Overhead view of 2,700cc motor on Pietenpol. Gray tubes are intake, white are exhaust. This motor has front starter. Side view of same motor. Plane uses cast iron manifolds, Stromberg carb mounts on bottom of intake.
Motor has deep sump aluminum pan.
Exhaust has ball joint to prevent cracking. Motor does not use fuel pump. It has gravity feed system. On break-in stand with test club and shroud. Plane underwent cosmetic restoration in 1999.