Front Fuel System

The front fuel system is relatively easy to sort but it in quite a tight space. It consists of a high pressure pump, swirl pot, fuel pressure regulator, lot's of pipe and in my case some lovely ATR throttle bodies!

First thing I did was to mount the high pressure fuel pump and the swirl pot. The high pressure fuel pump is mounted to the drivers side footwell panel using some rivnuts, large cable tie clamps and some heavy duty metal cable ties.

The swirl pot comes with a bracket and is mounted directly to the chassis using rivnuts as close to the footwell panel as possible. This is best done with the side panels off for access!

Swirl pot and fuel pump side view

Fuel pump and swirl pot top view

The large 13mm ID diameter high pressure pipe provided by GBS goes from the swirl pot to the bottom of the fuel pump. This required quite a bend in the fuel pipe. I used an internal pipe bender to avoid it kinking and got the shape I wanted. It was then p clipped to the chassis to avoid chafing. The red (feed) nylon pipe then attaches to the top of the swirl pot using some 8mm id fuel pipe of the correct spec. This runs quite close to the steering shaft so it makes sense to have that installed to ensure clashes are avoided.

I then waited for the throttle bodies before completing the system. I made a little bracket to attach the ATR fuel pressure regulator to a spare hole on the rear right of the engine which gave a very short run of pipe to the throttle bodies. It doesn't matter which end of the fuel pipe you have the regulator so I thought this was quite a neat solution. The bottom of the fuel regulator then attaches to the of the two outlets on the side of the swirl pot. I routed a pipe vertically downward and fashioned a couple of little brackets with cable tie clamps to secure the pipes without the possibility of chafing.

Another pipe run goes from the far end of the fuel rail and loops back to the top of the high pressure fuel pump. The pipe is secured to the tubular chassis rail using a home made bracket, and then along the top side chassis rail using p clips at IVA compliant intervals. Very secure!

Fuel rail to high pressure fuel pump

The final run of pipe is the return to the fuel tank which attaches to the black nylon fuel pipe and the bottom of the two outlets on the side of the swirl pot. Ignore the green tape, just waiting for some pipe separators to neaten it all up.

Final piping for the swirl pot

I would highly recommend having the engine loom in place, or at least an idea of where it is going to go to do the fuel pipe runs. The whole area is very congested and clashes can be easy. I also recommend purchasing a few 23mm p clips to use on the circular chassis rail. It avoids drilling unnecessary holes and in general all of this will be hidden once the throttle bodies are properly installed.