Specifications
Table Of Contents
- 11B ENGINE <6G7 - From 2002>
- GENERAL INFORMATION
- 1. SPECIFICATIONS
- 2. SPECIAL TOOLS
- 3. ALTERNATOR
- 4. CONTROL AND EGR SYSTEM
- 5. INTAKE AND IGNITION SYSTEM
- 6. TIMING BELT
- 7. WATER PIPE AND WATER HOSE
- 8. FUEL SYSTEM
- 9. EXHAUST MANIFOLD
- 10. ROCKER ARMS AND CAMSHAFT
- 11. ROCKER ARMS AND CAMSHAFT
- 12. CYLINDER HEAD AND VALVES
- 13. OIL PAN AND OIL PUMP
- 14. PISTON AND CONNECTING ROD
- 15. CRANKSHAFT, FLYWHEEL AND DRIVE PLATE
- Service bulletins
6G7 ENGINE – Cylinder Head and Valves
11B-12-9
PWEE9520
E
Nov. 1995Mitsubishi Motors Corporation
INSPECTION
1. CYLINDER HEAD
(1) Check the cylinder head for water leaks, gas leaks,
damage or cracks before washing it.
(2) Completely remove oil, fur, sealer, carbon and the
like.
After washing the oil passages, blow air through them
to make sure they are not clogged.
(3) To ensure flatness of the cylinder head bottom surface,
measure the distortion of the surface using a straight
edge and a thickness gauge. When the distortion
exceeds the specifications, correct by grinding the
surface.
Standard values of bottom surface distortion:
12-valve engine: 0.05 mm
24-valve, GDI engine: 0.03 mm
Limit: 0.2 mm
Grinding limit: 0.2 mm
Height of the cylinder head:
12-valve engine: 84 mm
24-valve engine: 120 mm
GDI engine: 132 mm
Caution
The cylinder head bottom surface may be ground
to within 0.2 mm of the mating cylinder block.
2. VALVES
(1) When contact between the valve and the valve seat
is improper, unbalanced or nonexistent, correct the
valve seat.
(2) Change the valve when the margin doesn’t meet the
specifications.
Item Standard
value mm
Limit mm
12-valve Intake 1.2 0.7
Exhaust 2.0 1.5
24-valve Intake 1.0 0.5
Exhaust 1.2 0.7
GDI Intake 1.0 0.5
Exhaust 1.5 1.0
PWEE9061-I
E
Aug. 2001Mitsubishi Motors Corporation Added
7EN0258
6EN0542
Margin
Contact to be at
the centre of the
valve face.