Alfa Romeo1980–1988Technical specifications

GTV 6 2.5: Technical specifications

Workshop data for the 2.5-litre petrol (engine code 016.46). Covers engine, fluids, service and torques: the figures to check before a job or a parts order.

Summary

Match the engine code (016.46) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Alfa Romeo
Model: GTV 6
Years: 1980–1988
Fuel: Petrol
Engine code: 016.46

Performance & efficiency

Power: 116 kW (158 hp)
Engine size: 2,492 cc
Cylinders: 6 · OHC
Compression ratio: 9.0:1
Fuel system: Bosch

Fluids & capacities

Engine oil (with the filter): 6.0 litres

All 79 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	6/OHC
Capacity (Fiscal) cc	2492
Compression ratio :1	9,0
Suitable for unleaded petrol	Yes
Minimum octane rating RON	95
Ignition system Make	Bosch
Ignition system Type	TSZ-i
Ignition system Description	Trans-i
Fuel system Make	Bosch
Fuel system Type	L-Jetronic
Fuel system Description	MFI-i

Ignition system

Ignition coil Make	Bosch
Ignition coil Type	0 221 122 015
Ignition coil supply voltage + with ballast V	11,0
Primary resistance Ohm	0,7-1,0
Secondary resistance Ohm	6700-9600
Distributor (ECM) Make	Bosch
Distributor (ECM) No.	0 22237 301 008
Contact breaker gap/trigger air gap mm	0,5-0,6

Firing order

The firing order for the Alfa Romeo GTV 6 2.5 (1980–1988) is 1-4-2-5-3-6.

Firing order	1-4-2-5-3-6

Valve clearances

Valve clearances for the Alfa Romeo GTV 6 2.5 (1980–1988) are 0,50 mm inlet and 0,25 mm exhaust, measured cold.

Valve clearance - INLET mm	0,50 cold
Valve clearance - EXHAUST mm	0,25 cold

Engine oil & fluids

Engine oil

The Alfa Romeo GTV 6 2.5 (1980–1988) takes 6.0 litres of engine oil with the filter.

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

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 2.6 litres. The specified oil is SAE 85W-90.

Coolant

The listed total cooling-system capacity is 12.0 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	SF
Ambient temperature range	Moderate climate alternative
Engine oil grade SAE	15W-50
Engine with filter(s) litres	6.0
Other lubricants and capacities
Manual transmission oil grade SAE	85W-90
Manual transmission litres	2.6
Differential oil grade - rear SAE	90W
Differential rear litres	1.5
Cooling system - total capacity litres	12.0

Service & electrical

Ignition timing

Basic ignition timing for the Alfa Romeo GTV 6 2.5 (1980–1988) is 7°±1° BTDC at 925 rpm.

Ignition timing - basic BTDC °Engine/rpm	7±1/925

Spark plugs

The Alfa Romeo GTV 6 2.5 (1980–1988) uses Lodge 2HL-E spark plugs with a 0,7 mm electrode gap.

Spark plugs Original equipment	Lodge
Spark plug Type	2HL-E
Electrode gap mm	0,7
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	RN11YC
Electrode gap mm	0,8
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	2/1200
Ignition advance checks °Engine/rpm	16-22/2000
Ignition advance checks °Engine/rpm	24-28/4200
Idle speed rpm	850-1000
Oil temperature °C	60
CO level at idle speed - tailpipe Vol. % CO	0,5-1,5
CO level at idle speed - tailpipe (Cat) Vol. % CO	1,5 Max
HC level at idle speed ppm	300
HC level at idle - alternative ppm	Cat=100
CO2 level at idle speed Vol. % CO2	13-16
O2 level at idle speed Vol. % O2	0,5-2,0

Starting and charging

Battery V/RC(Ah)	/110 (66)
Maximum cranking amps A	178-218
Alternator output A/V/rpm	65/14/2000
Voltage regulator Type	0 120 489 906
Regulated voltage V	13,7-14,5

Service checks and adjustments

Oil pressure bar/rpm	4-6/5500
Drive belt size - alternator mm	9,5x925
Drive belt size - PAS/AC mm	9,5x875

Fuel system

System pressure bar	2,26-2,65
Regulated pressure with vacuum bar	1,20-2,15

Tightening torques

Other engine tightening torques
Cylinder head instructions	—
Main bearings Stage 1	38-39 Nm
Main bearings Stage 2	76-78 Nm
Big end bearings Stage 1	23-25 Nm
Big end bearings Stage 2	46-51 Nm
Flywheel/driveplate	113 Nm
Crankshaft pulley/damper centre bolt	235 Nm
Spark plugs	25-34 Nm
Chassis tightening torques
Road wheels	90-110 Nm

Frequently asked questions

What is the firing order of the Alfa Romeo GTV 6 2.5?

The firing order for the Alfa Romeo GTV 6 2.5 (1980–1988) is 1-4-2-5-3-6.

What spark plugs does the Alfa Romeo GTV 6 2.5 use?

The Alfa Romeo GTV 6 2.5 (1980–1988) uses Lodge 2HL-E spark plugs with a 0,7 mm electrode gap.

How much oil does the Alfa Romeo GTV 6 2.5 take?

The Alfa Romeo GTV 6 2.5 (1980–1988) takes 6.0 litres of engine oil with the filter. A listed engine oil option is SAE 10W-50 for moderate climates, with API/ACEA classification SF. A listed engine oil option is SAE 15W-50 as an alternative for moderate climates.

What are the valve clearances for the Alfa Romeo GTV 6 2.5?

Valve clearances for the Alfa Romeo GTV 6 2.5 (1980–1988) are 0,50 mm inlet and 0,25 mm exhaust, measured cold.

What is the ignition timing for the Alfa Romeo GTV 6 2.5?

Basic ignition timing for the Alfa Romeo GTV 6 2.5 (1980–1988) is 7°±1° BTDC at 925 rpm.