Alfa Romeo1988–1992Technical specifications

75 2.4 Turbo: Technical specifications

Workshop data for the 2.4-litre diesel (engine code VM81A). Covers engine, fluids, brakes, service, torques and air conditioning: the figures to check before a job or a parts order.

Summary

Match the engine code (VM81A) to the vehicle before ordering parts or applying these figures.

Vehicle specifications

Overview

Make: Alfa Romeo
Model: 75
Years: 1988–1992
Fuel: Diesel
Engine code: VM81A

Performance & efficiency

Power: 81 kW (110 hp)
Engine size: 2,393 cc
Cylinders: 4 · OHV
Compression ratio: 22.0:1

Fluids & capacities

Engine oil (with the filter): 6.0 litres

All 90 specifications below

Engine & identification

Vehicle identification

No. of cylinders Type	4/OHV
Capacity cc	2393
Compression ratio :1	22,0

Injection system

Fuel/injection pump assembly Make	Bosch
Fuel/injection pump assembly Type	VE 4/10F
Fuel/injection pump assembly Part No.	0 460 404 042
Pump type	Rotary
Fuel feed/lift pump delivery pressure bar	0,2
Injector nozzle Make	Bosch
Nozzle and holder assembly Part No.	0 432 297 047
Nozzle opening pressure - new/used bar	150/135

Injection sequence

The injection sequence for the Alfa Romeo 75 2.4 Turbo (1988–1992) is 1-3-4-2.

Injection sequence	1-3-4-2

Valve clearances

Valve clearances for the Alfa Romeo 75 2.4 Turbo (1988–1992) are 0,30 mm inlet and 0,30 mm exhaust, measured cold.

Valve clearance - INLET mm	0,30 cold
Valve clearance - EXHAUST mm	0,30 cold

Engine oil & fluids

Engine oil

The Alfa Romeo 75 2.4 Turbo (1988–1992) takes 6.0 litres of engine oil with the filter.

A listed engine oil option is SAE 15W-40 for moderate climates, with API/ACEA classification CF/B2.

A listed engine oil option is SAE 10W-40 as an alternative for moderate climates, with API/ACEA classification CF/B3.

Manual gearbox

The manual gearbox has a listed capacity of 2.1 litres. The specified oil is SAE 75W-90.

Coolant

The listed total cooling-system capacity is 10.0 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range	Moderate climate
Engine oil grade SAE	15W-40
Engine oil classification API/ACEA	CF/B2
Ambient temperature range	Moderate climate alternative
Engine oil grade SAE	10W-40
Engine oil classification API/ACEA	CF/B3
Engine with filter(s) litres	6.0
Other lubricants and capacities
Manual transmission oil grade SAE	75W-90
Manual transmission litres	2.1
Cooling system - total capacity litres	10.0
Power steering fluid Type	Dexron
Power steering fluid litres	0.8

Brakes & wear limits

Brake disc thickness

Brake discs on the Alfa Romeo 75 2.4 Turbo (1988–1992) are replaced at a minimum thickness of 9 mm (solid) or 20 mm (ventilated) front and 8 mm rear.

Minimum disc thickness for replacement - solid Front	9 mm
Minimum disc thickness for replacement - ventilated Front	20 mm
Minimum disc thickness for replacement Rear	8 mm

Brake disc and drum dimensions

Disc runout Front	0,15 mm
Disc runout Rear	0,15 mm
Minimum pad thickness Front	1,5 mm
Minimum pad thickness Rear	1,5 mm
Parking brake travel No. of notches	1-3

Service & electrical

Battery

The Alfa Romeo 75 2.4 Turbo (1988–1992) uses a 12 V, 72 Ah battery (reserve capacity 110 minutes).

Battery V/RC(Ah)	12/110 (72)

Glow plugs

Glow plugs for the Alfa Romeo 75 2.4 Turbo (1988–1992): Beru 657 MJ, Bosch 0 250 201 012, Champion CH70 and Lucas/CAV HDS267.

Glow plug nominal rating V/A	11/13
Glow plug activation time secs	10 Max
Glow plug - part no. Beru	657 MJ
Glow plug - part no. Bosch	0 250 201 012
Glow plug - part no. Champion	CH70
Glow plug - part no. Lucas/CAV	HDS267

Tuning and emissions

Plunger travel (pump) mm ABDC	0,78-0,80
Crankshaft position (n = ATDC) °BTDC	—
Adjusting method Engine/Pump	Pointer/Dial gauge
Dynamic timing v = BTDC, n = ATDC	v
- Time Trac Stanadyne, Snap-on °/rpm	10/850
Idle speed rpm	800-850
Rated no load speed rpm	4800-4830
Oil temperature °C	80
Idle speed - for smoke test rpm	800-850
Governed speed range - for smoke test rpm	4800-4830
Maximum time at governed speed secs	1,0
Test mode A/B	B
Probe type 1/2	1
Conditioning Accelerations/rpm	2-3
Smoke opacity - EU limit m-1 (%)	3,00 (73)
Smoke opacity - homologation value m-1 (%)	1,70 (52)

Starting and charging

Starter motor Make	Bosch
Maximum cranking amps A	194-238
Alternator Make	Bosch
Alternator Type	0 120 489 212
Alternator output A/V/rpm	65/14/3000
Regulated voltage V	13,7-14,2

Service checks and adjustments

Compression pressure bar	21,5
Oil pressure bar/rpm	3,4-5,9/-
Radiator cap bar	0,90-1,10
Thermostat opens °C	80
Drive belt size - alternator mm	9,5x1090

Tightening torques

Cylinder head
Cylinder head instructions	—
View more information	—
Renew bolts	No
Other engine tightening torques
Big end bearings Renew bolts/nuts	No
Big end bearings Stage 1	40 Nm
Big end bearings Stage 2	75-84 Nm
Oil pump to cylinder block	25 Nm
Sump bolts	10 Nm
Sump drain bolt	78 Nm
Flywheel/driveplate	108 Nm
Crankshaft pulley/damper centre bolt	147-157 Nm
Inlet manifold to cylinder head	30 Nm
Exhaust manifold to cylinder head	30 Nm
Injector/clamp	27 Nm
Injector pipe unions	15-20 Nm
Fuel/injection pump sprocket/gear	88 Nm
Chassis tightening torques
Rear hub	265-324 Nm
Steering track rod end	45-55 Nm
Brake disc to hub Front	12 Nm
Brake caliper/carrier to hub Front	80 Nm
Brake disc to hub Rear	12 Nm
Road wheels	98 Nm

Air conditioning

Air conditioning refrigerant Type	R12
Air conditioning refrigerant quantity grams	900
Air conditioning oil Type	Suniso 5GS

Frequently asked questions

What is the injection sequence of the Alfa Romeo 75 2.4 Turbo?

The injection sequence for the Alfa Romeo 75 2.4 Turbo (1988–1992) is 1-3-4-2.

What glow plugs does the Alfa Romeo 75 2.4 Turbo use?

Glow plugs for the Alfa Romeo 75 2.4 Turbo (1988–1992): Beru 657 MJ, Bosch 0 250 201 012, Champion CH70 and Lucas/CAV HDS267.

How much oil does the Alfa Romeo 75 2.4 Turbo take?

The Alfa Romeo 75 2.4 Turbo (1988–1992) takes 6.0 litres of engine oil with the filter. A listed engine oil option is SAE 15W-40 for moderate climates, with API/ACEA classification CF/B2. A listed engine oil option is SAE 10W-40 as an alternative for moderate climates, with API/ACEA classification CF/B3.

What are the valve clearances for the Alfa Romeo 75 2.4 Turbo?

Valve clearances for the Alfa Romeo 75 2.4 Turbo (1988–1992) are 0,30 mm inlet and 0,30 mm exhaust, measured cold.

What is the minimum brake disc thickness for the Alfa Romeo 75 2.4 Turbo?

Brake discs on the Alfa Romeo 75 2.4 Turbo (1988–1992) are replaced at a minimum thickness of 9 mm (solid) or 20 mm (ventilated) front and 8 mm rear.

What battery does the Alfa Romeo 75 2.4 Turbo use?

The Alfa Romeo 75 2.4 Turbo (1988–1992) uses a 12 V, 72 Ah battery (reserve capacity 110 minutes).