Subaru 2004 Automobile User Manual


 
ME(H4DOTC)-6
MECHANICAL
General Description
2. STi MODEL
NOTE:
STD: Standard I.D.: Inner Diameter O.D.: Outer Diameter OS: Oversize US: Undersize
Crankshaft
bearing
Crankshaft bearing thick-
ness
#1, #3
STD 1.998 2.011 mm (0.0787 0.0792 in)
0.03 mm
(0.0012
in) US
2.017 2.020 mm (0.0794 0.0795 in)
0.05 mm
(0.0020
in) US
2.027 2.030 mm (0.0798 0.0799 in)
0.25 mm
(0.0098
in) US
2.127 2.130 mm (0.0837 0.0839 in)
#2, #4, #5
STD 2.000 2.013 mm (0.0787 0.0793 in)
0.03 mm
(0.0012
in) US
2.019 2.022 mm (0.0795 0.0796 in)
0.05 mm
(0.0020
in) US
2.029 2.032 mm (0.0799 0.0800 in)
0.25 mm
(0.0098
in) US
2.129 2.132 mm (0.0838 0.0839 in)
Engine
Type
Horizontally opposed, liquid cooled, 4-cylinder,
4-stroke gasoline engine
Valve arrangement Belt driven, double overhead camshaft, 4-valve/cylinder
Bore × Stroke mm (in) 92 × 75 (3.62 × 2.95)
Piston displacement
cm
3
(cu in)
1,994 (121.67)
Compression ratio 8.0
Compression pres-
sure (at 200 300
rpm)
kPa (kgf/cm
2
, psi)
981 1,177 (10 12, 142 171)
Number of piston rings Pressure ring: 2, Oil ring: 1
Intake valve timing
Opening
Max. retard ATDC 6°
Min. advance BTDC 24°
Closing
Max. retard ABDC 68°
Min. advance ABDC 38°
Exhaust valve timing
Opening BBDC 58°
Closing ATDC 10°
Valve clearance
Intake mm (in) 0.20±0.02 (0.0079±0.0008)
Exhaust mm (in) 0.35±0.02 (0.0138±0.0008)
Idling speed
[At neutral position on MT]
rpm
700±100 (No load)
800±150 (A/C switch ON)
Firing order 1 3 2 4
Ignition timing BTDC/rpm 12°±10°/700