Cylinder Head Table of illustrations
2 Valve guide installation
3 Valve installation height
4 valve seat width in cylinder head
5 Valve seat angle in the cylinder head
7 Valve seat angle at the valve
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Cylinder Head (continued)
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Engine |
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14 NV, 14 SE, C 14 SE, C 14 NZ, X 14 NZ, 16 NZR, C 16 SE, C 16 NZ, X 16 SZ, X 16 SZR |
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Cylinder head height 1) |
mm |
95.90 - 96.10 |
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Valve seat width in cylinder head |
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Intake valve |
mm |
1.3 - 1.5 |
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Exhaust valve |
mm |
1.6 - 1.8 |
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Valve seat angle in the cylinder head |
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90 ° |
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Inner diameter of valve guide |
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Standard size |
mm |
7.030 - 7.050 |
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Oversize (0.075) |
mm |
7.105 - 7.125 |
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Oversize (0.150) |
mm |
7.180 - 7.200 |
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Oversize (0.250) |
mm |
7.280 - 7.300 |
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Length of the valve guide |
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intake valve: |
mm |
45.5 |
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exhaust valve: |
mm |
45.5 |
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installation height of the valve guide |
mm |
80.85 - 81.25 |
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Installation height of valves |
mm |
13.75 - 14.35 |
1) Facing the cylinder head is not permitted.
Cylinder Head (continued)
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Engine |
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16 LZ2, C 18 NZ, C 20 NE |
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cylinder head height 1) |
mm |
95.75 - 96.25 |
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Valve seat width in cylinder head |
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intake valve: |
mm |
1.0 - 1.5 |
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exhaust valve: |
mm |
1.7 - 2.2 |
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Valve seat angle in the cylinder head |
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90 ° |
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valve guide inside diameter |
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standard size |
mm |
7.030 - 7.050 |
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Oversize (0.075) |
mm |
7.105 - 7.125 |
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Oversize (0.150) |
mm |
7.180 - 7.200 |
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Oversize (0.250) |
mm |
7.280 - 7.300 |
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Length of the valve guide |
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intake valve: |
mm |
45.5 |
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exhaust valve: |
mm |
45.5 |
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installation height of the valve guide |
mm |
83.25 - 84.05 |
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Installation height of valves |
mm |
17.85 - 18.25 |
1) Facing the cylinder head is not permitted..
Cylinder Head (continued)
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Engine |
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14 NV, 14 SE, C 14 SE, C 14 NZ, X 14 NZ |
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Valve length |
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Standard size |
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Inlet valve (GM) |
mm |
104.65 - 105.35 |
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Exhaust valve (GM) |
mm |
104.65 - 105.35 |
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Oversize (0.075) |
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Inlet valve (GM K1) |
mm |
104.25 - 104.95 |
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Inlet valve (GM K1) |
mm |
104.25 - 104.95 |
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Oversize (0.150) |
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Inlet valve (GM K2) |
mm |
104.25 - 104.95 |
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Exhaust valve (GM K2) |
mm |
104.25 - 104.95 |
Cylinder Head (continued)
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Engine |
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16 NZR, C 16 NZ, C 16 SE, X 16 SZ, X 16 SZR |
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Valve length |
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Standard size |
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Inlet valve (GM) |
mm |
99.35 - 99.65 |
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Exhaust valve (GM) |
mm |
99.35 - 99.65 |
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Oversize (0.075) |
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Inlet valve (GM K1) |
mm |
98.95 - 99.25 |
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Exhaust valve (GM K1) |
mm |
98.95 - 99.25 |
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Oversize (0.150) |
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Inlet valve (GM K2) |
mm |
98.95 - 99.25 |
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Exhaust valve (GM K2) |
mm |
98.95 - 99.25 |
Cylinder Head (continued)
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Engine |
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16 LZ2, X 18 NZ, C 20 NE |
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Valve length |
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Standard size |
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Inlet valve (GM) |
mm |
104.00 - 104.40 |
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Exhaust valve (GM) |
mm |
103.75 - 104.25 |
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Oversize (0.075) |
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Inlet valve (GM K1) |
mm |
103.60 - 104.00 |
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Exhaust valve (GM K1) |
mm |
103.35 - 103.85 |
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Oversize (0.150) |
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Inlet valve (GM K2) |
mm |
103.60 - 104.00 |
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Exhaust valve (GM K2) |
mm |
103.35 - 103.85 |
Cylinder Head (continued)
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Engine |
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14 NV, C 14 NZ, X 14 NZ, 14 SE, C 14 SE, 16 NZR, C 16 NZ, C 16 SE, X 16 SZ, X 16 SZR, 16 LZ2, C 18 NZ, C 20 NE |
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Valve stem |
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standard size |
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Inlet valve (GM) |
mm |
6.998 - 7.012 |
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Exhaust valve (GM) |
mm |
6.978 - 6.992 |
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Oversize (0.075) |
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Inlet valve (GM K1) |
mm |
7.073 - 7.087 |
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Exhaust valve (GM K1) |
mm |
7.053 - 7.067 |
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Oversize (0.150) |
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Inlet valve (GM K2) |
mm |
7.148 - 7.162 |
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Exhaust valve (GM K2) |
mm |
7.128 - 7.142 |
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Oversize (0.250) |
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Inlet valve (GM A) |
mm |
7.248 - 7.262 |
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Exhaust valve (GM A) |
mm |
7.228 - 7.242 |
Cylinder Head (continued)
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Engine |
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14 NV, X 14 NZ |
14 SE, C 14 SE, 16 NZR, 16 LZ2, C 16 NZ, X 16 SZ, X 16 SZR |
C 18 NZ, C 20 NZ |
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Valve stem play: |
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Intake valve: |
mm |
0.018 - 0.052 |
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Exhaust valve: |
mm |
0.038 - 0.072 |
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Permissible eccentricity of the valve stem |
mm |
0.03 |
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Ø Valve head |
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Intake valve: |
mm |
33.0 |
38.0 |
41.8 |
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Exhaust valve: |
mm |
29.0 |
31.0 |
36.5 |
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Valve seat angle at the valve head |
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92 ° |
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roto cap |
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Intake valve: |
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none |
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Exhaust valve: |
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none |
Cylinder Head (continued)
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Engine |
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14 NV, X 14 SE, C 14 SE |
C 14 NZ, X 14 NZ |
C 16 NZ, 16 NZR, X 16 SZ, X 16 SZR |
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camshaft |
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cam lift |
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Intake valve: |
mm |
6.12 |
5.20 |
5.61 |
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Exhaust valve: |
mm |
6.12 |
5.60 |
6.12 |
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Engine |
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C 16 SE |
16 LZ2, X 18 NZ |
C 20 NE |
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Camshaft |
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Cam lift |
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Intake valve: |
mm |
6.00 |
6.01 |
6.67 |
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Exhaust valve: |
mm |
6.00 |
6.39 |
6.67 |
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