Alfa Romeo2004–2010Technical specifications

GT 1.8: Technical specifications

Workshop data for the 1.8-litre petrol (engine code 322.05). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Common faults & fixes

Summary

Match the engine code (322.05) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Alfa Romeo
Model: GT
Years: 2004–2010
Fuel: Petrol
Engine code: 322.05

Performance & efficiency

Power: 103 kW (140 hp)
Engine size: 1,747 cc
Cylinders: 4 · DOHC
Compression ratio: 10.3:1
Fuel system: Bosch

Fluids & capacities

Engine oil (with the filter): 4.4 litres

All 103 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/DOHC
Capacity (Fiscal) cc	1747
Compression ratio :1	10,3
Suitable for unleaded petrol	Yes
Minimum octane rating RON	95
Ignition system Make	Bosch
Ignition system Type	Motronic ME 7.3.1
Ignition system Description	Map-DI
Trigger location	Cam/Crankshaft
Fuel system Make	Bosch
Fuel system Type	Motronic ME7.3.1
Fuel system Description	MFI-s
Air metering Type	Mass
Combined ignition and fuel ECM	Yes
Diagnostic socket	Yes

Ignition system

Ignition coil supply voltage + with ballast V	12,0
Distributor (ECM) Make	(Bosch)

Firing order

The firing order for the Alfa Romeo GT 1.8 (2004–2010) is 1-3-4-2.

Firing order	1-3-4-2

Valve clearances

Valve clearances on the Alfa Romeo GT 1.8 (2004–2010) are hydraulic — they self-adjust, so no manual clearance figure applies.

Valve clearance - INLET mm	Hydraulic
Valve clearance - EXHAUST mm	Hydraulic

Engine oil & fluids

Engine oil

The Alfa Romeo GT 1.8 (2004–2010) takes 4.4 litres of engine oil with the filter.

See the reference table for the complete engine oil entries and their conditions.

Manual gearbox

The manual gearbox has a listed capacity of 2.0 litres.

See the reference table for the complete manual gearbox entries and their conditions.

Coolant

The listed total cooling-system capacity is 7.2 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	All temperatures
Engine oil grade SAE	5W-30 Synthetic
Engine oil classification OEM	Fiat 9.55535-M1
Engine oil classification API/ACEA	SL/A1
Ambient temperature range	-20°C➞
Engine oil grade SAE	10W-40 Synthetic
Engine oil classification API/ACEA	SL/A3
Ambient temperature range	All temperatures
Engine oil grade SAE	10W-60 Synthetic
Engine oil classification API/ACEA	SL/A3
Engine with filter(s) litres	4.4
Other lubricants and capacities
Manual transmission oil grade SAE	75W-85 Synthetic
Manual transmission oil classification	GL-4+
Manual transmission litres	2.0
Cooling system - total capacity litres	7.2
Brake fluid Type	DOT 4
Brake fluid litres	0.5
Power steering fluid Type	Dexron II
Power steering fluid litres	1.2

Brakes & wear limits

Brake disc thickness

Brake discs on the Alfa Romeo GT 1.8 (2004–2010) are replaced at a minimum thickness of 20,2 mm (ventilated) front and 9 mm rear.

Minimum disc thickness for replacement - ventilated Front	20,2 mm
Minimum disc thickness for replacement Rear	9 mm

Brake disc and drum dimensions

Minimum pad thickness Front	1,5 mm
Minimum pad thickness Rear	1,5 mm
Parking brake travel No. of notches	1-3

Service & electrical

Ignition timing

The ignition timing on the Alfa Romeo GT 1.8 (2004–2010) is not adjustable.

Ignition timing - basic BTDC °Engine/rpm	Not adjustable

Battery

The Alfa Romeo GT 1.8 (2004–2010) uses a 12 V, 60 Ah battery.

Battery V/RC(Ah)	12 (60)

Tuning and emissions

Ignition advance checks °Engine/rpm	ECM Controlled
Idle speed rpm	850±50 Not adjustable
Oil temperature °C	80
CO level at idle speed - tailpipe Vol. % CO	0,5 Max Not adjustable
HC level at idle speed ppm	100
CO2 level at idle speed Vol. % CO2	14,5-16
O2 level at idle speed Vol. % O2	0,1-0,5
Increased idle speed for CO test rpm	2500-2900
CO content at increased idle speed Vol. %	0,3
Lambda at increased idle λ	0,97-1,03

Starting and charging

Alternator output A/V/rpm	90/14/2000

Service checks and adjustments

Oil pressure bar/rpm	3,5-4,5/4000
Radiator cap bar	0,98
Thermostat opens °C	88±2

Fuel system

Regulated pressure with vacuum bar	3,3-3,7

Spark plugs

Spark plugs Original equipment	NGK
Spark plug Type	PMR7A
Spark plugs Make	NGK
Spark plug Type	PMR7A

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Alfa Romeo GT 1.8 (2004–2010) are tightened in 5 stages: 20 Nm, then 40 Nm, then 90°, then 90°, then a final 90°.

Cylinder head
Renew bolts	No
Tighten	20 Nm
Tighten	40 Nm
Tighten	90°
Tighten	90°
Tighten	90°

Other engine tightening torques
Cylinder head instructions	—
Main bearings Renew bolts/nuts	No
Main bearings Stage 1	24-26 Nm
Main bearings Stage 2	100°
Big end bearings Renew bolts/nuts	No
Big end bearings Stage 1	24-26 Nm
Big end bearings Stage 2	60°
Sump bolts	—
Sump bolts
Sump drain bolt	18-22 Nm
Flywheel/driveplate	144-176 Nm
Clutch pressure plate	25-31 Nm
Crankshaft pulley/damper centre bolt	209-231 Nm
Camshaft sprocket/gear	—
Camshaft sprocket
Camshaft carrier/cap	14-17 Nm
Camshaft/rocker cover	8-10 Nm
Inlet manifold to cylinder head	—
Inlet manifold to cylinder head
Exhaust manifold to cylinder head	23-28 Nm
Exhaust downpipe to manifold	23-28 Nm
Water pump	23-28 Nm
Spark plugs	—
Spark plugs
Engine coolant temperature (ECT) sensor	27-33 Nm
Lambda sensor (Oxygen)	41-50 Nm
Engine oil pressure switch	27-33 Nm
Chassis tightening torques
Front hub	67-74 Nm+62°
Rear hub	304-336 Nm
Steering track rod end	32-39 Nm
Brake disc to hub Front	10-14 Nm
Brake disc to hub Rear	10-14 Nm
Brake caliper to carrier Rear	50 Nm
Brake caliper/carrier to hub Rear	45-55 Nm
ABS sensor Front	7-9 Nm
ABS sensor Rear	7-9 Nm
Road wheels	—

Air conditioning

No. of AC service connectors	2
Air conditioning restrictor type	Expansion valve
Compressor clutch/magnetic coupling	Yes
Compressor variable displacement solenoid	No
Air conditioning refrigerant Type	R134a

Frequently asked questions

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

The firing order for the Alfa Romeo GT 1.8 (2004–2010) is 1-3-4-2.

How much oil does the Alfa Romeo GT 1.8 take?

The Alfa Romeo GT 1.8 (2004–2010) takes 4.4 litres of engine oil with the filter. See the reference table for the complete engine oil entries and their conditions.

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

Valve clearances on the Alfa Romeo GT 1.8 (2004–2010) are hydraulic — they self-adjust, so no manual clearance figure applies.

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

The cylinder head bolts on the Alfa Romeo GT 1.8 (2004–2010) are tightened in 5 stages: 20 Nm, then 40 Nm, then 90°, then 90°, then a final 90°.

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

The ignition timing on the Alfa Romeo GT 1.8 (2004–2010) is not adjustable.

What is the minimum brake disc thickness for the Alfa Romeo GT 1.8?

Brake discs on the Alfa Romeo GT 1.8 (2004–2010) are replaced at a minimum thickness of 20,2 mm (ventilated) front and 9 mm rear.