Mechanical v Electric fuel pump?

[Kevin H]

Originally Posted by David C

I quite like the idea of an auxiliary low volume electric pump to prime a system with main mechanical pump. It would be easy to control with brief timer as used with diesel injectors.

I don't see the need for a timer, unless you want it be fully automated with the ignition switch. You could just use a momentary on-off switch, which you press for a few seconds to fill the carburettor before depressing the accelerator pedal and engaging the starter motor, (ideally a reduction gear starter motor).


It may only be required when starting from cold when the car hadn't been used for a long time.

[dwomby]

Originally Posted by Kevin H

I don't see the need for a timer, unless you want it be fully automated with the ignition switch. You could just use a momentary on-off switch, which you press for a few seconds to fill the carburettor before depressing the accelerator pedal and engaging the starter motor, (ideally a reduction gear starter motor).


It may only be required when starting from cold when the car hadn't been used for a long time.

I rather fancy one of these devices: https://www.revolutionelectronics.co...Fuel_Pump.html
although I hesitate to add points of complication/potential failure.

David

[dwomby]

When my Mallory order got cancelled, I quickly grabbed a Carter P4070 and installed that. I have a 100 micron filter between the tank and the pump. After the pump I have a Mallory deadhead regulator holding the fuel pressure to 5PSI followed by a NAPA Gold filter before the carb.. The new pump provides rock steady 5PSI through the regulator and everything seems to be working fine. The pump comes with a mounting bracket and rubber isolators to reduce pump vibration passing to the bracket. In addition, I mounted the bracket to the car using rubber 'bobbin' type mounts to further isolate it. The pump seems loud before firing up and can be heard above the idle but once above idle, the sound is lost.

I may try a mechanical pump as a project for next winter but for now the car is for driving although it needs some tuning.

David

[AndrewA]

Good news. With me there was also an element (for a while) post installation of consciously trying to see if I could hear it which doesn't help!