RE: YS ENGINE DESIGNATIONS AND POWER
There are only 3 140's. The Sport (same as the FZ), the 140L(discontinued) and the DZ. Horsepower for the Sport-2.75, L-3, and the DZ-3.25. They all make more HP than any of the competition, even their bigger displacement engines. If they didn't, why would YS engines dominate the aerobatics contests both in National and International venues?