Specifications
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Gearbox
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Driveshafts, wheels and tyres
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Suspension
Horizontally opposed, flat 4 cylinder, water cooled, single overhead canshaft on each cylinder bank.
| Model | Engine |
| Alfasud saloon, 1972 - 1976 | 301.00 |
| Alfasud N, 1974 - 1982 | 301.00 |
| Alfasud L, 1975 - 1978 | 301.00 |
| Alfasud Super 1.2, 1977 - 1983 | 301.00 |
| Alfasud Super 1.2 3-doors. 1981 - 1982 | 301.02 |
| Alfasud Super 1.2 5-doors, 1982 - 1984 | 301.02 |
| Alfasud Super 1300,1977 - 1978 | 301.80 |
| Alfasud Super 1350, 1978 - 1982 | 301.60 |
| Alfasud Super 1350 3-doors, 1981 - 1984 | 301.64 |
| Alfasud Super 1350 5-doors, 1982 - 1983 | 301.68 |
| Alfasud Super 1.5, 1978 - 1982 | 301.24 |
| Alfasud Super 1.5 3-doors, 1981 - 1983 | 301.24 |
| Alfasud 1.5 Quadrifoglio Oro, 1982 - 1984 | 301.28 |
| Alfasud ti 1.2, 1973 - 1977 | 301.04 |
| Alfasud ti 1300, 1977 - 1978 | 301.80 |
| Alfasud ti 1350, 1978 - 1981 | 301.68 |
| Alfasud ti 1350 3-doors, 1981 - 1984 | 301.68 |
| Alfasud ti 1.5, 1978 - 1981 | 301.24 |
| Alfasud ti 1.5 3-doors, 1981 - 1984 | 301.28 |
| Alfasud ti 1.5 Quadrifoglio Verde, 1982 - 1984 | 301.46 |
| Engine 1186 c.c. (1200 nominal) | ||
| code number | 301.00, 301.02, 301.04 | |
| compression (301.02) | 8,8 : 1 | |
| maximum power (301.02) | 63 CV at 6000 rpm | |
| maximum torque (DIN) | ||
| 301.02 | 9.0 kgf m at 3200 rpm | |
| 301.04 | 9.2 kgf m at 3200 rpm | |
| bore | 80 mm. | |
| stroke | 59 mm. | |
| capacity | 1186 c.c. | |
| oil capacity | 4 litres | |
| oil type | multigrade SAE 10W/50 | |
| Engine 1286 c.c. (1300 nominal) | ||
| code number | 301.80, 301.84 | |
| compression | 9.0 : 1 | |
| maximum power (DIN) | ||
| 301.80 | 68 CV at 6000 rpm | |
| 301.84 | 76 CV at 6000 rpm | |
| maximum torque (DIN) | ||
| 301.80 | 9.9 kgf m at 3500 rpm | |
| 301.84 | 10.5 kgf m at 3500 rpm | |
| bore | 80 mm. | |
| stroke | 64 mm. | |
| capacity | 1286 c.c. | |
| oil capacity | 4 litres | |
| oil type | multigrade SAE 10W/50 | |
| Engine 1351 c.c. (1350 nominal) | ||
| code number | 301.60, 301.64, 301.68 | |
| compression | ||
| 301.60 and 301.64 | 9.0 : 1 | |
| 301.68 | 9.5 : 1 | |
| maximum power | ||
| 301.60 | 71 CV at 5800 rpm | |
| 301.64 | 79 CV at 6000 rpm | |
| 301.68 | 86 CV at 5800 rpm | |
| maximum torque (DIN) | ||
| 301.60 | 10.7 kgf m at 3000 rpm | |
| 301.64 | 11.3 kgf m at 3500 rpm | |
| 301.68 | 12.1 kgf m at 4000 rpm | |
| bore | 80 mm. | |
| stroke | 67.2 mm. | |
| capacity | 1350 c.c. | |
| oil capacity | 4 litres | |
| oil type | multigrade SAE 10W/50 | |
| Engine 1490 c.c. (1500 nominal) | ||
| code number | 301.24, 301.28, 301.46 | |
| compression | ||
| 301.24 | 9.0 : 1 | |
| 301.28 and 301.46 | 9.5 : 1 | |
| maximum power | ||
| 301.24 | 84 CV at 5800 rpm | |
| 301.28 | 95 CV at 5800 rpm | |
| 301.46 | 105 CV at 6000 rpm | |
| maximum torque (DIN) | ||
| 301.24 | 12.3 kgf m at 3500 rpm | |
| 301.28 | 13.3 kgf m at 4000 rpm | |
| 301.46 | 13.6 kgf m at 4000 rpm | |
| bore | 84 mm. | |
| stroke | 67.2 mm. | |
| capacity | 1490 c.c. | |
| oil capacity | 4 litres | |
| oil type | multigrade SAE 10W/50 | |
2. Cooling
| 1 | Electric fan | |
| 2 | Thermostatic valve | |
| 3 | Radiator | |
| 4 | Electric fan thermostat | |
| 5 | Drain plug (one for each bank of cylinders) | |
| 6 | Pump | |
| 7 | Header tank | |
| 8 | Cap with calibrated valve | |
| 9 | Thermostat switch for coolant temperature warning light | |
| 10 | Heater |
The engine cooling liquid is circulated roung the system on the
thermosyphon principle, assisted by a belt-driven impeller type pump.
The system is pressurised and sealed so that boiling will only occur
at abnormally high temperatures and so that there ¡s no loss of coolant.
As the coolant heats up it expands and flovs into the expansion
chamber, which is fitted with a blow-off valve should the pressure, and
therefore the temperature, get too great. No coolant should ever be
lost as air pressure and not water pressure is vented because the
expansion chamber is never more than about 1/3 filled with coolant.
As the coolant becomes cool it will flow back into the radiator under
the vacuum principle.
The circuit also incorporates a thermostatically controlled valve
which restricts the amount of water passing through the radiator until
the correct engine operating temperature is reached. This assists rapid
arming up and keeps the engine at a constant running temperature
''egardless of ambient conditions.
The principle of operation is as follows. The water heated by the
engine rises out of the cylinder heads towards the thermostat which, if
cold, is closed. It then diverts straight to the pump and thence back to
the engine via the heater (if open).
When the engine warms up a proportion of the warm water will pass
via the thermostat valve to the top of the radiator down through which it
will pass and cool. The pump will then draw the cold water from the
bottom of the radiator and pass it back to the engine (the pump has
two inlets). If the engine temperature should rise excessively the
thermostat valve will close off the by-pass outlet, thus directing all
water through the radiator.
It is important that the system is always sealed properly and that it
is filled with the correct coolant which ideally is 50% antifreeze (glycol)
and 50% distilled water. To maintain correct antifreeze properties and
to safeguard against internal damage to the aluminium cylinder heads
this mixture should be adhered to at all times. Because of the sealed
system this mixture is safe during the whole year in any climate.
The Alfasud utilises a thermostatically controlled electric fan for
cooling the radiator. The thermostatically controlled switch is in the
lower half of the radiator.
Thermostat
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Opening comences: |
||
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hot climate type |
81° to 85°C (178° to 185°F) | |
| cold climate | 88° to 92°C (190° to 198°F) | |
| temperate climate type | 84º to 88ºC (183° to 190°F) | |
| Fully | ||
|
hot climate type |
96°C (175°F) |
|
| cold climate | 106°C (223°F) | |
| temperate climate type | 98°C (208°F) | |
| Engine 1200 | ||
| 301.00, 301.02 | Dellorto FRDA 32E (alternative to Solex C32 DISA) | |
| 301.02 | Dellorto FRDA 32F, Solex C32 DIS40 | |
| 301.04 | Solex C32 EIES45, Weber 32 DIR 51/100, 32 DIR 51/250 or 32 DIR 51A/250 |
|
| Engine 1300 | ||
| 301.80 | Dellorto FRDA 32F, Solex C32 DIS40 | |
| 301.84 | Weber 32 DIR 61/100 or 32 DIR 61/250 | |
| Engine 1350 | ||
| 301.60 | Dellorto FRDA 32G, Solex C32 DIS41 | |
| 301.64 | Solex C32 EIES44, Weber 32 DIR 181/250 | |
| 301.68 (twin carbs) | Dellorto DRLA 36D (RH) and DRIA 36S (LH), Weber 36 IDF
45 or 45A (RH) and 36 IDF 44 or 44A (LH) |
|
| Engine 1500 | ||
| 301.24 | Solex C32 EIES43, Weber 32 DIR 71/250 | |
| 301.28 (twin carbs) | Dellorto DRLA 36D (RH) and DRLA 36S (LH), Weber 36 IDF 45 o 45A (RH) and 36 IDF 44 o 44A (LH) | |
| 301.46 (twin carbs) | Weber 36 IDF 53 (RH) and 36 IDF 52 (LH) | |
Carburator dellort (adjustement)
| Plugs | el fabricante recomienda los tipo multi-electrodo (Ej. Golden Lodge 2HL) | |
| periodo | Máximo para un periodo equivalente a 12.000 Km | |
| Orden de Ignition | Cilindros 1-3-2-4 (ver orden) | |
| Voltaje | 12 V. | |
| Distributor | ||
| tipe | Bosch JFU 4 | |
| angle a 5000 rpm | 60º - 64º | |
| apertura de contactos (estáticamente) | 0.35 mm mínimo | |
| presión de los contactos | 500 - 650 gr | |
| capacity del condensador | 0.2 mF | |
| tipo | Ducellier 4435/A | |
| ángulo a 5000 rpm | 54º - 60º | |
| apertura de contactos (estáticamente) | 0.35 - 0.45 mm | |
| presión de los contactos | 400 - 500 gr. | |
| capacity del condensador | 0.2 mF | |
| Tipo | monodisco en seco, con mando hidráulico |
| Bore | |
| exterior | 180 mm. |
| interior | 124 mm. |
| Bore cilindro principal | 19.05 mm. |
| Bore cilindro secundario | 25.4 mm. |
| Ajuste | sin ajuste |
| Líquido de frenos, tipo/especificación | SAE J 1703, FMVSS 166 DOT 3, o DOT 4 |
7. Driveshafts, wheels and tyres.
| 1 | Front brake pads |
| 2 | Piston |
| 3 | Bleed screw |
| 4 | Inboard piston operating levers |
| 5 | Handbrake cable |
| 6 | Emegency and handbrake lever |
| 7 | Rear brake disc |
| 8 | Piston |
| 9 | Rear brake pads |
| 10 | Rear bled screw |
| 11 | Stop lamp |
| 12 | Brake pressure regulator spring |
| 13 | Brake presure regulator |
| 14 | Preloading mechanism for brake pressure regulator spring |
| 15 | Brake master cylinder |
| 16 | Brake and clutch fluid reservoir |
| 17 | Sensor for low level of brake fluid |
| 18 | Brake pedal |
| 19 | Stop lamp switch |
| 20 | Warning light for low level of brake fluid |
The Alfasud braking system is somewhat unconvencional. It consists of a dual-line hydraulic system, there being two independent circuits for the front brakes and one for the rear brakes. The front brakes consist of discs and adjustable calipers mounted in-board, at the inner end of the driveshafts, on the gearbox. A cable operated handbrake system also operates from the front calipers. The rear brakes are also discs and calipers but this time affixed to the outer ends of the rear beam axle in a more conventional manner. A brake pressure limiter valve is fitted or axle. An explanatory diagram illustrates the system. The system works well but requires a certain amount of maintenance, over and above that which is normal, to achieve longevity. Working on the front discs and calipers is very difficult because of the cramped working conditions when the engine and gearbox are fitted in the car. For this reason it is wise to check the front brakes when the engine and gearbox are removed for other reasons.
Discs dimensions
| Alfa | periodo | ant | post | disc | dimensiones | agujeros | ref. original | pads | |
|
Alfasud all models |
71 | 06/82 | ■ | 0110 | 258x10x11 | 4 | 60718737 | 0099 | |
| ■ | 0120 | 233x9x78 | 4 | 60750518 | 0100 | ||||
|
Alfasud all models |
83 | 84 | ■ | 0130 | 258x10x21 | 6 | 60703237 | 0099 | |
| Discs dimensions of Alfa Sprint | |||||||||
|
Sprint 1.3-1.5 |
77 | 86 | ■ | 0110 | 258x10x11 | 4 | 60718737 | 0099 | |
| ■ | 0130 | 258x10x21 | 6 | 60703237 | 0099 | ||||
| ■ | 0120 | 233x9x78 | 4 | 60750518 | 0100 | ||||
|
Sprint 1.3-1.5 |
87 | 89 | ■ | 0091 | 239x12x46 | 4 | 60501453 | 0099 | |
|
Sprint 1.3-1.5 |
87 | 89 | ■ | 0150 | 239x22x46 | 4 | 60514881 | 0099 | |
|
Front disc for all Alfasud until 1982 |
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Front disc for all Alfasud from 1982 |
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9. Electrical system
FUSES
| 1 | 8A | Headlamp dipped beam (RH) |
| 2 | 8A | Headlamp dipped beam (LH) and rear foglamp |
| 3 | 8A | Headlamp main beam (RH) |
| 4 | 8A | Headlamp main beam (LH) and warning light |
| 5 | 8A | Sidelights (LH front and RH rear) and number plate lamp (LH) |
| 6 | 8A | Sidelights (RH front and LH rear) and number plate lamp (RH) |
| 7 | 16A | Engine cooling fan, digital clock, idle cut-off solenoid |
| 8 | 16A | Reversing lamp, windscreen wash/wiper, heater fan |
| 9 | 16A | Heater rear window, direction indicators, stop-lights, interior light |
| 10 | 16A | Horn, cigarette lighter |
| Wiring diagram - Alfasud |
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| Wiring diagram Alfasud Ti (until 1980) |
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| Wiring Diagram Alfasud 81-84 |
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