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Valve face width B (intake)
Valve face width B (exhaust)
Valve seat width C (intake)
Valve seat width C (exhaust)
Valve margin thickness D (intake)
Valve margin thickness D (exhaust)
Valve stem diameter (intake)
Limit
Valve stem diameter (exhaust)
Limit
Valve guide inside diameter (intake)
Limit
Valve guide inside diameter (exhaust)
Limit
Valve-stem-to-valve-guide clearance (intake)
Limit
Valve-stem-to-valve-guide clearance (exhaust)
Limit
Valve stem runout
Cylinder head valve seat width (intake)
Cylinder head valve seat width (exhaust)
Valve spring
Inner spring
Free length (intake)
Free length (exhaust)
Installed length (intake)
Installed length (exhaust)
Spring rate K1 (intake)
Spring rate K2 (intake)
Spring rate K1 (exhaust)
Spring rate K2 (exhaust)
ENGINE SPECIFICATIONS
1.200–2.480 mm (0.0472–0.0976 in)
1.625–2.900 mm (0.0640–0.1142 in)
0.90–1.10 mm (0.0354–0.0433 in)
0.90–1.10 mm (0.0354–0.0433 in)
1.10–1.50 mm (0.0433–0.0591 in)
0.50–0.90 mm (0.0197–0.0354 in)
4.975–4.990 mm (0.1959–0.1965 in)
4.960 mm (0.1953 in)
4.460–4.475 mm (0.1756–0.1762 in)
4.425 mm (0.1742 in)
5.000–5.012 mm (0.1969–0.1973 in)
5.050 mm (0.1988 in)
4.500–4.512 mm (0.1772–0.1776 in)
4.550 mm (0.1791 in)
0.010–0.037 mm (0.0004–0.0015 in)
0.080 mm (0.0032 in)
0.025–0.052 mm (0.0010–0.0020 in)
0.100 mm (0.0039 in)
0.010 mm (0.0004 in)
0.90–1.10 mm (0.0354–0.0433 in)
0.90–1.10 mm (0.0354–0.0433 in)
39.79 mm (1.57 in)
38.42 mm (1.51 in)
35.50 mm (1.40 in)
33.00 mm (1.30 in)
42.91 N/mm (245.02 lb/in) (4.38 kgf/mm)
56.23 N/mm (321.07 lb/in) (5.73 kgf/mm)
40.10 N/mm (228.97 lb/in) (4.09 kgf/mm)
51.85 N/mm (296.06 lb/in) (5.29 kgf/mm)
2-4
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