Alfa Romeo1973–1980Technical specifications

Alfasud 1.2: Technical specifications

Workshop data for the 1.2-litre petrol (engine code 301.02). Covers engine, fluids, service and torques: the figures to check before a job or a parts order.

Summary

Match the engine code (301.02) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Alfa Romeo
Model: Alfasud
Years: 1973–1980
Fuel: Petrol
Engine code: 301.02

Performance & efficiency

Power: 46 kW (63 hp)
Engine size: 1,186 cc
Cylinders: 4 · OHC
Compression ratio: 8.8:1
Fuel system: Solex/Dellorto

Fluids & capacities

Engine oil (with the filter): 4.0 litres

All 80 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/OHC
Capacity (Fiscal) cc	1186 (1178)
Compression ratio :1	8,8
Suitable for unleaded petrol	No
Minimum octane rating RON	98
Ignition system Make	Bosch
Ignition system Type	SZ
Ignition system Description	CB
Fuel system Make	Solex/Dellorto
Fuel system Type	32 DIS/FRDA32
Fuel system Description	Carb-2V

Ignition system

Ignition coil Make	Bosch
Ignition coil Type	0 221 119 008
Ignition coil supply voltage + with ballast V	11,0
Primary resistance Ohm	2,9-3,4
Secondary resistance Ohm	9500-13500
Distributor (ECM) Make	Bosch
Distributor (ECM) No.	0 231 168 014
Contact breaker gap/trigger air gap mm	0,4
Dwell angle °(%)	60-64 (67-71)

Firing order

The firing order for the Alfa Romeo Alfasud 1.2 (1973–1980) is 1-3-2-4.

Firing order	1-3-2-4

Valve clearances

Valve clearances for the Alfa Romeo Alfasud 1.2 (1973–1980) are 0,40 mm inlet and 0,50 mm exhaust, measured cold.

Valve clearance - INLET mm	0,40 cold
Valve clearance - EXHAUST mm	0,50 cold

Engine oil & fluids

Engine oil

The Alfa Romeo Alfasud 1.2 (1973–1980) takes 4.0 litres of engine oil with the filter.

A listed engine oil option is SAE 10W-50 for moderate climates, with API/ACEA classification SE.

A listed engine oil option is SAE 15W-50 as an alternative for moderate climates.

Manual gearbox

The manual gearbox has a listed capacity of 3.5 litres. The specified oil is SAE 80W-90.

Coolant

The listed total cooling-system capacity is 7.3 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	Moderate climate
Engine oil grade SAE	10W-50
Engine oil classification API/ACEA	SE
Ambient temperature range	Moderate climate alternative
Engine oil grade SAE	15W-50
Engine with filter(s) litres	4.0
Other lubricants and capacities
Manual transmission oil grade SAE	80W-90
Manual transmission litres	3.5
Cooling system - total capacity litres	7.3

Service & electrical

Ignition timing

Basic ignition timing for the Alfa Romeo Alfasud 1.2 (1973–1980) is 8°±1° BTDC at 900 rpm.

Ignition timing	Without vacuum
Ignition timing - basic BTDC °Engine/rpm	8±1/900

Battery

The Alfa Romeo Alfasud 1.2 (1973–1980) uses a 12 V, 36 Ah battery (reserve capacity 60 minutes).

Battery V/RC(Ah)	12/60 (36)

Spark plugs

The Alfa Romeo Alfasud 1.2 (1973–1980) uses Lodge 25HL spark plugs with a 0,6 mm electrode gap.

Spark plugs Original equipment	Lodge
Spark plug Type	25HL
Electrode gap mm	0,6
Spark plugs Make	Bosch
Spark plug Type	W7DC
Electrode gap mm	0,7
Spark plugs Make	Champion
Spark plug Type	RN6YC
Electrode gap mm	0,6
Spark plugs Make	NGK
Spark plug Type	B7ES
Electrode gap mm	0,6

Tuning and emissions

Ignition advance	Without vacuum and basic timing
Ignition advance checks °Engine/rpm	21-23/2000
Ignition advance checks °Engine/rpm	20-24/3000
Ignition advance checks °Engine/rpm	24-28/3500
Vacuum check	Ignition timing advances
Vacuum range °Engine	11-15
Vacuum starts mbar	53-87
Vacuum ends mbar	375
Idle speed rpm	900-1000
Oil temperature °C	70
CO level at idle speed - tailpipe Vol. % CO	3,5 Max
HC level at idle speed ppm	500
CO2 level at idle speed Vol. % CO2	13-16
O2 level at idle speed Vol. % O2	0,5-2,0

Starting and charging

Starter motor Make	Bosch
Starter motor Type	0 001 211 215
Minimum starting voltage V	10,0
Maximum cranking amps A	97-119
Alternator Make	Bosch
Alternator Type	0 120 489 720
Alternator output A/V/rpm	45/14/2000
Voltage regulator Type	0 190 601 006
Regulated voltage V	13,9-14,8

Service checks and adjustments

Oil pressure bar/rpm	4,5 Max
Thermostat opens °C	82
Drive belt size - alternator mm	9,5x888
Drive belt tension - alternator/PAS/AC mm	15

Fuel system

Fuel pump delivery pressure bar	0,4

Tightening torques

Other engine tightening torques
Cylinder head instructions	—
Big end bearings Stage 1	22-24 Nm
Big end bearings Stage 2	44-49 Nm
Flywheel/driveplate	96-107 Nm
Spark plugs	25-35 Nm
Chassis tightening torques
Road wheels	65-80 Nm

Frequently asked questions

What is the firing order of the Alfa Romeo Alfasud 1.2?

The firing order for the Alfa Romeo Alfasud 1.2 (1973–1980) is 1-3-2-4.

What spark plugs does the Alfa Romeo Alfasud 1.2 use?

The Alfa Romeo Alfasud 1.2 (1973–1980) uses Lodge 25HL spark plugs with a 0,6 mm electrode gap.

How much oil does the Alfa Romeo Alfasud 1.2 take?

The Alfa Romeo Alfasud 1.2 (1973–1980) takes 4.0 litres of engine oil with the filter. A listed engine oil option is SAE 10W-50 for moderate climates, with API/ACEA classification SE. A listed engine oil option is SAE 15W-50 as an alternative for moderate climates.

What are the valve clearances for the Alfa Romeo Alfasud 1.2?

Valve clearances for the Alfa Romeo Alfasud 1.2 (1973–1980) are 0,40 mm inlet and 0,50 mm exhaust, measured cold.

What is the ignition timing for the Alfa Romeo Alfasud 1.2?

Basic ignition timing for the Alfa Romeo Alfasud 1.2 (1973–1980) is 8°±1° BTDC at 900 rpm.

What battery does the Alfa Romeo Alfasud 1.2 use?

The Alfa Romeo Alfasud 1.2 (1973–1980) uses a 12 V, 36 Ah battery (reserve capacity 60 minutes).