Ed Anderson wrote:

 .

Bulent Aliev wrote:

I would like to get some idea, what is the best way to build the

fuel

return system of the 13b in a Cozy. Per plans we have two tanks with
fuel selector valve. I have my own ideas, but would like to hear

from

some people with more experience.
How to prevent one tank from over filling by the return fuel,

without

having a complicated pilot managed fuel system?
Bulent

  Bulent,

    I use a small header tank mounted on the firewall feeding my two EFI
fuel pumps with separate fittings and hoses.  Excess fuel is returned from
the injector fuel rails through the presssure regulator back to the header
tank.  The fuel injected reduces the amount in the tank creating a pressure
differential which draws more fuel from the selected wing tank.  I have a
boost pump between fuel tank selector and header tank, but only turn it on
for take off and landings as a safety percaution as the pressure
differential pulls enough fuel for all flight/engine modes.  I do keep the
header tank cooled with air tubes to preclude any problem with potential
vapor lock.  If I had it to do over, the only thing I would change is the
location of the header tank.  I would probably put it in a wing root out of
the hot engine compartment.

Ed Anderson
eandeson@carolina.rr.com
Matthews NC

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