Valve Spring
WARNING: This page is about a different variant/trim than selected.
- Check the valve spring for damage and deformation.
- Using a caliper gauge, valve spring tester, surface plate and try square, check the valve spring free length (reference), tension/spring height and squareness. If it is not within the standard, replace the valve spring.NOTE:
- Measurement should be performed at a temperature of 20°C (68°F).
- The free length of the valve spring is described as a reference. There is no need to replace the valve spring if the free length of the valve spring alone is out of standard.
- To check the squareness of the valve spring, stand the valve spring on a surface plate and check its deflection at the top of the valve spring using a try square.
Valve spring free length (reference):
CVT model
Standard
41.68 mm (1.6409 in)
MT model
Standard
41.06 mm (1.6165 in)
Valve spring tension/spring height:
CVT model
Set
Standard
182 - 210 N (18.56 - 21.41 kgf, 40.92 - 47.22 lbf)/33.0 mm (1.2992 in)
Lift
Standard
502 - 554 N (51.19 - 56.49 kgf, 112.87 - 124.56 lbf)/22.0 mm (0.8661 in)
MT model
Set
Standard
182 - 210 N (18.56 - 21.41 kgf, 40.92 - 47.22 lbf)/33.0 mm (1.2992 in)
Lift
Standard
552 - 610 N (56.29 - 62.20 kgf, 124.11 - 137.15 lbf)/22.0 mm (0.8661 in)
Valve spring squareness:
Standard
2.5°, 1.8 mm (0.0709 in) or less