Speedway Workshop

 
The JAP 4-Valve

With the advent of 4-valve Speedway machines, JAP made a last effort to remain competitive. Here are two views of the rare four-valve dohc speedway JAP engine that represented virtually the last development of this famous engine. Here it is built into a Grass Track frame.



About the Speedway Workshop Archive
Phil Aynsley Photography
Phil Aynsley Photography
Thousands of quality photographs featuring Ducati, Moto Guzzi, MV Agusta and numerous other marques. An index to many of the amazing galleries on his site is available here:
Phil Aynsley's Motorcycle Photos