I don’t know what it is about the B3 engine, but ever since my sister had her Ford Aspire I loved that little guy. Not the Aspire, didn’t care for that car, just the engine. It puts out 63hp @ 5,000 rpm and 74tq @ 3,000 rpm with later versions putting out as much as 73hp @ 5,500 rpm and 80tq @ 4,000 rpm. It really is suited to a lighter vehicle than the 2,000lb Aspire. What better than a motorcycle?
I figure if I built a custom cruiser and used that little engine, I’d image it would weight in at a quite heavy 800+ lbs. But, with a few modifications like a cam, head work and a larger throttle body, I think we could see 90hp and 100+tq. That would move that bike around with no problem, and should still get 40+ mpg.