----- Original Message -----
Sent: Thursday, March 13, 2003 7:39
AM
Subject: [FlyRotary] Fuel Injection
Hi, fellow rotary enthusiasts. I'm
directing this question primarily to Rusty, as he has a similar Dave Atkins
fuel system such as I have, but I certaintly welcome comments from any and
all.
My TWM throttle
body I purchased from Dave Atkins has two injectors already installed on the
throttle body. It also has the fuel rail, and I have still in the box, the
fuel pressure requlator. I assume that my fuel flow will go from the
tank, through the fuel tank selector valve to the fuel pump, then through the
pressure regulator, to the injectors. My question is.....do I need to
allow a return to the fuel tank for unused or excess fuel? If so, do I
take it from the fuel rail opposite the pressure requlator? I am,
unfortunately, a complete layman when it comes to fuel injection, so please be
gentle on me. I noted that on the injectors that came with my engine,
that the injectors have a small tube protuding 90 degrees from the injector,
which I assume was for the purpose of returning fuel to the tank? Thanks
in advance for everyone who takes the time to educate/enlighten me regarding
the fuel injection system. I sincerely appreciate the help.
Paul Conner, 13B powered SQ2000 canard under
constructrion.
Paul, the usual EFI plumbing has the regulator as
the last point on the fuel rails. The return port should be on the
regulator itself. Yes, you absolutely need a separate return port on
your fuel tank.
I have no idea what the 90- degree pipe is on
your injectors. Never saw one like that before.
Tracy