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Message
OK! So what size? Already have 1/4"
vent, 1/2" supply. Should the return be larger then supply, similar to oil
return lines? Don't want to have to do it three times (like I usually
do)
Hi
Tom,
Yes, you need
to run return lines, unless you have some sort of header tank that can be used
for the return. I believe we can probably all agree that it's best to go
back to the tank though. If you use a system like Tracy has, where you
feed from only one tank, then you can return to only that tank as well. If
you think you might ever install a duplex valve to feed/return from both tanks,
then you'd better install a return on both tanks now. (You're welcome Rich
<g>).
You can run
the returns just through the root rib, but it's somewhat better to run them to
the far outboard end, similar to the way Van has you run the vent line. It
gets the warmer fuel outboard, away from the pickup, and positions it in an
air pocket, so there won't be any backpressure on the return line.
You can also run the pumps for a few minutes to aid in mixing the oil
into the fuel if you're using premix.
As for the
size, there's no need for larger return lines than what you ran for the supply,
though it certainly wouldn't hurt. I'd run AN-6 size for all the fuel
lines.
Cheers,
Rusty
(video's were cool Bob)
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