What does Lph mean on a fuel pump?
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What does Lph mean on a fuel pump?
liters per hour
Electric fuel pumps for EFI applications are rated in liters per hour, or lph. Factory electric fuel pumps can flow around 180-190 lph in early EFI cars, and high-performance, late-model Vette pumps can flow more than the popular “255-lph” aftermarket fuel pumps.
What does upgrading your fuel pump do?
An upgraded fuel pump may move so much fuel, the factory regulator cannot bleed off the pressure fast enough. An aftermarket fuel pressure regulator is capable of much higher fuel volumes and can reliably control the fuel pressure from a very large fuel pump. Fuel injectors come in many different sizes.
Do aftermarket fuel pumps add horsepower?
The noob belief amongst amateur tuners is increasing the fuel pressure up a few psi from the regulator will mean the injectors are getting moaar fuel which will increase the horsepower. Wrong. Truth be told, aftermarket FPRs are not necessary and the factory OEM FPR will do the job just fine.
How do you calculate gph pump?
For example, consider your pump is able to fill the gallon container within 15 seconds. Divide the timed rate by 60 to find the gallon per minute rate: 60 divided by 15 equals 4. Multiply the gallon per minute rate by 60 to find the gph rate: 4 times 60 equals 240 gph.
How do I calculate fuel line size?
If your pump does not list line sizes, use the table below as a basic guideline….Recommended Size, Based on Horsepower.
| Recommended Fuel Line Size (from the tank to the pump) | ||
|---|---|---|
| Engine Output | Size (inches) | Size (AN) |
| 350 hp or less | 5/16 in. | -5 |
| 350-450 hp | 3/8 in. | -6 |
| 450-650 hp | 1/2 in. | -8 |
Can a fuel pump be too powerful?
Using the wrong fuel pump that delivers excess pressure can cause problems ranging from poor performance and lower gas mileage to flooding and carburetor damage. When the pressure is only a little over the required amount, your vehicle may sputter when you first accelerate from a stopped position.
Are aftermarket fuel pumps good?
Aftermarket fuel pumps are commonly universal. That means they’re designed to fit all similarly-sized vehicles. That can cause all sorts of problems with the fuel system and the engine. The best thing is to install an OEM fuel pump if you want to ensure a solid and reliable performance for a long time.
How much HP does a high pressure fuel pump add?
Horsepower As horsepower increases so does the volume of fuel required to support that power. A good estimator of volume to power is approximately 10 hp per gallon or 2.64 hp per liter. For example if your pump flows at 50 gph it should be able to support a 500 hp engine (50 x 10 = 500).
How long do aftermarket fuel pumps last?
Fuel pumps have been known to last for over 200,000 miles in some cases. After 100,000 miles, the failure of the pump is likely enough that if you are replacing a major part in the fuel system nearby, it may be advantageous to replace it at the same time.