Anton

Thanks for the info Ed. These walbros sound like a great alternative. I used to use similar pumps in my days of off roading Suzuki 4x4s - we would get them off of full size ford vans and trucks, mounted on the frame rail. I suspect these walbros are very similar. As for the relay - I recall reading about a check engine light being displayed if a relay is used to run your fuel pump. Apparently the ECM detects low current draw and it is displayed as lift pump failure. Have you had this problem? If so how did you fix it? The bypass valve you're using looks like a perfect unit for these setups. Have you ever tried plumbing the bypass back to the low pressure (inlet) side of the pump(s)? While I agree it's better to have it returning to tank, I may try plumbing it directly back to the inlet side of the pumps so it's contained in one compact unit. This will be essentially the same as the internal bypass found in the Holley's. Plus, this will eliminate an additional line to the tank(s) making it easier to have an auxiliary tank. I'm currently planning out my auxiliary tank setup. Tank will be a toolbox/tank combo in the box of truck. Stock tank or aux will be selected via a 12v solenoid valve such as this one: http://www.princessauto.com/hydraulics/valves/accessoriesy/8051799-12-vdc-selector-valve. This will actually allow a single pump setup, however I like the added peace of mind of your redundant pump setup and would probably do the same. Water separator/pump/filter/bypass will be contained on a mounting plate, removable as a module to facilitate service. This is what I'm planning for my next fuel pump setup. The holley HP150 is disappointing me already. Holley used an o-ring seal on one side of the pump's port plate, and a cheap gasket on the other. The gasket, combined with the uneven 3 bolts that clamp it together, is already resulting in leaks!

Great looking setup Ed. What type of relief valve / bypass valve are you using for regulating pressure? I am looking into building a setup similar to this with dual pumps, one dedicated to an auxiliary tank. Have you ever had a pump apart? I'm curious what type of pump it is. Are the pumps wired through a relay, or direct to the stock harness?Thanks,Anton

Thanks for the comments. Summit Racing sells the pump for $215. It comes with a pressure reducing valve - which i did not need - however it can't be purchased without it. http://www.summitracing.com/parts/HLY-12-150/ I selected a filter base that utilizes a Cummins filter, Baldwin #FB1311. The one pictured is a Donaldson P562262, due to availability and cost. I am using a Luberfiner LFF5 fuel filter on the suction side, and the stock fuel filter before the injection pump. Fuel/water separators can also be used on this base, Cummins FS1212. The filter base is a quality unit and has -10 ORB (o-ring boss) ports instead of the inferior NPT. The o-ring creates a positive seal every time, with no sealants required for a clean installation. I opted not to purchase an airdog or fass, largely due to parts availability. An HP-150 can be purchased at any major performance warehouse, as well as service parts. Upon initial installation I was getting low pressure, around 10psi dropping to 7. The relief valve setup is almost identical to that of a Holley Black or blue pump, and can be tweaked using different springs. Replacing the spring resulted in a solid 20 psi with little to no pressure fluctuation. I have not tried the adrenaline on 10 yet, but I do not anticipate a problem - the holley black had no problems maintaining 10+ psi on level 10. This pump is very quiet even at 20psi. I cannot hear it over the engine running. The Holley black however, is noisy and can be heard at idle.

Installation is complete of the Holley HP150 Fuel Pump. This was an upgrade from a Holley Black type fuel pump. Main advantage of this pump is that it's a gerotor style gear pump. Gerotor pumps are long lasting and smooth, quiet running. Holley blue is a vane pump. Gerotor gear set Compared to the vane style of blue / black pumps Comparison Old setup below; new setup above. Installed Installed