General (B6284T; B6294S; 2000-2001): Specifications: Valves
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Valve crown diameter (A)
| B6284T |
| Inlet........31.00 0.15 mm |
| Exhaust........27.00 0.15 mm |
| B6294S |
| Inlet........32.00 0.15 mm |
| Exhaust........27.00 0.15 mm |
Valve stem diameter (B)
| B6284T |
| Inlet (early versions)........6.970 +0/-0.015 mm |
| Inlet (late versions)........5.970 +0/-0.015 mm |
| B6294S |
| Inlet (early versions)........6,963 0.007 mm |
| Inlet (late versions)........5.970 +0/-0.015 mm |
Valve stem diameter (B1/B2)
| B6284T |
| Exhaust (early versions) |
| H1 = 22.7 mm........B1 = 6.962 0.007 mm |
| H2 = 65.1 mm........B2 = 6.954 0.007 mm |
| Exhaust (late versions) |
| H1 = 22.7 mm........B1 = 5.962 0.007 mm |
| H2 = 65.1 mm........B2 = 5.954 0.007 mm |
| B6294S |
| Exhaust (early versions, alternative 1) |
| H1 = 17.4 mm........B1 = 6.963 0.007 mm |
| H2 = 70.4 mm........B2 = 6.953 0.007 mm |
| Exhaust (early versions, alternative 2) |
| H1 = 22.7 mm........B1 = 6.962 0.007 mm |
| H2 = 65.1 mm........B2 = 6.954 0.007 mm |
| Exhaust (late versions) |
| H1 = 22.7 mm........B1 = 5.962 0.007 mm |
| H2 = 65.1 mm........B2 = 5.954 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 |
Mating surface angle (E)
| 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 |