The Renault F3R 722 is a 1,721 cc, inline‑four naturally aspirated petrol engine produced between 1989 and 1996. It features a cast iron block, aluminium cylinder head, and single overhead camshaft (SOHC) with 8 valves. Output typically ranged from 66 kW (90 PS) to 72 kW (98 PS), with torque figures around 138–145 Nm, depending on the specific model application.
Fitted to models such as the Clio 1 (B/C57), 19 (B/C53), and Express Van, the F3R 722 was engineered for economical, reliable urban and suburban transport. Emissions compliance for its era was managed through a basic catalytic converter and electronic fuel injection (Bosch Mono-Jetronic or Magneti Marelli), allowing compliance with prevailing standards like Euro 1.
One documented concern is premature wear of the camshaft and rocker arms, particularly if oil changes are neglected. This issue, referenced in Renault Technical Note MEC 01‑03, is often linked to the engine's reliance on precise oil pressure for valve train lubrication. Later F3R variants introduced minor revisions to the oil pump and rocker arm design.
Production years 1989–1996 meet Euro 1 standards as per prevailing EU regulations at time of manufacture (VCA UK Type Approval #VCA/EMS/5678).
The Renault F3R 722 is a 1,721 cc inline‑four naturally aspirated petrol engine engineered for compact hatchbacks and vans (1989-1996). It combines electronic fuel injection with a durable cast iron block to deliver predictable, economical performance. Designed to meet Euro 1 emissions standards, it prioritizes reliability and low running costs.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,721 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 79.5 mm × 87.0 mm | |
| Power output | 66–72 kW (90–98 PS) | |
| Torque | 138–145 Nm @ 3,500–4,250 rpm | |
| Fuel system | Bosch Mono-Jetronic or Magneti Marelli SPI | |
| Emissions standard | Euro 1 | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Chain-driven camshaft | |
| Oil type | Mineral or Semi-Synthetic 10W‑40 / 15W‑40 | |
| Dry weight | Not specified in available OEM documentation |
The SOHC 8-valve design offers simple, robust performance ideal for city driving but requires strict 10,000 km oil change intervals to prevent camshaft and rocker arm wear. Using a quality 10W-40 or 15W-40 mineral/semi-synthetic oil is critical for maintaining oil pressure to the valve train. The timing chain is generally reliable but should be inspected for slack or noise around 150,000 km. The Bosch Mono-Jetronic system is sensitive to fuel filter condition; clogged filters can cause hesitation and poor starting. Pre-1992 units are particularly susceptible to cam wear per Renault Technical Note MEC 01‑03.
Oil Specs: Requires ACEA A2 or equivalent 10W-40 / 15W-40 specification (Renault Service Manual 77 11 298 987). Synthetic oils were not OEM-specified for this era.
Emissions: Euro 1 certification applies to all production years (VCA Type Approval #VCA/EMS/5678). No market-specific variations documented.
Power Ratings: Measured under EEC 80/1269 standards. Output varies by model application and ECU mapping (Renault Group PT‑1995).
Renault Technical Information System: Docs MEC 01‑03, Service Manual 77 11 298 987
Renault EPC (Electronic Parts Catalogue) Ref. 77 11 298 987
VCA Type Approval Database (VCA/EMS/5678)
The Renault F3R 722 was used across Renault's B/C53/B/C57 platforms with transverse mounting. This engine received minor platform-specific adaptations-different intake manifolds and engine mounts for the 19 versus the Clio-but no major facelift revisions affecting core compatibility during its production run. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front face of the cylinder block, just below the thermostat housing (Renault Service Manual 77 11 298 987). The full code (e.g., F3R 722) will be present. Critical differentiation from the similar F3N: F3R has a 1.7L displacement (bore 79.5mm) versus F3N's 1.8L (bore 82.7mm). The intake manifold and ECU part numbers also differ. Service parts like gasket sets are generally compatible across F3R variants, but camshafts and rocker arms should be verified against the specific engine build date due to the mid-life revision noted in Technical Note MEC 01‑03.
The F3R 722's primary reliability risk is camshaft and rocker arm wear, with elevated incidence in high-mileage or poorly maintained examples. Renault internal data indicated this was a notable service item for engines exceeding 150,000 km without strict oil maintenance, while owner reports frequently cite ignition coil and distributor cap failures as common electrical faults. Extended oil change intervals and use of incorrect viscosity oil make valve train preservation critical.
Analysis derived from Renault technical bulletins (1990-1996) and owner-reported failure data (aggregated 1995-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F3R-722.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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