All connecting rods, pistons, and counterweights are matched and balanced per the manufacturer’s requirements. Every engine overhauled by Airmark Overhaul incorporates a static and dynamic balancing of the internal rotational parts. This process considerably improves the life and operational characteristics of your engine. The improved parts balancing delivers a more efficient, powerful and smoother running engine with less wear on the parts than an engine that is not taken to the parameters of this process. This also reduces the vibrational effects that the pilot will experience in the cockpit.