Thunderbird Technical Data; Ignition; Carburetor - Triumph SPEED TWIN 1945 Workshop Instruction Manual

i c r ~ f i ~ c o l
Data
T H U N D E R B I R D
(6T)
T E C H N I C A L
DATA
E N G I N E
Type
. .
...
...
...
...
.
.
... ...
O.H.V. T w i n
0 . 5 P.
a t
R.P.M.
...
...
...
.
..
...
... 34
a t
6300
Bo-c
. . .
... ...
...
... ...
...
..
2.79 ins.
(71 rnrn.)
Stroke
. . . . . .
...
...
...
...
...
...
3.13
ins.
(82 rnrn.)
Capacity
... ...
... ...
...
...
.
40 cu. in. (649 c.c.)
Compression Ratio
... ...
... ...
...
.,. 7 : 1
Valve Clearance (Cold)
...
... ...
...
...
0.010 in. (0.26 rnm.)
Valve Timing:-(with ,020 in. Tappet clearance for checking)
Inlet Valve opens B.T.C.
... ...
...
...
26f
Inlet Valve closes A.B.C.
...
...
...
...
69f0
Exhaust Valve opens B.B.C.
...
...
...
...
61
Exhaust Valve closes A.T.C.
...
...
...
.
,
.
3 5 i 0
I G N I T I O N
Distributor Contact Point Gap
...
... ...
...
0.01 4"-0.016"
(0.36-0.40 rnrn.)
Distributor Range
... ...
...
...
...
...
15"
Sparking Plugs
...
...
... ...
...
...
Champion L10S
Sparking Plug Gap
...
...
...
...
... ...
0.020" (0.50 rnm.)
Ignition Timing (Fully Retarded):
Crankshalt position
...
...
...
... ...
6' B.T.C.
Piston position
... ...
...
...
... ..
4"
(0.8 mrn.) B.T.C.
CARBURETTER
Type
...
...
... ...
... ...
...
...
S.U.
M.C.2
Needle
. . . . . .
... ...
...
...
...
...
M . 9
TRANSMISSION
Gearbox-Type
... ...
...
...
... ...
Positive selection
(Foot operated)
8