3 Valves/2 Spark Plugs; One -Way Clutch System - Honda 1984 Shadow VT700C Manual

3 VALVES/ 2 SPARK PLUGS
To have the appeal of a V -twin engine and also
provide good low-speed driveability, plenty of
engine torque and high fuel economy . a 3-val ... e/
2 spark plug head design is used. There are 2 inlet
valves of 31 mm diameter each and 1 exhaust valve
with a diameter of 41 mm.
The spark plugs are located to provide the most
rapid and complete combustion process: one on the
left and one on the right side of the combustion
chamber. This 2 spark plug design gives 30% better
fuel economy and better driveability at low speeds
when compared to a head with only one spark plug.
ONE-WA Y CLUTCH SYSTEM
TECHNICAL FEATURES
First time on a production motorcycle, this system has been proven on the race circuits of Europe in Hondas Gran Prix road
racers.
Rear wheel lock up caused by rapid downshifting and the resulting high engine compression braking force; is prevented by the
slippage of the one-way clutch .
ONE·.,AY CLUTCH
ONE -WAY
I~::~========::::~~
OUTER
CENTER
• Construction
CLUTCH OUTER
COMPo
The one-way clutch is installed with the clutch center inside the clutch outer. Half the clutch plates are controlled by the
one-way clutch. The one·way clutch allows those plates to slip when backloading fo rce during deceleration might normally
cause the rear wheel to lock-up.
Except for the one-way clutCh , the primary driven gear/clutch assembly is a conventional design.
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