Four Valve Cylinder Head
Rudge Python 250, 350 and 500cc engines with four-valve heads were introduced in 1930. Moto Borgo fitted 4v heads in 1920.
Further information: Four-Stroke Engine Basics
Four Valve Cylinder Head
Rudge Python 250, 350 and 500cc engines with four-valve heads were introduced in 1930. Moto Borgo fitted 4v heads in 1920.
Further information: Four-Stroke Engine Basics