Austin-Healey 100

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1954 Austin-Healey 100 belonging to Angela & Chris, members of Austin-Healey Club UK Eastern Centre

The Austin-Healey 100 was the car that introduced the Austin-Healey Marque. This very British sports car used an Austin A90 engine and modified Austin A90 gearbox, and its all-steel body was mounted on a steel box section chassis. In 1955 improvements were made to the car which included a four-speed overdrive gearbox, a more highly tuned version of the A90 engine, and a louvred bonnet. This car was sold as the 100M. The remaining standard 100 versions were also fitted with the 4-speed overdrive gearbox in 1955. A remarkable performance in the 1953 Sebring 12-hour race by a special 100 led to the S (Sebring) version being produced in 1954. These cars featured aluminium bodywork, alloy cylinder head and all round disc brakes. Only 50 S versions were produced. Demand for the 100 remained strong throughout its production and over 14500 cars were built. It was replaced by the 100/6 in October 1956. It is worth noting that Austin-Healey models are sometimes referred to by their factory designations and these appear in brackets in the table below.


 

Specifications

Model

100 (BN1/BN2)

100 M

100 S (AHS)

Years Produced

1952-1956

1955-1956

1954-1956

Body Type

Steel body, steel chassis

Steel body, steel chassis

Alloy body, steel chassis

Length

12ft 7in

12ft 7in

12ft 7in

Width

5ft 0.5in

5ft 0.5in

5ft 0.5in

Weight

2150lb

2385lb

2115lb

Engine

4 cyl inline 2660cc

4 cyl inline 2660cc

4 cyl inline 2660cc

Power

90 bhp @ 4000 rpm

110 bhp @ 4500 rpm

132 bhp @ 4700 rpm

Torque

144lb ft @ 2500 rpm

160lb ft @ 2500 rpm

168lb ft @ 2500 rpm

Gearbox

3 speed o/drive

4 speed o/drive

4 speed o/drive

Driven Wheels

Rear

Rear

Rear

Brakes

Drums all round

Drums all round

Drums all round

Front Suspension

Independent coils spring and wishbone

Rear Suspension

Leaf Spring, live axle

Leaf Spring, live axle

Leaf Spring, live axle

 

Performance (approximate figures)

Model

100 (BN1/BN2)

100 M

100 S (AHS)

Top Speed

105 mph

109 mph

120 mph

0-60 mph

11.0 seconds

9.5 seconds

7.8 seconds

Fuel Consumption

22 mpg

20 mpg

18 mpg

 

Factory Designations for "Big Healey" Models

BN1

100/4 1952-55 2 seater, 3 speed o/drive gearbox

BN2

100/4 1959-56 2 seater, 4 speed o/drive gearbox

AHS

100M 1954-56 2 seater

BN4

100/6 1956-1959, 2+2 seating

BN6

100/6 1958-1959, 2 seater

BN7

3000 Mk I 1959-61 & Mk II 1961-62, 2 seater

BT7

3000 Mk I 1959-61 & Mk II 1961-62, 2+2 seating

BJ7

3000 Mk II 1962-63, 2+2 seating

BJ8

Phase 1 3000 Mk III 1964, 2+2 seating

BJ8

Phase 2 3000 Mk III 1964-68, 2+2 seating

 

Useful Links

Austin-Healey Club USA

Austin-Healey 100 books at Amazon.co.uk

Gallery