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Land Rover   ·   1987–1989

Range Rover Classic 3.5: Technical specifications

Technical specifications (1987–1989)

The Land Rover Range Rover Classic (73-95) 3.5 is the 3.5-litre petrol variant, engine code 25D/23D/24D, built from 1987 to 1989. Quick answers and key figures below, then the full workshop tables.

Updated

Engine code25D/23D/24D
Power110 kW (150 hp)@ 4750 rpm
FuelPetrol
Cylinders8
Oil capacity5,7litres · with the filter

Engine & identification

Vehicle identification

No. of cylinders Type8/OHV
Capacity (Fiscal) cc3528 (3470)
Compression ratio :18,13
Suitable for unleaded petrolYes
Minimum octane rating RON98/95
Ignition system TypeTSZ-i
Ignition system DescriptionTrans-i
Trigger locationDistributor
Fuel system MakeLucas
Fuel system TypeL-EFI
Fuel system DescriptionMFI-s
Air metering TypeFlow
Combined ignition and fuel ECMNo
Diagnostic socketYes

Ignition system

Ignition coil MakeLucas
Ignition coil Type32C5
Ignition coil supply voltage + with ballast V11,0
Distributor (ECM) MakeLucas
Distributor (ECM) No.42608/42649
Contact breaker gap/trigger air gap mm0,20-0,35

Firing order

The firing order for the Land Rover Range Rover Classic 3.5 (1987–1989) is 1-8-4-3-6-5-7-2.

Firing order1-8-4-3-6-5-7-2

Valve clearances

Valve clearances on the Land Rover Range Rover Classic 3.5 (1987–1989) are hydraulic — they self-adjust, so no manual clearance figure applies.

Valve clearance - INLET mmHydraulic
Valve clearance - EXHAUST mmHydraulic

Engine oil & fluids

Engine oil

The Land Rover Range Rover Classic 3.5 (1987–1989) takes 5.7 litres of engine oil with the filter.

A listed engine oil option is SAE 5W-30 for cold climates, with API/ACEA classification SG/A2.

A listed engine oil option is SAE 10W-30 for moderate climates, with API/ACEA classification SG/A2.

A listed engine oil option is SAE 15W-40 as an alternative for moderate climates, with API/ACEA classification SG/A2.

A listed engine oil option is SAE 20W-50 for hot climates, with API/ACEA classification SG/A2.

Manual gearbox

The manual gearbox has a listed capacity of 2.7 litres. The specified oil is Dexron IID.

Coolant

The listed total cooling-system capacity is 11.4 litres.

Grades, filling conditions and capacities

Lubricants and capacities — complete reference
Engine oil options
Ambient temperature range Cold climate
Engine oil grade SAE 5W-30
Engine oil classification API/ACEA SG/A2
Ambient temperature range Moderate climate
Engine oil grade SAE 10W-30
Engine oil classification API/ACEA SG/A2
Ambient temperature range Moderate climate alternative
Engine oil grade SAE 15W-40
Engine oil classification API/ACEA SG/A2
Ambient temperature range Hot climate
Engine oil grade SAE 20W-50
Engine oil classification API/ACEA SG/A2
Engine with filter(s) litres 5.7
Other lubricants and capacities
Manual transmission oil grade SAE Dexron IID
Manual transmission litres 2.7
Automatic transmission fluid Type Dexron II
Automatic transmission (dry fill) litres 9.1
Differential front/AT litres 1.7
Differential oil grade - rear SAE 90W
Differential rear litres 2.3
Cooling system - total capacity litres 11.4

Brakes & wear limits

Brake disc thickness

Front brake discs on the Land Rover Range Rover Classic 3.5 (1987–1989) are replaced at a minimum thickness of 12 mm (solid) or 22 mm (ventilated).

Minimum disc thickness for replacement - solid Front12 mm
Minimum disc thickness for replacement - ventilated Front22 mm

Brake disc and drum dimensions

Disc runout Front0,15 mm
Disc runout Rear0,15 mm
Minimum pad thickness Front3 mm
Minimum pad thickness Rear3 mm
Parking brake travel No. of notches3-4

Bar lengths use a square-root scale so small and large values stay readable.

Service & electrical

Battery

The Land Rover Range Rover Classic 3.5 (1987–1989) uses a 12 V, 60 Ah battery (reserve capacity 90 minutes).

Battery V/RC(Ah)12/90 (60)

Spark plugs

The Land Rover Range Rover Classic 3.5 (1987–1989) uses Champion RN11YCC spark plugs with a 0,8 mm electrode gap.

Spark plugs Original equipmentChampion
Spark plug TypeRN11YCC
Electrode gap mm0,8
Spark plugs MakeAutolite
Spark plug TypeAPP63
Electrode gap mm0,8
Spark plugs MakeBeru
Spark plug Type14-7DU
Electrode gap mm0,8
Spark plugs MakeBosch
Spark plug TypeW7DC
Electrode gap mm0,8
Spark plugs MakeChampion
Spark plug TypeRN11YCC
Electrode gap mm0,8
Spark plugs MakeNGK
Spark plug TypeBPR6E-VG
Electrode gap mm0,8

Tuning and emissions

Tuning conditions—
Ignition timing
Ignition timingWithout vacuum
Ignition advanceWithout vacuum and basic timing
Ignition advance checks °Engine/rpm3-8/1200
Ignition advance checks °Engine/rpm18-22/2200
Ignition advance checks °Engine/rpm22-28/3200
Idle speed rpm700-800
Oil temperature °C70
CO level at idle speed - tailpipe Vol. % CO0,5-1,0
HC level at idle speed ppm300
CO2 level at idle speed Vol. % CO213-16
O2 level at idle speed Vol. % O20,5-2,0

Starting and charging

Starter motor MakeLucas
Starter motor TypeM78R
Maximum cranking amps A162-198
Alternator MakeLucas
Alternator Type133/65
Alternator output A/V/rpm65/14/3000
Voltage regulator Type15TR
Regulated voltage V13,6-14,4

Service checks and adjustments

Oil pressure bar/rpm2,1-2,8/2400
Drive belt size - alternator mm9,5x1250

Fuel system

Regulated pressure with vacuum bar2,5-2,8

Tightening torques

Cylinder head bolt torque

The cylinder head bolts on the Land Rover Range Rover Classic 3.5 (1987–1989) are tightened in 3 stages: 40-50 Nm, then 60-70 Nm, then a final 88-95 Nm.

Cylinder head
Renew boltsNo
Tighten40-50 Nm
Tighten60-70 Nm
Tighten88-95 Nm
Cylinder head instructions—
Other engine tightening torques
Main bearings Renew bolts/nutsNo
Main bearings Stage 1—
Main bearings
Big end bearings Renew bolts/nutsNo
Big end bearings Stage 127 Nm
Big end bearings Stage 247-54 Nm
Oil pump to cylinder block12 Nm
Sump bolts10 Nm
Sump bolts
Sump drain bolt45 Nm
Flywheel/driveplate75-81 Nm
Crankshaft pulley/damper centre bolt257-285 Nm
Inlet manifold to cylinder head50 Nm
Exhaust manifold to cylinder head20 Nm
Spark plugs14-16 Nm
Chassis tightening torques
Brake caliper/carrier to hub Front82 Nm
Brake caliper/carrier to hub Rear82 Nm
Road wheels—

Bar lengths use a square-root scale so small and large values stay readable.

Frequently asked questions

What is the firing order of the Land Rover Range Rover Classic 3.5?

The firing order for the Land Rover Range Rover Classic 3.5 (1987–1989) is 1-8-4-3-6-5-7-2.

What spark plugs does the Land Rover Range Rover Classic 3.5 use?

The Land Rover Range Rover Classic 3.5 (1987–1989) uses Champion RN11YCC spark plugs with a 0,8 mm electrode gap.

How much oil does the Land Rover Range Rover Classic 3.5 take?

The Land Rover Range Rover Classic 3.5 (1987–1989) takes 5.7 litres of engine oil with the filter. A listed engine oil option is SAE 5W-30 for cold climates, with API/ACEA classification SG/A2. A listed engine oil option is SAE 10W-30 for moderate climates, with API/ACEA classification SG/A2. A listed engine oil option is SAE 15W-40 as an alternative for moderate climates, with API/ACEA classification SG/A2. A listed engine oil option is SAE 20W-50 for hot climates, with API/ACEA classification SG/A2.

What are the valve clearances for the Land Rover Range Rover Classic 3.5?

Valve clearances on the Land Rover Range Rover Classic 3.5 (1987–1989) are hydraulic — they self-adjust, so no manual clearance figure applies.

What is the cylinder head torque for the Land Rover Range Rover Classic 3.5?

The cylinder head bolts on the Land Rover Range Rover Classic 3.5 (1987–1989) are tightened in 3 stages: 40-50 Nm, then 60-70 Nm, then a final 88-95 Nm.

What is the minimum brake disc thickness for the Land Rover Range Rover Classic 3.5?

Front brake discs on the Land Rover Range Rover Classic 3.5 (1987–1989) are replaced at a minimum thickness of 12 mm (solid) or 22 mm (ventilated).