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Thread: Rotax 912 Engine install

  1. #1

    Default Rotax 912 Engine install

    while trying to install a Rotax 912 engine into my Kitfox IV the starting motor at the rear of the engine hits the firewall before the engine mounts can reach the engine attach tabs on the fuselage. Is there an easy fix or do i need to modify the fire wall by cutting part of it away and rework the firewall?
    Frustrated, Tommy

  2. #2
    Senior Member bbs428's Avatar
    Join Date
    Jan 2015
    SW Missouri

    Default Re: Rotax 912 Engine install

    I have a model 5 so I don't know, but a search on the subject brought this thread up. Note section E. Firewall. Hope it helps.

    Other searches might yield more info.

    Model IV - 582 to 912 conversion (
    "Somebody said that carrier pilots were the best in the world, and they must be or there wouldn't be any of them left alive." Ernie Pyle

    Brett Butler
    Flying: N46KF, 1998 Model 5 Outback, 912ul 110hp, G3x with 2 axis a/p, Beringer wheels & brakes, SS7 firewall forward, NR prop, Custom paint

  3. #3
    Senior Member
    Join Date
    Apr 2009
    Chisholm Mn

    Default Re: Rotax 912 Engine install

    This is what I did on mine. After it was done, I thought I could have stretched the firewall material instead of cutting a chunk out of it and putting in a separate piece that I pounded into shape. The way I did it was safer though. Didn't stand near as much chance of ruining the firewall. JImChuk
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