return line do i need one ?
this is what GM Service Infomation says about the regulator for a 2000 F Car with LS1
The fuel pressure regulator attaches to the fuel return pipe on the fuel sender assembly. The fuel pressure regulator is a diaphragm operated relief valve. A software bias compensates the injector on-time because the fuel pressure regulator is not referenced to manifold vacuum. The injector pulse width varies with the signal from the MAP sensor. With the ignition ON and the engine OFF, system fuel pressure at the pressure test connection should be 380-410 kPa (55-60 psi). If the pressure is too low, poor performance could result. If the pressure is too high, excessive odor and a Diagnostic Trouble Code (DTC) P0132, P0152, P0172 or P0175 may result. Refer to Fuel System Diagnosis for information on diagnosing fuel pressure conditions.
so as you read, there is no external return line, your options are:
A: mount an internal fuel sender unit for a F Car LS1 into you fuel tank using the one single line.
B: in 1997 and 1998 corvette's had the return type fuel rails. use these and an adjustable fuel pressure regulator, and set the pressure 55-60, not hooked to vacuum, as the computer caculates changes in pulse with from MAP sensor.
(not sure but you might be able to use stock regulator, just not hooked to vacuum source, this would result in max pressure from regulator, might be around 55-60, again not sure.)
C: in 1999 corvettes had a fuel pressure regulator as part of the fuel filter. you could mount an inline or intank pump, and run to the filter, then from the filter back to the gas tank. this too would supply one steady fuel pressure to the fuel rail.
THIS is from Service INFO for 1999 corvette
...The fuel pump pumps fuel to the fuel rail assembly at a specified flow and pressure. Excess fuel from the fuel pressure regulator, a part of the fuel filter, returns to the left fuel tank through the return pipe.
good luck i hope this helps...
The fuel pressure regulator attaches to the fuel return pipe on the fuel sender assembly. The fuel pressure regulator is a diaphragm operated relief valve. A software bias compensates the injector on-time because the fuel pressure regulator is not referenced to manifold vacuum. The injector pulse width varies with the signal from the MAP sensor. With the ignition ON and the engine OFF, system fuel pressure at the pressure test connection should be 380-410 kPa (55-60 psi). If the pressure is too low, poor performance could result. If the pressure is too high, excessive odor and a Diagnostic Trouble Code (DTC) P0132, P0152, P0172 or P0175 may result. Refer to Fuel System Diagnosis for information on diagnosing fuel pressure conditions.
so as you read, there is no external return line, your options are:
A: mount an internal fuel sender unit for a F Car LS1 into you fuel tank using the one single line.
B: in 1997 and 1998 corvette's had the return type fuel rails. use these and an adjustable fuel pressure regulator, and set the pressure 55-60, not hooked to vacuum, as the computer caculates changes in pulse with from MAP sensor.
(not sure but you might be able to use stock regulator, just not hooked to vacuum source, this would result in max pressure from regulator, might be around 55-60, again not sure.)
C: in 1999 corvettes had a fuel pressure regulator as part of the fuel filter. you could mount an inline or intank pump, and run to the filter, then from the filter back to the gas tank. this too would supply one steady fuel pressure to the fuel rail.
THIS is from Service INFO for 1999 corvette
...The fuel pump pumps fuel to the fuel rail assembly at a specified flow and pressure. Excess fuel from the fuel pressure regulator, a part of the fuel filter, returns to the left fuel tank through the return pipe.
good luck i hope this helps...
