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6A1 ENGINE (E-W) -
Cylinder Head and Valves
11A-12-7
INSPECTION
CYLINDER HEAD
(1) Check the cylinder head gasket surface for flatness by
using a straightedge and thickness gauge.
Standard value: 0.03 mm
Limit: 0.2 mm
(2) If the service limit is exceeded, correct to meet the
specification.
Grinding limit: *0.2 mm
*Includes/combined with cylinder block grinding
Cylinder head height (Specification when new):
119.9 - 120.1 mm <SOHC>
119.6 - 119.8 mm <MIVEC>
VALVE
(1) Check the valve face for correct contact. If incorrect, reface
using a valve refacer. Valve should make a uniform contact
with the seat at the centre of valve face.
(2) If the margin is smaller than the service limit, replace
the valve.
Standard value mm Limit mm
Intake 1.0 0.5
Exhaust 1.3 0.8
(3) Measure the overall height of the valve. If the specified
limit is exceeded, replace the valve.
Standard value
mm
Limit mm
Intake SOHC 113.02 112.52
MIVEC 112.37 111.87
Exhaust SOHC 115.32 114.82
MIVEC 110.74 110.74
PWEE9622
E
Feb. 1997Mitsubishi Motors Corporation
6AE0083
6EN0542
Valve seat
contact
Margin