Upgrading fuel distribution block 912S

You could install another Tee with one end soldered shut then drilled .014"  for the orifice into a return line to a header tank. Then attach to the balance tube so that it is the highest point so that any bubbles/vapor exit into the return line.

Thank you Garrett. I have found a nice fuel distro block I can use. It has a 1/8 NPT on the top. I can make a restrictor port out of a brass barb fitting as you mentioned to go back to the header. Should work. Good call on attaching it to the crossover tube as a high point. 

This really helped. Thanks again

Vance

I intend to use this fuel distribution block on my plane. (see the pic.) The fuel inlet is on a 3/8 "line with an AN-6 adapter. the lines to the carburetors are in An-4, 1/4" diameter. Same thing for the return line to my fuel tanks  but with a brass restrictor at the outlet of the distribution block. An 1/8 "outlet on the top with a 1/4 line to my fuel pressure block installed on the firewall.

Any comments are welcome.

Daniel

You may want to fire sleeve all fuel lines lest you experience vapor lock.

Thanks for posting this description with photos.  Exactly the set up I have been looking for in order to clean up the fuel delivery and add the fuel return line.  Very nice set up.

If you don't me asking- what type of brass restrictor did you place in the fuel return fitting?

Thanks, and safe flying.