THR, a 1600cc BDA is a 4cyl, 4 stroke twin cam 16v engine. A 500cc V4 2-stroke with 4 cams has effectively twice the potenial power output of a 500cc 4-stroke so yes 240bhp is within reach to an ultra efficient 500cc 2stroke engine reving to about 12,250rpm. Honda's 1999 750cc V4 4cam 4-stroke superbike engine in the RC-45 produces 180bhp at 15,000rpm.
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