TECH BULLETIN

The acceleration rate of cars running quicker than 9.00 seconds can prevent an engine mounted pump from pulling fuel from a rear mounted fuel cell.

The explanation is quite simple, if the car launches at 1g, the fuel pump sees the same negative force against the inlet as it would with the car standing straight up. So, if your inlet line is 10’ long, the pump must to do extra work equal to lifting the fuel 10’. 10 feet of head is equal to 4.33 PSI…a perfect vacuum equals -14.7 PSI…with a 10’ inlet line accelerating at 1g, the pump has lost 29.5% of it’s ultimate capacity.

The obvious solution is a front mounted fuel cell, but cars that are street driven need more than the 1-3 gallons that a front mounted fuel cell provides.

A solution would be a vented 1 gallon (that’s more than you will use in a ¼ mile pass) inline reservoir located in the front of the car, that is gravity fed by the rear fuel cell through a Race Pumps check valve.

When the car launches, the anti-backflow valve will prevent the fuel in the reservoir from returning to the rear cell. The vent will allow the fuel pump to pull from the reservoir during the run. The reservoir will re-fill after the pass and stay full during normal driving.