The 1980 24 Hours of Le Mans was the
48th Grand Prix of Endurance, and took place on 14 and 15 June 1980. It
was the seventh round of both the World Championship for Makes and World
Challenge for Endurance Drivers. With neither the Porsche nor Renault
works teams contesting the big Group 6 sports-cars for outright victory,
it left the prospects open for a privateer victory from Joest, Rondeau
or De Cadenet, or from Group 5 again, if they were to fail. The wet
weather throughout the race further added to the uncertainty, reducing
the advantage of the more powerful cars.
The race started in a downpour and
the rain continued off and on throughout the race. The first half of the
race saw a number of the favoured teams hold the lead for extended
periods, until one by one they suffered delays or mechanical issues. By
dawn it was the Joest Porsche special (driven by Jacky Ickx with
Reinhold Joest) that held a 2-lap lead over Jean Rondeau in his own car,
and John Fitzpatrick in the Dick Barbour 935. But when Joest pitted at
10am having lost top gear, the half-hour stop cost four laps and put the
Frenchmen into the lead. Hard driving by Ickx got him back onto the lead
lap again. A sudden squall at 1pm sent both cars aquaplaning off at the
fast Dunlop Curve, fortunately without doing any major damage to either.
When another rain shower appeared in the last hour, Ickx dived for the
pits to put on wet tyres, while Jaussaud bravely stayed out on his
slicks. This time Ickx could not make up the lost time and the French
took a significant victory: Jean Rondeau gained the unique achievement
of winning Le Mans driving a car of his own manufacture, with his other
team car coming in third.
The introduction of the new Group 5
and Group 6 categories in 1976 had not helped sports-car racing – it
forced most manufacturers to choose between one or the other. The World
Championship for Makes was stuttering and the small fields left the
spectators disinterested which, in turn, dissuaded sponsors to invest.
The strongest competition was found in the IMSA series in North America.
After five years of going alone, the Automobile Club de l'Ouest (ACO)
returned to the World Championship, becoming the series' premier race,
and easily with its biggest field.
True to its founding objective to
stage a test of endurance and technical innovation, this year the ACO
introduced a number of new regulations designed to encourage greater
reliability and efficiency over raw speed. However, there were a few
unforeseen repercussions that caused controversy. All cars were now
limited to a maximum fuel tank volume of 120 litres, and refuelling
would run at a fixed rate of 50 litres per minute. This meant that
pitstops that used to take around 30–40 seconds would now take over 2
minutes. Alternative fuel-types were also now permitted. A minimum
distance of 25 laps had to be done between fuel and oil stops
(effectively a fuel economy of 280 litres per 100 km, or 8mpg). A
maximum of four pitcrew would be allowed to work on a car at a time.
This year, entries had to have either
two or three drivers. Qualifying would be done by the average time of
each car's drivers. The FIA qualifying rules were that each car had to
be within 130% of the pole time and also within 110% of their class
leader – although, the ACO allowed a team to drop their third driver for
the race if they wanted a better grid position or, more importantly,
were at risk of not qualifying. Formerly this was done on the Wednesday
and Thursday however this year only a single, 5-hour session on Thursday
would count toward qualification. The idea was to flush out amateur
drivers who may be a liability to other drivers from being too slow.
However, it did not take into account the vagaries of the weather and
with constant rain on Thursday, it left only a very short window in the
twilight for teams to get all their drivers qualified.
The other significant change was the
ban on replacing the major components after the start of Qualifying
until the end of the race. This applied to engines and gearboxes, while
allowing a single turbo replacement. This was put in to stop the use of
fragile, high-powered "qualifying engines" to get a high grid spot then
swapped out before the race. But again, this compromised the race for
cars that might have unforeseen issues with their race-engine during
practice
Where we have not had a model of the car
through the business as
raced I've added another example of the car as an illustration
(where I have one)
Pos
Car
No.
Team
Drivers
Chassis
Engine
Laps
Reason
1
16
Jean Rondeau
Jean Rondeau
Jean-Pierre Jaussaud
Rondeau M379B
Cosworth DFV 3.0 L V8
339
N/A
2
9
Equipe Liqui Moly - Martini Racing
Jacky Ickx
Reinhold Joest
Porsche 908/J80
Porsche 911/78 2.1L F6
twin-turbo
337
N/A
3
17
Jean Rondeau
Gordon Spice
Philippe Martin
Jean-Michel Martin
Rondeau M379B
Cosworth DFV 3.0 L V8
330
N/A
4
(example)
5
WM Esso
Guy Fréquelin
Roger Dorchy
WM P79/80
Peugeot PRV ZNS4 2.7L
V6 twin-turbo
319
N/A
5
70
Dick Barbour Racing
John Fitzpatrick
Brian Redman
Dick Barbour
Porsche 935 K3/80
Porsche 930/72 3.2L F6 turbo
318
N/A
6
4
Porsche System
Jürgen Barth
Manfred Schurti
Porsche 924 Carrera GT Turbo
Porsche 2.0 L S4 turbo
317
N/A
7
(example)
8
A. de Cadenet
(private entrant)
Alain de Cadenet
François Migault
De Cadenet-Lola LM78
Cosworth DFV 3.0L V8
314
N/A
8
(example)
49
Vegla Racing Team
Harald Grohs
Dieter Schornstein
Götz von Tschirnhaus