Description: Ginetta G40 Fuel System
Fuel Tank
The fuel tank is a sealed FIA-specification fuel cell, much like a bag within a 45 litre aluminium box. We have emptied and refilled the tank and it took 38 litres.
The fuel tank is located behind the driver and is accessed by removing the vertical panel in the boot.
The fuel pump is on the top-left of the fuel tank. The fuel filter and gauge sender are inside the tank. I had the fuel filler pipe replaced on my car as it was too short, and that can only be done by removing the rear window of the car.
To remove the fuel pump and gauge sender, you have to remove the whole fuel tank by undoing the bands / straps that hold it secure in the boot. Thanks for the info to Luca Cortese, a G40R owner in Italy.
Fuel Measurement
The dashboard fuel gauge in the G40 is not reliable. There is a fuel drain valve in the engine bay, where the fuel line runs across the bulkhead, in front of the driver. New G40s come supplied with the adapter for the fuel valve and a length of drainage hose, but you'll need to attach a pump switch (available from Ginetta for approx. £150). The switch connects to a Sure-Seal connector (available from ITT Cannon).
If you don't have a fuel pump or accurate method of measuring, you can calculate using about 7 litres per 20-minute track session (approximately 0.4 litres per minute). Fuel weighs approximately 0.77 KG / litre.