Cylinder Head, 998CC, 'A' Plus 1980 on
Label Part No Description Quantity Comments
1 CAM6517 Cylinder head-low compression 1 N.L.A
1 CAM6812 Cylinder head-high comp. use TAM2168. H.C. Triple collet groove 1 N.L.A
1 CAM4180 Cylinder head, lead free, was TAM2168 1 N.L.A use [LINK]GCG1007MS[/LINK]
2 CHS2515 Stud, water elbow 3 See [LINK]C-STR281[/LINK] kit
3 51K885 Stud, rocker posts/cover long 2
4 51K1473 Stud, rocker posts short 2 Replaces CHS522 A plus type
4 CHS522 Stud, rockers posts short 1984 on 2 N.L.A - Use [LINK]51K1473[/LINK]
5 53K487 Stud, manifold 6 See [LINK]C-STR282[LINK] kit
5 C-STR282 Stud, manifold kit - Stainless steel 1
6 53K402 Stud, heater tap valve take-off 2 See [LINK]C-STR285[/LINK] or [LINK]C-STR283[/LINK] kit
6 C-STR285 Stud kit, heater tap valve take-off - Stainless steel 1
6 C-STR283 Bolt kit, heater tap valve take-off - Stainless steel 1
7 12G1963 Valve guide, was 2A608 8
8 RU612123 Oil hole plug 1 N.L.A - Use [LINK]2K1345[/LINK]
9 2A180 Blanking plate, heater take-off 1 If required
10 88G221 Gasket 1
11 GFK3211 Nut 1/4”UNF 2 See [LINK]GFK3211S[/LINK] also
12 GFK1124 Washer for nut 2
13 TAM2152 Valve seat insert inlet, lead free 4 Was AEA762 leaded
13 TAM2068 Valve seat insert exhaust, lead free 4 Was AEA763 leaded
14 TAM1062 Inlet valve H.C. and lead free, 1984 on 4 Triple collet groove 27mm wide
14 TAM1770 Exhaust valve H.C. and lead free, 1984 on 4 Triple collet groove 25.4mm
14 CAM6502 Inlet valve, cotter groove at .140 thou from valve tip. Use [LINK]12G1015[/LINK] spring. Last type before triple groove 4 C.W.E 27mm(1.0625”) wide
14 CAM6503 Exhaust valve, cotter groove at .140 thou from valve tip 4 N.L.A - Use[LINK]12G1015[/LINK] spring
14 CAM6505 Exhaust valve, cotter groove at .140 thou from valve tip. Use [LINK]12G1015[/LINK] spring. Last type before triple groove 4 Lead free, chrome stem
14 CAM6391 Inlet valve, top of cotter groove .220 thou from valve tip 4 Use [LINK]AEA311[/LINK] spring 27mm wide
14 12A1987 Exhaust valve, top of cotter groove .220 thou from valve tip 4 Use [LINK]AEA311[/LINK] spring
15 12G1015 Valve spring for all triple collet valves 8 Plus CAM6502/3/5 also
15 AEA311 Valve spring, earlier heads 8 For [LINK]12A1987[/LINK] / [LINK]CAM6391[/LINK]
16 88G617 Top cap, single groove 8 Alternative [LINK]AEA653[/LINK]
16 AHU1897 Top cap, twin groove top cap, triple groove valve 8
17 ADU4905 Valve oil seal 8 Or as required
18 88G459 Cotter, single groove valve 16 8 pair
18 CAM6975 Cotter, double groove valve. A Plus 16 8 pair
19 12A1950 Rocker shaft 1
19 C-AEG399 Rocker shaft high quality 1
20 12G1926 Rocker shaft post with oil feed hole 3
21 12G1927 Rocker shaft post tapped 1
22 2A259 Rocker shaft post locking plate 1 N.L.A - Use [LINK]2A515[/LINK] and modify
23 2A258 Locating plate plug 1
24 6K556 Rocker spacer spring 3
25 CAM289 Rocker sintered 8
26 12G1221 Rocker forged 8 Alternative in sets
27 2A21 Rocker bush 8 Not fitted to [LINK]CAM289[/LINK]
28 AEG167 Adjusting screw 8
29 NT605061 Adjusting nut 8
30 51K1193 Cylinder head nut, until [LINK]CAM4545[/LINK] 9
31 GFK1115 Washer, until [LINK]CAM4545[/LINK] fitted 9
32 CAM4545 Head nut with built in washer 9 Fitted std from 1979 on
33 GUG702560HG Cylinder head gasket, was TAM2121B and AJM302 1 For gasket sets see page 28
33 GEG300 Cylinder Head gasket, copper 1 For gasket sets see page 28
33 C-AEA647 Cylinder head performance composite gasket 1 For gasket sets see page 28
34 2A18 Rocker shaft spring washer 2