GENERAL SPECIFICATION
VALVE
TIMING.
[With valve-rocker clearance set at 0.015" (0.38 mm.)].
Inlet valve opens 15" before top dead centre.
Exhaust valve closes 15" after top dead centre.
(15"
before
or
after
T.D.C.
is equivalent to
0.081"
piston traael or
1.5"
(3.81
cm.)
~neasured round the flywheel adjacent to the starter teeth).
VALVE-ROCKER CLEARANCES (see page 25).
IGNITION
TIMING
(see page 26).
Set to fire at 4' before top dead centre (distributor contact points just
opening). As the advance is fully automatic, the setting is at full retard.
Contact breaker gap should be set at 0.015" (0.4 mm.).
ROAD SPEED DATA
NOTE.-The tyre radius increases with speed so that at 100 m.p.h. the
engine speed is
4,800 r.p.m. in top gear.
Gearbox ratios
-
Overall ratios
at 10
m.p.h.
Engine speeds
at 10
km./hr.
First
3.38
12.5
Second
2.00
Top
1.00
Reverse
4.28
15.8 7.4
500 1000
--
Third
1.325
310 410
620
1
lO5O
1325
1680
2130
--
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