In an effort to locate an inexpensive replacement for GT pumps, I recently put together a test rig in order to check the flow rates of a GT pump compared to a Walbro F10000137 pump. I talk about that in a little more detail here: http://www.svtperformance.com/forum...ptions-what-you-need-know-2.html#post11659739
But I have been thinking recently. There is a lot of information/mis-information regarding fuel pumps on the web. Part of the problem is that pumps are tested under different conditions. I've seen tests done at 12v, 13v, 13.2v, and 13.5v. I've also seen tests done at free-flow rate (ie no pressure), 40psi, 60psi, etc. These differences have a pretty good effect on the output. In the link above, you'll see a GT pump can flow 225lph and up to 260lph with just 1.5v more.
The other problem is that people forward the information without the testing procedures. So one person could say a GT pump flows 260lph while another says it flows 225lph. They would be both right. But without the additional information, one might compare lph rates with a pump running 12v@40psi and another pump running 13.5v@free-flow.
What I propose is having popular fuel pumps tested on one rig and under similar conditions. The pumps I would suggest are:
However, I would be open to others. I already have a Ford GT and a F10000137 pumps with a few data points already recorded. For test procedures, I would suggest running the tests at 12v and 13.5v, and running the pumps from 20psi to 80psi in 10psi increments. Since pumps typically run at a minimum of 30psi in a car, there really isn't much of a point testing them at or near a free flow rate. And 80psi would represent someone running a car with a base pressure of 50psi and 30psi of boost; little extreme and not very likely. I believe the bread and butter info is between 40psi and 70psi.
My request from people would be your willingness to loan me the above listed pumps for the testing. Between my willingness to perform the tests on pumps and others' willingness to provide the pumps, I believe the result would be a kick-ass, one-stop, accurate reference for the differences between popular pumps.
How does that sound? :beer:
But I have been thinking recently. There is a lot of information/mis-information regarding fuel pumps on the web. Part of the problem is that pumps are tested under different conditions. I've seen tests done at 12v, 13v, 13.2v, and 13.5v. I've also seen tests done at free-flow rate (ie no pressure), 40psi, 60psi, etc. These differences have a pretty good effect on the output. In the link above, you'll see a GT pump can flow 225lph and up to 260lph with just 1.5v more.
The other problem is that people forward the information without the testing procedures. So one person could say a GT pump flows 260lph while another says it flows 225lph. They would be both right. But without the additional information, one might compare lph rates with a pump running 12v@40psi and another pump running 13.5v@free-flow.
What I propose is having popular fuel pumps tested on one rig and under similar conditions. The pumps I would suggest are:
- Stock 03/04 Cobra
- Stock GT500
- Ford GT
- SVT Focus
- Aviator
- Walbro GSS342
- Aeromotive Stealth 340
- Walbro F90000262 (400lph)
- F10000137
However, I would be open to others. I already have a Ford GT and a F10000137 pumps with a few data points already recorded. For test procedures, I would suggest running the tests at 12v and 13.5v, and running the pumps from 20psi to 80psi in 10psi increments. Since pumps typically run at a minimum of 30psi in a car, there really isn't much of a point testing them at or near a free flow rate. And 80psi would represent someone running a car with a base pressure of 50psi and 30psi of boost; little extreme and not very likely. I believe the bread and butter info is between 40psi and 70psi.
My request from people would be your willingness to loan me the above listed pumps for the testing. Between my willingness to perform the tests on pumps and others' willingness to provide the pumps, I believe the result would be a kick-ass, one-stop, accurate reference for the differences between popular pumps.
How does that sound? :beer:
