Weslake V12 engine

Weslake V12 engine
Overview
Manufacturer
  • Weslake (Type 58, WRP-190)
  • All American Racers (Mark-1A)
  • JHS Engines Ltd. (BRM Type 290)
Production1966–1992
Layout
Configuration60° V12
Displacement
  • 2,997 cc (182.9 cu in) (Type 58)
  • 2,995 cc (182.8 cu in) (WRP-190, Mark-1A)
  • 3,494 cc (213.2 cu in) (BRM Type 290)
Cylinder bore
  • 72.8 mm (2.87 in) (TYPE 58)
  • 75 mm (2.95 in) (WRP-190, Mark-1A)
  • 81 mm (3.19 in) (BRM Type 290)
Piston stroke
  • 60 mm (2.36 in) (TYPE 58)
  • 56.5 mm (2.22 in) (WRP-190, Mark-1A)
  • 56.5 mm (2.22 in) (BRM Type 290)
ValvetrainGear-driven DOHC, four-valves per cylinder
Compression ratio11.5:1-12.5:1
Combustion
Fuel systemLucas fuel injection
Fuel typeGasoline
Oil systemDry sump
Output
Power output364–630 hp (271–470 kW)
Torque output243–300 lb⋅ft (329–407 N⋅m)[1]
Dimensions
Length
  • 737 mm (29.0 in) (Type 58, Mark-1A)
  • 805 mm (31.7 in) (WRP-190)
[2]
Width
  • 483 mm (19.0 in) (Type 58, Mark-1A)
  • 485 mm (19.1 in) (WRP-190)
Height
  • 546 mm (21.5 in) (Type 58, Mark-1A)
  • 559 mm (22 in) (WRP-190)
Dry weight
  • 177 kg (390 lb) (Type 58)
  • 175 kg (386 lb) (WRP-190)
  • 150 kg (331 lb) (Mark-1A)

Weslake V12 engine refers to two families of naturally-aspirated, four-stroke, 60° V12 racing engines, both initially designed by Weslake and produced and developed by Weslake and others between 1966 and 1992.[3][4][5][6] The engines were raced in Formula One (F1) and sports car endurance racing, while various plans for Weslake V12-powered road cars all came to nothing.

  1. ^ Cite error: The named reference dlg-p351 was invoked but never defined (see the help page).
  2. ^ Cite error: The named reference forix-oct2020 was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference revs-1967aar was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference dt-t1g was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference ucp-eagle was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference ucp-eaglespecs was invoked but never defined (see the help page).