Intake Valve And Exhaust Valve
WARNING: This page is about a different car, the 2013 Subaru Forester. However, it is still accessible from the selected car via links, so may be relevant.
- Check the valve flange and valve stem for damage, wear or deformation.
- Check the height "H" in the figure using a caliper gauge. If it is not within the standard, replace the valve.NOTE:
- It is possible to differentiate between the intake valve and the exhaust valve by their overall length.
Valve overall length:
Intake
103.3 mm (4.067 in)
Exhaust
94.1 mm (3.705 in)
- If the valve is replaced, put a small amount of grinding compound on the valve seat surface of cylinder head, and lap the valve and valve seat surfaces.
Head edge thickness H:
Intake (A)
Standard
0.8 - 1.2 mm (0.031 - 0.047 in)
Exhaust (B)
Standard
1.0 - 1.4 mm (0.039 - 0.055 in)