1. One example of this is all modern side valve or flathead engines. 2. The PV60 is powered by an 85-horsepower, 3.6-liter 6-cylinder with side valves . 3. Side valves were driven via a gear-driven camshaft, with automatic snifting valve activation.4. The last of these continuation cars were equipped with Ford's side valve four. 5. It utilizes a three-plus-one-valve system with three upright valves and one side valve . 6. The square engine with side valves and a 90?angle. 7. The PV60 is powered by an 85-horsepower, 3 . 6-liter 6-cylinder with side valves . 8. Top of the range was a 976cc side valve V-twin. 9. Production continued of the old models which used a side valve 1086 cc four-cylinder engine. 10. This was followed by a side valve inline-four engine manufactured by Steudel of Kamenz in Saxony.