Fuel pump test
To get an accurate test with the fuel system installed on your vehicle, do you just disconnect the return line and run it into a bucket with the car running? What is the best way to supply running voltage to the pump? An adjustable external power supply, maybe?
Prob regulate voltage via a battery charger and then flow the pump for 1 min. Measure fuel and multiply output by 60 for your GPH. Same goes for higher pressures. Getting the voltage will be difficult as most chargers only have a few setting. I can set mine at 10amps and that's enough to bring my off battery voltage to 13.5ish. But if I crank the pump on the aeromotive 340 pulls something like 17amps at full pressure so I would have to put out more than 17 amps charging to maintain a 13.5v battery state. A 25 amp setting would be perfect. I don't know of any DC power supplies that can support 20amps and I'm not going to buy one for one test.
So so what's the best way to get flow rate while In the car. Under a real world situation with out messing with anything.
Performing the test with the engine idling should work fine. My engine only consumes 4 lbs/hr of fuel at idle. My dual 450's will put out well over 1000 lbs/hr. of fuel so the fuel consumed by the engine at idle is insignificant in the grand scheme of things. You may have to bring the RPMs up a little to get enough amps out of the alternator, but even then, the engine will be using less than 10 lbs/hr of fuel.
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From: Norn Iron
You're overthinking it blackbird.
And I see no reason to be obsessed at testing at a voltage that may be higher than what your system will actually run at.
ALWAYS test it at a lower voltage, that way there is always a safety margin built in to the system
If you test and base figures at a higher voltage and there are issues...you run risks. That's just stupid.
And I see no reason to be obsessed at testing at a voltage that may be higher than what your system will actually run at.
ALWAYS test it at a lower voltage, that way there is always a safety margin built in to the system
If you test and base figures at a higher voltage and there are issues...you run risks. That's just stupid.
