Engine Renault L7X

3.0-liter 24-valve Renault L7X engine was introduced in 1997, when a line of V6 engines called ESL replaced the outdated PRV. This engine was installed on such Renault models as Safrane, Espace, Laguna and Clio V6.

In 1997, a successor to the popular French V6 type PRV was introduced. The engine was developed and assembled by the joint efforts of Renault and Peugeot-Citroen engineers at the same plant in the city of Douvrin. The new unit was completely made of aluminum, with a characteristic camber angle of 60 degrees for V-shaped sixes, and not 90 like its predecessor.

This time, many versions were not fenced, the engine was produced only in a 3.0-liter 24-valve version with 194 hp. For Peugeot-Citroen models, a special modification was made with a phase regulator at the inlet of 207 and 211 hp.

Standing apart from everyone is one of the hottest compact hatchbacks of the time, the Clio V6. Huge for such a small car, the power unit was placed instead of the rear seats. As a result of a small tuning, its power was 230 hp, and after restyling in 2003, all 255 hp.

Specifications

Production years since 1997
Displacement, cc 2946
Fuel system injector
Power output, hp 190 – 194
230 – 255 (Clio)
Torque output, Nm 267
300 (Clio)
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 87
Piston stroke, mm 82.6
Compression ratio 9.6
11.4 (Clio)
Hydraulic lifters yes
Timing drive belt
Phase regulator since 2000
Turbocharging no
Fuel type petrol
Euro standards EURO 3/4
Engine lifespan, km ~300 000
Weight, kg 200

Disadvantages of the Renault L7X engine

  • Since the engine has several revisions, its ignition system is slightly different: in one case, six individual coils, and in the other, a triple block with six leads. However, engine tripping is most often associated with coils, regardless of performance.
  • An unreliable thermostat and air pockets in the cooling system are often the cause of overheating of the motor. Carefully monitor the readings of the instruments, as the control unit quickly fails from high temperatures.
  • Owners are often overcome by minor breakdowns in the electrical part. In the vast majority of cases, this is due to the fault of either an oxidized terminal, or a chip that has fallen out of the connector.

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