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New 912 Fuel Pump

in 912 / 914 Technical Questions 13 years ago

  • Re: New 912 Fuel Pump

    by » 13 years ago

    Here is a few pics of the new pump.



    For guys who have installed this new pump can you tell if your Fuel Pressure is
    higher?
      
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  • Re: New 912 Fuel Pump

    by » 13 years ago

    I have not installed one of the new pumps yet, but have feed back that pump pressures are higher and few a little too high, but I do not know the circumstances of the too high cases (i.e. running with and electric on at the same time, ect). It may have been an installation setup issue. Time will tell. I would like to hear more feed back from the new pump users as well and their configurations.

    Roger Lee
    LSRM-A & Rotax Instructor & Rotax IRC
    Tucson, AZ Ryan Airfield (KRYN)
    520-349-7056 Cell

    Thank you said by: Jez O'Hare
      
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  • Re: New 912 Fuel Pump

    by » 13 years ago

    I installed the new pump last week on an RV-12 with Rotax 912ULS. During a groundrun with both electric pump and engine driven pump, the pressure was just under 5 psig at 2400 rpm. Obviously pressure drops as rpm increases. Flying at 5100 +/- rpm with both pumps on the pressure is in the 3.5 psig range ... which is close to what I saw with the old pump.
      
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  • Re: New 912 Fuel Pump

    by » 13 years ago

    How is the new #893110 FUEL pump?
    Any issues like low or high pressure?
      
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  • Re: New 912 Fuel Pump

    by » 13 years ago

    new pump works fine. spring is stronger so understandably pressure is a tad higher...on a 12 hour trip last weekend mine ran around 4.8psi on the Dynon (which says .4 when its off!). Ran the leak drainage line down near the opening at the bottom of the firewall. Kind of confusing as they say stay away from high pressure, low pressure and the slipstream...duhhhh. The old one is put on with ferrules which is a pain taking off and damages the hose but you still have enough. Put back on with band clamps. Put firesleeve on top with band clamps.
      
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