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Home
Catalogues
Classic Mechanical Parts Manual
Engine
Cylinder Head Cooper 'S' 970CC, 1071CC and 1275CC
Cylinder Head Cooper 'S' 970CC, 1071CC & 1275CC
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Label
Part No
Description
Quantity
Comments
1
12G1805
Cylinder head (12G940) casting
1
N.L.A - 35mm inlet/29mm exh
1
38G360
Cylinder head (AEG163) casting
1
N.L.A - 35mm inlet/31mm exh
2
CHS2515
Stud, water elbow outlet
3
See
C-STR281
alternative
3
51K885
Stud, rocker cover long
2
4
51K1473
Stud, rocker cover short
2
5
53K487
Stud, manifold
6
See
C-STR282
alternative
6
53K402
Stud, heater tap
2
See
C-STR285
also
7
C-AHT281
Extra cylinder head bolt, was AEG248
1
8
12G1963
Valve guide, tapered nose
8
8
C-AJJ4037
Bronze hidural valve guide, when EN214N valves fitted
1
AEG163 casting / race heads
9
2K1345
Oil hole plug
1
10
12G2092
Water hole plug
3
N.L.A
11
AEA771
Water and dowel hole plug
2
12
12G3503
Cleaning hole plug, was CAM4133 & 12H1734
2
13
2A180
Heater take-off blanking plate
1
When required
14
88G221
Heater tap gasket
1
15
12G1089
Inlet valve insert seat
4
N.L.A
15
12G2675
Exhaust valve insert, leaded N.L.A
4
Use
TAM2069
for lead free insert
16
AEG593
Inlet valve EN214N material 35.6mm (1.4”) short stem length
4
AEG163 casting only
16
AEG592
Inlet valve 35.6mm (1.4”) Long stem valve
4
12G940 casting only
16
AEG594
Exhaust valve EN214N material 31mm (1.21”) short stem length
4
AEG163 casting
16
AHU1049
Exhaust valve 29.2mm (1.15”) diameter (long stem) was 12G1322
4
12G940 casting
17
AEA767
Outer valve spring
8
N.L.A - See kits
C-AEA525
/
C-AEA526
17
C-AEA525
Inner and outer valve spring set
1
17
C-AEA526
Inner and outer valve spring set - Race
1
18
12G1137
Inner valve spring
8
N.L.A - See kits
C-AEA525
/
C-AEA526
19
88G617
Top cap
8
See
AEA653
stronger cap
19
AEA653
Top cap, steel (was “W” stamped)
8
Cooper ‘S’
20
AEA403
Bottom cap
8
Use
C-AEA654
alternative
21
AEG327
Valve oil seal, inlets valves only on MK3 ‘S’
8
Or as required
21
LJQ101160
Top hat seal - Dupont Viton
4
Alternative upgrade/ as required
22
88G459
Valve cotter
16
8 pair
23
12A1950
Rocker shaft
1
23
C-AEG399
Rocker shaft performance
1
24
12G1926
Rocker shaft post with oil hole
3
25
12G1927
Rocker shaft post tapped
1
26
AEG168
Spacer rocker shaft .040”
1
Or as required
26
AEG169
Spacer rocker shaft .010”
1
Or as required
27
2A259
Rocker post locking plate
1
N.L.A - Use
2A515
& modify hole
28
2A258
Locating plate plug
1
29
6K556
Rocker spacer spring
3
30
12G1221
Rocker, forged
8
31
2A21
Rocker bush
8
32
AEG167
Rocker adjusting screw
8
33
NT605061
Rocker adjusting nut
8
34
GEG300
Head gasket, copper
1
34
GUG702560HG
Head gasket, AF470 was GUG2507HG
1
Has sealing ring for rocker oil feed
34
TAM1521
Cylinder head gasket, BK450 - For gasket sets see page 28
1
Original Black in colour
35
51K1193
Cylinder head nut
10
36
GFK1115
Washer
10
Was PWN106
37
MSSK061
Cylinder head ancillary stud and nut kit
1
38
2A18
Rocker shaft spring washer
2
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