Undoubtedly, the virtue which has most contributed to the widespread use and varied application of the two-stroke engine is its mechanical simplicity. Tuning expert A. Graham Bell takes readers through the various modifications that can be made to a two-stroke and its components in order to derive maximum useable power and mechanical reliability. Both the latest advances in two-stroke tuning and old standbys are covered for all areas of operation, from ignition, carburetion, cylinders, and valves through exhaust systems and dyno tuning. Updates to this expanded edition include new photography, line diagrams and explanatory charts.