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1971 Norton Commando Cylinder, Cylinder Head & Fittings
1971 Norton Commando Cylinder, Cylinder Head & Fittings - Classic Bike Spares
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Plate #Part NamePart #Qty FittedDescription
1Cylinder Base Gasket0678691
2Cylinder Barrel0617051850 style, through bolt type, complete with fitting kit.
3Cylinder Head Gasket0638441Flame ring, eyeletted.
3Cylinder Head Gasket0640711
4Cylinder Head, RH1060988130mm ports, 9:1 compression. Not available.
5Exhaust Valve Guide, Standard0635272Standard size (.501).
5Exhaust Valve Guide, +0.00506352820.005 oversize.
5Exhaust Valve Guide, +0.01006352920.010 oversize.
5Exhaust Valve Guide, +0.01506353020.015 oversize.
5AInlet Valve Guide, Standard0627252To fit seal, standard size.
5AInlet Valve Guide, +0.0050627672To fit seal, 0.005 oversize.
5AInlet Valve Guide, +0.0100627682To fit seal, 0.010 oversize.
5AInlet Valve Guide, +0.0150627692To fit seal, 0.015 oversize.
6Inlet Valve, Standard0640342
7Exhaust Valve, Standard0651152
-Valves & Guides Set064034K1Includes 2 inlet and exhaust valves, valve guides and seals.
8Valve Spring Seat0675454
9Valve Spring Heat Insulating Washer0678454Under cup, 1.5 mm thick.
9AInlet Valve Guide Oil Seal0627262 5/16" stem valve.
10/11Valve Spring Set0670701Includes 4 inner and outer valve springs..
12Valve Spring Collar, Top0675064
13Valve Collets0675074
14Inlet Pushrod0679402Long, approx 8.15" long.
15Exhaust Pushrod0679412Short, approx 7.3" long.
16/17Cam Followers0678202Matched pair.
18Cam Follower Locating Plate0630922Short.
19Cam Follower Locating Plate Screw0675604
20Rocker, LH Inlet0624731Left hand, without adjuster and nut.
21Rocker, RH Inlet0624711Right hand, without adjuster and nut.
22Rocker, LH Exhaust0624741Left hand, without adjuster and nut.
23Rocker, RH Exhaust0624721Right hand, without adjuster and nut.
24Rocker Adjuster067546AK4Socket type, use 1/8" Allen key.
25Rocker Adjuster Nut0675084
26Rocker Ball EndNMT20634Not available separately.
27Rocker Spindle0679244Plain type, high pressure system.
28Rocker Thrust Washer0676974Fits outside rocker.
29Rocker Spindle Spring Washer0676984Fits inside rocker, Thackery.
30Rocker Spindle Plate Gasket0675804Outer.
31Rocker Spindle Plate Gasket0675504Inner.
32Rocker Spindle Lock Plate0675784Inner, with tabs, thicker and stronger.
33Rocker Spindle Retaining Plate0675794Outer, plain.
34Rocker Spindle Retaining Bolt06312481/4" UNC x 5/8" long.
-Rockers and Shafts Kit0624714K1Includes adjuster ball ends and shims.
35Exhaust Rocker Cover Stud0675824Front, alloy heads only.
36Rear Rocker Cover Stud0676931Alloy heads only.
37Inlet Rocker Cover Dowel0005791
38Exhaust Rocker Inspection Cover0676942Oval.
39Exhaust Rocker Cover Gasket0675542Oval.
40Exhaust Rocker Cover Nut Set0675521Set of 4, front.
41Inlet Rocker Inspection Cover0676951Rectangular.
42Inlet Rocker Cover Gasket0675511Rectangular.
43Rear Rocker Cover Nut Seal Washer0675491
44Inlet Rocker Cover Nut0675621
-Rocker Cover Set067694/51Includes 2 exhaust covers and 1 inlet cover.
45Cylinder Barrel to Head Stud06756125/16" CEI.
46Cylinder Head to Barrel Stud06788533/8" BSF and 3/8" CEI.
47Cylinder Head Barrel Stud Nut0631922Under exhaust, reduced hex for access.
48Cylinder Head Barrel Stud Nut06752925/16" CEI, to fit 067561 stud.
49Cylinder Head to Barrel Nut06787013/8" CEI.
50Cylinder Head Nut Washer60232125/16" plain.
51Outer Head Bolt06040143/8", by spark plug.
52Centre Head Bolt06791813/8" CEI. The short one in the middle.
53Cylinder Head Bolt Washer0162135Thick, 3/8", large diameter.