Fuel swirl pot location
Discussion
If the lift pump can always outflow the HP pump, that makes it easier to run the tank at a slight pressure.
That pressure could largely negate the necessity to run the HP pump lower than the level of fuel, because in effect it has a pumped supply of fuel.
But without monitoring of tank pressure, you couldn't be 100% sure.
Just always safer and easier to run the pump lower than the level of fuel, so it never has to try and suck, it is always "gravity" fed
That pressure could largely negate the necessity to run the HP pump lower than the level of fuel, because in effect it has a pumped supply of fuel.
But without monitoring of tank pressure, you couldn't be 100% sure.
Just always safer and easier to run the pump lower than the level of fuel, so it never has to try and suck, it is always "gravity" fed
Always fuse a fuel pump, but always, always wire it via an inertia switch. You don't want it running if you have crashed!
But if this is your own installation, mount the switch where you can reach it from the driving seat. It's possible, as I found, that some 'kerb-running' can so jolt a race car as to activate the inertia switch, which will take you right out of the race, unless you can reach over and reset it.
The switch fitted (usually in the engine compartment) by many manufacturers looks like this:
and comes in two versions, two and three wire. The second illuminates a warning light when the switch is activated, so in the flurry of coasting off the corner with the engine dead, you can see why!
John
But if this is your own installation, mount the switch where you can reach it from the driving seat. It's possible, as I found, that some 'kerb-running' can so jolt a race car as to activate the inertia switch, which will take you right out of the race, unless you can reach over and reset it.
The switch fitted (usually in the engine compartment) by many manufacturers looks like this:
and comes in two versions, two and three wire. The second illuminates a warning light when the switch is activated, so in the flurry of coasting off the corner with the engine dead, you can see why!
John
Gassing Station | Engines & Drivetrain | Top of Page | What's New | My Stuff