Austin-Healey 100

Infobox Automobile
name = Austin-Healey 100


manufacturer = British Motor Corporation
production = 1953–1959
class = Sports car
body_style = 2-door roadster
layout = FR layout
related = Austin A90

The Austin-Healey 100 is a sports car built between 1953 and 1959 by Jensen Motors for the British Motor Corporation. It was developed by Donald Healey to be produced in-house by Healey's company on Austin A90 Atlantic mechanicalscite book |last=Culshaw |first= |authorlink= |coauthors=Horrobin |title=Complete Catalogue of British Cars |year=1974 |publisher=Macmillan |location=London |id=ISBN 0-333-16689-2] . Healey built a single "Healey 100" for the 1952 London Motor Show, and the design impressed BMC, owner of Austin, so much that the firm decided to bring production in-house.

The "100" name comes from Donald Healey, who named it after the fact that this was one of the few cars of the era which could maintain convert|100|mi/h|km/h|abbr=on, as opposed to the Austin-Healey 3000, which is named for its 3000 cc engine.

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100-4 (BN1 and BN2)

Infobox Automobile generation
name = BN1/BN2 100-4


production = 1953–1956
14,634 producedcite book |last=Robson |first=G. |title=A-Z of British Cars 1945-1980|year=2006 |publisher=Herridge Books |location=Devon, UK |id=ISBN 1-9541063-9-3]
wheelbase = convert|90|in|mm|0|abbr=on
length = convert|151|in|mm|0|abbr=on
width = convert|60|in|mm|0|abbr=on
successor = Austin-Healey BN-4 100-6
assembly = Longbridge, England
West Bromwich, England
engine = 2660 cc I4
transmission = 4-speed manualProduction Austin-Healey 100s were finished at BMC's Longbridge plant alongside the A90 and based on fully trimmed and painted body/chassis units produced by Jensen in West Bromwich. The first 100s ("BN1"), were equipped with the same 90 hp (67 kW) engines and manual transmission as the stock A90 but the transmission was modified to be a three speed unit with overdrive on second and top. The 2660 cc I4 engine featured an undersquare convert|87.3|mm|in|1|abbr=on bore and convert|111.1|mm|in|1|abbr=on stroke.

Girling convert|11|in|mm|1|abbr=on drum brakes are fitted all round. Front suspension is independent using coil springs and at the rear is a rigid axle with semi elliptic leaf springs. The steering is by a cam and lever system.

These were built from summer 1953, and replaced by the BN2 model in 1955.

The BN2 came with a real 4-speed manual transmission, still with overdrive. Other features that distinguish the BN2 from the BN1 are the slightly larger front wheel arches, different rear axle and being the first 100 with optional two tone paint. The colour alternatives available to the 100 were: Reno Red, Spruce Green, Healey Blue, Florida Green, Old English White, Primrose Yellow, Black, and a limited number of Gunmetal Grey cars. A "100 M" (for Modified)package was developed as well, with 110 hp (82 kW) on tap. 1159 were made. The front suspension was stiffened and the bonnet gained louvres, along with a bonnet belt. The 100M engine also sported a cold air box to increase air flow to the carburettors, as well as 1 3/4 SU carbs. Although the factory produced 100Ms, dealers were also able to offer 100M upgrades.

Another variety was the 55 aluminium-bodied "100S" (for Sebring) models with 132 hp (98 kW). The cast iron cylinder head was replaced by one made from aluminium and the overdrive unit was not fitted to the gearbox. Dunlop disc brakes were fitted front and rear. To keep weight to a minimum there were no bumpers or hood (convertible top), a smaller grille and the windscreen was plastic. The 100S was also the first production car in the world to sport disc brakes at both the front and rear [Lawrence, Mike. "A to Z of Sports Cars 1945-1990". Bideford: Bay View Books, 1991] . The car was approximately convert|200|lb|abbr=on lighter than standard. 37 100S models are believed to have survived. The majority of all 100S were two-toned white with blue sides. However, a handful of cars where ordered in Spruce Green, Reno Red and one single black 100S.

A BN1 tested by The Motor magazine in 1953 had a top speed of convert|106|mph|km/h|abbr=on and could accelerate from 0-convert|60|mph|km/h|abbr=on in 11.2 seconds. A fuel consumption of convert|22.5|mpgimp|L/100 km mpgus was recorded. The test car cost £1063 including taxes.cite journal | authorlink = Unsigned |title = The Austin-Healey "Hundred" Road Test| journal =The Motor| volume = | pages = | date = September 16 1953]

100-6 (BN4 and BN6)

Infobox Automobile generation
name = BN4 100-6


production = 1956-1959
14,436 produced
wheelbase = convert|92|in|mm|0|abbr=on
length = convert|157.5|in|mm|0|abbr=on
width = convert|60|in|mm|0|abbr=on
height = convert|50|in|mm|0|abbr=on
successor = Austin-Healey 3000
assembly = Abingdon, England
Longbridge, England
engine = 2639 cc "C-Series" I6The final "100" models, 1956's "BN4" (2+2 seats) and 1958's "BN6" (2 seats) were six-cylinder 100-6 cars.

To make room for the occasional seats the wheelbase was increased by convert|2|in|mm|1|abbr=on. The bonnet had a built in air scoop and the windscreen no longer could be folded down.

The cars used a tuned version of the BMC C-Series engine previously fitted to Austin Westminster which at first produced 102 bhp increasing to 117 bhp in 1957 by fitting a revised manifold and cylinder head. The overdrive unit became an option rather than a standard fitting.

In late 1957 production was transferred from Longbridge to the MG plant at Abingdon.

A 117 bhp BN6 was tested by The Motor magazine in 1959 had a top speed of convert|103.9|mph|km/h|abbr=on and could accelerate from 0-convert|60|mph|km/h|abbr=on in 10.7 seconds. A fuel consumption of convert|20.8|mpgimp|L/100 km mpgus was recorded. The test car cost £1307 including taxes of £436.cite journal | authorlink = Unsigned |title = The Austin-Healey 100-Six Two-seater| journal =The Motor| volume = | pages = | date = April 8 1959]

References

*cite book | author=Ray Bonds | title=The Illustrated Directory of Sports Cars | publisher=Motorbooks | year=2003 | id=ISBN 0-7603-1420-9

External links

* [http://www.healey.org/ Austin-Healey Club USA]
* [http://www.healeydata.com www.healeydata.com] Volunteer register with records and photos of the 100