Austin-Healey 100/4 BN2 Sports Car

A evaluate of The Austin-Healey 100/Four BN2 Sports activities Automotive, overlaying improvement, essential options, and technical knowledge of this the primary mannequin within the vary.

On this Article, I supply a nostalgic have a look at the Austin-Healey 100/Four BN2, one in all an elite group of traditional automobiles, which was manufactured throughout the interval 1955 to 1956.

In August 1955, manufacturing of the Austin-Healey 100/Four BN1 sports activities automotive was lastly dropped at an in depth after 10,030 automobiles had been constructed.

Though manufacturing of its successor, the 100/Four BN2, started that very same month, it was not formally launched till offered on the London Motor Present in October of that yr.

Just like the BN1, it was powered by a 2.6 liter, 4-cylinder in line, overhead valve engine.

Nonetheless, the BN2 now featured:

  • Enlarged drum brakes all spherical
  • The unique three velocity gearbox, with first gear blocked off, was now changed with a 4 velocity unit, along with overdrive on the highest two gears
  • Entrance wheel arches that had been elevated in measurement to a small extent
  • A unique rear axle
  • A two tone colour scheme for the physique panels was an non-compulsory further

These non-compulsory colour mixtures included: White and Black, Reno Crimson and Black, Healey Blue and White, Black and Reno Crimson, Florida Inexperienced and White.

Austin-Healey 100S

Designed particularly for rallying and the race monitor, the 100S sports activities automotive, the place "S" referred to Sebring, produced 132 bhp at 4700 rpm.

Showing in 1955, it was constructed with aluminum physique panels.

A complete of 50 automobiles had been constructed, along with an additional 5 works automobiles that had been hand constructed on the Warwick manufacturing unit.

As a substitute of a forged iron head, the 100S used one made from aluminum.

To minimise weight, there was no overdrive unit, hood, or bumpers, a smaller grille was used, and the windscreen was made from plastic.

It was the primary manufacturing automotive to incorporate Dunlop disc brakes all spherical.

The results of these measures was a weight saving of some 200 kilos.

Almost all of the 100S's physique panels had been painted with the 2 tone American racing colours of White and Lobelia Blue, though one automotive was painted solely in Black.

The 100S competed at many well-known racing venues, comparable to Le Mans, Sebring, and Mille Miglia.

It was, in reality, a reproduction of a particular works automotive, pushed by Stirling Moss, by which he completed in third place within the 1954 Sebring twelve hour race.

Austin-Healey 100M

Following on from the 100S, essentially the most illustrious and fascinating early variant of the BN2 was the uprated 100M Le Mans sports activities automotive.

Showing in 1956, it provided higher efficiency and a wide range of distinctive exterior options derived from expertise gained on the race monitor.

100M Specification included:

  • The bonnet contained louvered vents with a leather-based retaining strap
  • Two bigger 1.75 inch H6 SU carburettors
  • Wire wheels that had been painted in silver
  • A low, adjustable windshield which could possibly be folded flat for the sporty driver
  • Compression ratio elevated from 7.5 to eight.1: 1
  • A excessive carry camshaft and excessive compression pistons
  • A chilly air field and air tube to enhance air circulation to the carburettors
  • A low restriction consumption manifold
  • A modified distriutor
  • Stiffened unbiased entrance suspension utilizing wishbones and coil springs, and an anti roll torsion bar
  • Stay rear axle with leaf springs, and an anti motion monitor bar

These modifications elevated output from 90 bhp of the BN2 to 110 bhp, with 154 ft / lb of torque.

Some 70% of those automobiles had been painted within the two tone system, together with two distinctive specialties – one in White and Crimson, and one other in Black and Pink, the latter being utilized in a show capability on the 1955 London Motor Present.

In whole, there have been 640 manufacturing unit made 100M's, and all had been BN2 fashions from 1956.

Other than the excessive compression pistons, the parts used to create the 100M had been accessible as a Le Mans Modification Equipment, which may exchange current parts in a BN1 or BN2, so rising the output to 100 bhp.

Donald Healey's Warwick manufacturing unit upgraded some 519 further automobiles with Le Mans kits after they’d left the manufacturing line.

Since these kits, and any parts, had been accessible from BMC, then any modifications could possibly be achieved by both an Austin seller or the client themselves.

Whole 100M's constructed at each Longbridge and Warwick was 1,159.

Manufacturing of the BN2 led to August 1955 when it was changed by the Austin-Healey 100-6.

This marked the top of the Austin-Healey 100/Four BN2

Maybe this stroll down reminiscence lane may need answered, or no less than make clear, a potential query:

Which Austin-Healey Sports activities Automotive is Your Favourite?

Nonetheless, ought to this query nonetheless stay unanswered, I might be reviewing, in some element, in future articles inside this web site, the whole vary of Austin-Healey sports activities automobiles which had been featured within the memorable period spanning 1953 to 1972.

I hope you be part of me in my nostalgic travels "down sports activities automotive reminiscence lane".


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