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4G1 ENGINE (E-W) -
Cylinder Head and Valves
11A-9-6
PWEE9520
E
Nov. 1995Mitsubishi Motors Corporation
4. VALVE GUIDES
(1) Measure the clearance between the valve guide an d valve
stem. If the clearance exceeds the specified limit, replace
either or both components.
Standard mm Limit mm
Intake SOHC 12-VALVE 0.020 - 0.050 0.10
SOHC 16-VALVE 0.020 - 0.047 0.10
DOHC 0.020 - 0.047 0.10
Exhaust SOHC 12-VALVE 0.050 - 0.085 0.15
SOHC 16-VALVE 0.030 - 0.062 0.15
DOHC 0.030 - 0.057 0.15
5. VALVE SEATS
(1) Assemble the valve, then measure the valve stem
projection between the end of the valve stem and the
spring seating surface. If the measurement exceeds th e
specified limit, replace the valve seat.
Standard mm Limit mm
SOHC Intake 43.70 44.20
12-VALVE
Exhaust 43.30 43.80
SOHC Intake 53.21 53.71
16-VALVE
Exhaust 54.10 54.60
DOHC Intake 48.80 49.30
Exhaust 48.70 49.20
PWEE9520-A
E
Dec. 1998Mitsubishi Motors Corporation Revised
Valve
guide
Guide I. D.
Stem O. D.
1EN0279
Valve stem end
Valve projection
Spring seating
surface