1955 Austin-Healey 100M

Automotive developer and racer Donald Healey, looking to reach a broader sports car market, developed this iconic British sports car in the early 1950s using a 4-cylinder Austin A90 engine. An initial success, British Motors Corporation saw the value of a strong competitor to the Triumph TR Series and took over production.

The Austin-Healey 100 made its debut at the 1952 London Motor Show. The attractive little car caught the attention of then acting director of Austin, Leonard Lord, who wanted to add 'Austin' to the name through a partnership deal, proposed by Donald Healey. After funding was in place, production of the Austin Healey 100-4 began, from 1953 until 1956. These little roadsters were successful both on the road and the track, being campaigned at circuits worldwide by both factory racecars and privateer entrants. Two mildly modified examples were entered in the Le Mans 24-Hour Race, finishing in 12 and 14th overall, and second in class. The name 'Le Mans' was later used for a bolt-on tuning kit offered through Austin-Healey dealers, allowing private owners to have to cars brought to a specification approaching that of the works entries. The kit added a pair of 1¾-inch SU HD6 carburetors plus special inlet manifold and cold air box, high-lift camshaft, stronger valve springs and distributor with alternative ignition advance curve. The kit brought horsepower from the standard 90 to 100 bhp.

Beginning in October of 1955, the conversion as available from the factory on the successor BN2 model in the form of the 100M. The 100M added the LeMans kit plus high-compression pistons, stiffer front anti-roll bar, special Armstrong front dampers, and a louvered bonnet. Power rose to 110 bhp and top speed was rated at 120 mph.

The exact number of BN1s converted by their owners is not known. However, 1,159 examples - mostly BN2s - were built or later modified to 100M specification between 1955 and 1956. Of those, approximately 640 were completed at the factory, and around 544 of which were exported to the USA. It is believed that around 200 survive.

The 1955 Austin-Healey 100 Sport Roadster had a base price of nearly $3,000. The 100M specification brought the price to almost $3,300 while the 100S (Sebring) was $5,000. The 100S was a racing version had an aluminum body without bumpers, a modified engine with Weslake cylinder heads, and all-around disc brakes. Just 50 examples of the 100S were built in 1955. The highly tuned engine offered 132 horsepower and 150 lbs-ft of torque.

Few changes were made to the 1955 Healey except for the addition of a four-speed gearbox in place of the original three-speed unit. Standard equipment included knock-on wire wheels, twin carburetors, 4-speed with manual-activated overdrive, and a defroster.


by Daniel Vaughan | May 2019

Related Reading : Austin-Healey BN2 100M History

The Austin Healey 100 was introduced in October of 1952 at the Earls Court Motor Show. The first Austin Healey 100s were known as 100-4 or BN1. The name 100 came-about by being able to break the 100 mph barrier. The BN also had meaning. The B represented the engine class which meant it had between 2000 and 3000 cc. The N represented the body-style configuration, two-seat and open-top. The 100 was....
Continue Reading >>

1955 Vehicle Profiles

1955 Austin-Healey 100M vehicle information

Sport Roadster

Chassis Num: BNIL/225762
Engine Num: IB225762M

This 1955 Austin-Healey 100M LeMans Roadster was offered for sale at the 2007 Christies auction of 'Exceptional Motor Cars at the Monterey Jet Center.' It is black with white coves with red interior. Power is from a four-cylinder engines breathing ....[continue reading]

1955 Austin-Healey 100M vehicle information

Sport Roadster

This Austin Healey sports car was created by Donald Healey in 1953, using a 2.7-liter, four cylinder Austin A-90 engine. The 100M was a special enhanced version of the car offered for just one year, 1955-1956. Modifications included a high compress....[continue reading]

1955 Austin-Healey 100M vehicle information

Sport Roadster

This Austin Healey is a factory built LeMans 100M Roadster. It is one of 640 factory built cars and currently less than half have survived. This car is entered into the 'Worldwide 100M LeMans Registry', categorized as an FC Top, Gold Level 'Registry ....[continue reading]

1955 Austin-Healey 100M vehicle information

Sport Roadster

This car was displayed at the 1955 Earl's Court Motor Show to introduce the Austin Healey 100M. Its distinctive Black over Pink livery and interior were chosen by the car's designer, Gerry Coker, along with Donald Healey. It is the only Austin Healey....[continue reading]

Sport Roadster
Chassis #: BNIL/225762 
Sport Roadster
 
Sport Roadster
 
Sport Roadster
 


Mille Miglia Vehicles

Concepts by Austin-Healey

Similarly Priced Vehicles



Recent Vehicle Additions

Related Automotive News

Jaguar Classic Creates Tailor-Made XK120 For Male Model David Gandy

Jaguar Classic Creates Tailor-Made XK120 For Male Model David Gandy

Jaguar Classic experts have restored 1954 XK120 to customer and life-long Jaguar enthusiast David Gandys bespoke specification 2,700-hour rebuild includes unique upgrades to turn standard model int...
THREE TIMES FOUR: RM SOTHEBY'S BRINGS ASTON MARTIN TRINITY TO LONDON SALE WITH DB4GT, DB4 CONVERTIBLE AND DB4 SERIES II COUPÉ

THREE TIMES FOUR: RM SOTHEBY'S BRINGS ASTON MARTIN TRINITY TO LONDON SALE WITH DB4GT, DB4 CONVERTIBLE AND DB4 SERIES II COUPÉ

RM Sothebys assembles holy trifecta of DB4s for its 10th anniversary London sale, 7 September at Battersea Evolution Trio led by original one-of-75 DB4GT, immaculate concours-standard Series V...
1938 Alfa Romeo 8C 2900B Touring Spyder Epitomizes The Elegance at Hershey

1938 Alfa Romeo 8C 2900B Touring Spyder Epitomizes The Elegance at Hershey

HERSHEY, PA - The theme for this years Elegance at Hershey is Celebration of Speed. After deciding upon the overall theme, One of the first decisions we made was to choose an automobile that...
Concours d'Elegance of America at St. John's : Best of Show

Concours d'Elegance of America at St. John's : Best of Show

The Concours dElegance of America, established in 1978, featured over 300 significant automobiles on the beautiful green at the Inn at St. Johns in Plymouth, Michigan. This years featured classes...
ANTICIPATION BUILDS AS RARE CARS ARE CONSIGNED TO RM'S FLAGSHIP UK SALE

ANTICIPATION BUILDS AS RARE CARS ARE CONSIGNED TO RM'S FLAGSHIP UK SALE

RM Auctions annual London sale returns to Battersea Evolution, 31st October, 2012 Now in its sixth year, the London sale is one of Europes consistently best performing collector car auctions U...

© 1998-2020. All rights reserved. The material may not be published, broadcast, rewritten, or redistributed.


Vehicle information, history, and specifications from concept to production.

Follow ConceptCarz on Facebook Follow ConceptCarz on Twitter RSS News Feed

Conceptcarz.com
© 1998-2020 Conceptcarz.com Reproduction or reuse prohibited without written consent.