View Full Version : Holley Pro-Jection fuel pump p/n, source?
06-13-2008, 12:30 PM
Have an analog Pro-Jection (with closed loop kit). It's not getting gas. Fuel pump is running but not pumping. I disconnected the lines, ran a piece of hose into a gas can, still didn't pump. So, Unless I'm missing something, I'm thinking the fuel pump is toast.
What is the replacement in-line fuel pump for this setup? Is there a non-Holley pump I can use that's cheaper than a Holley brand part?
Thanks for any advice,
06-13-2008, 03:04 PM
Good luck finding an alternate pump. Problem is that aftermarket TBI pumps usually run ~25psi, while most OEM pumps run ~40psi.
Holley part # should be 512-104
06-13-2008, 04:55 PM
The fuel pressure regulator takes care of the pressure. One brand of replacement pump is Airtex/Master, pn E2000. AutoZone carries them at $102. There are others out there but I don't have the numbers.
06-13-2008, 05:56 PM
well the one i ordered from www.partsamerica.com (http://www.partsamerica.com) was 12-927 it replaces the factory #'s
r u sure you had the right end hooked up? the terminal side is usually the output on these pumps!
my vatozone said they couldnt get that pump no more! so good luck...oh and btw mine ran me $147
06-13-2008, 06:29 PM
If I had to do it over again with the Projection setup I'd get a 25 psi TBI pump and then run an adjustable regulator.
06-14-2008, 12:05 PM
Thanks, guys. Just to be clear, the truck was running on this pump for a long time. And yes, the terminal side is the output side.
The truck quit and it's not getting gas. It is sort of odd that the pump runs, but doesn't pump. I'm figuring something is broken inside? I was reading that some of these pumps can be hard to prime, so first I pressurized the tank. Nothing. The I disconnected the ouput line, pressurized again. Nothing. So, then I disconnected the input line, there was a crusty looking pre-filter, so I pressurized tank again to make sure that wasn't clogged and fuel was available, and got gas all over the garage floor:rolleyes:.
That's when I ran a hose from input to a gas can, and still no gas pumping through. Don't feel any suction if I put my finger on the input when the pump runs. Don't know what else it could be.
06-15-2008, 02:07 AM
You can run the masters E2182 or E2000.
The tbi system is a full return system and as mentioned the regulator sets the pressure, not the pump.
It just needs to be able to produce the required pressure.
The Masters pumps are able to run up to 95psi and work well in TBI and MPFI applications.
ALWAYS run a filter like a fram G3 before the pump and change it regularly.
I have yet to lose a pump in any of my conversions.
06-29-2008, 09:54 AM
Thanks again, all, you gave me some new angles to think about in targeting my searches here and elsewhere. Wanted to let you know what I came up with. I came across a couple people who said the E2000 pumps put out too much pressure for the Holley's regulator, so I bought a Carter P5001. Here's Summit's description:
"These inline TBI fuel pumps from Carter are ideally suited to allow the installation of throttle body injected engines that were previously carbureted. Designed to operate applications with system pressures between 9 and 22 psi, they are flow-rated at 50 gph at 20 psi. These pumps will function with the existing OE fuel pressure regulator. Step-by-step installation instructions are included."
Since the Pro-Jection runs on 11 to 18 psi, IIRC, this sounded good to me. Summit has them obviously, and I was able to order one overnight from my local Murray's Auto Parts. The application is a universal pump for TBI.
I ran some new lines, hooked it up, and it primed instantly. Runs good, I've road tested it a few times, took it out on the highway, etc.
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