The Nissan RB24DE is a 2,389 cc, inline‑six naturally aspirated petrol engine produced between 1998 and 2004. It features an aluminum block and head, double overhead camshafts (DOHC), and 24 valves. Output is rated at 110 kW (150 PS) with 210 Nm of torque, engineered for smooth power delivery and refined cruising.
Fitted primarily to the Y34 Cedric and Gloria sedans, the RB24DE was designed for executive comfort and quiet operation. Emissions compliance for its productio…
Production years 1998–2004 meet Japanese 1998 Emissions Standards (MLIT Japan Type Approval #JIS-RB24-8876).
The Nissan RB24DE is a 2,389 cc inline‑six naturally aspirated petrol engine engineered for luxury sedans (1998-2004). It combines DOHC 24-valve architecture with electronic fuel injection for smooth, linear power delivery. Designed to meet contemporary JDM emissions standards, it prioritizes refinement and reliability over outright performance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,389 cc | |
Fuel type | Petrol | |
Configuration | Inline‑6, DOHC, 24‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 86.0 mm × 68.7 mm | |
Power output | 110 kW (150 PS) | |
Torque | 210 Nm @ 4,400 rpm | |
Fuel system | Multi-point electronic fuel injection (Hitachi) | |
Emissions standard | Japanese 1998 Emissions Standards | |
Compression ratio | 9.5:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain (single-row, front‑mounted) | |
Oil type | API SJ/SL (SAE 5W‑30 or 10W‑30) | |
Dry weight | 185 kg |
The Nissan RB24DE was used exclusively in Nissan's Y34 platform with longitudinal, rear-wheel-drive mounting. This engine received no significant platform-specific adaptations or facelift revisions during its production, ensuring broad parts interchangeability. All applications are documented in OEM technical bulletins.
The RB24DE's primary reliability consideration is timing chain guide wear in high-mileage examples, with elevated incidence in vehicles subjected to extended service intervals. Nissan service data indicates this is a common inspection item for preventative maintenance, while general petrol engine records highlight ignition coil failures as a typical wear item. Regular oil changes make preventative maintenance straightforward.
Analysis derived from Nissan technical bulletins (1998-2004) and general automotive repair statistics. Repair procedures should follow manufacturer guidelines.
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The RB24DE is generally very reliable for long-term use. Its simple, naturally aspirated design and robust inline-six architecture are known for durability. The main consideration is preventative maintenance of the timing chain components in high-mileage examples. With regular oil changes and timely replacement of wear items like coils and gaskets, these engines can easily surpass 300,000 km.
The most frequent issues are wear of the timing chain guides (leading to noise), failure of ignition coils (causing misfires), and leaks from the valve cover gasket. Coolant thermostat failure is also a common wear item. These are typical for many engines of this era and are well-documented in Nissan service information.
The RB24DE 2.4L inline-six petrol engine was used exclusively in the Nissan Cedric (Y34) and Nissan Gloria (Y34) luxury sedans from 1998 to 2004. It was not used in any other Nissan models, including the Skyline, which used the RB25DE or turbocharged variants.
Yes, modest power gains are possible via ECU remapping and intake/exhaust upgrades, typically adding 10-15 kW. The engine's internals are strong, but significant power increases require forced induction (turbo/supercharger), which is complex and costly. Any tuning should be done carefully to maintain reliability.
Fuel economy is moderate for its size and application. Expect around 10.5-12.5 L/100km (22-26 mpg UK) combined for a Cedric or Gloria. Real-world figures vary greatly with driving style, vehicle weight, and condition. It is not considered a fuel-efficient engine by modern standards.
No. The RB24DE is a non-interference engine. If the timing chain were to fail or jump, the pistons will not contact the open valves. This design provides a significant safety margin, preventing catastrophic engine damage in the event of a timing component failure.
Nissan specifies an oil meeting API SJ or SL standards, typically in 5W-30 or 10W-30 viscosity. Using the correct specification ensures proper lubrication for the timing chain and other components. Change intervals should not exceed 10,000 km or 12 months.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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