Mitsubishi Motors 4G9 - Manual (Page 8)

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4G9 ENGINE (E–W) – Specifications
11A-1-3
Items Limit Standard value
Valve stem projec-
tion mm SOHC Intake 49.30 49.80
tion mm
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
mm No. 1 0.03 – 0.07 0.1
mm
No. 2 0.02 – 0.06 0.1
Piston ring end gap
mm No. 1 4G92, 4G93 0.25 – 0.40 0.8
mm
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),
DOHC 0.10 – 0.35 1.0
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
*Total resurfacing depth of both cylinder head and cylinder block – 0.2*
PWEE9502-I
E
Mar. 2001 Mitsubishi Motors Corporation Revised