Engine & identification
Vehicle identification
| No. of cylinders Type | 4/OHV |
|---|---|
| Capacity (Fiscal) cc | 2495 (2478) |
| Compression ratio :1 | 8,0 |
| Suitable for unleaded petrol | Yes |
| Minimum octane rating RON | 91 |
| Ignition system Type | SZ |
| Ignition system Description | CB |
| Fuel system Make | Weber |
| Fuel system Type | 32/34 DMTL |
| Fuel system Description | Carb-2V |
| Diagnostic socket | No |
Ignition system
| Ignition coil Make | Bosch |
|---|---|
| Ignition coil Type | 0 221 119 368 |
| Ignition coil supply voltage + with ballast V | 11,0 |
| Primary resistance Ohm | 2,9 |
| Distributor (ECM) Make | Lucas/Ducellier |
| Distributor (ECM) No. | 45D4/- |
| Contact breaker gap/trigger air gap mm | 0,4 |
| Dwell angle °(%) | — |
Firing order
The firing order for the Land Rover 110 2.5 (1985–1990) is 1-3-4-2.
| Firing order | 1-3-4-2 |
|---|
Valve clearances
Valve clearances for the Land Rover 110 2.5 (1985–1990) are 0,25 mm inlet and 0,25 mm exhaust, measured hot.
| Valve clearance - INLET mm | 0,25 hot |
|---|---|
| Valve clearance - EXHAUST mm | 0,25 hot |
Engine oil & fluids
Engine oil
The Land Rover 110 2.5 (1985–1990) takes 6.8 litres of engine oil with the filter.
A listed engine oil option is SAE 5W-30 for cold climates, with API/ACEA classification SF/A2.
A listed engine oil option is SAE 10W-30 for moderate climates, with API/ACEA classification SF/A2.
A listed engine oil option is SAE 15W-40 as an alternative for moderate climates, with API/ACEA classification SF/A2.
A listed engine oil option is SAE 20W-50 for hot climates, with API/ACEA classification SF/A2.
Manual gearbox
The manual gearbox has a listed capacity of 1.8 litres. The specified oil is ATF-G.
Coolant
The total cooling-system capacity entries are 10.3 litres without a stated condition; 11.0 litres for HD.
Grades, filling conditions and capacities
| Engine oil options | |
|---|---|
| Ambient temperature range | Cold climate |
| Engine oil grade SAE | 5W-30 |
| Engine oil classification API/ACEA | SF/A2 |
| Ambient temperature range | Moderate climate |
| Engine oil grade SAE | 10W-30 |
| Engine oil classification API/ACEA | SF/A2 |
| Ambient temperature range | Moderate climate alternative |
| Engine oil grade SAE | 15W-40 |
| Engine oil classification API/ACEA | SF/A2 |
| Ambient temperature range | Hot climate |
| Engine oil grade SAE | 20W-50 |
| Engine oil classification API/ACEA | SF/A2 |
| Engine with filter(s) litres | 6.8 |
| Other lubricants and capacities | |
| Manual transmission oil grade SAE | ATF-G |
| Manual transmission litres | 1.8 |
| Differential front/AT litres | 1.7 |
| Differential oil grade - rear SAE | 90W |
| Differential rear litres | 2.3 |
| Cooling system - total capacity litres | 10,3 HD=11,0 |
Brakes & wear limits
Brake disc thickness
Brake discs on the Land Rover 110 2.5 (1985–1990) are replaced at a minimum thickness of 12 mm (solid) or 22 mm (ventilated) front; the rear brake drums are replaced at a maximum diameter of 255,5 mm.
| Minimum disc thickness for replacement - solid Front | 12 mm |
|---|---|
| Minimum disc thickness for replacement - ventilated Front | 22 mm |
| Maximum drum diameter for replacement Rear | 255,5 mm |
Brake disc and drum dimensions
| Minimum pad thickness Front | 3 mm |
|---|---|
| Minimum shoe thickness Rear | 2 mm |
| Parking brake travel No. of notches | 3-4 |
Bar lengths use a square-root scale so small and large values stay readable.
Service & electrical
Ignition timing
Basic ignition timing for the Land Rover 110 2.5 (1985–1990) is 16° BTDC at 2000 rpm.
| Ignition timing | Without vacuum |
|---|---|
| Ignition timing - basic BTDC °Engine/rpm | 16/2000 |
Battery
The Land Rover 110 2.5 (1985–1990) uses a 12 V, 55 Ah battery (reserve capacity 85 minutes).
| Battery V/RC(Ah) | 12/85 (55) |
|---|
Spark plugs
The Land Rover 110 2.5 (1985–1990) uses Champion RN9YCC spark plugs with a 0,8 mm electrode gap.
| Spark plugs Original equipment | Champion |
|---|---|
| Spark plug Type | RN9YCC |
| Electrode gap mm | 0,8 |
| Spark plugs Make | Bosch |
| Spark plug Type | W7DCO |
| Electrode gap mm | 0,8 |
| Spark plugs Make | Champion |
| Spark plug Type | RN9YCC |
| Electrode gap mm | 0,8 |
| Spark plugs Make | NGK |
| Spark plug Type | BP6ES |
| Electrode gap mm | 0,8 |
Tuning and emissions
| Ignition advance | Without vacuum and basic timing |
|---|---|
| Ignition advance checks °Engine/rpm | 0-2/1000 |
| Ignition advance checks °Engine/rpm | 16-19/2600 |
| Ignition advance checks °Engine/rpm | 36-40/4500 |
| Vacuum check | Ignition timing advances |
| Vacuum range °Engine | 22-26 |
| Vacuum starts mbar | 118 |
| Vacuum ends mbar | 845 |
| Idle speed rpm | 700 |
| Idle speed - alternative rpm | AC=800 |
| Oil temperature °C | 60 |
| CO level at idle speed - tailpipe Vol. % CO | 1,5±1,0 |
| HC level at idle speed ppm | 300 |
| 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 | Lucas |
|---|---|
| Starter motor Type | 2M100 |
| Maximum cranking amps A | 149-182 |
| Alternator Make | Lucas |
| Alternator Type | A115-34 |
| Alternator output A/V/rpm | 34/14/2500 |
| Regulated voltage V | 13,6-14,4 |
Service checks and adjustments
| Compression pressure bar | 11,2 |
|---|---|
| Oil pressure bar/rpm | 2,5-4,5 |
| Radiator cap bar | 0,60 |
| Thermostat opens °C | 82 |
Tightening torques
Cylinder head bolt torque
The cylinder head bolt torque for the Land Rover 110 2.5 (1985–1990) is 80-102 Nm.
| Cylinder head | |
|---|---|
| Renew bolts | No |
| Tighten | 80-102 Nm |
| Cylinder head instructions | — | |
|---|---|---|
| Other engine tightening torques | ||
| Main bearings Renew bolts/nuts | No | |
| Main bearings Stage 1 | 65-70 Nm | |
| Main bearings Stage 2 | 130-136 Nm | |
| Big end bearings Renew bolts/nuts | No | |
| Big end bearings Stage 1 | 18 Nm | |
| Big end bearings Stage 2 | 30-36 Nm | |
| Oil pump to cylinder block | 22-28 Nm | |
| Sump bolts | 15-20 Nm | |
| Sump drain bolt | 30-40 Nm | |
| Flywheel/driveplate | 130-143 Nm | |
| Clutch pressure plate | 30-38 Nm | |
| Crankshaft pulley/damper centre bolt | 270 Nm | |
| Camshaft sprocket/gear | 40-50 Nm | |
| Camshaft/rocker cover | 8-11 Nm | |
| Spark plugs | 14-19 Nm | |
| Chassis tightening torques | ||
| Steering track rod end | 81 Nm | |
| Brake caliper/carrier to hub Front | 120-150 Nm | |
| Road wheels | 108 Nm | |
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 110 2.5?
The firing order for the Land Rover 110 2.5 (1985–1990) is 1-3-4-2.
What spark plugs does the Land Rover 110 2.5 use?
The Land Rover 110 2.5 (1985–1990) uses Champion RN9YCC spark plugs with a 0,8 mm electrode gap.
How much oil does the Land Rover 110 2.5 take?
The Land Rover 110 2.5 (1985–1990) takes 6.8 litres of engine oil with the filter. A listed engine oil option is SAE 5W-30 for cold climates, with API/ACEA classification SF/A2. A listed engine oil option is SAE 10W-30 for moderate climates, with API/ACEA classification SF/A2. A listed engine oil option is SAE 15W-40 as an alternative for moderate climates, with API/ACEA classification SF/A2. A listed engine oil option is SAE 20W-50 for hot climates, with API/ACEA classification SF/A2.
What are the valve clearances for the Land Rover 110 2.5?
Valve clearances for the Land Rover 110 2.5 (1985–1990) are 0,25 mm inlet and 0,25 mm exhaust, measured hot.
What is the cylinder head torque for the Land Rover 110 2.5?
The cylinder head bolt torque for the Land Rover 110 2.5 (1985–1990) is 80-102 Nm.
What is the ignition timing for the Land Rover 110 2.5?
Basic ignition timing for the Land Rover 110 2.5 (1985–1990) is 16° BTDC at 2000 rpm.