Bentley 4½ Litre ‘Blower’ 

  • 1929-1931
  • 175 HP 4.4L
  • 130 mph
 
Later in the year more 4½ Litre Bentleys were fitted with Birkin's blower system and one placed second in the RAC Tourist Trophy, but they never won a race.
by www.supercars.net
It was the vision and product of Sir Henry Ralph Stanley 'Tim' Birkin who persuaded Bentley to produce 50 examples of the model.
by www.supercars.net

Road Tests Real world tests of the Bentley 4½ Litre ‘Blower’

Top speed

4½ Litre ‘Blower’
130 mph
Veyron
253 mph
Veneno
220 mph

Data points Key details of the Bentley 4½ Litre ‘Blower’

Number built

4½ Litre ‘Blower’
55 cars
LaFerrari
499 cars
Veyron
300 cars

Horsepower

4½ Litre ‘Blower’
175 HP
Veyron
987 HP
LaFerrari
950 HP

In The News From around the web

10
Dec

Bentley 4½ Litre ‘Blower’

www.supercars.net
With it's front mounted supercharger, the became one of Walter Owen Bentley's quintessential British sportscars.
Excessive weight of the car due to huge brakes, large chassis & a bulky rear axle put the car in a class of its own.

Specifications Full list of technical specs

general

Brand Bentley
Type of car Production car
Year 1929-1931
Number built 55 cars

transmission

Drivetrain RWD
Gearing Traditional
# of gears 4 gears

suspension, wheels & brakes

Front brakes Disc
Rear brakes Disc
Front wheels 533/? 152
Rear wheels 533/? 152

physical dimensions

Curb weight 4,250 lb
Width 68.5 in
Height 63 in
Length 172 in
Front track width 54.5 in
Wheelbase 130 in

road tests

Top speed 130 mph

power & handling

Power-to-weight ratio 24.29 lb/hp
Maximum hp 175 HP @ 3,500 RPM
Steering system Rack and pinion

engine

Displacement 4,398 cc
Air compressor Supercharger
Fuels Gas
Bore/stroke 3.94 in / 5.51 in
Valvetrain Single overhead camshaft (SOHC)
Valves per cylinder 4 valves
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