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No... at the flows and pressures we are using (and barring any major
obstructions between the regulator and the injectors), the regulator
can be anywhere in the circuit and adequately regulate the pressure.
On Chris Barber's install, I purchased the Mistral intake for use on
his engine. The fuel rail was a dead end tube with a pinhole on the
end. Presumably the pinhole was to prevent vapor lock in the fuel
rail. The regulator HAD to be upstream of the injectors when using
the intake. We had stable fuel pressures and no problems getting
fuel to the engine.
We had return lines from the pinhole end of the rail, as well as
from the pressure regulator, that fed back to the sump tank. Since
there were not check valves running from the wings to the sump,
there was no chance of pressurizing the sump.
Dave
On 8/30/2011 10:30 PM, CozyGirrrl@aol.com wrote:
Ed, I must have mispoke to give this impression, I thought
the pressure reg HAD TO be last in line to maintain pressure
in the fuel rail?
Chrissi & Randi
www.CozyGirrrl.com
CG Products, Custom Aircraft Hardware
Chairwomen, Sun-N-Fun Engine Workshop
If the pressure
regulator is place before the injectors then there
is less fresh fuel flowing through the rails.
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