Quote:
Originally Posted by Snakebit
Am I missing something here? I thought the regulator had to be mounted between the fuel pump and the carbs, and as close to the carbs as possible. The guage can be mounted after the carbs. If you mount the regulator after the carbs, then how can you adjust the fuel pressure?
The fuel pressure regulator is there to regulate the fuel pressure to the carbs, just under 3 lbs for Webers. You need a return line so the excess pressure can be bypassed.
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A bypass regulator can be mounted before OR AFTER the carbs.
The regulator is not a restriction for fuel flow if after the carbs.
Mounted after, the carbs are getting fresh cool fuel at their inlets,
the regulator dumps the excess back to the tank just like EFI does but at a lower pressure. Mine runs at 3 psi.