Mitsubishi Motors 4G9 - Manual (Page 7)

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4G9 ENGINE (E–W) – Specifications
11A-1-2
Items Standard value Limit
Cylinder head and valve
Cylinder head gasket surface flatness mm Less than 0.03 0.2
Grinding limit of cylinder head gasket surface mm
*Total resurfacing depth of both cylinder head and cylinder block – 0.2*
Cylinder head overall height mm SOHC 119.9 – 120.1 –
DOHC 131.9 – 132.1 –
DOHC–MIVEC 119.8 – 120.0 –
DOHC–GDI 131.9 – 132.1 –
Thickness of valve
head (margin) mm SOHC Intake 1.0 0.5
head (margin) mm
Exhaust 1.3 0.8
DOHC Intake 1.0 0.5
Exhaust 1.2 0.7
Valve overall height
mm SOHC Intake 110.15 109.65
mm
Exhaust 113.70 113.20
DOHC Intake 104.19 103.69
Exhaust 103.87 103.37
DOHC–MIVEC Intake 115.63 115.13
Exhaust 115.63 115.13
DOHC–GDI Intake 104.19 103.69
Exhaust 103.87 103.37
Valve spring free length mm SOHC (with lash ad-
juster) 50.9 49.9
SOHC (with adjust-
ing screw) 49.5 48.5
DOHC 45.0 44.0
DOHC–MIVEC 51.5 50.5
DOHC–GDI 44.8 43.8
Valve spring out-of-squareness Max. 2
_
4
_
Valve stem to valve
guide clearance mm Except DOHC–GDI
for PAJERO io Intake 0.02 – 0.05 0.10
guide clearance mm for PAJERO io
Exhaust 0.05 – 0.09 0.15
DOHC–GDI
for PAJERO io Intake 0.02 – 0.05 0.10
for PAJERO io
Exhaust 0.04– 0.06 0.15
Valve seat valve contact width mm 0.9 – 1.3 –
Valve guide projection from cylinder head
pper s rface mm
SOHC 14.0 –
upper surface mm
DOHC 19.0 –
PWEE9502-K
E
Jun. 2002 Mitsubishi Motors Corporation Revised