Subaru Impreza 2002 Service Manual page 141

MECHANICAL
1. General Description
A: SPECIFICATIONS
Type
Valve arrangement
Bore x Stroke
Piston displacement
Compression ratio
Compression pressure
(at 200 — 300 rpm)
Number of piston rings
Engine
Intake valve timing
Exhaust valve timing
Valve clearance
Idling speed [At neutral position]
Firing order
Ignition timing
NOTE:
STD: Standard I.D.: Inner Diameter O.D.: Outer Diameter OS: Oversize US: Undersize
GENERAL DESCRIPTION
mm (in)
3
cm (cu in)
2
kPa (kg/cm , psi)
Max. retard
Opening
Min. advance
Max. retard
Closing
Min. advance
Opening
Closing
Intake mm (in)
Exhaust mm (in)
rpm
BTDC/rpm
ME(STi)-2
Horizontally opposed, liquid cooled, 4-cylinder,
4-stroke gasoline engine
Belt driven, double overhead camshaft, 4-valve/cylinder
92 x 75 (3.62 x 2.95)
1,994 (121.67)
8.0
981 — 1,177 (10 — 12, 142 — 171)
Pressure ring: 2, Oil ring: 1
58° BBDC
10° ATDC
0.20±0.02 (0.0079±0.0008)
0.25±0.02 (0.0098±0.0008)
700±50 (No load)
750±50 (A/C switch ON)
1 → 3 → 2 → 4
12°±3°/700 rpm
ATDC 6°
BTDC 29°
ABDC 68°
ABDC 33°