Hello Paul,

   This is what I plan to do as fuel system:

   In Canada we must have a gascolator, a valve to cut fuel from each tank,
   a filter in front EFI pumps and a primer pump in front of EFI pumps.

   Basically, I draw fuel from the left tank and when fuel is getting low I
   turn the right ball valve on and start the right Facet pump running
   from the
   right side and filling the left tank. When level is fine I turn off the
   right Facet and the right ball valve.
   The left Facet is off unless fuel pressure is low, climbing and
   landing. If
   the right Facett fails when filling the left tank then I would turn
   off the
   left facet pump if it is on and the left ball valve to make sure the
   fuel is
   pulled from the right tank.

   Can you see problems with this system?

   Thanks Paul,

   JP

   It is too hard to manage fuel using this system. Too prone
   to pilot error.

   You are returning fuel to only one tank. The left side.
   If you withdraw fuel from just the right tank you will
   rapidly run out of fuel in that tank or pump fuel overboard
   through the left tank vent line. As much as 80% of the fuel
   is returned in some circumstances.

   You need a TWO level valve that switches both the feed
   AND the return lines so fuel is always returned to the
   tank it is drawn from.

   Don't nickel and dime the fuel system plumbing. Spend some money
   and get the right two level valve.

   If you have a pusher system you need one or two properly designed
   sump tanks as well.

   Engines stop for two main reasons. Lack of fuel and lack
   of spark. Don't get creative with the fuel plumbing.
   Use what is proven to work.

   BTW please don't send doc files. Screen capture them and send
   them as jpg's.

   Paul Lamar ...No rotor no motor.

I figured I'd go really simple and copy Tracy Crook's system- take the
fuel out of  and return to the left tank,  and use a pump to transfer
fuel out of the right tank to the left. The  worst that can happen is to
transfer too much over to the left tank and pump the excess overboard.
Then you are left with the right tank empty and the left tank full.
(Unless someone can see some other scenario that I have overlooked)

I've got one of Bulent's 6 port valves left over, so any offers  on it
will be considered.

Brian Trubee


That is fine as long as you don't get distracted and let
it pump fuel overboard.

Another scenario is if the right tank vent is pointing forward
it will empty the right tank to the left tank and force all fuel
out of the left tank vent in short order at over 150 MPH.

The safest thing to do is keep that valve you have and use it.


Paul Lamar ...No rotor no motor.

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