The two-stroke engine has been developed to a degree that was not thought possible a few years ago. One of its virtues is that it is mechanically very simple, which is a contributing factor to its widespread use and varied application. Here, engine-tuning expert A. Graham Bell takes the reader through the various modifications that can be made to a two-stroke and its components to give maximum useable power output and mechanical reliability. 'the words happily avoid textbook syndrome'

First published more than 30 years ago and in continuous print ever since, this remains one of the most comprehensive references available to the enthusiast engine tuner and race engine builder. Drawing on the author’s many years of practical experience in tuning and modifying high-performance road, rally and race units, every aspect of an engine’s operation is explained and analysed. Detailed modifications and improvements are suggested and described in the author’s practical, down-to-earth style, making this book essential reading for anyone involved in building high-performance engines.