QUOTE(MarkV @ Jan 11 2019, 12:24 PM)
QUOTE(Mark Henry @ Jan 11 2019, 06:36 AM)
QUOTE(MarkV @ Jan 10 2019, 10:46 PM)
Running a high pressure pump and a regulator seems like added complication with extra lines that could leak or cause a fire.
I guess every FI car in the world needs to be scrapped because they're all ticking time bombs.
Fuel injected cars require high pressure, carbed cars obviously do not. Just seems like a recipe for a problem to try to make a 20+ psi pump put out 3.5 psi. Doesn't take much pressure to overcome the needle and seat in a carburetor.... that and you can buy a carb pump for less than $100.
When used in a bypass system set to 3 psi with return line, there is never any high pressure in the line regardless of the pump used. An EFI pump simply moves more fluid where a little is bleed off to make 3 psi for the carbs and the rest is returned to the fuel tank.
There are a few other threads discussing pros and cons of recirculating vs. deadhead systems for carbs. After reading the great info here and elsewhere, I've decided a recirculating system is the way I want to go. Once that decision was made, retaining my stock pump becomes a viable option, but regardless of the pump I choose, I'll need a bypass style regulator.