Subaru 2009 IMPREZA Service Manual page 1060

MECHANICAL
1. General Description
A: SPECIFICATION
Model
Cylinder arrangement
Valve system mechanism
Bore × Stroke
Displacement
Compression ratio
Compression pressure (at 200 — 300 rpm)
Number of piston rings
Intake valve timing
Engine
Exhaust valve timing
Valve
clearance
Idling speed
(at "P" or "N" position on AT model,
or neutral position on MT model)
Ignition order
Ignition timing
General Description
Open
Close
Open
Close
Intake
Inspection
value
Exhaust
mm (in)
Intake
Adjustment
value
Exhaust
rpm
ME(H4DOTC)-2
Horizontally opposed, liquid cooled, 4-cylinder,
Belt driven, double overhead camshaft,
mm (in)
3
cm (cu in)
2
kPa (kg/cm , psi) 981 — 1,177 (10 — 12, 142 — 171)
Max. retard
Min. advance
Max. retard
Min. advance
0.20
0.20
No load
A/C ON
BTDC/rpm
2.5 L
4-stroke gasoline engine
4-valve/cylinder
99.5 × 79.0 (3.92 × 3.11)
2,457 (149.94)
8.4
Pressure ring: 2, Oil ring: 1
ATDC 5°
BTDC 35°
ABDC 65°
ABDC 25°
BBDC 55°
ATDC 5°
+0.04 +0.0016
(0.0079
–0.06 –0.0024
0.35 0.05 (0.0138 0.0020)
+0.01 +0.0004
(0.0079
–0.03 –0.0012
0.35 0.02 (0.0138 0.0008)
700 100
AT model: 825 100
MT model: 800 100
1 3 2 4
AT model: 17° 10°/700
MT model: 12° 10°/700
)
)