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Pilot Zone / Re: Bought a Navion
« on: December 14, 2020, 06:31:40 AM »225 HP. The problem with that engine isn’t the HP as much as it’s no longer supported by Continental, so overhauls would be expensive.
The IO-520 and 550 are current production engines. They’re used on Bonanzas and Cirrus. They say ever time a Cirrus pops a chute, a Navion gets an engine.
Not sure about the Continental support for the IO-470-H, but that’s a common engine for a Navion too.
My personal preference is the O-470. Bulletproof engines. The 470 is the modern version of the E225.