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Home>Make: Norton>1975 Norton Commando 850 Mk3>Engine, Primary Drive & Clutch>Crankshaft, Conrods, Pistons, Cam, Timing Gear

1975 Norton Commando 850 Mk3 Crankshaft, Conrods, Pistons, Cam, Timing Gear
1975 Norton Commando 850 Mk3 Engine: Crankshaft, Connecting Rods, Pistons, Camshaft, Timing Gear
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Plate # Part Name Part # Qty Fitted Description
1 Connecting Rod 064896 2 Billet type - even stronger.
2 Connecting Rod Big End Bolt 066486 4 3/8", forged, and uses rolled threads.
3 Connecting Rod Self Locking Nut 067827 4 3/8" CEI.
4 Big End Shell Set, Standard 064285 1 Standard - 1.75". Set of 4.
4 Big End Shell Set, 010 064286 1 Oversize +0.010 - 1.74". Set of 4.
4 Big End Shell Set, 020 064287 1 Oversize +0.020 - 1.73". Set of 4.
4 Big End Shell Set, 030 064288 1 Oversize +0.030 - 1.72". Set of 4.
4 Big End Shell Set, 040 064289 1 Oversize +0.040 - 1.71". Set of 4.
5 Crankshaft, Assembled 065660 1 Not available.
6 Crankshaft Dowel Stud 065671 1
7 Crankshaft Stud 066609 4 Part of crankshaft studs and nuts kit - not sold separately.
8 Crankshaft Stud Nut 065673 14 Part of crankshaft studs and nuts kit - not sold separately.
9 Fitted Stud 066607 2 Part of crankshaft studs and nuts kit - not sold separately.
10 Fitted Stud Washer 602322 2 3/8" plain, thin.
6-10 Crankshaft Studs & Nuts Kit 067095 1 Stronger than bolts.
11 Crankshaft Oilway Screw 067600 1
12 Crankshaft Timing Pinion 065670 1 Half time pinion.
13 Crankshaft Timing Pinion Key 065675 1
14 Timing Pinion Back Plate 067525 1 Triangular, at rear of timing pinion.
15 Oil Pump Drive 067889 1 6 start.
16 Camshaft, Standard 062608 1
17 Camshaft Thrust Washer 061086 1 Steel chamfered.
18 Intermediate Gear 065667 1 Complete with bush.
19 Intermediate Gear Bush 065669 1
20 Intermediate Gear Shaft 061078 1
21 Intermediate Gear Shaft Circlip 067690 1 At rear.
22 Camshaft Sprocket 061080 1
23 Camshaft Sprocket Key 000572 1
24 Camshaft Sprocket Nut 067774 1
25 Camshaft Drive Chain 067689 1 38 links.
26 Cam Chain Tensioner Slipper 064647 1
27 Cam Chain Tensioner Backing Plate 067575 2
28 Cam Chain Tensioner Stud 062665 2 5/16 UNF.
29 CamChain Tensioner Washer 067700 2 5/16" serrated.
30 Cam Chain Tensioner Stud Nut 062692 2 5/16" UNF, small hexagon.
31 Timing Side Bearing Washer 067526 1 Fits behind 067525 back plate.
32 Piston Set, Standard 063838 1 Includes circlip, piston rings and gudgeon pin, 8.5:1.
32 Piston Set, +20 Oversize (Hepolite) 064041 1 Includes rings, gudgeon pins and circlips.
32 Piston Set, +40 Oversize (Hepolite) 064042 1 Includes rings, gudgeon pins and circlips.
32 Piston Set, +60 Oversize 064043 1 Includes circlip, piston rings and gudgeon pin, 8.5:1.
33 Piston Ring Set, Standard (Hepolite) 067958 1 For both pistons, 77mm.
33 Piston Ring Set, +20 067960 1 For both pistons, 77mm.
33 Piston Ring Set, +60 (Hepolite) 067962 1 For both pistons, 77mm.
34 Piston Gudgeon Pin 063842 2 Wrist pin.
35 PIston Wrist Pin Circlip 067834 4
- Bottom End Rebuild Kit 084005 1 Includes main bearings, big end bolts, shells, chain, seals, gaskets, etc.