Subaru 2009 IMPREZA Service Manual page 336

COOLING
1. General Description
A: SPECIFICATION
Cooling system
Total engine coolant capacity
Type
Discharge
performance I
Discharge
performance II
Water pump
Discharge
performance III
Impeller diameter
Number of impeller vanes
Pump pulley diameter
Clearance between impeller
and case
Type
Starting temperature to open
Thermostat Fully opens
Valve lift
Valve bore
Motor input
Radiator fan
Fan diameter /
Blade
Type
Core
dimensions
Radiator
Pressure range in which cap
valve is open
Fins
Reservoir
Capacity
tank
Coolant
Water for dilution
Cooling system protective agent
General Description
2 (US qt, Imp qt)
Discharge
2 (US gal, Imp gal) /min.
rate
Pump speed — Discharge pressure
Engine coolant temperature
Discharge
2 (US gal, Imp gal) /min.
rate
Pump speed — Discharge pressure
Engine coolant temperature
Discharge
2 (US gal, Imp gal) /min.
rate
Pump speed — Discharge pressure
Engine coolant temperature
Standard
Main fan
Sub fan
Main fan
Sub fan
Width × Height × Thickness
kPa (kg/cm
2 (US qt, Imp qt)
Recommended materials
SUBARU SUPER COOLANT
(Concentrated type)
SUBARU SUPER COOLANT
(Diluted type)
Distilled water
Cooling system conditioner
CO(H4SO)-2
Electric fan + Forced engine coolant circulation system
AT model: Approx. 6.7 (7.1, 5.9)
MT model: Approx. 6.8 (7.2, 6.0)
Centrifugal impeller type
760 rpm — 2.9 kPa (0.3 mAq)
3,000 rpm — 49 kPa (5.0 mAq)
6,000 rpm — 225.4 kPa (23 mAq)
mm (in)
mm (in)
mm (in) 0.5 — 1.5 (0.020 — 0.060)
80 — 84°C (176 — 183°F)
mm (in) 9.0 (0.354) or more
mm (in)
300 mm (11.81 in)/4
300 mm (11.81 in)/5
Down flow, pressure type
mm (in)
(27.06 × 13.39 × 0.63)
Above: 108 14.7 (1.1 0.15, 16 2.1)
2
, psi)
Below: –1.0 — –4.9 (–0.01 — –0.05, –0.1 — –0.7)
Corrugated fin type
Item number
—
K0670Y0000
—
SOA345001
20 (5.3, 4.4)
80°C (176°F)
100 (26.4, 22.0)
80°C (176°F)
200 (52.8, 44.0)
80°C (176°F)
76 (2.99)
8
60 (2.36)
Wax pellet type
95°C (203°F)
35 (1.38)
90 W
90 W
687.4 × 340 × 16
0.45 (0.48, 0.40)
Alternative
—
Soft water or tap water
—