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Reply to "Electric Fuel Pump to Prime carb after car sits for period of time"

DSC00012_[1)...You can see where I mounted the E. Fuel Pump, high on the Chassis. NO hoses near the Header!

1. The Mechanical Fuel Pump was Gone on the First Day! I don't trust them, I have had a few go-out on me...at the worst of times. Never had an Electric Fail. but I do Travel with a Spare E. Pump. also, the Mechanical pump, being mounted next to the Header IS the Cause of any Vapor-Lock! The Electric Does NOT Have to be mounted LOW!! Take it from Experience...You want this pump as FAR from any Heat Source, as You Can Possibly Get IT.

2. It is a Holley 'LOW" Pressure pump producing 4-5 PSI Max.

3. It is mounted to a Jacobs pressure regulator and the pressure is Calibrated at a Steady 4.0 PSI, working Engine Running.

4. The Regulator was NOT Needed, but I used it for the feature of Detouring Fuel back to the tank, once set pressure is reached, relieving the stress on the pump. Any 'Heating' of the Fuel, has not been noticed.

5. Holley E. Pumps are VERY Noisy. Where this is mounted, I could hear it 'Barely', over the Engine Sounds. The In-Cockpit Gopro Camera, caught it on Audio. When I played the Video back it struck My Nervous System Badly, as I realized, I had Listened to the Vibration, constantly, during a Desert Trip, for well over 1400 Miles. As soon as I was back in the Garage, I immediately added Two Rubber 'Vibration/Noise Isolators', (the Isolators with Dual Threaded STUDS 1-1/2" OD 1" Thick studs are 3/8" NC), between the Pump and Chassis. ALL is Very Good, Now.

6. The switch is mounted on a Gauge Plate to the right of the center console, with a RED Protection anti-accidental ON) Flip-Cover. Before starting the Engine. I fill the float bowls, shut the pump off, so the needle seats aren't 'stressed' (especially when the Engine is Already HOT, to prevent Flooding), No need to prime when it's already Hot. For start-up, I hit the accelerator 4 times (Only when COLD) and it fires right-up. Then the pump is turned back on. When temp starts to come up, I turn on the Main Rad Fan, Aux Fans are use when needed. The Aux Fans are OFF when cruising on the Freeway, as the coolant runs cooler. The Aux's actually 'Block' the air flow, when at 75-80 MPH, proven in Testing.

MJ   



DSC00012_[1)

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Last edited by marlinjack
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