Engine & Mechanical Specs

Works Rally Cars ________________________________________________

TON 792 as it is today still with its correct black hard top, but now it`s all red. The wing vents were first cut into the car when it was entered as a reserve car in the 1961 Le Mans 24 Hours It has since raced in several Le Mans Classics

Photo from Les Healeys dans les Alpes Herve Chevalier

UOC 741 UOC 741  was different from the other cars. Firstly it was a BN4 whereas the others were BN6s. Secondly It was an old 1956 press demonstrator car that had received the 6 port head and other modifications including 4 wheel disc brakes and a blue printed engine, when it ran in the 1957 Mille Miglia.

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TON 792 In action being driven by Nancy Mitchell while the co-driver gets some sleep

BMC "Works" 100-Sixs left to right PMO 202 Shepherd / Williamson PMO 201 Moss / Wisdom PMO 203 Sears / Moore TON 792 Mitchell / Clarke UOC 741 Gott  / Tooley

PMO 202 - displaying the features mentioned above - and  a Coupe des Alpes!

In the team picture its colour appears to be BRG, although the duo tone feature is hidden. BRG was not a factory colour for 100-Sixs so this was unlikley. In the picture above it appears to be blue - somewhat like the BN3. In fact its colour was  Pacific Green over Florida Green which  accounts for the "bluey" colour in some photos. This is  not a colour combination normally associated with motor sport but this car was originally just a press demonstrator and this was a production colour combination available at the time and targetting the US market

Note the relatively stock interior. Some rally aids, a couple of extra switches but not much else. Interesting to note the Longbridge type chrome windscreen washer push button

- Standard 2,639 cc engine, balanced - Polished and ported head - 3/4 Race Cam (very similar spec to what was much later installed in the BJ8 ) - Six Port Head with twin SU`s, probably 13/4" - (possibly 2" later) - Side exit exhaust - larger fuel tank - Raised and strengthened suspension - Four wheel disc brakes

100-Six

The first BMC team entry of Austin Healeys was put together for the 1958 Apine Rally and was managed by Marcus Chambers.

UOC 741 Competing in the Monte Carlo Rallye photo courtesy Herve Chevalier

The Ultimate Works Healey - aluminium engine - triple webers - side cut out exhaust - wing vents - flared arches - minilites - 140 mph

When people think of a Works Healey they probably think of a car like the one below. This car however was the end of the line of the development of the Works cars and has many more modifications than the original 100-Sixs. The car below was in fact prepared for Timo Makinen to drive in the 1967 RAC Rally. Works Healeys had not been run for two years and the car actually belonged to Peter Browning at the time. Makinen then changed his mind and Rauno Aaltonen agreed to drive it. In fact it never ran as the rally was cancelled due to an outbreak of foot and mouth desease. The car is the ultimate devlopment of the Works Healey and was fitted with an all aluminium engine (not just the head!) It was capable of 0 -60 mph in 7.5 seconds and a 140 mph.

TON 792 TON 792 was the BMC demonstrator and was usually used by the Vice Chairman George Harriman. He agreed to lend it to Marcus Chambers to make up the five car team for the 1958 Alpine Rally. Chambers` original plan was to run 5 MGA Twin - Cams.

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48 spoke wires

With contributions by Peter Dzwig

Two of the PMO cars before the start of the 1958 Liege Rome Liege  Rally The bonnet catches and wire mesh gills are clearly evident

1958 Team of 100-Sixs pictured at the Hotel Rose The, La Ciotat Plage, France

TON 792 is the only one of the Works 100-Sixs that still exists as a complete car, although I understand that some significant parts and equipment of PMO 202 and 203 are stored in the UK

At the June 2009 AHCOA Conclave in Ontario, Canada, Rich Chrysler spoke with guest of honour Ann Wisdom who partnered her father in the very first rally event for UOC. She confirmed that the car was Pacific Green over Florida Green, and had the `grey` interior and dark green carpets of a standard production model. Ann also mentioned that their knickname for the car, playing on its UOC registration plate, was `You Old Clot`. A friendly criticism of the car based on its  original rally outing when it was a stock press demonstrator still carrying the two-port head.

John Gott and UOC in the Alpine Rally. The Pacific Green/Florida Green combination is clearly visible This `photo` is from the Shell film of the rally. Very few if any, real colour photos exist of this car

100-Six Works Specification The 100-Six specs were much closer to the production model than the car above. They also differ from the later 3000s in several aspects as the Works cars continued to evolve  from 1958 through to 1965. Even the 100-Six cars evolved during their brief career from 1958 to 1959. Body and Exterior Features - The three PMO cars were new cars and were painted Signal Red. - TON 792 - a `used` car, was duo-tune Colorado Red over Black -  Black hardtops with roof vent - not the more commonly known White ones -   - Two air vents in the bonnet facing backwards either side of the bonnet ridge. - Headlight wire mesh guards and two unprotected spotlights - 100-Six grill with two small sections cut away asymetrically on either side. - Later in 1958 the grill was removed and replaced with the well known wire mesh type - Bonnet hold down catches and a quick release bonnet pull were also added later in 1958 - 48 spoke wires, on normal width rims - Sprite `Bumperettes` on the rear - They sometimes had bumpers fitted  depending on the    on the class they were competing in. - No leather bonnet straps - No triangular vents in the side of the wings . These were   introduced in 1961 on the 3000s - No raised boot lid to accomodate the second spare wheel on top of the larger fuel tank - No minilite wheels. In fact no Works Healey ever had minilites except the car shown above, which was entered in a prototype class but of course never actually competed

UOC 741 as prepared for the 1958 Monte Carlo rally, including swivelling roof light. 1958 was one of the worst years in history for bad weather and the car, like the majority of others, failed to finish

1958 Alpine Rally plaque from UOC 741