Extract from the Spa Six Hours Endurance Race Regulations


Vehicles entered must conform to 2017 appendix K of the FIA International Sporting Code.
The event is open to the following cars :

  • Post 1946 Series Production Touring Cars (T) • Post 1946 Competition Touring Cars (CT)
  • Post 1946 Special Touring Cars (HST) • Post 1946 Grand Touring Cars (GT)
  • Post 1946 Competition Grand Touring Cars (GTS) • Grand Touring Prototypes (GTP)

and for the following periods :

  • PERIOD E1 : cars built between 01/01/1947 and 31/12/1954
  • PERIOD E2 : cars built between 01/01/1955 and 31/12/1961
  • PERIOD F : cars built between 01/01/1962 and 31/12/1965

All cars competing in the Spa Six Hours endurance race must be in possession of a Historic Technical Pasport (HTP).

  • a) Single seater racing cars are excluded.
  • b) The choice of the carburettors for the cars of Period F is free.
  • c) Electronic ignition (MST or similar) is permitted.
  • d) All Ford GT40s will be classified in GTP category, Period F.
    The maximum authorised rim dimensions are as follows: Front: 6.5 x 15″ Rear : 8 x 15″
  • e) Ford V8 engines must be fitted with 18 millimeters spark plugs as in the period.
  • f) Bumpers:
    Unless they constitute an integral part of the bodywork, the bumpers of homologated cars and their supports must be removed.
    The following cars are considered as having bumpers constituting an integral part of the bodywork:
    – Jaguar Mark 1 and 2
    – Austin and Morris Mini, and all their derivatives
    – Ford Falcon
    – Ford Mustang
    – All 120 type Volvos
    – Abarth 850TC and 1000
    – Porsche 911, all types
    – Lotus Elan.
  • g) The lights for the identification of the car must remain discreet and continuous LED ribbon should be avoided. Red lights are not allowed in the front of the car.
  • h) The rear window of the car cannot be totally obstructed and must enable to see inside the car.
  • DUNLOP Vintage «L» or «M» Section racing tyres which have 204 Compound only and tread pattern CR65 or earlier.
  • AVON CR6 ZZ.
  • 2.6.1 Light must be Period Specification, by definition excluding modern Xenon, LED or similar lights. Auxiliary lights may be added up to a maximum of six total forward facing lights excluding parking lights.
  • 2.6.2 All cars must have a red light in working order which is of a model approved by the FIA, faces rearwards at 90 degrees to the car’s centre line, is clearly visible from the rear, is not mounted more than 100mm from the car’s centre line, is at a height of no less than 350mm, is no less than 450mm behind the rear wheel centre line and can be switched on by the driver when seated normally in the car. Where LED lights are used, at least 90% of the elements must be operational.
  • 2.6.3 Red lights are not allowed in the front of the car.

Radio communications between cars and pits are forbidden.

  • 2.8.5 The refuelling during the race will only take place at the Total petrol station located inside the paddocks down to the Eau Rouge. All the refuelling area will be regarded as being under the refuelling zone procedure. The driver must get out of his car and do the refuelling himself. The mechanics are not allowed in the refuelling area.
    Maximum quantity of fuel for each refuelling : 100 liters.
    An imprint of a credit card will be asked at signing on to cover the fuel consumption during the race.
    After the race, the total of fuel consumption as well as the amount that will be charged on the credit card will be emailed respectively to each team. Fuel will be sold at the market prize.

Qualifying and race : 112 dB on the track, measured at 15m from the centreline of the track.