Fuel Tank for Injection Engines

[Wynand]

Originally Posted by Josh

Can anyone suggest a suitable swirl pot and pump to operate at ~180bhp @ 4bar? And will I have to incorporate a sump into my tank design?

Since my tank setup have rubber hoses in at the rear, changing to copper through the tunnel and back to plastic exiting at the front firewall, I decided on the following system to eliminate high pressure in the fuel line from the tank that can leak (fire risk) at the joints in the line.

At the tank I installed (any suitable place) an inline low pressure pump that move the petrol to the front and dump in a surge tank. At the surge tank I have four nipples fitted for;

1. return fuel line to tank when surge tank is full (on top)
2. Return fuel line from fuel injection rail (on top)
3. Supply from the low pressure pump at the tank (top side)
4. Supply to high pressure fuel pump (bottom) which result in the fuel pump always gravity primed in my setup

The beauty with this is that the fuel line to the surge tank is open ended so to speak and now pressure in it which is safe (just circulating and no pressure in the surge pot). The only high pressure pipe is the little distance from high pressure fuel pump to injection fuel rail. Another plus with this is the fact that the high pressure pump cannot surge cornering etc.
The con is you have to have two fuel pumps.

See this picture taken from my car's setup.