The Renault J7R 760 is a 2,165 cc, inline‑six petrol engine produced between 1984 and 1996. It features a cast — iron block, an aluminium cylinder head with a single overhead camshaft (SOHC), and multi — point fuel injection. In standard form, it delivered approximately 94 kW (128 PS), offering smooth, linear power delivery for Renault's executive vehicles.
Fitted primarily to the Renault 25 TS and Baccara models, the J7R 760 was engineered for refined, quiet cruising and l…
Production years 1984–1996 meet applicable French and European emissions standards for passenger vehicles of that era (no centralized VCA-type approval existed for this period).
The Renault J7R 760 is a 2,165 cc inline‑six petrol engine engineered for executive sedans (1984-1996). It combines multi-point fuel injection with a single overhead camshaft to deliver smooth, linear power and refined operation. Designed for its era, it prioritizes durability and comfort over modern emissions or fuel economy targets.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,165 cc | |
Fuel type | Petrol | |
Configuration | Inline‑6, SOHC, 12‑valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 78.0 mm × 78.0 mm | |
Power output | 94 kW (128 PS) | |
Torque | 185 Nm @ 4,000 rpm | |
Fuel system | Multi-point fuel injection (Bosch LE Jetronic) | |
Emissions standard | Applicable 1980s/90s French/European standards | |
Compression ratio | 9.2:1 | |
Cooling system | Water‑cooled | |
Turbocharger | None | |
Timing system | Chain-driven | |
Oil type | SAE 10W-40 mineral oil | |
Dry weight | 190 kg |
The Renault J7R 760 was used exclusively in Renault's R25 platform with longitudinal mounting. This engine received minor platform-specific adaptations-reinforced engine mounts for the heavier Baccara variant-but no major revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
The J7R 760's primary reliability concern is failure of the water pump, with elevated incidence in vehicles subjected to extended coolant change intervals or using incorrect coolant. Renault Technical Note 4456E documents this issue, while owner reports frequently cite issues with the aging Bosch LE Jetronic fuel injection system. Adhering to the specified maintenance schedule is critical for long-term reliability.
Analysis derived from Renault technical bulletins (1984-1996) and owner club technical archives. Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The J7R 760 is a robust and smooth-running engine when maintained correctly. Its primary long-term concerns are the water pump and the aging Bosch LE Jetronic fuel injection system. Addressing these with timely replacements and using the correct fluids ensures excellent long-term reliability and refined operation.
The most frequently documented issues are water pump failure (addressed in SIB 4456E), faults in the Bosch LE Jetronic fuel injection system (sensors, injectors), distributor cap and rotor wear causing misfires, and oil leaks from the valve cover or front crank seal. These are well-covered in Renault's technical documentation.
The J7R 760 2.2L petrol engine was used exclusively in the Renault 25, across TS and Baccara variants, from 1984 until the model's discontinuation in 1996. It was not used in any other manufacturers' vehicles.
Yes, the J7R 760 can be modified for more power. Common upgrades include fitting a performance exhaust system, a high-flow air filter, and re-jetting or recalibrating the fuel injection system. More advanced tuning involves porting the cylinder head and fitting a performance camshaft. Significant power gains require substantial modification.
Official figures are not readily available, but real-world consumption for the Renault 25 TS is typically around 10-13 L/100km (28-22 mpg UK) in mixed driving. Highway cruising can yield figures closer to 8-9 L/100km (35-31 mpg UK). Fuel economy is heavily influenced by the condition of the fuel injection system and driving style.
Yes. The J7R 760 is an interference design. If the timing chain were to fail or jump significantly, the pistons would collide with the open valves, causing severe internal engine damage. This makes regular inspection of the timing components critical, although chain failure is uncommon.
Renault originally specified SAE 10W-40 mineral oil for the J7R 760. While modern semi-synthetic oils of the same viscosity can be used and may offer better protection, it is crucial to ensure compatibility with the engine's older seals and gaskets to prevent leaks.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
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