Carb Fuel System?

[sam jfm 0]

I have a set of twin 40's to plumb in, now im not sure what to do on the fueling front. i have a filter king to reduce the pressure ( to about 5psi?) but i am wondering how to get the fuel to it. i had thought about using the original gti pump thats on the car, through the reg and to the carbs BUT i dont have a return on the reg or the carbs i dont think? so i cant get the fuel back to the tank. so what are my other options? swirl pot and another pump? (rarther not its gets expensive) other than that i dont know!

 

What is the standard gti pump pressure? i dont want to reduce it to the stage where its putting alot of strain on the pump, they catch fire you know!

[Baz 421]

You don't need a return with carbs.

 

3bar is around the std inj. pressure iirc., you'll be ok to use the std pump then knock the pressure down with one (probably 2) regulators.

[sam jfm 0]

2 regs? how come?

[mickie 3]

one regulates the high pressure down from the standard pump and also returns the excess fuel back to the tank, the other is a straight through regulator that drops off the pressure even more for the carbs

[Galifrey 1]

one regulates the high pressure down from the standard pump and also returns the excess fuel back to the tank, the other is a straight through regulator that drops off the pressure even more for the carbs

 

You don't need 2 if you fit one of these http://cgi.ebay.co.uk/ws/eBayISAPI.dll?Vie...em=390097431808

 

it does both jobs in one

[mickie 3]

dont the carbs need less than 5 psi ?

[MrG 3]

mine runs spot on 5psi and are ok. I have one reg (a filter king) and it does the job and like Baz says, I have no return, I just plugged the exg return and left it in place. Runs from the std GTI pump etc.

[Galifrey 1]

dont the carbs need less than 5 psi ?

 

5psi is spot on for DCOE's