Right, hear me out before you shoot me down in flames here ha ha

Im converting my carb nova to fuel injection in the new year and need to install a full fuel system from the tank to the fuel rail. Obviously the easiest way would be to buy a system from a GTE etc as that has all the line's and pump, swirl pot etc as standard..

HOWEVER!!!

Due to my uncirtain future plans for the car, i would rather do the job once and do the job right. Obviously i need a lift pump going into a swirl pot, with overflow back to the tank. Then a high pressure pump feeding into a line running to the front of the car, going into the fuel rail. Now normally, excess fuel would go into a regulator and back the return line to the tank, this is where my idea drifts...

Could i just run one line from the high pressure pump to the front of the car into a closed ended fuel line with some sort of pressure switch to only run the high pressure pump on demand? I could plumb some sort of accumulator just before the fuel rail with a non return valve, in much the same way an oil accumulator is plumbed in?

This would save me running 2 lines and would balance the fuel pressure across the back of the injectors. It would also make it easy to set a fuel pressure and maintain it at the high RPM's I want from my engine...

any thoughts?

 

not a bad idear the later models on my car ran a single line with the pump controled by the ecu the only thing I would maybe see as a problem is when you shut the engine down would you not want to have a bleed back valve to de pressurize the rail?

 

Most makes of car leave the rail presurised as far as i know

 

Bump...

 

TBH mate, the idea of valve/solenoid controlled 2nd fuel pumps sounds
quite over complicated...

also. once you go to Throttle bodies or turbo or whatever your plans are.. you wont want to go back, so wouldnt worry about it!..
Add to that, the fact it would be way easier to make a 2 line system back into a 1 line system (change back to old pump and block off return)

I would just change it all for the proper fuel injection stuff, and worry about changing back if it ever came to it.

 

You can just put the pressure reg next to the tank at the back, and a single line up to the rail. The return from the reg can just return to tank (or swirl pot).