What is the lph on a stock 1g fuel pump?

[chanley talon]

What is the lph on a stock 1g fuel pump? I have a extra stock 5 speed turbo fuel pump and my friend has a stock 240sx with a turbo and he is only wanting to run about 12 psi on his car i was wondering if my stock fuel pump would be enough for his car all stock using a t/3/t4 turbo running 12 psi about the factory setting on a dsm.

 

[ilco187]

100 liters per hour @ 43 psi @ 12V he would be better off with a supra tt pump or a wally 190/255 or now that i think of it a 300zx tt pump.

 

[chanley talon]

Are you sure a 1g turbo awd is only 100 lph ? I thought it to be at least 150 lph.

 

[Strm Trpr]

RRE Instructions

 

[95blackGsTurbo]

It's going to be closer to 130 because the 100lph test is done with just key on engine off as well as running 37 psi not 43. Car will supply close to 14 volts to the pump at all time's as long as it has been rewired to be able to accept it at high rpm's which everyone knows is a problem.

 

[chanley talon]

Thanks i think it will be safer just to go 255.

 

[DSMopar]

It's going to be closer to 130 because the 100lph test is done with just key on engine off as well as running 37 psi not 43. Car will supply close to 14 volts to the pump at all time's as long as it has been rewired to be able to accept it at high rpm's which everyone knows is a problem.

It will flow less at 43 psi than 37....

 

[95blackGsTurbo]

That's what I stated.

 

[DSMopar]

It's going to be closer to 130 because the 100lph test is done with just key on engine off as well as running 37 psi not 43

You made it sound as if it'll be closer to 130 because it's tested at 37 psi and not 43 psi... when in fact this will make it flow less.

 

[95blackGsTurbo]

The lower the fuel pressure the more the pump can flow. The higher the fuel pressure, the less it can flow because it is spending time building pressure in the rail instead of flowing. Take a look at the chart.

73 psi = 55.52lph
58 psi = 100.3lph
43 psi = 132.5lph

It will be in excess of 132.5lph because of the stock 1g fuel pressure being 37 instead of the tested 43.

 

[sketzshane]

Make sure that you purchase a fuel pump re-wire kit, or make 1 along with the 255lph Walbro etc.. I also hope you have an Aeromotive Fuel Pressure regulator because you may need it depending.

 

[95whitegst]

i always thought they were 140s