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     4½-Litre 'Blower' Birkin Monoposto
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  Bentley 4½-Litre 'Blower' Birkin Monoposto

  Article Image gallery (22) HB3402 Specifications  
Click here to open the Bentley 4½-Litre 'Blower' Birkin Monoposto gallery   
Country of origin:Great Britain
Produced from:1929 - 1931
Numbers built:one-off
Designed by:Reid Railton
Author:Wouter Melissen
Last updated:June 25, 2012
Download: All images

Configuration Straight 4
Location Front, longitudinally mounted
Construction cast-iron block and head
Displacement 4,442 cc / 271.1 cu in
Bore / Stroke 100.5 mm (4 in) / 140.0 mm (5.5 in)
Valvetrain 4 valves / cylinder, SOHC
Fuel feed 2 SU HVG5 Carburettors
Aspiration Roots-Type Supercharger
Power 240 bhp / 179 KW
BHP/Liter 54 bhp / liter

Body aluminium body
Chassis steel ladder frame
Front suspension rigid axle, semi-elliptic leaf springs, friction dampers
Rear suspension live axle, semi-elliptic leaf springs, friction dampers
Steering worm and roller
Brakes drums, all-round
Gearbox 4 speed Manual
Drive Rear wheel drive

Wheelbase / Track (fr/r) 3,302 mm (130 in) / N/A / N/A

Past sales

Suggested reading
  • Road & Track (May, 1981)
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  Article Image gallery (22) HB3402 Specifications