24-01-2020, 04:14 PM
My father was an advocate of the Whatmough-Hewitt head until at on race meeting the roof of the combustion chamber of one cylinder, modified for oversize inlet and high-lift, fell in and stopped the plot.
From then on Simplicity wore a slightly modified 9E head, with some measure of success.
From then on Simplicity wore a slightly modified 9E head, with some measure of success.