F4R fuel system

[TomR5er]

A couple of questions that'll significantly reduce some headaches of mine.

What fuel pump (or pumps) do i need to get enough pressure? the conversion guide says the bosch 044 but i thought that amount of pressure would be a bit excessive and i could get away with less as its never going to be turbo'd. Thoughts?

And does there have to be a pump fed return line from the rail to the tank or can it just be a one way system?

Unfortunetley i dont have vast knowledge on setting up fuel systems so any information would be a big help and also potentially get me a step closer. Thanks fellaaass

[James5]

For an N/A conversion then yes the 044 is excessive and not needed but the std gtt pump is not enough, you just need an external injector pump of a similair size N/A engine. You will need a return to the tank so you are prob best getting hold of a clio 1.8 16v fuel rail for the conversion as this has the fpr on the rail and a return port for the tank, you then just need to extend the existing gtt fuel lines to the fuel rail, ditching the gtt FPR.

[Matt Cole]

The other way is you could return to tank via the regulator. This way means you only have a feed to the rail.

Grab any decent in line fuel pump from a 2.0L engined car. An 044 pump would still work and would be good if you tune the f4r in the future.

[Matt Cole]

Have a look here as I did a diagram a while back:

https://www.rtoc.org/boards/showthrea...gulator+return

[TomR5er]

So what did the original f4r engine have if it didnt have a return? and its going into a campus so im going to have to make a whle new fuel system essentially so h/p fuel pump inline and then a smaller for the return.

[TomR5er]

Have a look here as I did a diagram a while back:

https://www.rtoc.org/boards/showthrea...gulator+return

Thanks that is real helpful!

[Matt Cole]

Thanks that is real helpful!

At your service!