Illustration
- 1. Cylinder head height
- 2. Installation height of valve guide
- 3. Installation height of valve
- 4. Valve seat width in cylinder head
- 5. Valve seat angle in cylinder head
- 6. Valve stem diameter
- 7. Valve seat angle at valve
- 8. Valve length
- 9. Valve head – diameter
| Engine | | Z 17 DTJ / Z 17 DTR / A 17 DTJ / A 17 DTR |
|---|
| Cylinder head height 1) | mm | 94.95 - 95.05 |
| Valve seat width in cylinder head | | |
| Intake valve | mm | 1.6 - 1.8 |
| Exhaust valve | mm | 1.4 - 1.6 |
| Valve seat angle in cylinder head | | 89.5° |
| Valve guide inside diameter | mm | 6.0 |
| Length of valve guide | | |
| Intake valve | mm | 41.75 - 42.25 |
| Exhaust valve | mm | 41.75 - 42.25 |
| Installation height of valve guide | | |
| Intake valve | mm | 11.6 - 11.8 |
| Exhaust valve | mm | 11.6 - 11.8 |
| Installation height of valves | | |
| Intake valve | mm | 41.5 - 41.7 |
| Exhaust valve | mm | 41.5 - 41.7 |
| Engine | | Z 17 DTJ / Z 17 DTR / A 17 DTJ / A 17 DTR |
|---|
| Valve length | | |
| Standard size | | |
| | Intake valve | mm | 102.5 |
| | Exhaust valve | mm | 102.2 |
| Ø Valve stem | | |
| Standard size | | |
| | Intake valve | mm | 5.97 |
| | Exhaust valve | mm | 5.96 |
| Valve lash | | |
| Standard size | | |
| | Intake valve | mm | 0.40 |
| | Exhaust valve | mm | 0.40 |
| Engine | | Z 17 DTJ / Z 17 DTR / A 17 DTJ / A 17 DTR |
|---|
| Allocation of codes to cup tappets |
| Code | | Dimension |
| 46 | mm | 3.460 |
| 48 | mm | 3.480 |
| 50 | mm | 3.500 |
| 52 | mm | 3.520 |
| 54 | mm | 3.540 |
| 56 | mm | 3.560 |
| 58 | mm | 3.580 |
| 60 | mm | 3.600 |
| 62 | mm | 3.620 |
| 64 | mm | 3.640 |
| 66 | mm | 3.660 |
| 68 | mm | 3.680 |
| 70 | mm | 3.700 |
| 72 | mm | 3.720 |
| 74 | mm | 3.740 |
| 76 | mm | 3.760 |
| 78 | mm | 3.780 |
| 80 | mm | 3.800 |
| 82 | mm | 3.820 |
| 84 | mm | 3.840 |
| 86 | mm | 3.860 |
| 88 | mm | 3.880 |
| 90 | mm | 3.900 |
| 92 | mm | 3.920 |
| 94 | mm | 3.940 |
| 96 | mm | 3.960 |
| 98 | mm | 3.980 |
| 00 | mm | 4.000 |
| 02 | mm | 4.020 |
| 04 | mm | 4.040 |
| 06 | mm | 4.060 |
| 08 | mm | 4.080 |
| 10 | mm | 4.100 |
| 12 | mm | 4.120 |
| 14 | mm | 4.140 |
| Engine | | Z 17 DTJ / Z 17 DTR / A 17 DTJ / A 17 DTR |
|---|
| Valve stem play | | |
| | Intake valve | mm | 0.0190 |
| | Exhaust valve | mm | 0.0215 |
| perm. runout of the valve stem | mm | 0.0100 |
| Ø Valve head | | |
| | Intake valve | mm | 27.5 |
| | Exhaust valve | mm | 25.5 |
| Valve seat angle at valve head | mm | 91° |
| Valve rotator | | |
| | Intake valve | | No code |
| | Exhaust valve | | No code |
| Camshaft | | |
| Cam lift | | |
| | Intake | mm | 7.75 (new) - 7.70 (run in) |
| | Exhaust | mm | 8.40 (new) - 8.35 (run in) |
) Regrinding the cylinder head is only permissible within the tolerance. If the cylinder head goes below the minimum dimension of 94.95 mm, it must be replaced.
