The Land Rover 22 L – Petrol is a 2,286 cc, inline — four, naturally aspirated petrol engine produced between 1961 and 1971. It features a cast — iron block, overhead valve (OHV) configuration, and carburetted fuel delivery via a single SU carburettor. With an output of 72 bhp (54 kW) at 4,000 rpm and 125 lb·ft (170 Nm) of torque, it provided increased low — end power over the earlier 19 L unit for improved off — road performance.
Fitted to the Land Rover Series IIa and early Series II…
Production years 1961–1971 predate formal European emissions standards; no Euro compliance applies (UK VCA Historical Vehicle Classification).
The Land Rover 22 L – Petrol is a 2,286 cc inline-four OHV engine engineered for utility vehicles (1961–1971). It combines carburetted fuel delivery with a long-stroke design to deliver strong low-RPM torque. Designed for pre-regulatory operation, it prioritises mechanical durability over emissions control.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,286 cc | |
Fuel type | Petrol (Unleaded with lead replacement additive) | |
Configuration | Inline-4, OHV, 8-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 85.7 mm × 99.0 mm | |
Power output | 72 bhp (54 kW) @ 4,000 rpm | |
Torque | 125 lb·ft (170 Nm) @ 1,800 rpm | |
Fuel system | SU carburettor (Type H6) | |
Emissions standard | None (pre-regulatory) | |
Compression ratio | 7.25:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Chain-driven camshaft | |
Oil type | SAE 20W-50 mineral oil | |
Dry weight | 148 kg |
The Land Rover 22 L – Petrol was used across Land Rover's Series IIa and Series III platforms with longitudinal mounting and no licensed external applications. This engine received minor updates-cooling passage revisions in 1966 and carburettor calibration changes-and from 1971 the introduction of the 2.25 L and 2.6 L engines marked its phase-out, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from Land Rover technical bulletins (1961-1971) and UK DVSA historic vehicle inspection reports (2010-2023). Repair procedures should follow manufacturer guidelines.
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Yes, when properly maintained. The 22 L – Petrol is mechanically simple and durable, but long-term reliability depends on regular use and correct servicing. Engines stored for years without fluid changes or carburettor protection often suffer from fuel system blockages and corrosion. Keeping the engine running, using lead replacement petrol, and adhering to oil and valve adjustment intervals ensures longevity.
The most common issues are carburettor blockages due to ethanol-blended fuels, valve clearance drift requiring frequent adjustment, cooling system leaks from aged hoses, and cylinder head cracking in pre-1966 units. These are well-documented in Land Rover service literature and owner maintenance logs.
The 22 L – Petrol was used in the Land Rover Series IIa (1961–1971) and early Series III (1971 only) in both 88-inch and 109-inch wheelbase configurations. It was phased out in favour of the 2.25 L and 2.6 L engines. No other manufacturers used this engine in production vehicles.
Yes, common upgrades include electronic ignition, conversion to 12-volt negative earth (if not already), and installation of an electric fuel pump. Some owners retrofit a Weber carburettor for improved drivability, though SU specialists recommend rebuilding the original H6 with modern materials. Engine swaps to later Land Rover units are possible but require frame and transmission modifications.
Fuel economy is modest by modern standards. Expect 16–20 mpg (UK) under mixed driving conditions. Off-road or towing use can reduce this to 12–14 mpg. The engine's carburetted, low-compression design prioritises torque over efficiency. Real-world consumption depends heavily on vehicle weight, tyre size, and driving style.
No. The 22 L – Petrol is a non-interference engine. If the timing chain fails, the pistons will not contact the valves, preventing catastrophic internal damage. However, the engine will stop running, leaving the vehicle stranded. Regular chain inspection is still advised to ensure reliable operation.
Land Rover specifies SAE 20W-50 mineral engine oil for the 22 L – Petrol. This viscosity protects the engine's larger bearing clearances and flat-tappet camshaft. Use of modern synthetic oils is not recommended due to potential seal degradation and lack of zinc additives in current formulations. Oil should be changed every 3,000 miles or annually.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
UK type-approval authority for automotive products.
Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
GOV.UK: Vehicle Approval
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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