Mitsubishi 4G9 8

	4G9 ENGINE (E–W) – Specifications			11A-1-3

Items			Standard value	Limit

Valve stem projec-	SOHC	Intake	49.30	49.80
tion mm
tion mm		Exhaust	49.35	49.85
		Exhaust	49.35	49.85

	DOHC	Intake	46.70	47.20

		Exhaust	46.65	47.15

	DOHC–MIVEC	Intake	58.13	58.63

		Exhaust	57.85	58.35

	DOHC–GDI	Intake	46.70	47.20

		Exhaust	46.65	47.15

Cylinder head bolt shank length mm			–	96.4

Valve stem O.D. mm			6.0	–

Valve face angle			45_ – 45.5_	–

Valve spring load/installed height N/mm		SOHC	216/44.2	–

		DOHC	255/44.5	–

		DOHC–MIVEC	255/44.5	–

		DOHC–GDI	196/37.5	–

Valve guide I.D. mm			6.0	–

Font case, oil pump and oil pan

Oil pump tip clearance mm			0.06 – 0.18	–

Oil pump side clearance mm			0.04 – 0.10	–

Oil pump body clearance mm			0.10 – 0.18	0.35

Piston and connecting rod

Piston ring to piston ring groove clearance		No. 1	0.03 – 0.07	0.1
mm
mm		No. 2	0.02 – 0.06	0.1
		No. 2	0.02 – 0.06	0.1

Piston ring end gap	No. 1	4G92, 4G93	0.25 – 0.40	0.8
mm
mm		4G94	0.15 – 0.30	0.8
		4G94	0.15 – 0.30	0.8

	No. 2		0.40 – 0.55	0.8

	Oil ring	SOHC (4G92, 4G93)	0.20 – 0.60	1.0

		SOHC (4G94),	0.10 – 0.35	1.0
		DOHC

Crankshaft pin oil clearance mm			0.02 – 0.05	0.1

Piston pin press-in load N [Room temperature]			4,500 – 14,700	–

Connecting rod big end side clearance mm			0.10 – 0.25	0.4

Piston pin O.D. mm			19.0	–

Piston O.D. mm		4G92, 4G93	81.0	–

		4G94	81.5	–

Crankshaft, cylinder block, flywheel and drive plate

Crankshaft journal oil clearance mm			0.02 – 0.04	0.1

Cylinder block gasket surface flatness mm			0.05	0.1

Grinding limit of cylinder block gasket surface mm			–	0.2*
*Total resurfacing depth of both cylinder head and cylinder block

E Mitsubishi Motors CorporationMar. 2001

PWEE9502-I

Revised