Cooper 'S' MK3 (12H397/12H398) & 12G Eng Nos.
Label Part No Description Quantity Comments
1 AEG624 Connecting rod 4
2 C-STR288 Con rod bolt and nut set 1 Was AEG519
3 AEG147 Con rod bolt nut 8
3 EAC5541A Connecting rod multipoint nut, non nyloc - Alternative 8
4 AEG623 Original crankshaft in EN16, tuftrided (12G1505 forging - stamped AEG622) 1 N.L.A, - Use [LINK]C-AEG479[/LINK]
4 C-AEG479 Crankshaft 1 1275cc EN40B (Nitrided only)
4 12G1287 Crankshaft (fitted solid wall block, 1300 mains size) 1 N.L.A - 12G type 1.625” journal
5 6K836 Crankshaft keyway 1
6 VP572-00 Con rod bearing set (8G2399) Mahle - Std/10/20 only 1 Mahle was Vandervell
6 AEB572-00 Con rod bearing set ACL 1 Also in 10/20/30/40 oversize
6 VC1017-00 Connecting rod bearings Mahle race 1 Std/10 only
7 VP91120-00 Main bearings set (8G2391) Mahle - Std/10/20 only 1 Mahle was Vandervell
7 AEM91120-00 Main bearing set ACL 1 Std/10/20/30 only
7 VM1004-00 Main bearings set Mahle race 1 Std/10 only
8 AEW2136 Thrust washer kit was (VP41 & BHM1293) 1 Std/3 thou oversize
8 VPW41 Thrust washer set, Vandervell 1 Std/30 thou oversize
9 22G1053 Primary gear (24 teeth) 1
10 DAM8889 Front bush was 22G770 1
11 22G109 Rear bush 1
12 DAM6490 Primary gear shim 2.84-2.89mm (.112-114”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [LINK]22A319[/LINK] and [LINK]88G549[/LINK] for wear.
12 DAM6486 Primary gear shim 2.89-2.94mm (.114-116”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [LINK]22A319[/LINK] and [LINK]88G549[/LINK] for wear.
12 DAM6487 Primary gear shim 2.94-2.99mm (.116-118”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [LINK]22A319[/LINK] and [LINK]88G549[/LINK] for wear.
12 DAM6488 Primary gear shim 2.99-3.04mm (.118-120”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [LINK]22A319[/LINK] and [LINK]88G549[/LINK] for wear.
12 DAM6489 Primary gear shim 3.04-3.09mm (.120-122”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [LINK]22A319[/LINK] and [LINK]88G549[/LINK] for wear.
12 DAM6492 Primary gear shim 3.09-3.14mm (0.122-124”) 1 These shims are used to give the correct end float of 3-6 thou on the primary gear check [LINK]22A319[/LINK] and [LINK]88G549[/LINK] for wear.
13 22A319 Thrust washer U clip 0.125” (3.17mm) 1
14 88G549 Backing ring 0.163-0.165” (4.14-4.19mm) 1
15 AEG523 Camshaft 1275cc except ‘S’ with 12G engine numbers 1 N.L.A - Spider drive 1/2”lobes
15 AEG542 Camshaft Cooper ‘S’ with 12H397/12H398 engine numbers 1 N.L.A - Spider drive 1/2”lobes
16 WKN505 Keyway 1
17 CHM108 Oil pump driving flange 1 N.L.A
18 AHU2379 Camshaft locating plate 1
19 GFK5179 Bolt for locating plate 3
20 GHF321 Shake proof washer for locating plate 3
21 12G1397 Camshaft gear cast iron 1 Gears and chains available as [LINK]C-AJJ3323[/LINK] Duplex kit in cast iron. Or S12 in steel.
22 12G1699 Crankshaft gear cast iron 1 Gears and chains available as [LINK]C-AJJ3323[/LINK] Duplex kit in cast iron. Or S12 in steel.
23 6K629 Camshaft nut 1
24 2A759 Locktab 1
25 2H4905 Chain 1 See [LINK]2H4905MS[/LINK] upgrade
25 2H4905MS Timing chain - Double row, performance 1
26 6K628 Washer to shim crank gear A/R As required
27 12G619B Front plate 1 For gasket sets see page 28
28 AEG161 Front plate 1 N.L.A
29 SH605051 Screw plate to block 2
30 GFK1125 Washer was LWZ305/GHF332 2
31 AEA687 Screw, front plate to maincap 2
32 AEG314MS Push rod 8 See [LINK]C-AEG582[/LINK]
32 C-AEG582 Push rod 1275cc (3 piece for performance use) 8
33 AEG584 Cam follower with oil hole 8 Alternative to [LINK]2A13[/LINK]
33 2A13 Cam follower less oil hole 8 Alternative to [LINK]AEG584[/LINK]
34 12G4499 Distributor spindle 1 C.W.E
35 13H2792 Distributor housing oil seal 1
36 12A1136 Distributor housing 1 N.L.A