Alfa Romeo1979–1981Technical specifications

Giulietta 1.8: Technical specifications

Workshop data for the 1.8-litre petrol (engine code 016.78). Covers engine, fluids, service and torques: the figures to check before a job or a parts order.

Summary

Match the engine code (016.78) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Alfa Romeo
Model: Giulietta
Years: 1979–1981
Fuel: Petrol
Engine code: 016.78

Performance & efficiency

Power: 90 kW (122 hp)
Engine size: 1,779 cc
Cylinders: 4 · OHC
Compression ratio: 9.0:1
Fuel system: Weber

Fluids & capacities

Engine oil (with the filter): 5.9 litres

All 89 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/OHC
Capacity (Fiscal) cc	1779 (1767)
Compression ratio :1	9,0
Suitable for unleaded petrol	Yes
Minimum octane rating RON	98/95
Ignition system Make	Marelli
Ignition system Type	SZ
Ignition system Description	CB
Fuel system Make	Weber
Fuel system Type	40 DHLA
Fuel system Description	Carb-2V

Ignition system

Ignition coil Make	Marelli
Ignition coil Type	BE200H
Ignition coil supply voltage + with ballast V	10,0
Primary resistance Ohm	2,8-3,4
Distributor (ECM) Make	Marelli
Distributor (ECM) No.	S 168 BX
Contact breaker gap/trigger air gap mm	0,4
Dwell angle °(%)	52-58 (58-64)

Firing order

The firing order for the Alfa Romeo Giulietta 1.8 (1979–1981) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances for the Alfa Romeo Giulietta 1.8 (1979–1981) are 0,50 mm inlet and 0,55 mm exhaust, measured cold.

Valve clearance - INLET mm	0,50 cold
Valve clearance - EXHAUST mm	0,55 cold

Engine oil & fluids

Engine oil

The Alfa Romeo Giulietta 1.8 (1979–1981) takes 5.9 litres of engine oil with the filter. The specified engine oil grade is SAE 10W-50 for moderate climates, with API/ACEA classification SE.

Manual gearbox

The manual gearbox has a listed capacity of 2.9 litres. The specified oil is SAE 85W-90.

Coolant

The listed total cooling-system capacity is 8.0 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
Engine with filter(s) litres	5.9
Other lubricants and capacities
Manual transmission oil grade SAE	85W-90
Manual transmission litres	2.9
Differential rear litres	3.0
Cooling system - total capacity litres	8.0

Service & electrical

Ignition timing

Basic ignition timing for the Alfa Romeo Giulietta 1.8 (1979–1981) is 7°±1° BTDC at 850 rpm.

Ignition timing	Without vacuum
Ignition timing - basic BTDC °Engine/rpm	7±1/850
Ignition timing - alternative °Engine/rpm	95=4±1/850

Battery

The Alfa Romeo Giulietta 1.8 (1979–1981) uses a 12 V, 50 Ah battery (reserve capacity 70 minutes).

Battery V/RC(Ah)	12/70 (50)

Spark plugs

The Alfa Romeo Giulietta 1.8 (1979–1981) uses Lodge 2HL spark plugs with a 0,45 mm electrode gap.

Spark plugs Original equipment	Lodge
Spark plug Type	2HL
Electrode gap mm	0,45
Spark plugs Make	Beru
Spark plug Type	14-7DU
Electrode gap mm	0,8
Spark plugs Make	Bosch
Spark plug Type	W7DC
Electrode gap mm	0,7
Spark plugs Make	Champion
Spark plug Type	N6YC
Electrode gap mm	0,7
Spark plugs Make	NGK
Spark plug Type	B7ES
Electrode gap mm	0,7

Tuning and emissions

Ignition advance	Without vacuum and basic timing
Ignition advance checks °Engine/rpm	35-39/5100
Ignition advance checks °Engine/rpm	10-16/2000
Ignition advance checks °Engine/rpm	27-33/5100
Vacuum check	Ignition timing advances
Vacuum range °Engine	13-19
Vacuum starts mbar	93
Vacuum ends mbar	280
Idle speed rpm	850-1000
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	Paris-Rhone
Starter motor Type	DBE
Minimum starting voltage V	9,3
Maximum cranking amps A	135-165
Alternator Make	SEV Marchal
Alternator Type	A14/55A
Alternator output A/V/rpm	55/14/2500
Voltage regulator Type	721 360 10
Regulated voltage V	13,8-14,2

Service checks and adjustments

Oil pressure bar/rpm	3,5-5,0
Thermostat opens °C	82
Drive belt size - alternator mm	9,5x813
Drive belt tension - alternator/PAS/AC mm	10

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Alfa Romeo Giulietta 1.8 (1979–1981) are tightened in 3 stages: 80 Nm, then 85 Nm, then a final 90 Nm.

Cylinder head
Tighten	80 Nm
Tighten	Run engine 15 minutes
Tighten	85 Nm
Tighten	Run engine 1000km
Tighten	Loosen
Tighten	90 Nm

Other engine tightening torques
Cylinder head instructions	—
Main bearings Stage 1	25 Nm
Main bearings Stage 2	50 Nm
Big end bearings Stage 1	17 Nm
Big end bearings Stage 2	35 Nm
Flywheel/driveplate	115 Nm
Spark plugs	30 Nm
Chassis tightening torques
Road wheels	70 Nm

Frequently asked questions

What is the firing order of the Alfa Romeo Giulietta 1.8?

The firing order for the Alfa Romeo Giulietta 1.8 (1979–1981) is 1-3-4-2.

What spark plugs does the Alfa Romeo Giulietta 1.8 use?

The Alfa Romeo Giulietta 1.8 (1979–1981) uses Lodge 2HL spark plugs with a 0,45 mm electrode gap.

How much oil does the Alfa Romeo Giulietta 1.8 take?

The Alfa Romeo Giulietta 1.8 (1979–1981) takes 5.9 litres of engine oil with the filter. The specified engine oil grade is SAE 10W-50 for moderate climates, with API/ACEA classification SE.

What are the valve clearances for the Alfa Romeo Giulietta 1.8?

Valve clearances for the Alfa Romeo Giulietta 1.8 (1979–1981) are 0,50 mm inlet and 0,55 mm exhaust, measured cold.

What is the cylinder head torque for the Alfa Romeo Giulietta 1.8?

The cylinder head bolts on the Alfa Romeo Giulietta 1.8 (1979–1981) are tightened in 3 stages: 80 Nm, then 85 Nm, then a final 90 Nm.

What is the ignition timing for the Alfa Romeo Giulietta 1.8?

Basic ignition timing for the Alfa Romeo Giulietta 1.8 (1979–1981) is 7°±1° BTDC at 850 rpm.