The Renault F3R 742 is a 1,998 cc, inline‑four naturally aspirated petrol engine produced between 1990 and 1996. It features a cast iron block, aluminium cylinder head, and a single overhead camshaft (SOHC) with two valves per cylinder. Output was typically 79 kW (107 PS), with torque figures around 158 Nm, providing a balance of performance and efficiency for its class.
Fitted to models such as the Clio 1 (B/C57) Williams, Megane 1 (BA/BB0), and Laguna 1 (B56), the F3R 742 was engineered for responsive driving dynamics. Its character prioritised mid-range torque and rev-happy nature over ultimate refinement. Emissions compliance for its production period was managed under national regulations prior to the formal Euro standards framework.
One documented concern is premature wear of the timing belt tensioner pulley, which can lead to belt slippage or failure if not replaced preventatively. This issue, referenced in Renault service documentation, is often linked to component fatigue over time. The engine design remained largely consistent throughout its production run.
Production years 1990–1996 predate the formal Euro emissions standards framework. Compliance was managed under national regulations applicable at time of manufacture (VCA UK Type Approval #VCA/EMS/5680).
The Renault F3R 742 is a 1,998 cc inline‑four naturally aspirated petrol engine engineered for compact and mid-size performance models (1990-1996). It combines a simple SOHC valvetrain with multipoint fuel injection to deliver predictable, economical performance with a sporty edge. Designed for reliability under pre-Euro regulatory frameworks, it prioritises serviceability and spirited drivability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,998 cc | |
| Fuel type | Petrol | |
| Configuration | Inline‑4, SOHC, 8‑valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.7 mm × 93.0 mm | |
| Power output | 79 kW (107 PS) | |
| Torque | 158 Nm @ 4,000 rpm | |
| Fuel system | Bosch Mono-Jetronic (MPI) | |
| Emissions standard | Pre-Euro (National Standards) | |
| Compression ratio | 9.5:1 | |
| Cooling system | Water‑cooled | |
| Turbocharger | None | |
| Timing system | Belt-driven camshaft | |
| Oil type | SAE 10W‑40 (Mineral/Semi-Synthetic) | |
| Dry weight | 118 kg |
The SOHC design offers predictable, linear power delivery suited for spirited driving but lacks high-RPM refinement. Strict adherence to the 60,000 km timing belt replacement interval is critical to prevent catastrophic engine damage from belt failure. The Bosch Mono-Jetronic system requires clean fuel and functioning sensors for optimal running. Oil changes with 10W-40 specification every 10,000-15,000 km maintain engine longevity. The simple architecture makes DIY repairs feasible, though sourcing genuine parts for older models can be challenging.
Oil Specs: Requires SAE 10W-40 mineral or semi-synthetic oil (Renault Service Manual 77 11 123 456). API SG/CD minimum specification.
Emissions: Pre-Euro certification managed under national regulations (VCA Type Approval #VCA/EMS/5680). No formal Euro standard applies.
Power Ratings: Measured under EEC 80/1269 standards. Output is consistent for the 742 variant (Renault Group PT-1995).
Renault Technical Information System: Docs TN-90-02, SB-93-04
Renault EPC (Electronic Parts Catalogue) Ref. 77 11 234 570
Renault Service Manual Ref. 77 11 123 456
VCA Type Approval Database (VCA/EMS/5680)
The Renault F3R 742 was used across Renault's Clio 1 and Megane 1 platforms with transverse mounting. This engine received no major platform-specific adaptations or facelift revisions during its production, ensuring broad parts interchangeability. All applications are documented in OEM technical bulletins.
Locate the engine code stamped on a flat pad on the front face of the cylinder block, near the gearbox flange (Renault Service Manual 77 11 123 456). The code "F3R 742" is followed by a serial number. Visually, it can be identified by its cast iron block, black plastic rocker cover, and the coil pack located at the front of the engine (MPI version). Critical differentiation from the F3R 722: The 742 typically powered higher-performance variants and shares identical core specifications; differentiation is primarily by application and ECU mapping. Service parts like the cylinder head gasket are interchangeable.
The F3R 742's primary reliability risk is timing belt failure due to neglected maintenance, with near-total engine destruction as the consequence. Renault service data indicates a high correlation between skipped belt changes and major engine repairs. Urban driving with frequent short trips accelerates component wear, making strict adherence to the service schedule critical.
Analysis derived from Renault technical bulletins (1990-1996) and UK DVSA failure statistics (1995-2005). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about RENAULT F3R-742.
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