Somerford Mini Ltd. Ordering Parts Using This Catalogue

External Engine - 998 and 1098cc
No. Part No. Description Qty. Remarks No. Part No. Description Qty. Remarks
Rebuilt or Repaired Engine Assemblies
Somerford Mini Ltd. offers an engine rebuilding and repair service, courtesy of its workshop facility. We
can carry out repairs or rebuilds on late-model engines, but the extent of rebuilding on an early engine
is governed by - and sometimes restricted by - parts availability. Please contact us to discuss your Mini
engine requirements - it would be helpful if you could supply us not only the details of what’s gone
wrong with your engine, but also the full engine number (if known) and type (capacity, high or low
compression, gearbox, breathing system, etc.). The more you can provide us with, the better we can
ascertain how we might possibly help you.
Gasket Sets
1 GUG49 GASKET SET, conversion (‘bottom end set’)1 Manual gearbox models.
GEG254 GASKET SET, conversion (‘bottom end set’)1 1967-79, automatic gearbo x models.
LVQ10035 GASKET SET, conversion (‘bottom end set’) 1 1979 on, automatic gearbox models.
Conversion gasket sets (often called ‘bottom end’ or ‘supplementary’ sets) include gaskets for the following:
water pump, front cover, tappet chest covers, front mounting plate, oil pump, oil filter head, engine to
gearbox joint and flywheel/torque converter housing. Washers, seals and O rings are included for the
following: priming plug,drain tap/plug, main bearing cap, front cover, tappet chest covers, distributor
housing and oil suction pipe. Note that the tappet chest cover gaskets included are the post-1966
rubber type - customers requiring the earlier cork gaskets should purchase them separately.
EGS001 GASKET SET, full engine 1 Manual gearbox models.
The full engine gasket set includes the conversion and cylinder head gasket sets minus the head gasket
itself, which should be purchased separately according to the engine size.
External Engine Components
2 2K8169 PLUG, core, cylinder block, 1 5/8" dia. 4 1963-80.
AEC876 PLUG, core, cylinder block, 1 3/8" dia. 4 1980 on (A Plus block).
3 2K1345 PLUG, oil pressure release valve passage 2 1963-85.
TAM2009 PLUG, oil pressure release valve passage 2 1985 on.
4 12H1734 PLUG, oil gallery, solid brass 2 1963-85, 998cc.
CAM4133 PLUG, oil gallery, cup type 2 1985 on, 998cc.
12G3503 PLUG, oil gallery 2 1098cc .
5 ADP210 PLUG, oil feed 1 Automatic gearbo x.
6 1B3664 WASHER, sealing 1 Automatic gearbo x.
7 1A1964 RESTRICTOR, cam bearing oil feed 1
8 CAM150 STUD, cylinder head, long 4
9 CAM151 STUD, cylinder head, shor t 5
10 CHS2513 STUD, fuel pump drive aperture 2 1963-69.
CHS2515 STUD, fuel pump drive aperture 2 1969 on.
From 1963-69 the fuel pump drive aperture studs secured a blanking plate, plus the open circuit
breathing vent pipe (if fitted). From 1969 onwards, they secured the mechanical fuel pump. For pump
fixing details, including the gask et (not the same as the blanking plate gasket), please see the ‘Fuel
Pumps - Carburetter’ section in the Fuel and Exhaust Systems area of the Somerford Mini Catalogue.
11 2A265 PLATE, blanking fuel pump drive aperture 1 1963-69.
12 GUG705557GM GASKET, blanking plate 1 1963-69.
13 FNZ105 NUT, blanking plate to block 2 1963-69.
14 LWZ205 WASHER, locking 2 1963-69.
15 PWZ105 WASHER, plain, vent pipe bracket 1 Open circuit breathing (if fitted).
16 53K615 STUD, paper element oil filter head 2 Manual gearbox, 1963-73.
CHS2613 STUD, ‘spin-on’ cartridge oil filter head 2 Manual gearbox, 1973 on.
17 22A1203 PLATE, blanking oil filter face 1 Automatic gearbo x.
18 88G402 GASKET, blanking plate 1 Automatic gearbo x.
19 SH506071 SCREW, blanking plate to block 2 Automatic gearbo x.
20 12G1058 WASHER, sealing 2 Automatic gearbo x.
21 12A1910 SCREW, main bearing cap to block 6
22 2A54 DOWEL,main bearing cap 6
23 6K927 LOCK TAB, main bearing cap screw 6
24 BHM1211 LINER SET, camshaft bearings 1
25 3H576 TAP, cooling system drain 1 Alternative to plug until early 1980s .
26 2K4954B WASHER, fibre, drain tap A/R
This washer not only seals the tap to the block, but also is intended (using whatever quantity is
necessary) to shim the tap so that when tightly screwed to the block the spout faces downwards.
27 53K2853 PLUG, cooling system drain 1 Alternative to tap.
28 6K638B WASHER, sealing plug 1
29 2A612 HOUSING, distributor 1 1963-65; does not require O ring.
30 12A1136 HOUSING, distributor 1 1965 on; requires O ring.
31 13H2792 O RING, housing 1 1965 on.
The later housing may be fitted in place of the earlier item, but only if an O ring is fitted with it.
32 SH604061 SCREW, housing to block 2 1963-80; not A Plus cylinder block.
33 LWZ404 WASHER, shakeproof 2 1963-80; not A Plus cylinder block.
Engine Front Mounting Plate
34 2A970 PLATE, engine front mounting 1 1963-79.
35 12G2626 PLATE, engine front mounting 1 1979 on. Accepts chain tensioner.
36 GUG705554GM GASKET, plate to block 1
37 SH605051 SCREW, plate to block 2
38 LWZ305 WASHER, locking 2
39 53K2016 SCREW, plate to main bearing cap 2
40 6K831 LOCK TAB, screw 1 1963-69.
41 WF600041 WASHER, shakeproof 2 1969 on. Will replace earlier lock tab.
42 AHU2379 PLATE, camshaft locating 1
43 SH604061 SCREW, plate to block 3
44 WF600040 WASHER, shakeproof 3
Timing Cover 1963-79 (without chain tensioner pad)
Several timing covers were fitted in the 1960s; all w ere superseded by 1970 by 12G2506, which does not
require the stiffener 12A666 listed below. The plain washers PWZ104 and PWZ105 listed below replace
the original elongated washers used at different times on the A Series engine until the 1980s.
45 12G2506 COVER, front, timing 1 Includes oil seal.
46 88G561 OIL SEAL, timing cover 1 Included in timing cover.
47 12A666 STIFFENER, timing cover 1 Use on certain early 1960s covers.
48 12A956 GASKET, timing cover 1
49 SH604031 SCREW, cover to front mounting plate 6
50 LWZ204 WASHER, locking 6
51 PWZ104 WASHER, plain 6/3 Qty. reduced when stiffener is present.
52 SH605061 SCREW, cover to mounting plate and block 4
53 LWZ305 WASHER, locking 4
54 PWZ105 WASHER, plain 4/3 Qty. reduced when stiffener is present.
Timing Cover 1979 On (with chain tensioner pad)
55 CAM4641 COVER, front, timing 1 1979-80; includes oil seal.
CAM4904 COVER, front, timing 1 1980 on; includes oil seal. A Plus.
56 88G561 OIL SEAL, timing cover 1 Included in timing cover.
57 GUG705550GM GASKET, timing cover 1
58 SH604031 SCREW, cover to front mounting plate 6
59 LWZ204 WASHER, locking 6
60 PWZ104 WASHER, plain 6
61 SH605061 SCREW, cover to mounting plate and block 5
62 LWZ305 WASHER, locking 5
63 PWZ105 WASHER, plain 5
64 FNZ105 NUT,timing cover to mounting plate 1
Tappet Chest Covers
65 - COVER, tappet chest, LH, with breather pipe 1 Convex; open circuit breathing (1963-66).
66 - COVER, tappet chest, LH, with breather pipe 1 Concave;open circuit breathing (1966-69).
67 12G577 COVER, tappet chest, LH, with oil separator 1 Convex;closed circuit breathing (1964-66).
68 12A1212 COVER, tappet chest, LH, with oil separator 1 Concave;closed circuit breathing (1966 on).
There are too many varieties of open circuit breathing LH tappet chest cover to list here. However they
are all detailed, with the other components of each type of breathing system, in the ‘Emission Controls -
Engine Breathing’ sections in the Fuel and Exhaust Systems area of the Somerford Mini catalogue.
69 12H941 COVER, tappet chest,RH 1 Convex cover, 1963-66.
70 12A1386 COVER, tappet chest,RH 1 Concave cover, 1966 on.
71 12A1139 GASKET, cover, cork 1 For convex type cover.
72 BH605151 BOLT, cover to block 1 For convex type cover.
73 2K4458 WASHER, bolt 1 For convex type cover.
74 GUG705505GM GASKET, cover, rubber 1 For concave type cover.
75 SH605091 SCREW, cover to block 1 For concave type cover.
76 12A1177 WASHER, cup 1 For conca ve type cover; 1963-85.
77 12A1176 BUSH, r ubber 1 For conca ve type cover; 1963-85.
78 MRC1980A BUSH, r ubber 1 For concave type cover; 1985 on.
The MRC1980A bush may be fitted in place of the washer and bush on pre-1985 engines.
Oil System Components
79 2K4994 PLUG, priming 1
80 6K464 WASHER, sealing 1
81 12H865 PLUNGER, oil pressure relief valve 1 Standard fitment.
82 BLS916 BALL, oil pressure relief valve 1 Alternative; see note below.
The ball may be used in place of the plunger to prevent a sticking relief valve (which happens with dirty
oil sometimes). It must,however, be used together with the shorter and stronger AEA536 spring.
83 6K853 SPRING, oil pressure relief valve 1 Not 998cc Cooper.
AEA536 SPRING, oil pressure relief valve 1 998cc Cooper.
84 12A1851 CAP, threaded, relief valve 1
85 6K431 WASHER, sealing 1
86 2A797 HOUSING, oil pressure relief valve 1 Press-fit in cylinder block.
87 12A116 DIPSTICK, oil level 1 1963-66; manual gearbox.
12A1263 DIPSTICK, oil level 1 1966 on; manual gearbox.
88 AEC671 WASHER, sealing dipstick 1 1963-66; manual gearbox.
12A1262 WASHER, sealing dipstick 1 1966 on; manual gearbox.
89 12G107 TUBE, dipstick, nylon 1 1963-66; manual gearbox.
12A1261 TUBE, dipstick, metal 1 1966-80; manual gearbox. Not A Plus
engines (see note below).
Note that ‘hybrid’ engines (with A Plus cylinder block, but not all other A Plus features) produced in the
1979-81 period also did not require a dipstick tube. For the dipstick on Minis with automatic gearboxes,
please see the ‘Automatic Transmission - Torque Converter and Housing’ section in the Transmissions area
of the Somerford Mini catalogue.
Tel. 01249 721421 Fax. 01249 721316 www.somerford-mini.co.uk
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