•
GUDGEON
PIN
Type
Fit
in piston
Diameter (outer)
..
Fit
in connecting rod
GENERAL
DATA-continued
(M
I N I -
COO
PER'S'
-
con
tin
u e
d)
Pressed in connecting rod.
Hand push-fit.
·8123
to
·8125 in. (20·63 to 20·64 mm.).
·0008 to ·0015 in. (·020 to ·038 mm.) interference.
•
VALVES AND VALVE GEAR
Valves
Head diameter: Inlet
..
Exhaust
Valve lift
Stem diameter: Exhaust
Inlet
Valve rocker clearance: Standard
Competition
Timing
Inlet valve: Opens
Closes
Exhaust valve: Opens
..
Closes
..
VALVE SPRINGS
Free length: Inner
Outer
Number
of
working coils: Inner
Outer
Pressure: Inner: Valve closed
..
Valve open
Outer: Valve closed
Valve open
1·401 to 1·406 in. (35·58
to
35·71 mm.).
1·214 to 1·219 in. (30·83
to
30·96 mm.).
·318 in. (8·08 mm.). nominal.
·2788
to
·2793 in. (7·08
to
7·09 mm.).
·2793
to
·2798 in. (7·09 to 7·11 mm.).
·012 in. (·30 mm.) cold.
. . ·015 in. (·38 mm.) cold.
..
·021 in. (·53 mm.).
50
B.T.D.C. ] . h
021·
(
53
) 1
450
A B D C
WIt·
Ill.·
mm. va
ve
51
0
B:B:D:C: rocker clearance (for checking
21
0
A.T.D.C. purposes only). .
1·705 in. (43·31 mm.).
1·740 in. (44·19 mm.).
..
61-.
..
4t·
..
26·6 lb. (12·065 kg.).
46 lb. (20·865 kg.).
49·6 lb. (22·498 kg.).
94 lb. (42·638 kg.).
• CAMSHAFT
Journal diameter: Rear
Inside diameter (reamed in position): Rear
..
Running clearance: Rear
Bearing length: Rear
ENGINE LUBRICATION SYSTEM
Oil pressure (normal running)
..
1·37275 to 1·3735 in. (34·87 to 34·88 mm.).
1·3745 to 1·3750 in. (34·91
to
34·92 mm.).
·001
to
·00225 in. (·025
to
·057 mm.).
U±·010
in.
(l9·45±·25
mm.).
60 lb./sq. in. (4·22 kg./cm.
2
)
at 70° C. (158
0
F.)
oil
temperature.
•
COOLING
SYSTEM
Thermostat setting
FUEL SYSTEM
Carburetter needle:
970 c.c.
1071
c.c.
1275 c.c.
MINI. Issue
1.
4908
. . 82
0
C. (180
0
F.).
AN.
H6.
..
M.
General Data 1S
mk1-performance-conversions.co.uk
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