Valve, Intake/Exhaust

Combustion chamber volume 53.5 - 50.5 cc (3.2648 - 3.0817 cubic inch)
Valve arrangement (front to rear) - LH E-I-E-I-E-I-E-I
Valve arrangement (front to rear) - RH I-E-I-E-I-E-I-E
Valve head diameter - intake 44.63 - 44.37 mm (1.7571 - 1.7469 inch)
Valve head diameter - exhaust 36.01 mm (1.4177 inch)
Valve face runout 0.05 mm (0.0020 inch)
Valve face angle 45.75 - 45.25 degrees