> For a 13b NA,
>
> What size fuel lines are commonly used for forward of the fuel pumps?
> And prior to the fuel pumps?
>
> Also prior to firewall forward,  is there anyone who is successfully
> using Nylo-seal or similar nylon 11 or 12 tubing as fuel lines?  I ask
> this as my kit came with big fat rubber fuel lines, however with having
> to route 4 fuel lines into each wing their size(1/2" OD) presents some
> challenges.
>
> Thanx...
Scott,

I use all 3/8 aluminum lines, before and after the fuel pumps.
I have a 3/8 flexible line between the airframe and the engine to absorb the
vibration and engine movement.

Rino