Cylinder boring increases engine displacement, and helps the engine develop more power. This is the tried and true method for adding horsepower to any machine. Larger piston assemblies that match the bore are required, and in some cases re-plating may also be necessary. Generally there is a safe range of bore sizes for each engine that have been tested and known to yield the best results - please consult with our experts for advice regarding your performance engine build and let Orient Express build a championship winning engine for your machine!