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Mitsubishi 6G7 Valve Guide, Standard value Intake 0.02 - 0.04 mm, Exhaust, 0.06 mm, Limit

Models: 6G7

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VALVE GUIDE

11A-10-46G7 ENGINE (E - W) - Cylinder Head and Valves

Stem outside diameter

Guide inside diameter

1EN0279

Valve stem end

Valve protrusion

Spring seat surface

DEN0212

65_

65_

25_

15_

44_

44_

7EN0273

0.5 - 1 mm

Cut off

0.5 - 1 mm

1EN0274

Height of valve seat

Oversize hole diameter

1EN0275

E Mitsubishi Motors Corporation

Dec. 1996

VALVE GUIDE

(1)Measure the clearance between the valve guide and the valve stem. When the clearance exceeds the specified limit, change the valve guide or the valve or both.

Standard value: Intake 0.02 - 0.04 mm

	Exhaust 0.04	- 0.06 mm
Limit:	Intake 0.10 mm
	Exhaust 0.15	mm

VALVE SEAT

(1)Assemble the valve, and with it pressed down on the valve seat measure the part of the valve which protrudes from the spring seat surface. The length measured should be between the spring seat surface and the valve stem end. If the measured value exceeds the limit, change the valve.

Standard value: 49.3 mm

Limit: 49.8 mm

VALVE SEAT RECONDITIONING PROCEDURE

(1)Check the clearance between the valve guide and the valve, and if necessary, change the valve guide before correcting the valve seat.

(2)Correct so that the valve seat width and angle are as specified in the figure at left.

(3)After making the corrections, apply lapping compound and adjust the valve and valve seat.

VALVE SEAT REPLACEMENT PROCEDURE

(1)Cut off the inside of the valve seat to reduce its thickness before pulling out the valve seat.

(2)Adjust the valve cylinder hole in the cylinder head to the diameter of the oversize valve seat to be press fitted.

Intake valve seat hole diameter

0.30O.S. 34.30 - 34.33 mm

0.60O.S. 34.60 - 34.63 mm

Exhaust valve seat hole diameter

0.30O.S. 31.80 - 31.83 mm

0.60O.S. 32.10 - 32.13 mm

(3)When press fitting a valve seat, cool it using liquid nitrogen so as not to gall the cylinder head inside diameter.

(4)Machine the valve seat.

(5)See “Valve seat reconditioning procedure.”

PWEE9615

Image 35

Mitsubishi 6G7 Valve Guide, Standard value Intake 0.02 - 0.04 mm, Exhaust, 0.06 mm, Limit, Intake 0.10 mm, Valve Seat

Contents

6G7 SERIES CONTENTS11A-0-1 ENGINEPWEE9615 11A-0-2E Mitsubishi Motors Corporation Dec6G7 ENGINE E - W - General Information GENERAL SPECIFICATIONSGENERAL INFORMATION 11A-0-311A-1-1 1. SPECIFICATIONS6G7 ENGINE E - W - Specifications SERVICE SPECIFICATIONSPiston and connecting rod REWORK DIMENSIONS11A-1-2 6G7 ENGINE E - W - SpecificationsAlternator TORQUE SPECIFICATIONS11A-1-3 6G7 ENGINE E - W - SpecificationsExhaust manifold 11A-1-46G7 ENGINE E - W - Specifications Intake manifoldPiston and connecting rod 11A-1-5SEALANTS 6G7 ENGINE E - W - SpecificationsSurface Preparation Disassembly11A-1-6 FORM-IN-PLACEGASKET6G7 ENGINE E - W - Special Tools 2. SPECIAL TOOLS11A-2-1 6G7 ENGINE E - W - Special Tools 11A-2-26G7 ENGINE E - W - Alternator REMOVAL AND INSTALLATION3. ALTERNATOR 11A-3-1AA CRANKSHAFT BOLT REMOVAL SERVICE POINTSINSTALLATION SERVICE POINTS 11A-3-2REMOVAL AND INSTALLATION 4. AIR INTAKE PLENUM11A-4-1 6G7 ENGINE E - W - Air Intake Plenum6G7 ENGINE E - W - Air Intake Plenum 11A-4-2AA THROTTLE BODY GASKET INSTALLATION SERVICE POINTSREMOVAL AND INSTALLATION 5. IGNITION SYSTEM11A-5-1 6G7 ENGINE E - W - Ignition System17 16 18 8 6. TIMING BELT11A-6-1 6G7 ENGINE E - W - Timing BeltAB CAMSHAFT SPROCKET BOLT 11A-6-2INSPECTION AA TIMING BELTStandard value “L” 1 mm or less 11A-6-3AUTO-TENSIONER Standard value “L” 12 mm6G7 ENGINE E - W - Timing Belt 11A-6-4CA TIMING BELT Timing mark Water pump pulley Camshaft sprocket 11A-6-56G7 ENGINE E - W - Timing Belt MD9987696G7 ENGINE E - W - Timing Belt 11A-6-6Standard value 3.8 - 5.0 mm DA ENGINE SUPPORT BRACKETREMOVAL AND INSTALLATION 7. INTAKE MANIFOLD11A-7-1 6G7 ENGINE E - W - Intake ManifoldAA O-RING /WATER PIPE COOLANT TEMPERATURE SENSOR Specified sealantTEMPERATURE GAUGE UNIT Specified sealant 11A-7-2HA FUEL PRESSURE REGULATOR 11A-7-3FA INTAKE MANIFOLD GAINJECTORREMOVAL AND INSTALLATION 8. EXHAUST MANIFOLD & WATER PUMP11A-8-1 6G7 ENGINE E - W - Exhaust Manifold & Water PumpAA O-RING /WATER PIPE D Keep the O-ringfree of oil greaseBA EXHAUST MANIFOLD GASKET INSTALLATION SERVICE POINTS6 10 9. ROCKER ARMS AND CAMSHAFT11A-9-1 6G7 ENGINE E - W - Rocker Arms and CamshaftCAMSHAFT LASH ADJUSTER LEAK DOWN TESTAA LASH ADJUSTER DDo not disassemble lash adjusterCA ROCKER ARM SHAFT BA LASH ADJUSTER11A-9-3 AA CAMSHAFTMD998713 DA ROCKER SHAFT SPRINGEA OIL SEAL Rocker shaft spring17 22 21 10. CYLINDER HEAD AND VALVES11A-10-1 6G7 ENGINE E - W - Cylinder Head and ValvesREMOVAL SERVICE POINTS AA CYLINDER HEAD BOLT AB RETAINER LOCKAC VALVE STEM SEAL D Do not reuse the stem sealHeight of the cylinder head 120 mm 11A-10-3CYLINDER HEAD Limit 0.2 mm Grinding limit 0.2 mmStandard value Intake 0.02 - 0.04 mm VALVE SEAT RECONDITIONING PROCEDUREVALVE SEAT REPLACEMENT PROCEDURE VALVE GUIDE0.05O.S. 11.05 - 11.07 mm VALVE GUIDE REPLACEMENT PROCEDURE11A-10-5 Diameter of the valve guide holeSpring BA VALVE SPRINGCA VALVE RETAINER LOCK IdentificationREMOVAL AND INSTALLATION 11. OIL PAN AND OIL PUMP11A-11-1 6G7 ENGINE E - W - Oil Pan and Oil PumpAC OIL PUMP OUTER AND INNER ROTORS 11A-11-2 6G7 ENGINE E - W - Oil Pan and Oil PumpAA OIL PAN LOWER AB OIL PAN UPPERAA OIL PUMP INNER AND OUTER ROTORS 11A-11-3Standard value 0.04 - 0.10 mm Standard value 0.10 - 0.18 mm Limit 0.35 mmLiquid gasket 11A-11-4 6G7 ENGINE E - W - Oil Pan and Oil PumpCA OIL SEAL DA OIL PAN UPPER FA OIL FILTER GAOIL PRESSURE SWITCH11A-11-5 EA OIL PAN LOWER86 10 7 9 11 12 12. PISTON AND CONNECTING ROD6G7 ENGINE E - W - Piston and Connecting Rod 11A-12-1REMOVAL SERVICE POINTS AA CONNECTING ROD CAPAB PISTON PIN No. 2 0.02 - 0.06 mm 11A-12-3PISTON RING Standard values No. 1 0.03 - 0.07 mmINSTALLATION SERVICE POINTS AA PISTON PINStandard values 7,350 - 17,200 N 6G7 ENGINE E - W - Piston and Connecting Rod 11A-12-5BA OIL RING CA PISTON RING NO. 2 / PISTON RING NOStandard value 0.10 - 0.25 mm Limit 0.4 mm DA PISTON AND CONNECTING RODEA CONNECTING ROD CAP Removal steps 13. CRANKSHAFT, FLYWHEEL AND DRIVE PLATE18 15 17 11 REMOVAL AND INSTALLATIONStandard values 0.05 mm Limit 0.1 mm CRANKSHAFT OIL CLEARANCE PLASTIGAUGE METHODStandard values 0.02 - 0.04 mm Limit 0.1 mm CYLINDER BLOCK0.02- 0.04 mm BORING CYLINDERPiston size identification Clearance between piston and cylinderINSTALLATION SERVICE POINTS AA CRANKSHAFT BEARINGBA BEARING CAP / BEARING BOLT MITSUBISHI GENUINE Part No. MD970389 Standard value 0.05 - 0.25 mm Limit 0.3 mmCA CRANKSHAFT REAR OIL SEAL DA OIL SEAL CASE