An impact shut off switch or shut off switch actuated by the oil pressure switch may be installed for added safety if you wish. The light brown wire on the pump attaches to a 12V power source controlled by an on off switch installed in a location of your choice. The pump has a wrap around mount bracket that requires one mount bolt which can also be used as a ground for the pump (black wire).
It is not necessary to drill a mount hole because a hole already exists in the brace. They are designed to allow fuel to pass through when the mechanical only pump is in use and can be used to augment the mechanical pump when the engine starts to surge at the onset of a vapor lock… I recommend installing the electrical pump in the fuel line on the out board side of the frame inside the second frame to floor brace away from any heat source. It is installed for back up and used only to over come a vapor lock if necessary or cold starts if the vehicle has been setting for a long period of time especially on 1955/56 models. I recommend an inline pump similar to the one pictured, which was purchased from Car Quest Auto Parts P/N E8016S. If you feel it is necessary to by pass the mechanical pump should it fail a by pass hose can be fabricated and carried to be installed if you desire. I do not recommend by passing the mechanical fuel pump when an electrical pump is installed. Electric fuel pumps are designed to push fuel and they loose efficiency when pulling fuel from the tank. If the electric pump is installed in the engine compartment they act as a heat sink which can cause a vapor lock. They should never be installed in the engine compartment for two reasons, distance from the tank and excessive heat from the engine. They should be installed as close to the fuel tank as possible. you have a pressure valve on the fuel rail,push it in to let the air out of the gas line or your fuel filter could be stoped up.cars today do not vapor lock. Stainless steel fuel lines, although they look great, absorb more heat and can also contribute to a vapor lock.Īn electric fuel pump can eliminate a vapor lock when properly installed and I stress when properly installed.
GAS VAPOR LOCK FULL
When your fuel lines are full of vaporized 100LL, your fuel pump can't get liquid fuel to the injector nozzles, which makes starting your aircraft frustrating, difficult, or impossible. They can also occur in the fuel line from the tank if the fuel line is too close to the tail pipe as it passes over the frame. Vapor lock happens when the fuel in your fuel lines vaporizes, turning from a liquid to a gas. Most vapor locks occur in the engine compartment of our Thunderbirds. Most fuel we purchase today contains ethanol which adds to the possibility of a vapor lock especially in hot weather and during sustained loads while driving over steep terrain. Vapor locks usually occur in automobile fuel systems between the tank and carburetor. Vapor locks are created in fuel systems when excessive heat turns liquid fuel into a non liquid vapor.
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