Subaru 1600 Service Manual page 42

ENGINE
4. Cooling System Specifications
SUBARU 1800 SUBARU 1600
~
Cooling system
Electric fan
+
Forced cooling water circulation system
!----~
Total coolant capacity
5.511 (5.8 US qt, 4.8 Imp qt) 5.311 (5.6 US qt, 4.7 Imp qt)
Type Centrifugal impeller type
Discharge
7 II/min (7.4 US qt/min, 6.2 Imp qt/min) or more
Discharge
Pump speed-
performance
total water head
1,000 rpm - 0.29 m Aq (0.95 ft Aq)
I
Water temperature 75 - 8s·C (167 - 18s·F)
Water pump
Discharge SOli/min (13.2 US gal, 11.0 Imp gal) or more
Discharge
Pump speed-
performance 4,000 rpm - 5.0 m Aq (16.4 ft Aq)
II
total water head
Water temperature 75
8S·C (167 - 18s·F)
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Impeller diameter
64 mm (2.52 in)
Number of impeller vanes
5
Pump pulley diameter 84 mm (3.31 in)
--
f - - _ .
Type
Wax pellet type
Starts to open 88
±
l.S·C (190
±
3°F)
Thermostat Fully opens 100°C (212·F)
Valve lift 8 mm (0.31 in)
Valve bore 31 mm (1.22 in)
Type Wax pellet type
Thermo
Fully closes 27
±
2·C (81
±
3.6·F)
valve
~~
Fully opens 25
±
2·C (77 :t 3.6·F)
Thermo-
ON 95 :t 2°C (203 :t 3.6·F)
switch
OFF 91 :t 2°C (196
±
3.6·F)
,I
Motor 120W or less
Electric fan
Fan dia. 280 mm (11.02 in)
Type
Cross flow, pressure type
AT & 4WI)..AT: 7.83 m' (84.3 sq ft)
• ·d.· ..
~
,
Total radiation area 4WD: 7.29 m' (78.4 sq
ft)
4.82 m' (51.9 sq ft)
\
I
Others: 5.90 m' (63.5 sq ft)
i
AT & 4WD-AT: 0.789 kW
(678 kcal/min, 2,690 BTU/min)
4WD: 0.715 kW
0.529 kW (455 kcal/min, 1,805 BTU/min)
(615 kcal/min, 2,440 BTU/min)
Others: 0.630 kW
Radiation capacity
(542 kcal/min, 2,151 BTU/min)
Radiator
{ • W.to< flo.,
4s2/min
(11.9 US gal/min, 9.9 Imp gal/min)
at • Temperature difference between
coolant and ambient atmosphere: 6s·C (l49·F)
• Air velocity: 8 m/sec (26 ft/sec)
Core dimensions mm (in)
SUBARU 1800 AT & 4WD-AT: 625 x 334 x 32 (24.61 x 13.15 x 1.26)
Others: 580 x 334 x 32 (22.83 x 13.15 x 1.26)
Radiator capacity 1.9£ (2.0 US qt, 1.7 Imp qt)
Pressure range in which cap valve is Above 88 :t 10 kPa (0.9:t 0.1 kg/em', 13 :t 1.4 psi)
open Below -4.9 to -10 kPa (-0.05 to -0.1 kg/em" -0.7 to -1.4 psi)
Fins Corrugated fin type