Electric fuel pump and regulator?

[Dennis Hudson]

Working on my old 83 2.3 Ranger. Just had the engine rebuilt and switching to a electric fuel pump. Webber carburetor 32 36. 3 lbs pressure required. Anyone know if a regulator is also required . Or do we trust the pump alone...

 

[alwaysFlOoReD]

I not sure about Webber, but any other carb had a float that shut off excess fuel. That worked well enough for decades.

 

[Dennis Hudson]

The max pressure on the Webber carburetor is 3 psi. Is it better to put on a regulator set to 3psi and stay with the mechanical pump or 3 psi electric pump. Appreciate all opinions on this

 

[alwaysFlOoReD]

I'm very cost conscious.
How much pressure is the mechanical putting out? How much does a pressure regulator cost?
Can you find a electric that puts out 3psi specifically? What does it cost?

 

[Dennis Hudson]

The stock mechanical pump puts out 5 -7 psi. Then I have read that a electric pump must be mounted close to the tank and then may not put out a consistent psi of 3 . And I have read that electric is the way to go. Confusing

 

[alwaysFlOoReD]

So I went to redlineweber.com and they don't mention an electric pump. They say to use a regulator if needed.
I think an electric could have variable output if the voltage and current flow in vehicle changes for whatever reason. I'm leaning towards the regulator on a mechanical pump.

 

[RonD]

I would use use a 1985-1988 lift pump in the tank, should fit 1983 but not sure, they do 4-6psi pressure

Like this one: https://www.ebay.com/itm/For-Ford-Ranger-L4-2-3L-V6-2-9L-1985-1988-Center-Tank-Fuel-Pump-Module-SP377H/362674175842?hash=item547110bf62:m:m26yuqPD2A4UA8kqoe9lzhg&fits=Year:1986|Model:Ranger|Make:Ford

An in-tank electric pump means you can't lose the "prime" like you can when using "siphon" feed, pump outside the tank,
i.e. if fuel gets low on siphon feed and you go around a corner the pickup can get exposed to air, and electric pump will suck in that air and you can lose the siphon

I would also use a relay to power the pump, the relay is activate by an oil pressure switch, so if a fuel line breaks, like in an accident, the engine would stall(no oil pressure) and pump would shut off......................not feed a fire
You should do this with any electric fuel pump, Ford uses computer and an Inertia switch, so two separate cutoffs for this.
Should cost under $25 for relay and pressure switch

I think 3psi would be the minimum pressure, for a 2.3l at wide open throttle, should be fine up to 7psi

 

[alwaysFlOoReD]

Redlineweber site says their carbs need only 2.5 to 3 psi.
See #4 in link.

IMPORTANT THINGS TO KNOW

www.redlineweber.com

The lift pump puts out 5-7 psi. It would need to be regulated anyway.

 

[RonD]

It would be worth a call to them but I read it as "only requires" 3psi, to me that means at least 2.5-3psi minimum, not regulated down from 7psi

The "watch out for higher pressure" would be for the 30-60psi fuel injection pumps, when doing carb conversions, IMO

Its possible they have a odd float bowl set up without any leverage on the valve, but not sure why they would do that