Renault EF-Type engine

This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. Find sources: "Renault EF-Type engine" – news · newspapers · books · scholar · JSTOR (February 2022) (Learn how and when to remove this message)

EF-Type engine
Overview
Manufacturer	Renault Sport
Designer	Bernard Dudot François Castaing (base design)
Production	1977–1986
Layout
Configuration	90° V-6
Displacement	1.5 L (1,491.7 cc) 1.5 L (1,493.6 cc)
Cylinder bore	86 mm (3.39 in) 80.1 mm (3.15 in)
Piston stroke	42.8 mm (1.69 in) 49.4 mm (1.94 in)
Compression ratio	7.0:1-7.5:1
Combustion
Turbocharger	Garrett or KKK
Fuel system	Electronic fuel injection
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	510–1,320 bhp (380–984 kW; 517–1,338 PS)
Torque output	290–660 lb⋅ft (393–895 N⋅m)[1]
Dimensions
Dry weight	179 kg (394.6 lb)[2]
Chronology
Predecessor	CH
Successor	RS

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.