and at WOT I can't pull it below 10.

My OEM pump was 12 idle and 5 WOT, so it's helped so far.

 

[QUOTE=BOILERMAKER]with my parallel pumps,

Hi boilermaker
If you have two pumps on one fuel line,surely one becomes a pusher.To run parallel pumps have you spliced in another fuel line?.

 

How about this. Is anyone running the intank setup then also running a pump in the old location up on the block too? I have been thinking about doing this as a means of not only a backup but also to take some of the stress off the intank setup.

 

Yes, I spliced into the "in" AND the "out" of the original OEM pump. Pressure is like voltage. Parallel gives you the same pressure, just more capacity ........ as long as the supply line is big enough to handle the flow.