Technical Tips > Post 84

Fuel Pump help requested

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TPI-383:
RJ,
  From memory Q-Jets do not like more than 6psi fuel pressure or you can blow fuel past the needle and seat and the carb will flood, I had a carter electric pump on my VB Commodore with an adjustable Holley regulator that was set at 5psi and it fed 300 hp at the wheels without a problem.Pressure is not the concern,flow(voloume) is, good size fuel lines (3/8 in. min) are a must for good flow. The Holley pumps are piston pumps I think where the carter is rotary type. The carter pump was very reliable and not too expensive and came with all mounting brackets and screws.It was not very loud when running.
TPI-383

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