"Rogers, Bob J." wrote:

                How about putting a fuel cooler in the return line back to
the "tee"?  Wouldn't that solve the problem?
                Here is a web site that sells them: http://www.jegs.com/
Here is a picture of the cooler.

That certainly is one of the options but I would still return the fuel to
the tank. It is very dangerous to have a pump in the cowl and tee the
return fuel back to the input side of the pump. Even through a cooler I
think.
This is the sort of thing that you don't want to mess with. Copy a tried
and true system that has been working for years. The savings in cost or
time is not worth the risk.

Paul Lamar

Chuck Dunlap wrote:

When I was setting up my fuel system, I noticed vapor bubbles in the return
line. I was temporarily using a clear hose from the Mazda fuel regulator low
pressure side.. I'm not sure where the bubbles came from, but I had no leaks
in the fuel system. I don't think you would want to tee back to the fuel
pump because the vapor would have no way to escape. It also would be hard to
purge air out of the system in the first place.

BTW I have one of those coolers still unopened. I was going run coolant thru
it to use it as a cockpit heater but it looked way too small. I now have a
Setrab oil cooler for cockpit heat and it stays nice and warm in there!

Chuck Dunlap

I noticed you have had a cold snap down there in sunny Arizona Chuck :-)

Paul Lamar
 
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