Subaru 2006 Legacy, Manual

Page: 2226 / 4302

ME(H4DOTC)-2
General Description
MECHANICAL
1. General Description
A: SPECIFICATION
NOTE:
OS: Oversize US: Undersize
Engine
Cylinder arrangement
Horizontally opposed, liquid cooled,
4-cylinder, 4-stroke gasoline engine
Valve system mechanism
Belt driven, double overhead camshaft,
4-valve/cylinder
Bore × Stroke mm (in) 99.5 × 79.0 (3.92 × 3.11)
Displacement
cm
3
(cu in)
2,457 (149.94)
Compression ratio 8.2
Compression pressure (at 400 rpm)
kPa (kg/cm
2
, psi)
981 — 1,177 (10 — 12, 142 — 171)
Number of piston rings Pressure ring: 2, Oil ring: 1
Intake valve timing
Open
Max.retard ATDC 5°
Min. advance BTDC 15°
Close
Max.retard ABDC 65°
Min. advance ABDC 45°
Exhaust valve timing
Open BBDC 55°
Close ATDC 5°
Valve clearance mm (in)
Intake 0.20
±
0.02 (0.0079
±
0.0008)
Exhaust 0.35
±
0.02 (0.0138
±
0.0008)
Idle rpm [“P” or “N” range] rpm
No load 750
±
100
A/C ON 875
±
100
Ignition order 1
→
3
→
2
→
4
Ignition timing BTDC/rpm
MT model 12°
±
10°/750
AT model 17°
±
10°/750
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