• Cylinder Effective Compression Ratio Balanced Cylinder combustion chamber and intake port volumes are cubic centimeter (CC) tested for uniformity by fluid test methods for improved engine power and superior engine smoothness on XR Black Edition VIITM engines. New cylinder castings have varying intake port and combustion chamber volumes and can cause changes in individual cylinder horsepower output. A cylinders position installed on an engine can also change individual cylinder horsepower output due to changes in available induction air flow and cylinder cooling causing uneven cylinder effective compression ratio balance. By balancing the individual CC level of a cylinder to the available induction airflow and cylinder position on an engine, a superior improvement can be obtained in providing for the ultimate in engine smoothness and power balance of an engine.

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• Multiple Angle Valves and Seats Machined Engine intake air flows in and out of the combustion chamber through the intake and exhaust system by the opening and closing of the valves. As the air passes through the cylinder intake and exhaust ports, the flow of air can be affected by the curvature or radius of the openings caused by the shape of the valve and seat angles. Using specialized equipment, Victor’s technicians can shape these openings and improve the airflow and venturi characteristics by blending an improved curvature radius into the airflow path. Multiple angle valve and seat machining is very effective in making the air flow more efficient. As a result, improved engine performance and fuel efficiency can be obtained with an enhanced throttle response.

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• Reciprocating and Rotational Engine Balanced Engine thrust may be increased by reducing the amount of power wasted in attempting to offset counterbalancing forces induced by out-of-balance internal components. Improving parts balance allows the engine to deliver more power to the propeller and the engine becomes more efficient with less wear on internal moving parts. “Power-By-Victor” Black Edition V™ Engines are uniquely real-time motion balanced by Victor’s A.S.E certified master machinists to within one gram. With this F.A.A. accepted process, individual parts and cumulative reciprocating mass weights are balanced, to provide for the best longevity and smoothness of the engine. Balancing not only improves thrust but also reduces pilot and passenger fatigue by lowering the amplitude of various vibration frequencies generated by the engine.

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• Diamond Cut and Matched Piston Rings Precision machining and matching piston rings can create a power advantage by maximizing dynamic engine compression while still maintaining good oil control. This involves both proper ring selection for the intended use and diamond cutting machining procedures when gapping your rings. Piston ring sets come pre-gapped from the parts manufacturer and are not matched to precision fit a cylinder bore. That simply isn't precise enough  where gaps should be accurate to within 0.001 inch or less for best engine power. Victor's  technicians precision match piston rings to each individual cylinder bore using highly specialized diamond cutting and finishing techniques to close tolerances. This process assures better cylinder compression and enhanced cylinder performance.

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