How to build a fuel system.

So we need to take a carb'd car and set it up for fuel injection. This is a large job, but it's more tedious work than actual hard work.

Here's a sketch of what we need to do.

So the idea is to take our stock tank, which has no baffling and use it to feed a surge tank. The surge tank will be a metal tank that holds 1 or 1.5 gallons of fuel and will be pressurized by a low pressure pump. The pressurized surge tank ensures that no matter how hard we throw the car sideways we will always have fuel.

Fuel goes from the surge tank, through a high pressure pump into an adjustable fuel pressure regulator (FPR). This will allow us to set our fuel PSI at the rail to whatever factory settings would be for our engine. Also, when we turn up the boost we can use the FPR to add more fuel to match the increase in air.

The FPR has two outputs. One goes to the fuel rail which will be run in a "deadhead" setup. This means the fuel return does not come off the rail. A fuel rail usually has an input on one side and an output on the other. In this setup it's just an input.

The other port on the FPR is our fuel return which feeds back to the surge tank.

The surge tank will have a fuel return back to the tank.

This is a sealed system that could be used on any car that is carb'd that you want to switch to fuel injection. You just have to find room for everything.

Cost on all this fun? We need hard fuel lines, braided fuel lines, a handful of fittings, a surge tank, two fuel pumps, a FPR, a fuel pressure gauge and maybe a fuel rail. A good rail should come with the engine, but who knows. Cost wise we're looking at $400-500 to set everything up.