Internal engine - 998 and 1098cc

Part No: SH605051
  In Stock
SET SCREW- 5/16 UNF x 5/8''
Required Quantity: 4
£0.36 inc VAT
£0.30 ex VAT
Part No: PWZ105
  In Stock
WASHER - PLAIN - 5/16"
Required Quantity: 2
£0.20 inc VAT
£0.17 ex VAT
Part No: SH605061
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SET SCREW-5/16'' UNF x 3/4''
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Part No: LWZ305
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CRANKSHAFT-BARE-998cc
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Part No: 12A1997
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Part No: 12A398
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Part No: 12A593020
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Part No: 12A593STD
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Part No: 12A673020
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Part No: 12A673STD
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Part No: 12G123
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Part No: 12G125
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BUSH-SMALL END-998 & 1098cc
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2 points earn (£0.02)
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Part No: 12G2628
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CRANKSHAFT-BARE 1098cc
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Part No: 20950STD
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£168.00 inc VAT
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Part No: 2A13
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CAM FOLLOWER (NO OIL HOLE)
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CAM FOLLOWER +010'' OVERSIZE
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PIN-OIL PUMP DRIVE
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Part No: 2A660
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LOCK TAB-BIG END CAP-NOT 1275
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LOCKTAB-CAMSHAFT SPROCKET
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Part No: 3H2127
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Part No: 6K628
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Part No: 8G2198STD
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138 points earn (£1.38)
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Part No: ADU3920STD
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THRUST WASHER SET CRANK 997,998,1098,+.003''
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  In Stock
THRUST WASHER SET CRANK 997,998,1098 +.030''
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9 points earn (£0.09)
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Part No: CAM6323
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38 points earn (£0.38)
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76 points earn (£0.76)
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Part No: R39400STD
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90 points earn (£0.90)
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Part No: TAM2019
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BOLT-CRANKSHAFT PULLEY-'87 ON
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2 points earn (£0.02)
£3.30 inc VAT
£2.75 ex VAT
Part No: TAM2020
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LOCKTAB- BOTTOM PULLEY- A+
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£1.32 inc VAT
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Part No: TAM2052020
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126 points earn (£1.26)
£151.20 inc VAT
£126.00 ex VAT
Part No: TAM2052030
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126 points earn (£1.26)
£151.20 inc VAT
£126.00 ex VAT
Part No: TAM2052040
  In Stock
126 points earn (£1.26)
£151.20 inc VAT
£126.00 ex VAT
Part No: TAM2052060
  In Stock
126 points earn (£1.26)
£151.20 inc VAT
£126.00 ex VAT
Part No: TAM2052STD
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126 points earn (£1.26)
£151.20 inc VAT
£126.00 ex VAT
Part No: TAM2054020
  Available to Customer Order
205 points earn (£2.05)
£246.53 inc VAT
£205.44 ex VAT
Part No: TAM2054030
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205 points earn (£2.05)
£246.53 inc VAT
£205.44 ex VAT
Part No: TAM2054040
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205 points earn (£2.05)
£246.53 inc VAT
£205.44 ex VAT
Part No: TAM2054060
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205 points earn (£2.05)
£246.53 inc VAT
£205.44 ex VAT
Part No: TAM2054STD
  Available to Customer Order
205 points earn (£2.05)
£246.53 inc VAT
£205.44 ex VAT
Part No: WKN505
  In Stock
1 points earn (£0.01)
£1.54 inc VAT
£1.28 ex VAT
Part No: 3H2127HD
  In Stock
 
16 points earn (£0.16)
£19.72 inc VAT
£16.43 ex VAT
Pistons, Piston Rings and Cylinder Liners     
Note before ordering a piston set or ring set from Somerford Mini: a set of pistons consists of four pistons complete with rings and gudgeon pins; a set of rings consists of sufficient rings for four pistons.  Cylinder liners are supplied individually.  Various piston upgrades (superior design and manufacture, different  capacities and compression ratios) are also available from Somerford Mini, but are only listed in this catalogue in instances where they make a good, complication-free replacement for original specification pistons which are in short supply.
         
998cc 1963-80 (not Cooper)      
4 Ring Piston With 0.125" Thick Double Bevelled Oil Ring    
Ill. No. Part No. Description Qty. Rqd. Remarks
1 12A673STD PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, standard size.
  12A673020 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.020" oversize.
  12A673030 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.030" oversize.
  12A673040 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.040" oversize.
  12A673060 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.060" oversize.
2 BHM1162STD RING SET, 4 piston set 1 Standard size.
  BHM1162020 RING SET, 4 piston set 1 +0.020" oversize.
  BHM1162030 RING SET, 4 piston set 1 +0.030" oversize.
  BHM1162040 RING SET, 4 piston set 1 +0.040" oversize.
  BHM1162060 RING SET, 4 piston set 1 +0.060" oversize.
         
998cc 1980-84 (A Plus)      
4 Ring Piston With 0.158" Thick Special Oil Ring    
Ill. No. Part No. Description Qty. Rqd. Remarks
3 ADU3920STD PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, standard size.
  ADU3920020 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.020" oversize.
  ADU3920030 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.030" oversize.
  ADU3920040 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.040" oversize.
  ADU3920060 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.060" oversize.
  ADU3922STD PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, standard size.
  ADU3922020 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.020" oversize.
  ADU3922030 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.030" oversize.
  ADU3922040 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.040" oversize.
  ADU3922060 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.060" oversize.
4 BHM1281STD RING SET, 4 piston set 1 Standard size.
  BHM1281020 RING SET, 4 piston set 1 +0.020" oversize.
  BHM1281030 RING SET, 4 piston set 1 +0.030" oversize.
  BHM1281040 RING SET, 4 piston set 1 +0.040" oversize.
  BHM1281060 RING SET, 4 piston set 1 +0.060" oversize.
         
998cc 1984-88 (A Plus)      
3 Ring Piston With Gudgeon Pin Retained By Circlips    
Ill. No. Part No. Description Qty. Rqd. Remarks
5 ADU3490STD PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, standard size.
  ADU3490020 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.020" oversize.
  ADU3490030 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.030" oversize.
  ADU3490040 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.040" oversize.
  ADU3490060 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.060" oversize.
  ADU4203STD PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, standard size.
  ADU4203020 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.020" oversize.
  ADU4203030 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.030" oversize.
  ADU4203040 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.040" oversize.
  ADU4203060 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.060" oversize.
6 BHM1415STD RING SET, 4 piston set 1 Standard size.
  BHM1415020 RING SET, 4 piston set 1 +0.020" oversize.
  BHM1415030 RING SET, 4 piston set 1 +0.030" oversize.
  BHM1415040 RING SET, 4 piston set 1 +0.040" oversize.
  BHM1415060 RING SET, 4 piston set 1 +0.060" oversize.
         
998cc 1988 On (A Plus)      
3 Ring Piston With Press Fit Gudgeon Pin    
Ill. No. Part No. Description Qty. Rqd. Remarks
7 TAM2052STD PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, standard size.
  TAM2052020 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.020" oversize.
  TAM2052030 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.030" oversize.
  TAM2052040 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.040" oversize.
  TAM2052060 PISTON SET, set of 4, flat piston crown 1 10.3:1 compression ratio, +0.060" oversize.
  TAM2054STD PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, standard size.
  TAM2054020 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.020" oversize.
  TAM2054030 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.030" oversize.
  TAM2054040 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.040" oversize.
  TAM2054060 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.060" oversize.
8 BHM1629STD RING SET, 4 piston set 1 Standard size.
  BHM1629020 RING SET, 4 piston set 1 +0.020" oversize.
  BHM1629030 RING SET, 4 piston set 1 +0.030" oversize.
  BHM1629040 RING SET, 4 piston set 1 +0.040" oversize.
  BHM1629060 RING SET, 4 piston set 1 +0.060" oversize.
         
998cc 1963-69 (Cooper)      
4 Ring Piston      
Note that the 9:1 compression ratio Cooper pistons have been out of production for many years and supply of this type is therefore almost non-existant. The Powermax pistons listed further down the page are most often supplied as replacements.
Ill. No. Part No. Description Qty. Rqd. Remarks
9 12A674STD PISTON SET, set of 4, raised 'D' piston crown 1 9:1 compression ratio, standard size.
  12A674020 PISTON SET, set of 4, raised 'D' piston crown 1 9:1 compression ratio, +0.020" oversize.
  12A674030 PISTON SET, set of 4, raised 'D' piston crown 1 9:1 compression ratio, +0.030" oversize.
  12A674040 PISTON SET, set of 4, raised 'D' piston crown 1 9:1 compression ratio, +0.040" oversize.
  12A674060 PISTON SET, set of 4, raised 'D' piston crown 1 9:1 compression ratio, +0.060" oversize.
  12A593STD PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, standard size.
  12A593020 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.020" oversize.
  12A593030 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.030" oversize.
  12A593040 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.040" oversize.
  12A593060 PISTON SET, set of 4, dished piston crown 1 8.3:1 compression ratio, +0.060" oversize.
10 BHM1162STD RING SET, 4 piston set 1 Standard size.
  BHM1162020 RING SET, 4 piston set 1 +0.020" oversize.
  BHM1162030 RING SET, 4 piston set 1 +0.030" oversize.
  BHM1162040 RING SET, 4 piston set 1 +0.040" oversize.
  BHM1162060 RING SET, 4 piston set 1 +0.060" oversize.
         
998cc 1963-69 (Cooper)      
3 Ring Powermax Piston      
Ill. No. Part No. Description Qty. Rqd. Remarks
11 20950STD PISTON SET, set of 4, flat piston crown 1 9.7:1 compression ratio, standard size.
  20950020 PISTON SET, set of 4, flat piston crown 1 9.7:1 compression ratio, +0.020" oversize.
  20950040 PISTON SET, set of 4, flat piston crown 1 9.7:1 compression ratio, +0.040" oversize.
  20950060 PISTON SET, set of 4, flat piston crown 1 9.7:1 compression ratio, +0.060" oversize.
12 R39400STD RING SET, 4 piston set 1 Standard size.
  R39400020 RING SET, 4 piston set 1 +0.020" oversize.
  R39400040 RING SET, 4 piston set 1 +0.040" oversize.
  R39400060 RING SET, 4 piston set 1 +0.060" oversize.
         
1098cc 1975-80       
4 Ring Piston With 0.125" Thick Double Bevelled Oil Ring    
Ill. No. Part No. Description Qty. Rqd. Remarks
13 12G758STD PISTON SET, set of 4, dished piston crown 1 8.5:1 compression ratio, standard size.
  12G758020 PISTON SET, set of 4, dished piston crown 1 8.5:1 compression ratio, +0.020" oversize.
  12G758030 PISTON SET, set of 4, dished piston crown 1 8.5:1 compression ratio, +0.030" oversize.
  12G758040 PISTON SET, set of 4, dished piston crown 1 8.5:1 compression ratio, +0.040" oversize.
  12G758060 PISTON SET, set of 4, dished piston crown 1 8.5:1 compression ratio, +0.060" oversize.
14 BHM1162STD RING SET, 4 piston set 1 Standard size.
  BHM1162020 RING SET, 4 piston set 1 +0.020" oversize.
  BHM1162030 RING SET, 4 piston set 1 +0.030" oversize.
  BHM1162040 RING SET, 4 piston set 1 +0.040" oversize.
  BHM1162060 RING SET, 4 piston set 1 +0.060" oversize.
         
1098cc 1980-81 (A Plus)       
4 Ring Piston With 0.158" Thick Special Oil Ring    
Ill. No. Part No. Description Qty. Rqd. Remarks
15 BAU4418STD PISTON SET, set of 4, dished piston crown 1 8.5:1 compression ratio, standard size.
  BAU4418020 PISTON SET, set of 4, dished piston crown 1 8.5:1 compression ratio, +0.020" oversize.
  BAU4418030 PISTON SET, set of 4, dished piston crown 1 8.5:1 compression ratio, +0.030" oversize.
  BAU4418040 PISTON SET, set of 4, dished piston crown 1 8.5:1 compression ratio, +0.040" oversize.
  BAU4418060 PISTON SET, set of 4, dished piston crown 1 8.5:1 compression ratio, +0.060" oversize.
16 BHM1465STD RING SET, 4 piston set 1 Standard size.
  BHM1465020 RING SET, 4 piston set 1 +0.020" oversize.
  BHM1465030 RING SET, 4 piston set 1 +0.030" oversize.
  BHM1465040 RING SET, 4 piston set 1 +0.040" oversize.
  BHM1465060 RING SET, 4 piston set 1 +0.060" oversize.
17 CCN210 CIRCLIP, gudgeon pin 8 Not 998cc 1988 on.
18 12G164 LINER, cylinder 4 Standard size.
         
Connecting Rods and Crankshaft    
Connecting Rods 1963-88      
(Gudgeon Pin Retained By Circlips)    
In 1981 the connecting rod big end cap screw was changed to an improved stretch bolt design which no longer required a lock tab to ensure it was secured in place.  New connecting rod assemblies are most likely to include stretch bolts, although 'new old stock' rods with bolts and lock tabs that have been gathering dust in a corner of a store for many years may still surface from time to time.  When reassembling an engine, make sure all big end caps are secured by the same bolt design.
Ill. No. Part No. Description Qty. Rqd. Remarks
19 12G123 ROD ASS'Y, connecting, nos 2 and 4 2  
20 12G126 ROD ASS'Y, connecting, nos 1 and 3 2  
21 12G125 BUSH, small end 4 Included in rod assembly. 
22 12G2217 BOLT, connecting rod cap ('big end') 8 1963-81; see note above. 
23 2A660 LOCK TAB, bolt 4 1963-81; see note above. 
24 CAM6126 BOLT, connecting rod cap ('big end') 8 1981-88; see note above.
         
Connecting Rods 1988 On      
(Press Fit Gudgeon Pin)      
Ill. No. Part No. Description Qty. Rqd. Remarks
25 12A1997 ROD ASS'Y, connecting, nos 2 and 4 2  
26 12A1999 ROD ASS'Y, connecting, nos 1 and 3 2  
27 12G125 BUSH, small end  4 Included in rod assembly.  
28 CAM6126 BOLT, connecting rod cap ('big end') 8  
29 8G2198STD BEARING SET, connecting rod ('big end bearings') 1 Set of 4 pairs, standard size. 
  8G2198010 BEARING SET, connecting rod ('big end bearings') 1 Set of 4 pairs, 0.010" undersize.
  8G2198020 BEARING SET, connecting rod ('big end bearings') 1 Set of 4 pairs, 0.020" undersize.
  8G2198030 BEARING SET, connecting rod ('big end bearings') 1 Set of 4 pairs, 0.030" undersize.
  8G2198040 BEARING SET, connecting rod ('big end bearings') 1 Set of 4 pairs, 0.040" undersize.
         
Crankshaft      
Crankshafts shown here are either assemblies (including main bearings, connecting rod bearings and thrust washers),  or bare (without bearings or thrust washers).  However, please note that new crankshafts may be supplied complete with bearings but other times not, depending on what is available at the time.  Additionally Somerford Mini can offer a crankshaft regrinding service, usually carried out on your old unit.  You should enquire on the current status of supply before ordering a crankshaft from Somerford Mini.  
         
For details of the primary gear and its bushes located on the tail of the crankshaft, please see the 'Manual Gearbox - Primary, Idler and Drive Gears' section or the 'Automatic Transmission - Torque Converter and Housing'  section in the Transmissions area of the Somerford Mini catalogue.  
Ill. No. Part No. Description Qty. Rqd. Remarks
30 8G2733 CRANKSHAFT ASS'Y (with 1963-83 main bearings) 1 998cc 1963-83.  Stamped no. 12A595 or 12A1451.
  BHM1436 CRANKSHAFT ASS'Y (with 1983 on main bearings) 1 998cc 1983 on.  Stamped no. 12A1451.
  8G2732 CRANKSHAFT ASS'Y (with 1963-83 main bearings) 1 1098cc.  Stamped no. 12G82.
31 12A1451 CRANKSHAFT, bare 1 998cc.  Stamped 12A1451.
  12G82 CRANKSHAFT, bare 1 1098cc.  Stamped no. 12G82.
         
There are two distinct main bearing designs: 8G2332 bearings have locating lugs on the edge of both upper and lower halves, whereas BHM1573 bearings have lugs on the edge of the upper halves and in the centre of the lower halves.  They cannot be interchanged in engines because the engine main bearing caps are unique for each design.
Ill. No. Part No. Description Qty. Rqd. Remarks
32 8G2332STD BEARING SET, main bearings, set of 3 pairs 1 998cc 1963-83 and 1098cc; std. size.
  8G2332010 BEARING SET, main bearings, set of 3 pairs 1 998cc 1963-83 and 1098cc; 0.010" undersize.
  8G2332020 BEARING SET, main bearings, set of 3 pairs 1 998cc 1963-83 and 1098cc; 0.020" undersize.
  8G2332030 BEARING SET, main bearings, set of 3 pairs 1 998cc 1963-83 and 1098cc; 0.030" undersize.
  8G2332040 BEARING SET, main bearings, set of 3 pairs 1 998cc 1963-83 and 1098cc; 0.040" undersize.
  BHM1573STD BEARING SET, main bearings, set of 3 pairs 1 998cc 1983 on; std. size.
  BHM1573010 BEARING SET, main bearings, set of 3 pairs 1 998cc 1983 on; 0.010" undersize.
  BHM1573020 BEARING SET, main bearings, set of 3 pairs 1 998cc 1983 on; 0.020" undersize.
  BHM1573030 BEARING SET, main bearings, set of 3 pairs 1 998cc 1983 on; 0.030" undersize.
  BHM1573040 BEARING SET, main bearings, set of 3 pairs 1 998cc 1983 on; 0.040" undersize.
         
Thrust washers are supplied as a pair; i.e. one upper and one lower thrust washer.  Two pairs are required per engine, fitted selectively to obtain the correct amount of end float on the crankshaft.
Ill. No. Part No. Description Qty. Rqd. Remarks
33 BHM1292STD THRUST WASHERS, crankshaft, pair A/R Standard size.
  BHM1292003 THRUST WASHERS, crankshaft, pair A/R +0.003" oversize.
  BHM1292030 THRUST WASHERS, crankshaft, pair A/R +0.030" oversize.
34 6K836 KEY, Woodruff, crankshaft 1  
35 8G725 GEAR, timing chain, crankshaft 1 998cc (not Cooper) and 1098cc.
  AEA538 GEAR, timing chain, crankshaft 1 998cc (Cooper).
36 6K628 WASHER, packing A/R  
37 12A1148 OIL THROWER, crankshaft 1  
38 88G561 OIL SEAL, timing cover 1 Included in timing cover assembly.
         
Crankshaft Pulley      
The 998cc (not Cooper) engine was not fitted with a vibration damper type pulley, whereas the 1098cc engine used a one-piece damper pulley.  The 998cc Cooper unit also received one, or in fact two different ones.  The original design was a separate pulley with a with a damper screwed to it; eventually a one-piece damper pulley was offered as a replacement but in fact both set ups remained available as spares for many years.  If you want the original pulley, it is still available today from Somerford Mini.  
         
Note that the bolt retaining the pulley to the crankshaft is specific to the type of pulley being fitted.  Later 998cc and 1098cc engines from 1980 approximately onwards received pulleys with strobe timing plates attached as part of the A Plus modification programme.   
         
998cc (not Cooper) Crankshaft Pulley    
Ill. No. Part No. Description Qty. Rqd. Remarks
39 2A940 PULLEY, crankshaft 1 1963-70, dynamo fitted models.
  12A1380 PULLEY, crankshaft 1 1963-70, alternator fitted models.
  CAM6323 PULLEY, crankshaft 1 1970-80; may be used on earlier engines.
  CAM6497 PULLEY, crankshaft 1 1980 on; A Plus type with timing plate.
40 AEA312 BOLT, pulley to crankshaft 1 1963-87.
  TAM2019 BOLT, pulley to crankshaft 1 1987 on.
41 12A398 LOCK TAB, pulley bolt 1 1963-87.
  TAM2020 LOCK TAB, pulley bolt 1 1987 on.
         
998cc (Cooper) Crankshaft Pulley    
Ill. No. Part No. Description Qty. Rqd. Remarks
42 AEG454 PULLEY, crankshaft 1 Separate pulley and damper fitment. 
43 12A367 DAMPER 1 Separate pulley and damper fitment. 
44 SH605051 SCREW, damper to pulley 4 Separate pulley and damper fitment. 
45 LWZ305 WASHER, locking 4 Separate pulley and damper fitment. 
46 AEA312 BOLT, pulley to crankshaft 1 Separate pulley and damper fitment. 
47 12A398 LOCK TAB, pulley bolt 1 Separate pulley and damper fitment. 
48 88G305 PULLEY, crankshaft, with damper 1 One-piece damper pulley fitment.
49 12A283 BOLT, pulley to crankshaft 1 One-piece damper pulley fitment.
50 12A398 LOCK TAB, pulley bolt 1 One-piece damper pulley fitment.
         
1098cc Crankshaft Pulley      
Ill. No. Part No. Description Qty. Rqd. Remarks
51 88G305 PULLEY, crankshaft, with damper 1 1975-76.
  CAM4929 PULLEY, crankshaft, with damper 1 1976-80; can be used to replace 88G305.
  AHU1878 PULLEY, crankshaft, with damper 1 1980 on; A Plus type with timing plate.
52 12A283 BOLT, pulley to crankshaft 1  
53 12A398 LOCK TAB, pulley bolt 1  
         
Camshaft and Tappets    
A range of uprated camshafts and other engine tuning components are also available from Somerford Mini, but are not listed here.  Please contact us for details.
         
998cc (not Cooper) Camshaft    
Ill. No. Part No. Description Qty. Rqd. Remarks
54 8G712 CAMSHAFT, for 'pin drive' oil pump 1 1963-80, manual gearbox.
  12A1065 CAMSHAFT, for 'star drive' oil pump 1 1967-80, automatic gearbox.
  CAM6267 CAMSHAFT, for 'slot drive' oil pump 1 1980 on, A Plus type.  For 8.3:1 compression ratio.
  CAM4717 CAMSHAFT, for 'slot drive' oil pump 1 1980 on, A Plus type.  For 10.3:1 compression ratio.
         
998cc (Cooper) Camshaft      
Ill. No. Part No. Description Qty. Rqd. Remarks
  AEA630 CAMSHAFT, for 'pin drive' oil pump 1 Alternative to 12G165.
  12G165 CAMSHAFT, for 'pin drive' oil pump 1 Alternative to AEA630.
         
1098cc Camshaft      
Ill. No. Part No. Description Qty. Rqd. Remarks
  AEA630 CAMSHAFT, for 'pin drive' oil pump 1 1975-80, alternative to 12G165.
  12G165 CAMSHAFT, for 'pin drive' oil pump 1 1975-80, alternative to AEA630.
  12G2983 CAMSHAFT, for 'slot drive' oil pump 1 1980 on, A Plus type. 
55 2A299 PIN, oil pump drive 1 Included in 'pin drive' type camshafts.
56 CHM108 FLANGE, for 'star drive' oil pump (flange also known as 'spider') 1 Use with 'star drive' type camshaft.
57 12G4499 SPINDLE, distributor drive, centred slot 1 1963-80.
  12G3560 SPINDLE, distributor drive, offset slot 1 1980 on, A Plus type.
58 2A13 TAPPET (also known as cam follower) 8 Standard size.
  2A13010 TAPPET (also known as cam follower) 8 +0.010" oversize.
59 2A14 PUSH ROD 8 Alternative to 12A250 when replaced in sets.
  12A250 PUSH ROD 8 Alternative to 2A14 when replaced in sets.
         
Timing Chain      
Ill. No. Part No. Description Qty. Rqd. Remarks
60 3H2127 CHAIN, timing 1  
61 2A85 GEAR, timing chain, camshaft, with ring tensioners 1 1963-74, may be replaced by 12G4337 without ring tensioners.
62 2A86 GEAR, timing chain, camshaft, ring tensioner type 1 1963-74, may be replaced by 12G4337 without ring tensioners.
63 12G4337 GEAR, timing chain, camshaft 1 1974-79, use without ring tensioners. 1979 on, use with tensioner pad.
64 8G549 RING, timing chain tensioner, rubber 2 1963-74.
65 12G2621 PAD, timing chain tensioner 1 1979 on.
66 12G2629 PIN, tensioner pivot 1 1979 on.
67 12G2628 PLATE, tensioner mounting 1 1979 on.
68 SH605061 SCREW, plate to cylinder block 2 1979 on.
69 LWZ305 WASHER, locking 2 1979 on.
70 PWZ105 WASHER, plain 2 1979 on.
71 WKN505 KEY, Woodruff 1  
72 6K629 NUT, gear to camshaft 1  
73 2A759 LOCK TAB, nut 1  
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