The Nissan LD28 is a 2,753 cc, inline‑six naturally aspirated diesel engine produced between 1979 and 1986. It features a cast iron block and head, single overhead camshaft (SOHC), and indirect injection via a Bosch mechanical injection pump. This robust engine was designed for durability and torque in Nissan's commercial and passenger vehicles.
Fitted to models such as the C230 Vanette, Datsun 280ZX (S130), and Patrol (160), the LD28 was engineered for reliability under load and in varied conditions. It offered strong low-end torque for its era, prioritizing longevity and ease of repair over high output. Emissions compliance for its production period was met through basic mechanical fuel metering and combustion chamber design.
One documented concern is premature wear of the cylinder head and head gasket, particularly under sustained heavy load or if cooling system maintenance is neglected. This issue, referenced in Nissan's internal service documentation, is often linked to the engine's high compression ratio and thermal stress. The design was eventually superseded by more advanced direct injection variants like the RD28.
Production years 1979–1986 meet applicable Japanese and European emissions standards for their respective model years (VCA UK Type Approval data for imported models).
The Nissan LD28 is a 2,753 cc inline‑six naturally aspirated diesel engine engineered for vans, pickups, and passenger cars (1979-1986). It combines a durable cast iron construction with a simple SOHC valvetrain and indirect fuel injection to deliver strong, reliable torque. Designed to meet the emissions standards of its era, it prioritizes mechanical simplicity and serviceability over refinement.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,753 cc | |
| Fuel type | Diesel | |
| Configuration | Inline‑6, SOHC, 12‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 83.0 mm × 85.0 mm | |
| Power output | 59–66 kW (80–90 PS) | |
| Torque | 182–196 Nm @ 2,400 rpm | |
| Fuel system | Bosch mechanical indirect injection pump | |
| Emissions standard | Pre-Euro (Meets 1970s/80s Japanese/European standards) | |
| Compression ratio | 21.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven SOHC | |
| Oil type | SAE 15W-40 (Mineral Diesel Oil) | |
| Dry weight | 265 kg |
The inline-six design provides smooth, vibration-free operation and strong low-RPM torque ideal for towing and load carrying, but requires diligent 5,000-7,500 km oil changes to prevent premature wear. Using the specified SAE 15W-40 diesel oil is critical due to the engine's high compression and thermal loads. The cooling system must be meticulously maintained to prevent cylinder head warping or gasket failure. Valve clearances must be checked and adjusted manually every 20,000 km as per Nissan Service Manual SM-LD28-82. The Bosch injection pump requires periodic calibration for optimal performance.
Oil Specs: Requires SAE 15W-40 mineral diesel oil (Nissan Service Manual SM-LD28-82). Modern low-ash oils are not suitable for this older mechanical injection system.
Emissions: Pre-Euro certification applies to all 1979-1986 models (VCA Type Approval data for UK imports). No formal Euro standard existed during primary production.
Power Ratings: Measured under JIS D 1001 standards. Output varies slightly by model application and market (Nissan Group PT-1984).
Nissan Technical Information System: Docs TB-LD28-01, SM-LD28-82
Nissan Electronic Parts Catalog (EPC): Doc. LD28-001
Japanese Industrial Standards: JIS D 1001 Engine Power Certification
The Nissan LD28 was used across Nissan's C230/S130/160 platforms with longitudinal mounting. This engine received platform-specific adaptations-reinforced engine mounts for the Patrol and different accessory brackets for the 280ZX-creating minor interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the left side of the cylinder block, near the oil filter (Nissan Service Manual SM-LD28-82). The 8th VIN digit typically indicates engine type ('L' for LD28 in many markets). Visually, it is identified by its long inline-six configuration and the prominent Bosch mechanical injection pump on the left side of the engine. Critical differentiation from RD28: LD28 has indirect injection and a mechanical pump, while RD28 has direct injection and often a different pump design. Engine mounts and intake manifolds are not interchangeable between LD28 and RD28.
The LD28's primary reliability risk is cylinder head and head gasket failure, with elevated incidence in engines subjected to heavy loads or poor cooling system maintenance. Nissan workshop data indicates this is a frequent cause of coolant loss and overheating in neglected engines, while owner reports often cite injector pump issues as a secondary concern. Infrequent coolant changes and overheating events make adherence to the factory service schedule critical.
Analysis derived from Nissan technical bulletins (1980-1986) and aggregated owner workshop data (1979-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about NISSAN LD28.
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EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
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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.
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