Renault EF-Type engine

EF-Type engine
Overview
ManufacturerFrance Renault Sport
DesignerBernard Dudot
François Castaing (base design)
Production1977–1986
Layout
Configuration90° V-6
Displacement1.5 L (1,491.7 cc)
1.5 L (1,493.6 cc)
Cylinder bore86 mm (3.39 in)
80.1 mm (3.15 in)
Piston stroke42.8 mm (1.69 in)
49.4 mm (1.94 in)
Compression ratio7.0:1-7.5:1
Combustion
TurbochargerGarrett or KKK
Fuel systemElectronic fuel injection
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output510–1,320 bhp (380–984 kW; 517–1,338 PS)
Torque output290–660 lb⋅ft (393–895 N⋅m)[1]
Dimensions
Dry weight179 kg (394.6 lb)[2]
Chronology
PredecessorCH
SuccessorRS

The EF-Type was a Turbocharged 90° V6 racing engine developed by Renault Sport, the engine was used by Equipe Renault Elf in Formula One from 1977 to 1985. This engine derived from the CH series designed by François Castaing, the F1 engine was developed by Bernard Dudot.

Renault's decision to use its 1500 cc V6 turbo engines in F1 was one of the boldest decisions ever taken in the sport. In nine full seasons competing against normally aspirated 3000 cc engines, they gave an excellent account of themselves, with:

  • One World Championship Runner-Up title in 1983.
  • 20 race wins (15 with Renault, 5 with Lotus).
  • 50 pole positions (32 with Renault, 18 with Lotus).
  • 51 podium finishes (25 with Renault, 20 with Lotus, six with Ligier).

Ultimately, as a result of their success, all F1 teams adopted turbo engines in the 1985 season.

  1. ^ "Spicer Horsepower and Torque Calculator".
  2. ^ "Engine Renault • STATS F1".