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Renault F-Type engine
Renault F-Type engine
from Wikipedia
Renault F-Type engine
Overview
ManufacturerRenault
Production1982–present
Layout
ConfigurationI4
Displacement
  • 1.6 L (1,596 cc)
  • 1.7 L (1,721 cc)
  • 1.8 L (1,764 cc)
  • 1.8 L (1,783 cc)
  • 1.8 L (1,794 cc)
  • 1.9 L (1,870 cc)
  • 2.0 L (1,965 cc)
  • 2.0 L (1,998 cc)
Cylinder bore
  • 78 mm (3.07 in)
  • 80 mm (3.15 in)
  • 81 mm (3.19 in)
  • 82 mm (3.23 in)
  • 82.7 mm (3.26 in)
Piston stroke83.5 mm (3.29 in)
93 mm (3.66 in)
Cylinder block materialCast iron
Cylinder head materialAluminum alloy
ValvetrainSOHC 2 valves x cyl.
DOHC 4 valves x cyl.
Combustion
TurbochargerDiesel and sports versions
Fuel systemCarburettor, Fuel injection
Fuel typeGasoline/Diesel
Cooling systemWater-cooled
Chronology
PredecessorCléon-Alu engine
Douvrin engine
SuccessorRenault K-Type engine
Renault M-Type engine
Renault R-Type engine

F Renault engine (F for fonte, French for cast iron) is an automotive internal combustion engine, four-stroke, inline-four engine bored directly into the iron block, water cooled, with overhead camshaft driven by a timing belt, and with an aluminum cylinder head, developed and produced by Renault in the early '80s, making its appearance on the Renault 9 and 11. This engine is available in petrol and diesel versions, with 8 or 16 valves.

History

[edit]

In December 1982,[1] the Renault Board presented a new 1,596 cc (1.6 L) diesel engine with 55 PS (40 kW; 54 hp) for the Renault 9. Known as "F8M", the new engine was designed by engineer George Douin and his team and broke with tradition by not featuring removable cylinder liners, thanks to advances in metallurgy that significantly slowed the wear of rubbing mechanical parts. The new four-cylinder unit adopted an overhead camshaft driven by a toothed belt that also controls the diesel injection pump. A second belt rotates the alternator and water pump, while a vacuum pump located at the rear operates the brake servo. The cast iron block is topped by a light alloy cylinder head featuring Ricardo Comet prechambers. The engine is mounted transversely inclined rearwards 12°. In the autumn of 1983, the diesel was added to the new Renault 11 hatchback derivative.

In the autumn of 1983, Renault launched the 1,721 cc (1.7 L) F2N petrol engine, using the block of the F8M.[2] It has a diesel-type architecture, with combustion chambers integrated with the piston design. Since the petrol version does not require water channels in the block, a bigger bore was possible than in the smaller diesel version. It first appeared in twin carburettor form in the Renault 11 GTX, TXE, and the TXE Electronic with digital meter and speech synthesis. In February 1984, the F2N was added to the Renault 9 GTX and TXE. This engine was called the B172 by Volvo.

Thereafter, the F8M was also used in the Renault 5 Express (Rapid/Extra), and the Volvo 300 series. The F2N was installed in the Renault 21, Renault 5, Renault 19, Renault Clio, Volvo 340/360 and also the Volvo 400 series (where it was designated B18KP by Volvo). A version with a single-barrel carburetor was installed in some early Renault Trafic models and some R21, called the F1N. The 1,721 cc (1.7 L) petrol version was also built with multi-point fuel injection as the F3N. This was fitted to the U.S. versions of the Renault 9 and Renault 11 (Renault Alliance and Encore), as well as to GTE models of the Renault 5 and 11 sold in some countries such as Switzerland and Germany — as the old carburetted turbo Cléon-Fonte engines no longer met the pollution standards in these countries.

Volvo built turbocharged versions of the F2N with multipoint fuel injection (designated "B18FT"), installed in the Volvo 480 Turbo, the 440 Turbo Volvo and Volvo 460 Turbo. These engines are sought after to fit to Renault 5 GT Turbo, Renault 9 Turbo and Renault 11 Turbo.

Production is centered on Renault's engine manufacturing facility at Cléon, near Rouen in Normandy.[3][4]

Evolution

[edit]

Diesel versions

[edit]

Beginning in 1987, the 1.6D underwent changes to make it more quiet. This F8M second generation was unfortunately weaker at the cylinder head and head gasket. More asbestos was being dropped, which was exacerbated the problems of cylinder head gaskets. Externally, a second generation F8M known by its cylinder head cover 6 which is secured by small screws, while a first generation F8M 3 has closed nuts for securing the valve cover. The housing for the F8M second generation had a non-painted surface around the injection pump, while the first generation F8M had completely black casing.

In 1988, Renault launched the Renault 19 as the replacement for the Renault 9 and Renault 11. The preceding F8M 1.6 D diesel engine developed 55 bhp (41 kW; 56 PS), but since it was not powerful enough to power the heavier Renault 19, Renault changed the stroke and bore of the 1.6 D, to obtain 1,870 cc (1.9 L) (1.9 D) which gave rise to F8Q which was developing 65 bhp (48 kW; 66 PS). This engine would also eventually be used in the Clio 1, Clio-based Express (Rapid / Extra), Renault 21, Kangoo, Mégane 1 and Trafic 1. A lower powered version producing 55 PS (40 kW; 54 bhp) DIN was introduced in the 1990s. The second generation F8Q cylinder heads and head-gaskets were problematic.[clarification needed]

At the end of 1988, a turbocharged version of the 1.9 D was sold with the R19 model, which was designated F8QT. It developed 95 bhp (71 kW; 96 PS) DIN. It was also used in the Renault Mégane 1, Volvo 440, Volvo 460, Volvo S40, V40 and Mitsubishi Carisma.

In the autumn of 1997, Renault introduced the 1.9 dT as their first version of the engine with Direct injection, the 1.9 dTi, designated as engine type F9Q. It was being used in the Mégane 1, Scénic 1, Laguna 1, Kangoo 1, Clio 2, Mitsubishi Carisma and the Volvo S40 and V40.

In July 1999, the 1.9 dTi was upgraded to common rail higher pressure injection. This, the F9Q, was Renault's first dCi engine. It appeared in the Laguna 1 Phase 2. The 1.9 dCi was also used in the Mégane 1 Phase 2, Scénic 1 Phase 2, Laguna 2, Mégane 2, Scénic 2, Espace 3, Espace 4, Trafic 2, Master 2, Volvo S40, Volvo V40, Mitsubishi Carisma, Suzuki Grand Vitara, Nissan Primera and so on.

Gasoline versions

[edit]

In 1986, the Renault 21 2.0 was introduced, with a displacement of 1,965 cc (2.0 L), with F2R using a twin-barrel carburetor and F3R, injection version. The F3R with 1,965 cc (2.0 L) also equipped the Renault Alliance GTA in North America.

In early 1989 Renault premiered the sports version of the Renault 19, replacing the Renault 9 Turbo and Renault 11 Turbo, although it only went on sale in the second half of 1990. Renault abandoned its 1.4 Cléon-Fonte turbo carburetor in favor of a multi-valve engine with multipoint injection, an evolution of the engine of the 1,721 cc (1.7 L) F2N. The stroke remained the same, but the bore was increased by 1 mm, giving a displacement of 1,764 cc (1.8 L). The cast-iron block was topped by a 16-valve alloy cylinder head.[5] This, the F7P engine, had 140 PS (103 kW; 138 hp) and was also used in the Clio 16S from February 1991, replacing the Super 5 GT Turbo. Starting in July 1992, the Clio 16S and 16S R19 were fitted as standard with a catalytic converter in order to comply with pollution standards applicable from 1 January 1993, losing three horsepower in the process.

The Renault Clio Williams appeared in 1993. This was not only meant to celebrate titles gleaned in Formula 1 with Frank Williams' team, but also to be homologated for competition (requiring a minimum production of 2,500). In order to run in Group A, Renault needed a 2.0-liter engine to be the best equipped in its class. Starting with the F7P engine block from the Renault Clio 16S, Renault developed the 1,998 cc (2.0 L) F7R with 150 PS (110 kW; 148 bhp). The increase in capacity was obtained by boring out the engine by 0.7 mm (0.03 in) and by adopting the diesel engine's crankshaft, thus increasing the stroke from 83.5 to 93 mm (3.29 to 3.66 in). This stronger crankshaft was also better able to cope with the increased torque, which now reached 175 N⋅m (129 lb⋅ft) at 4,500 rpm. The F7R was also used in the Mégane 1 and Renault Spider.

Starting from 1 January 1993, all car models would be equipped with a fuel injection system and a catalytic converter. Here the F2N of 1,721 cc (1.7 L) saw increased bore and therefore a new cylinder capacity of 1,794 cc (1.8 L). It would be known as the "F3P" on the Renault Clio 1 and 19, and "B18U" on the Volvo 440 and Volvo 460. In contrast, the Renault 21, then at the end of its lifespan retained its 1,721 cc (1.7 L), but with injection (type motor F3N). Volvo would also retain the 1,721 cc (1.7 L) injection (type motor B18EP), alongside the new 1,794 cc (1.8 L). In 1994, the Laguna would be equipped with the F3P engine.

Volvo also marketed a 1,596 cc (1.6 L) petrol version with multipoint injection, sold as the "B16F" in Volvo nomenclature. It was installed in the Volvo 440 and 460 models. Peculiarly, this engine had the same bore and stroke (and resulting displacement) as the diesel F8M engine.

Version 8 valves engine F7R 115 PS (85 kW; 113 bhp) would appear on Laguna 1, it was also used in the Mégane 1 and Scenic Area 1 and 3, and was there known as the "F3R." In the Volvo 440, 460 and 480, the engine was known as the "B20F". The new 1,998 cc (2.0 L) F3R replaced the old 1,965 cc (2.0 L) F3R engine.

The F4P first appeared in 1998, in the Phase 2 model of the first generation Laguna. This new 16 valve 1.8 L (1,783 cc) was also used in the first Mégane Scénic and the second generation Laguna. At the same time, the bigger F4R was used in the Laguna and Espace (third generation), with the same engine size as the F7R 1,998 cc (2.0 L) from the Clio Williams. It also ended up in the second and third generation Mégane as well as the second Laguna. The F4P and F4R engines was specifically known by their 16-valve cylinder head, similar to the K4J and K4M versions of K-Type engine. The F4P and F4R engines shared the same distribution kit and water pump of the 16 valved K-Type engines (K4J and K4M).

In 1999, the F5R engine was introduced. This was an F7R engine, equipped with direct injection. This 16 valve DI engine was used in the Mégane coupé and convertible, as well as the Laguna 2. This was the first produced French petrol engine with direct injection.[citation needed]

In 1999, Renault launched the Clio 2 RS, powered by the 1,998 cc (2.0 L) F4R 16 valve engine with 172 PS (127 kW; 170 bhp). The engine, sourced from the Laguna, was tuned by Mecachrome and fitted with 2-stage variable valve timing on the intake cam, matched inlet and exhaust ports and 4-into-1 exhaust headers. In 2001 the Phase 2 F4R received electronic throttle control. In 2004, the Phase 3 version of the Clio 2 RS gained 10 PS (7 kW; 10 bhp) for a total of 182 PS (134 kW; 180 bhp) using 4-2-1 exhaust headers, changes to the intake manifold and exhaust system (the new twin rear mufflers requiring the removal of the spare wheel well in the boot). Power was increased further in 2006 for the Clio 3 RS, now with 197 PS (145 kW; 194 bhp), using further improvements to the intake and exhaust, notably continuously variable valve timing on the intake cam. The output for the Clio was increased again to 203 PS (149 kW; 200 bhp) for the Phase 2 model of the third generation Clio RS.

The F4R would also be made with a turbo, and then known as the F4Rt. It would equip two Mégane, Laguna 2, Laguna 3 Avantime and Vel Satis, but especially this basis was used for the Mégane 2 RS 225 bhp (228 PS; 168 kW) (230 bhp (233 PS; 172 kW) version of the F1 Team R26 and R26.R.

The Mégane RS 3 was presented in March 2009 at the Geneva show. It was equipped with the 2.0 16V Turbo block F4Rt the Mégane 2 RS with variable valve timing, increased to 250 PS (184 kW; 247 bhp). In June 2011, Renault launched a limited edition "RS Trophy 'power increased to 265 PS (195 kW; 261 bhp), followed by a 275 PS (202 kW; 271 bhp) version.

Cylinder capacities

[edit]
Engine types Displacement Bore x stroke
Diesel
F8M 1,596 cc (1.6 L) 78 mm × 83.5 mm (3.07 in × 3.29 in)
F8Q — F8QT — F9Q 1,870 cc (1.9 L) 80 mm × 93 mm (3.15 in × 3.66 in)
Gasoline
B16F 1,596 cc (1.6 L) 78 mm × 83.5 mm (3.07 in × 3.29 in)
F1N — F2N — F3N — B18KP — B18E — B18EP — B18F — B18FT 1,721 cc (1.7 L) 81 mm × 83.5 mm (3.19 in × 3.29 in)
F7P 1,764 cc (1.8 L) 82 mm × 83.5 mm (3.23 in × 3.29 in)
F4P 1,783 cc (1.8 L) 82.7 mm × 83 mm (3.26 in × 3.27 in)
F3P — B18U 1,794 cc (1.8 L) 82.7 mm × 83.5 mm (3.26 in × 3.29 in)
F2R — F3R 1,965 cc (2.0 L) 82 mm × 93 mm (3.23 in × 3.66 in)
F3R — F7R — F5R — F4R — F4RT — B20F 1,998 cc (2.0 L) 82.7 mm × 93 mm (3.26 in × 3.66 in)

Discontinued

[edit]

F1x

[edit]

The F1x was only available with a displacement of 1.7 L (1,721 cc). It has a parallel valve engine architecture aspirated by a single-barrel carburetor.

Applications:

  • F1N 1.7 L (1,721 cc; 105.0 cu in), B x S: 81 mm × 83.5 mm (3.19 in × 3.29 in).

F2x

[edit]
The 1,721 cc (1.7 L) F2N engine was called B172 when installed in Volvos, here in a 340

The F2x is an eight-valve SOHC with double-barrel carburetor.

Applications:

F3x

[edit]
An F3R engine, installed in a Moskvitch 214145 "Svyatogor"

The F3x is mechanically similar to the F2x, only used a monopoint-EFI system. Some later versions were equipped with multi-point fuel injection. A turbocharged version designed by Porsche was available for the Volvo 400-series.

Applications:

F5x

[edit]

The F5x resembles the F4x mechanically with an architecture of 16 indirect actuated valves and DOHC, but used a "direct injection IDE" fuel system. It was only offered in a 2-liter version.

Applications:

F7x

[edit]

The F7x was the first of the F-type engine family with a 16-valve DOHC configuration, the valves were directly actuated by Hydraulic tappets. Both the 1.8 and the 2.0-litre versions were equipped with a multi-point fuel injection system.

Applications:

F8x

[edit]

The F8x is an indirect injected diesel version with an 8-valve SOHC architecture. It uses precombustion chambers to achieve the required air/fuel mixing.

Applications:

F9x

[edit]

The F9x is the direct injected Diesel version and also features an 8-valve SOHC configuration, it has swirl generating intake ports to create swirling (vortex) of the aspirated air, and either a toroidal- or an elsbett-shaped piston bowl to twist the injected fuel vapour, also to achieve the required air/fuel mixing. The diesel fuel is delivered either by a mechanical injection pump (dTi) or a common rail fuel injection (dCi) installation.

Applications:

In production

[edit]

F4x

[edit]

The F4x is an indirect actuated 16-valve DOHC with a multi-point fuel injection system.

Twin-scroll turbo on the F4Rt engine

References

[edit]
Revisions and contributorsEdit on WikipediaRead on Wikipedia
from Grokipedia
The Renault F-Type engine is a family of four-stroke, inline-four internal combustion engines featuring a block bored directly into the iron, , and an overhead driven by a timing belt. Developed by the French automaker , the F-Type series (with "F" denoting "fonte," French for cast iron) succeeded earlier engine families and was designed for reliability and versatility in passenger cars and light commercial vehicles. Displacements in the family typically range from 1.6 liters to 2.0 liters, encompassing both petrol and diesel variants, including naturally aspirated and turbocharged options, with production centered at Renault's Cléon plant in , . Introduced in 1981, the F-Type engines marked a significant evolution in Renault's engineering, building on prior cast-iron block designs while incorporating modern features like heads and electronic for improved performance and efficiency. Over the course of their production run, which extended into the for some variants, more than 14.5 million F-Type engines were manufactured at the Cléon facility, contributing to the plant's of 100 million powertrains by 2023. This enduring production reflects the family's adaptability, with ongoing refinements addressing emissions standards and power demands across Renault's lineup. Key variants within the F-Type family include the F7P, a 1.8-liter (1,764 cc) 16-valve DOHC producing 135 horsepower at 6,500 rpm and 158 Nm of torque at 4,250 rpm, which powered performance-oriented models such as the 16S and 16V. The F7P featured an alloy , double valve springs, and dual camshafts for enhanced high-revving capability, making it a staple in Renault's offerings during the . Later evolutions like the F4P, a 1.8-liter (1,783 cc) naturally aspirated unit, equipped mid-size sedans and wagons such as the from 1998 to 2005, emphasizing smooth operation and economy. Turbocharged models, including the 2.0-liter F4RT, delivered up to 170 horsepower in vehicles like the Avantime, Vel Satis, Espace, Laguna, Scenic, and Mégane between 2001 and 2016, showcasing the family's transition to for modern MPVs and SUVs.

Overview

Design principles

The Renault F-Type engine family represents a series of inline-four, four-stroke internal combustion engines designed primarily for passenger vehicles, with cylinders bored directly into a block—a design choice reflected in the "F" designation, derived from the French word "fonte" meaning cast iron. This robust construction provides durability and thermal stability, allowing the engines to withstand high operating temperatures and pressures over extended service life. Introduced in 1982 as a successor to earlier powerplants, the F-Type architecture emphasizes reliability and modularity for both petrol and diesel applications. All variants feature a water-cooled system to manage heat dissipation, integrated with an overhead configuration that varies by model: single overhead (SOHC) for simpler, cost-effective designs and dual overhead (DOHC) for higher-performance iterations to enable more precise . Later evolutions incorporated aluminum cylinder heads to reduce overall while maintaining structural , improving without compromising the engine's core strength. Bore and stroke dimensions are adjusted across the family to achieve displacements ranging from 1.6 liters to 2.0 liters, such as the 82.7 mm bore and 93 mm stroke in 2.0-liter petrol units or similar variations in diesel configurations. Compression ratios are tailored to fuel type and performance goals, typically spanning 9.2:1 to 11.0:1 for petrol variants to balance power output and economy, while diesel versions employ higher ratios of 17:1 to 19:1 for enhanced efficiency and in compression-ignition operation. These design principles collectively prioritize longevity, adaptability, and cost-effective manufacturing, forming the foundational engineering philosophy of the F-Type family.

Technical specifications

The Renault F-Type engine family encompasses inline-four configurations with displacements ranging from 1,596 cc in the initial F8M diesel variant to 1,998 cc in later petrol models such as the F4R and F7R. These engines feature varied bore and stroke dimensions to accommodate different capacities, exemplified by 78 mm × 83.5 mm in the 1.6 L F8M and 82.7 mm × 93 mm in 2.0 L variants like the F4R. Valve arrangements progressed from an 8-valve single overhead (SOHC) setup in early iterations, such as the F8M with its aluminum , to a 16-valve dual overhead (DOHC) design in advanced models including the F4R, which incorporates hydraulic lifters. Fuel delivery systems evolved across the family, beginning with carbureted induction in initial petrol applications, advancing to multi-point electronic in mid-generation units like the F4R, and culminating in direct injection technologies such as the common-rail system in the F9Q diesel and the electronic direct injection in the F5R petrol. Operational parameters include typical redlines of 6,000–7,500 rpm for petrol variants, reflecting their higher-revving nature, while diesels operate at lower limits around 4,500–5,000 rpm to optimize delivery. Dry weights for the engines generally fall in the 139–140 kg range, contributing to their balanced performance in front-wheel-drive applications. Later developments in the family introduced turbocharging to enhance efficiency and output in select variants.

History and development

Origins and introduction

The Renault F-Type engine family was designed by Georges Douin and his at Renault's Cléon manufacturing plant in , . Introduced in 1982, this new inline-four engine series replaced the older C-Series units, prioritizing enhanced and long-term durability through innovative construction features like a directly bored cast-iron block without removable liners. The inaugural variant was the 1.6-liter naturally aspirated diesel F8M, delivering 55 PS (40 kW), which debuted in the 9 and 11 compact cars to meet growing demand for economical diesel powertrains in Europe. In autumn 1983, expanded the lineup with the 1.7-liter petrol F2N variant, rated at around 80 PS, initially powering the mid-size and supplied to partner models such as the 340 and 360 for export markets.

Key evolutionary milestones

The Renault F-Type engine family saw significant advancements in the mid-1980s with the introduction of 16-valve cylinder heads on variants such as the F7P, enabling higher engine speeds and improved power output compared to earlier 8-valve designs. These updates marked a shift toward more efficient combustion and greater performance potential within the cast-iron block architecture. In the 1990s, diesel developments included the turbocharged F8QT variant, delivering 90 PS (66 kW) to meet growing demand for efficient powertrains in models like the . This was followed by the F9Q, which incorporated common-rail fuel injection starting in 1999, achieving up to 130 PS while enhancing fuel economy and emissions control to comply with evolving standards. Petrol engine evolution continued in 1993 with the F4R 2.0-liter variant, featuring that optimized airflow for better torque and efficiency, culminating in a 172 PS output in high-performance applications like the RS. By 1998, the F5R introduced direct injection (IDE system), becoming the first such petrol engine produced in by and offering improved through precise fuel delivery. During the 2000s, updates across the F-Type family focused on emissions compliance, incorporating (EGR) and advanced catalytic converters to meet Euro 4 and Euro 5 standards, particularly in dCi diesel variants. These modifications ensured continued relevance amid stricter regulations without major redesigns to the core block. Overall, the F-Type engines achieved over 14.5 million units produced by the , primarily at Renault's Cléon facility in , underscoring their enduring role in the company's lineup.

Diesel variants

Early naturally aspirated diesels (F8M, F8Q)

The Renault F8M was the inaugural diesel variant in the F-Type family, introduced in 1982 as a 1.6-liter naturally aspirated inline-four engine designed for compact vehicles requiring economical propulsion. Featuring a cast-iron block and aluminum cylinder head with eight valves, it displaced 1,595 cc (bore 78 mm, stroke 83.5 mm) and achieved a compression ratio of 22.5:1, enabling reliable indirect injection operation. Output stood at 54–56 hp (40–41 kW) at 4,500 rpm and 98–102 Nm of torque at 2,250 rpm, prioritizing low-end usability over high performance. This engine powered models such as the Renault 9 and 11 from 1982 to 1988, as well as the Renault 5 (1985–1996) and Express (1985–1994), and was also adopted by Volvo for the 340 and 360 series (1984–1991). Fuel consumption averaged 6.4 L/100 km combined (8.3 L/100 km city, 5.2 L/100 km highway) in applications like the 1986 Renault Express, reflecting its efficiency for urban and light-duty use. Compliant with pre-Euro (Euro 0) emissions standards, it lacked advanced aftertreatment but met early regulatory needs through basic design. Building on the F8M, the F8Q arrived in 1988 as a larger 1.9-liter naturally aspirated diesel, expanding the F-Type lineup for mid-size cars with improved torque characteristics. With a displacement of 1,870 cc (bore 80 mm, stroke 93 mm), cast-iron block, and aluminum eight-valve head, it maintained indirect injection and a 21.5:1 compression ratio for the atmospheric version, delivering 54–64 hp (40–47 kW) at 4,500 rpm and 118–120 Nm at 2,250 rpm. Applications included the Renault 19 and Clio (1988–1998), alongside broader use in the 21, Kangoo, Mégane, Scénic, and Trafic, as well as Dacia models; the turbocharged F8QT variant was used in Volvo 440/460/S40/V40 up to 2006. Fuel efficiency was around 6.8 L/100 km combined (8.2 L/100 km city, 6.0 L/100 km highway) in the 1997 Renault Kangoo, supporting its role in fleet and family vehicles. Early units adhered to Euro 0 standards, with later adaptations achieving Euro 1/2 compliance via minor tuning. A turbocharged evolution, the F8QT, debuted in 1991 to address demands for enhanced low-end torque in heavier models like the . Retaining the 1.9-liter displacement and , it incorporated a Garrett turbocharger with intercooling, reducing the to 20.5:1 while boosting output to 90 hp (66 kW) at 4,000 rpm and 175–180 Nm at 2,000 rpm. This variant powered the Renault 19 Turbo Diesel (1991–1996) and select models, offering improved acceleration without sacrificing the base engine's simplicity. Like its siblings, it targeted 5–7 L/100 km economy, though real-world figures varied with load. Both F8M and F8Q series engines were noted for durability in moderate use but prone to failures and cracking in high-mileage units (over 150,000 km), often linked to overheating from gasket leaks or cooling system neglect. These issues could lead to intrusion and reduced longevity if not addressed through regular , such as timely belt replacements and checks. The F8Q family later paved the way for direct-injection successors like the F9Q with common-rail systems in the late .

Turbocharged and modern diesels (F8QT, F9Q)

The F8QT variant marked an early advancement in turbocharged F-Type diesels, building on the F8Q family with and a fixed-geometry to deliver enhanced performance over naturally aspirated predecessors. This 1.9 L engine produced around 90 PS at approximately 4,000 rpm and 175–180 Nm of torque, enabling better low-end response in applications such as the Renault Mégane and /V40. It shared core block architecture with earlier F8-series diesels while incorporating turbocharging for improved efficiency without shifting to direct injection. The F9Q series represented a significant leap in modern diesel technology within the F-Type lineage, debuting in 1997 as Renault's inaugural direct-injection diesel engine and evolving into the dCi designation from 1999 to meet Euro 3 emission standards. Featuring a 1.9 L displacement (80 mm bore × 93 mm stroke) and a compression ratio of 18.3–19:1, it utilized a common-rail fuel injection system for precise control and reduced noise. Power outputs varied across variants from 80 to 130 PS, with representative examples including an early 90 PS version, a 2002 update at 110 PS, and a 2005 Euro 4-compliant iteration at 120 PS, often achieving peak torque of 200–300 Nm between 1,750 and 2,500 rpm—such as 100 PS at 4,000 rpm and 200 Nm in mid-range configurations. Later iterations incorporated variable-geometry turbocharging (VGT) to optimize boost across rev ranges, enhancing responsiveness and emissions compliance. Efficiency improvements were central to the F9Q's , with combined fuel consumption typically ranging from 4.5 to 6 L/100 km in passenger car applications, supported by the direct-injection system's atomization for cleaner combustion. In the , variants integrated diesel particulate filters (DPF) to further reduce particulate emissions under Euro 4 and later standards, contributing to overall environmental gains without sacrificing drivability. The engine employed a cast-iron block paired with an aluminum , incorporating elements for modest weight reduction while maintaining structural integrity. Known for , the F9Q has demonstrated robust in fleet use, often exceeding 300,000 km with regular maintenance including timely timing belt replacements and oil changes.

Petrol variants

1.7L and 1.8L engines (F1x–F3x, F7P)

The 1.7 L variants of the Renault F-Type engine family, designated F1N, F2N, and F3N, featured an inline-four configuration with displacements of 1,721 cc, bore and stroke dimensions of 81 mm × 83.5 mm, and SOHC with 8 valves. These engines were available in carbureted or multi-point forms, producing power outputs ranging from 73 PS to 95 PS depending on the specific code and application. For instance, the F2N variant delivered 85 PS at 5,500 rpm and 135 Nm of at 3,000 rpm in certain configurations. Compression ratios typically fell between 9.2:1 and 9.7:1 across the series, contributing to their efficient operation in compact vehicles of the era. The 1.8 L F3P engine, with a displacement of 1,794 cc (bore and stroke 82.7 mm × 83.5 mm), represented an evolution for higher-output applications, utilizing single-point and producing approximately 112 PS at 5,500 rpm with 160 Nm of at 4,250 rpm. It powered models like the , offering improved mid-range performance over the 1.7 L units while maintaining the cast-iron block and SOHC 8-valve architecture. Later iterations of the F3x series incorporated variable intake manifolds to optimize airflow and delivery across rev ranges. The F7P marked a significant advancement as a 1.8 L DOHC 16-valve variant with 1,764 cc displacement (82 mm × 83.5 mm), introduced in 1988 for sportier models such as the 16V. It generated 140 PS at 6,250 rpm and 165 Nm at 4,250 rpm, with a extending to 7,000 rpm to support its high-revving character. These engines shared common traits like smooth power delivery but were noted for increased oil consumption in higher-mileage examples due to wear on rings and seals. This paved the way for displacement increases to 2.0 L in subsequent F-Type developments for enhanced performance.

2.0L engines (F4R, F5R, F7R)

The F7R engine, introduced in 1993, represented an early high-performance variant of the 2.0L F-Type petrol lineup, featuring a naturally aspirated 16-valve DOHC configuration designed for the Williams hot hatch. It displaced 1,998 cc with a bore of 82.7 mm and stroke of 93 mm, producing 150 PS (110 kW) at 6,000 rpm and 175 Nm of torque at 4,500 rpm, enabling the lightweight to achieve spirited performance while maintaining a of 10.4:1. This engine built briefly on the architecture of the preceding 1.8L F7P but incorporated enhanced breathing for better high-rev power delivery. The F4R series expanded the 2.0L F-Type family in the late , offering both naturally aspirated and turbocharged options with (VVT) on select variants to optimize efficiency and performance across mid-size models like the Laguna and Mégane. Naturally aspirated F4R engines delivered 172 PS (127 kW) in performance trims, such as the Clio II RS 172, with torque around 200 Nm, while the turbocharged F4Rt variant pushed outputs higher. For example, the F4Rt produced 205 PS (151 kW) and 300 Nm in the Laguna GT, or 225 PS (165 kW) and 300 Nm in the early Mégane II RS through a twin-scroll and setup. These engines maintained the core F-Type iron block and aluminum head design but added and refined fuel mapping for smoother response. In high-output RS applications, like the Mégane RS 225, the F4Rt achieved 0-100 km/h in under 6.5 seconds, emphasizing the platform's tunability for dynamics. The F5R introduced direct injection (IDE) technology to the F-Type 2.0L range in 1999, marking Renault's pioneering effort as the first European manufacturer to produce a direct-injection for volume cars, fitted initially to the Mégane. This 16-valve unit, a modernized derivative of Mitsubishi's GDI system, displaced 1,998 cc and output 135-165 PS (99-121 kW) depending on tuning, with torque up to 210 Nm, using high for emissions control rather than operation. Production was limited to a few years due to challenges with the high-pressure fuel system, including regulator and pump wear that affected long-term durability, leading to its quick phase-out in favor of more reliable multi-point injection setups. Across the F7R, F4R, and F5R engines, the F-Type 2.0L variants demonstrated robust bottom-end durability from their shared cast-iron block construction, capable of handling boosts up to 275 PS in tuned RS configurations without major internal failures when maintained properly. However, all relied on timing belts that required replacement every 60,000-100,000 km to prevent catastrophic valve train damage if neglected, a common vulnerability in the series. Real-world fuel consumption ranged from 8-10 L/100 km in mixed driving, balancing performance with moderate efficiency for their era.

Applications and production

Vehicle applications

The Renault F-Type engine family powered a wide array of vehicles primarily from , but also extended to partner manufacturers through alliances, spanning compact cars, family sedans, SUVs, and commercial vans from the early to the mid-2010s. Introduced in 1982, these engines were integral to Renault's lineup during a period of expansion in and beyond, with diesel variants like the F8M and F9Q emphasizing for everyday models, while petrol options such as the F4R and F7R supported performance-oriented applications.

Renault Passenger Cars

Early models featured the naturally aspirated diesel F8M engine, which debuted in the sedans and hatchbacks from 1982 to 1994, offering economical propulsion for mid-size family vehicles. The F8M also appeared in the and first-generation van during this era. Transitioning to the 1990s, the F2N and F7P petrol engines equipped the , providing 1.7L and 1.8L options for compact saloons. The second-generation Clio (1998–2012) utilized the F4R petrol engine in RS variants, with outputs reaching up to 172 PS, alongside F9Q diesels from 1998 onward for efficient supermini performance. Similarly, the Mégane I and II (1995–2008) incorporated F9Q turbo diesels for broad market appeal and F4R petrol units in higher trims. The Laguna I and II (1994–2007) featured F4Rt turbocharged petrol variants alongside F9Q diesels, catering to midsize sedan and estate needs. Larger models like the Espace III (1996–2002) and Scenic I (1996–2003) relied on F9Q diesels for MPV versatility.

Sport Variants

Performance models highlighted the F-Type's adaptability, with the Clio Williams (1993–1994) employing the F7R 2.0L petrol engine tuned to 150 PS for rally-inspired hot hatch dynamics. The Mégane RS series (2004–2015) evolved the F4R engine to outputs of 225–275 PS across generations, establishing benchmarks in the compact performance segment.

Other Manufacturers

Through Renault's alliances, F-Type engines reached non-Renault vehicles. Volvo integrated the F2N and F3N 1.7L petrol units into the 340, 360, 440, and 460 models from the late 1980s to early 1990s. Nissan adopted select F9Q diesels in the Almera (1998–2006), enhancing its compact car's diesel offerings. Dacia used the F8Q diesel in older pickups and utility vehicles during the 1990s and early 2000s.

Commercial Vehicles

For utility purposes, the and Kangoo vans (1990s–2000s) commonly fitted F8Q and F9Q diesels, providing reliable torque for light commercial duties, with the Kangoo I spanning 1997–2007. The F9Q also powered the from 1997 to 2010. Overall, the F-Type family equipped over 50 vehicle variants across manufacturers from 1982 to 2015, underscoring its role in Renault's global strategy for diverse mobility solutions.

Manufacturing and phase-out

The Renault F-Type engine was primarily manufactured at the Cléon factory in , , with production commencing in 1982. This facility served as the central hub for the engine family, leveraging Renault's expertise in cast-iron block construction to support high-volume output for both petrol and diesel variants. By October 2023, the Cléon plant had assembled 14,520,000 F-Type engines, forming a key part of the site's cumulative achievement of producing 100 million engines and gearboxes since its opening in 1958. This total underscores the engine's role in powering a wide array of vehicles across global markets during its four-decade run. The phase-out of F-Type variants accelerated in the , driven by evolving emissions regulations and the shift toward more efficient powertrains. Diesel iterations, such as the F9Q, began transitioning to successors like the Energy dCi 130 in , as the older design reached its upgrade limits under tightening standards. Petrol models followed suit, with the F4R continuing in select applications until at least before full discontinuation. As of , the F-Type engine family is no longer in production, having been fully replaced by modern alternatives including the M-Type series for petrol engines (branded as TCe) and advanced diesel units compliant with Euro 6 and subsequent norms. Remaining uses in emerging markets tapered off around , marking the end of an era for this versatile inline-four platform. The F-Type's legacy endures through its contributions to Renault's manufacturing heritage at Cléon, even as the factory pivots to electric and hybrid components.

References

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