Fuel pump/pressure Duratec R300

[boss351]

Hi, I am piecing together a possible upgrade and one thing I need to know is the fuel pressure from the stock setup on a 2010 Roadsport SV 170, this is the Duratec, single throttle body/intake plenum with the single fuel rail, black bosch injectors.

 

Also, if I just wanted to measure it anyone know what fittings I'd need to put to a gauge in-line at the rail? The fuel line isn't a simple hose-clamp but some kind of quick connect with o-ring seal. (Pics attached).

 

Cheers,

Adam

[Off Road SHO]

Well, if it only has one fuel rail, it is a "returnless" style, where the fuel pressure is regulated by the fuel pump itself, which in turn is commanded by a fuel pump management module. Sometimes this module is part of the engine computer, sometimes it is a separate module.

 

Regardless of the type of pump you have or will have, the required pressure is dictated by the injectors and the computer that pulses them. My guess is that at a minimum you would need 55 psi to spray appropriately.

 

Tom

[boss351]

The pump/regulator is a self contained unit submersed in the tank. I finally borrowed a kit to measure the pressure at the rail (the quick connectors are Ford CFI style), and it is regulated at 4.5bar (65psi).