Ok, This weekend a completed the end of my lift pump journey. When I first bought my truck, I read about the problems with the lift pumps and decided this was an area I would have to address. After looking for an economical way to help the lift pump live a longer life. I came a cross a thread over in the TDR web-site, which describes making a lift pump into a transfer pump. I was really impressed with the psi numbers posted, just by moving the lift pump from its stock location and changing some fittings.

Let me also mention I researched the FASS system and others, but this was just too expensive. It might be a better system for those who can afford it.

The task itself really sounded like more than I could handle. All anyone has do is to commit to the idea of cutting the stock SS fuel line. Come up with a mounting location and design a bracket to fit. The rest of it is pretty straight foward. It took me a total of 3 1/2 hours to move the pump. I'm not a mechanic by trade and I wasn't trying set any kind of record. I really enjoyed doing this project. The only snag I hit was in making the wire harness. I crossed up the positive and negative wires at the other end of the harness, lesson learned. Mark your wires so they won't get mixed up.

End result, by moving the pump. I now have 14.5 psi at idle, cruising at 75mph is 12-13 psi, at WOT I couldn't pull it below 11 psi. With old lift pump in stock location I had 12 psi at idle around 9 or so cruising and 6 psi WOT. These number might change if you add a fueling box or injectors. I don't really know as my truck is stock, except BHAF and 4" exhaust. In hind-sight I should have installed my original pump to see how numbers changed . I might still do this and report back with numbers.


I bought my fittings (3/8 hose barbs and metric adapters from Jegs) cost was $26.00 with ship/handling. Fuel hose was around $ 24.00 for 15 ft. Mounting bracket free, just my time. Waterproof wire connectors, $ 2.50 flex tube to wrap wire was like $4, pigtail wire harness from Cummins $ 6.75, fresh lift pump $158, old lift pump still good but it was the old style original pump, I kept it for back up.

I also made my own high flow banjo bolts, real easy. I used the size smaller than 3/16 ??? first, than made final hole size with 3/16 drill bit. Deburred with my Drimmel, done.

This might not be the end all cure all to the lift pump saga . It seems pretty good so far, only time will tell the rest of the story. I'll post some pic's soon in my gallery.

 

Nice, Sounds like I am gonna have to do mine.

 

Mike do you have a link for that thread on TDR?

 

Here you go.Link

Let me know if you have any questions.