Specifications, mechanical: Valves
Valve crown diameter (A)
| Inlet........31.00 0.15 mm |
| Exhaust........27.00 0.15 mm |
Valve stem diameter (B)
| Inlet (early versions)........6.970 +0/-0.015mm |
| Inlet (late versions)........5.970 +0/-0.015mm |
Valve stem diameter (B1/B2)
| Exhaust (early versions) | |
| H1 = 22.7 mm | B1 = 6,962 0.007 mm |
| H2 = 65.1 | B2 = 6,954 0.007 mm |
| Exhaust (late versions) | |
| H1 = 22.7 mm | B1 = 5.962 0.007 mm |
| H2 = 65.1 | B2 = 5954 0.007 mm |
Total valve length (C)
| Inlet........102.00 0.07 mm |
| Exhaust........101.05 0.07 mm |
Disc edge height (D)
| Inlet and exhaust........1.50 mm |
| Minimum height after grinding........1.20 mm |
Valve angle
| Inlet and exhaust........44.5° |
Valve stem vertical position
| Valve stem height........48.4 0.5 mm |
| Maximum machining of the valve stem........0.5 mm |