Lancia Beta Forum

Technical stuff => Fuel System Carb => Topic started by: Ferrit on May 27, 2026, 11:12:31 AM

Title: Malpassi Filter King Regulator
Post by: Ferrit on May 27, 2026, 11:12:31 AM

Morning,

I have fitted a FR and dialled it down to 3psi (running a mechanical pump btw).  Question, what do I do with the carb return, currently its running as was stock setup?

Title: Re: Malpassi Filter King Regulator
Post by: lancialulu on May 27, 2026, 01:14:58 PM

The fuel return (I think via a 1mm hole) naturally regulates the flow but no harm in a Malpassi that smooths it out. I would keep the fuel return as it allows the carb some cool fuel which will help carb vaporisation on hot days...

Title: Re: Malpassi Filter King Regulator
Post by: Ferrit on May 27, 2026, 03:27:50 PM

Thank you.  Glencoe replied and said no harm leave it be