Dual Carb with fuel return line Options

[ndfrigi]

Hello Teeners! Is there anyone can share any pictures how they do a return fuel line especially on the carb side?
Since I will be replacing my fuel lines to SS and removing my fuel tank to clean, much as well prep everything with return line.

I have Weber 36 Idf with 32vent

Thank you!

[bbrock]

I'm running this Malpassi bypass regulator. So far it has worked perfectly holding the pressure at the carb at a steady 3.5 psi. It has been so steady, that I finally pulled the pressure gauge after monitoring pressure for 3K miles without seeing any variation in pressure at all. I'm running SS lines.

The important key is using a bypass regulator that bleeds off enough volume of fuel from the supply to maintain pressure rather than choke down pressure like in a typical dead end regulator. I almost went the PMO route because it is supposed to do the same thing, but now glad I didn't after reading Mark's post.

Are you using the "boost reference" port or just plug it and it works as just a regulator with a bypass?

I just left the "boost reference" port open. I believe that is what the instructions specified if it wasn't being used. And yes, it works just as a bypass regulator in that configuration.

Same question for @BBrock and which configuration are you using?

I believe I'm using option C, but it might be D with a Tee just after the regulator output. I'll check tomorrow and confirm.

[bbrock]

Same question for @BBrock and which configuration are you using?

I believe I'm using option C, but it might be D with a Tee just after the regulator output. I'll check tomorrow and confirm.

Forgot to check yesterday but I'm using option D. I like C better but didn't have the fitting to run through the 3-4 carb so I could eliminate the Tee (actually a wye in my case).