I have read the extensive comment regarding Weber carbs and viewed the Brant diagram which is very helpful.
My question is as follows:- I have used the Pelican fuel pump rated for maximum 5 psi and relocated same under the fuel tank with a single braided line to a filter then in line to the dual Weber carbs.
The return fitting at the bottom of the tank has been capped off.
The carbs are 48IDA and the motor is a big bore 2500cc stroked unit.
Is it necessary to use a regulator in the system if the pump is already designed to run such a low psi rating?
In other words my setup is the Brant diagram Option A without the regulator.
If a regulator is used should it be set up in a central position with equal length line feed to the dual webers?
I am unsure of the purpose of the return line as shown in Option B- if the fuel is regulated before reaching the carbs would not this fuel be consumed rather than be pumped back to the tank- and secondly the return functions from the second carb only rather than from both?
I apologise if these questions appear dumb as I have little understanding of required fuel flow for dual carb setups and any help explaining this would be much appreciated.
Regards,
Fat Albert
