Bentley Speed 6 Works Racing Car 

  • 1929-1930
  • 200 HP 6.6L
  • 125 mph
Drawing upon experience gained from working at the Great Northern Railway and designing airplane engines, Walter Owen Bentley included such characteristics as aluminum pistons, dry-sump lubrication, twin spark ignition and an advanced valve train in his engines.
It was well known that too much use of the supercharger would blow the Mercedes engine and Barnato was playing his part to perfection.

Road Tests Real world tests of the Bentley Speed 6 Works Racing Car

Top speed

Speed 6 Works Racing Car
125 mph
253 mph
220 mph

Data points Key details of the Bentley Speed 6 Works Racing Car

Number built

Speed 6 Works Racing Car
3 cars
300 cars
4 cars


Speed 6 Works Racing Car
200 HP
987 HP
750 HP

In The News From around the web


Bentley Speed 6 Works Racing Car
However we can say the Works car received lighter bodies, 25 gallon gas tanks, Bentley & Draper double front hydraulic shock absorbers, hotter camshafts, heavy front axle beams with integral jacking pads, special headlamp support bracket castings with bearings for the Perrot shafts, and sometimes a central Marchal headlight for night runs.
For the 1928 season, Bentley decided to prepare a works version of the Speed 6 to enter the major races that year and it became Bentley's definitive race car.

Specifications Full list of technical specs


Brand Bentley
Type of car Race car
Year 1929-1930
Number built 3 cars


Drivetrain RWD
Gearing Traditional
# of gears 4 gears

suspension, wheels & brakes

Front brakes Disc
Rear brakes Disc

physical dimensions

Wheelbase 152.5 in

road tests

Top speed 125 mph

power & handling

Maximum hp 200 HP @ 3,500 RPM
Steering system Rack and pinion


Displacement 6,597 cc
Air compressor None
Fuels Gas
Compression ratio 5.3:1
Bore/stroke 3.94 in / 5.51 in
Valves per cylinder 4 valves
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