Austin Healey 100 group S (1953)
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Specifications

10030 units built as BN1 (5/1953 till 8/1955)
4604 units built as BN2 (8/1955 till 7/1956)
640 unit built as 100M (11/1955 to 7/1956)
55 units built as 100S, 5 five factory cars (1953-54) with SPL prefix, and 50 customer cars with AHS prefix (february to November 1955)
8391 units built as BN4 or BN6 (8/1956 to 7/1959)

Click here and here and here for BN1 '53
Click here and here for BN2 '55

Austin A90, straight 4 cyl, 4 stroke, petrol engine
2660 cc
87.3 x 111.1 mm
7.5:1
100M: 8.1:1
100S: 8.3:1
90 HP / 67 kW @ 4500 rpm
203.4 Nm / 150 ft lbs @ 2000 rpm
100M 111 HP / 82 kW @ 4500 rpm
100S 133 HP / 98 kW @ 4700 rpm, 168 lb.ft
side camshaft with overhead valves (OHV), 2 valves / cyl - 8 valves total. Silicone chromed steel inlet valves and exhaust valves in 'KE965' steel
2 x SU H4 carburetors
100S: 2 x SU H6 carburetors
wet sump

BN1, 3 speed manual gearbox with overdrive on 2nd and 3rd gear
BN2, 4 speed manual gearbox with overdrive on top gear

final drive, 4.125/1
Single-Plate Borg & Beck clutch
100S aluminium bodyshell
front suspension, Double Wishbones with coil springs, Hydrualic Shock Absorbers
rear suspension, Live Axle with Semi-Elliptical Leaf Springs, Hydrualic Shock Absorbers
girling drum brakes all around,
100S disc brakes all around 280 mm (11") diameter
Length 3850 mm (151.6")
Width 1540 mm (60.6")
Height 1251 mm (49.25"), 910 mm (35.8") without windscreen
Wheelbase 2286 mm (90")
front track, 1240 mm (48.8")
rear track, 1290 mm (50.8")
tires, 5.90-15"
950 kg
100S: 860 kg
fuel tank, 55 lt


Results in WSCC

Season

Car entry, chassis number Car number/ result
Sebring Mille Miglia Le Mans Spa Nurb Tourist Trophy Carrera Pan
Team 12h 1600km 24h 24h 1000km
Donald Healey Motor Co, SPL 225B #548, clutch #34, 12th
Donald Healey Motor Co, SPL 224B #552, dnf #33, 14th
Donald Healey Motor Co, SPL 226B #33T, in entry list
Donald Healey Motor Co #604, in entry list #45, in entry list
Sam Moore #610, in entry list
Total points
19
Statistics
Works Starts/finishes 6/2 2/0 2/2
Drivers Team entries and car number
Donald Healey Motor Co
Bert Hadley 548
Bertie Mercer 548
John Lockett 552 34
Mike Reid 552
Donald Healey 604
Geoffrey Healey 604
Marcel Becquart 33, 33T
Gordon Wilkins 33, 33T
Maurice Gatsonides 34
Ken Rudd 33T

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BN1 '53
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BN1 '54
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BN2 '55
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100S
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100/6 BN4 '57

Drawings

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