Quote:
Originally Posted by cr45
Subaru would make an ideal conversion as you could run it as an opposed piston twin. This would result in perfect primary and secondary balance and hence this conversion would be considerably smoother than a straight 4 conversion.
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I know flat-twin conversions based on the Volkswagen boxer are quite common for ultralight aircraft, but it would be more complex to do in a Subaru engine. If I were all for a flat-twin I'd rather get a BMW R-series engine or doing something based on the VW boxer instead of messing with the Subaru engine.