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The very common Precision Silverhawk or Bendix does not require a return.
I believe the ECI and EFII both require a return. I think Airflow builds two models for that engine, one with and one without. I went with the Precision partially for that reason and so far am happy with that decision. |
Quote:
"Fuel return line installation. Electronic fuel injection fuel systems include a full return fuel system which feeds 20 to 30 gallons per hour through the engine fuel rail at all times. The engine uses what it needs out of this supply and the unused fuel is returned to the selected fuel tank. Below, you can see the installation of the fuel return into the fuel tank. Note - it is not necessary to disturb the original tank access panel which supports the fuel feed line and fuel level sender. A new 2.5" cover panel supporting the -6 return fuel bulkhead fitting is fabricated and sealed to the tank with pro-seal." http://flyefii.com/customer_projects...v8a/duggan.htm |
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