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Austin Healey 100 M 1.0

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About This File

Author : Art-Tech-uk (Si)

One of the cheapest ways to get to 100 mph in the 1950s was to buy an Austin Healey 100. Aptly named, the 100 easily reached speeds of over 100mph, when it was launched in 1952. Production started in 1954. For 1955 major changes were made to the drivetrain with an all new gearbox and further improvements were carried out. Especially for racing purposes Austin Healey built an S version of the 100 with an alloy body and tweaked engine.

The nimble and powerful 100 S proved a huge success. To bring some of the 'S-magic' to the road Austin Healey offered a Le Mans special package for the 100 road car. 100s fitted with the Le Mans package were referred to as 100M. Engine modifications like a higher compression ratio, bigger SU carbs and high-lift camshafts, saw power increase from 90 bhp to 110 bhp for the M. The factory equipped 1100 100s with the Le Mans package and another 100 were later modified.

By 1956 the 4 cylinder 100 was replaced by a more powerful 6 cylinder variant.

Specs:

Country of origin - England

Produced from - 1955 - 1956

Numbers built - 1100 + 100

Engine:

Configuration - Straight 4

Location - Front, longitudinally mounted

Construction - iron block and head

Displacement - 2.66 liter / 162.3 cu in

Bore / Stroke - 87.4 mm (3.4 in) / 111.2 mm (4.4 in)

Compression - 8.1:1

Valvetrain - 2 valves / cylinder, OHV

Fuel feed - 2 SU H6 Carburettors

Aspiration - Naturally Aspirated

Drivetrain:

Chassis/body - steel body on ladder frame

Front suspension - wishbones, coil springs, anti-roll bar

Rear suspension - live axle, semi-elliptic leaf springs

Steering - cam and peg

Brakes - drums, all-round

Gearbox - 4 speed Manual

Drive - Rear wheel drive

Dimensions:

Weight - 1082 kilo / 2385.4 lbs

Length / Width / Height - 3759 mm (148 in) / 1422 mm (56 in) / 956 mm (37.6 in)

Wheelbase / Track (fr/r) - 2286 mm (90 in) / 1245 mm (49 in) / 1290 mm (50.8 in)

Performance figures:

Power - 110 bhp / 82 KW @ 4500 rpm

Torque - 217 Nm / 160 ft lbs @ 2500 rpm

BHP/Liter - 41 bhp / liter

Power to weight - 0.1 bhp / kg

Top Speed - 175 km/h / 109 mph

0-60 mph - 9.6 s




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