Electrical
Nonconductive acorn nuts are provided to prevent any accidental short circuits. Furthermore, the high-quality in-tank wiring is insulated with chemically resistant ETFE. Electrical hardware is included for the fuel pump(s), OEM-level sender, and OEM temperature sensor. Single pump applications can reuse the OEM fuel pump controller wiring, but it is recommended to upgrade the OEM wiring as these high-flow fuel pumps draw additional current, requiring larger gauge wire. Fuel pump wiring kits can be purchased HERE.
Fuel Starvation
One conclusion with the dated OEM system is poor protection against fuel starvation. The Radium Engineering system incorporates a unique siphon jet pump. Using a venturi effect, this "mechanical" pump draws fuel from outside the sub-tank and distributes it directly to the pump inlets.
As shown, the sub-tank stays full in all driving conditions.
VENTURI JET PUMP
- The siphon system has been redesigned to completely eliminate any restriction on the return line but still effectively scavenge fuel. This means higher-flow pumps can be safely used without inducing fuel pressure issues.
- The new venturi jet pump will consume 15-45 LPH, depending on the current fuel pressure. Take this fuel loss into consideration when sizing the fuel pump(s).
- Furthermore, there is a new high flow integrated check valve on the merged fuel pump outlet, as shown above. This valve maintains fuel pressure after the engine is shut down.
Both 20-1510 and 20-1512 can accommodate 1, 2, or 3 fuel pumps. As shown below, fuel cannot pass between the three independent filtration chambers (A, B, C). If fewer than three pumps are installed, the empty port does NOT need to be blocked off.
