Scott Gettings wrote:

Attached is a pic of the stock Renesis main fuel rail.
Its lines both attach near the center, and it has a device
that appears to be a pressure damper.  It is relatively
heavy, and really should be converted to AN fittings
instead of the stock plumbing.

Mark Sipe replied:

Yes, it's a pulsation damper.  The RX-8 uses a single
non-returning line fuel system with the pressure regulator
located in the fuel tank with the pump.

Russell Kent asked:

If the RX-8 indeed uses a non-returning line fuel system (and I'm
*not* claiming otherwise), then what's the second fitting on the
fuel rail for?

Mark Sipe replied:

That's the main fuel rail.  The system feeds it and then on to a
another fuel rail.

I'm attaching a picture of the fuel system layout, not sure if it will
go through or not as some previous attempts did not appear to.

For a system that has a non-returning fuel line system there sure seem
to be an absurd number of pipes attached to the fuel tank. The top of
the diagram seems to have cropped something; can you tell me what that
is? (It appears to be the tank vent & leak detection.)  And while you're
at it, what's with the Rube Goldberg-esq pipes coming out of the top of
the fuel tank?

Russell Kent



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