a) Lighting devices: all lighting and signaling devices must comply
with the regulations of the country where the event is taking place. Cars from other
countries must be in this respect, in conformity with the Convention on International Road
Traffic. The lighting devices included in normal equipment must be those originally
installed by the manufacturer and must function as originally intended by the manufacturer
for the particular model under consideration. As an example, when he transition from
"Hi-Beam" to "Lo-Beam" headlamps is obtained by two light sources
(filaments) inside a common reflector, this basic system shall not be modified.
Complete freedom is permitted regarding the headlamp lens, the reflector, and the lamps
(bulbs).
In order to comply with the motor vehicle regulations of certain countries, is
permissible to utilize the existing front parking lamps and modify them to incorporate
both parking and blinking turn signal functions.
It is permitted to add at the front only two extra lighting devices to those normally
provided by the manufacturer and mentioned on the recognition form.
The mounting of reverse-lights is authorized provided police regulations are respected
but not the fitting of maneuverable search-lights on the roof or elsewhere.
Waivers may be granted to this specification on condition that they be explicitly
provided for in the supplementary regulations of the event.
The mounting of additional headlights shall not entail any modification of the
coachwork.
b) Fuel and oil tanks: must be those normally provided by the
manufacturer for the model concerned, the capacities of which are mentioned on the
recognition form. If, for the said model, tanks of different capacities are
normally provided, only those mounted on the required number of cars necessary for
recognition of the said model will be authorized.
The location and type of filling port for the fuel tank(s) may not be changed.
The use of a fuel tank with an increased capacity may be authorized by the ACN with the
FIA's agreement, in the case of events organized under particular climatic conditions (on
desert or tropical courses for instance).
c) Cooling circuit: if, for the said model, radiators of different
capacities are normally provided, only those mounted on the required number of cars
required for recognition of the said car, will be authorized.
The addition of a radiator screen is authorized. The radiator mask or blind may
consist of a rigid sheet affixed behind the radiator grill.
The use of a radiator with an increased capacity may be authorized by the ACN with the
FIA's agreement, in the case of events organized under particular climatic conditions (on
desertic or tropical courses for instance). The make and model of thermostat are
free; however, it must neither be removed or relocated.
d) Feeding: the carburetor(s) or fuel injection pump(s) normally
mounted on the recognized model and described on the recognition form may not be changed
or removed.
The elements which control the quantity of fuel injected into the engine may be
changed, but not those which control the quantity of air.
e) Electrical equipment: the tension (voltage) of the electrical
equipment may not be changed.
The make and capacity (amperage) of battery and generator are free. The
manufacturer may provide for one same minimum series the use either of a dynamo or of an
alternator on condition that this is explicitly mentioned on the basic recognition form or
on an alternate "variant" form.
The original battery may be replaced -- by the manufacturer or the entrant himself --
by another one of increased capacity provided however that the location remains unchanged.
By location of the battery is meant the coachwork compartment in which the battery
is originally mounted.
In the case of a 12 volt system, this voltage may be obtained either by one 12 or two
series connected 6 volt units provided the original location is retained and no weight
advantage has resulted from the modification as compared with the original manufacturer's
installation.
Ignition coil, condenser, distributor and voltage regulator are free.
Spark plugs: make and type are free.
f) Transmission: for one same series of 5000 cars the following
possibilities are given on the formal condition that they are those of the
series-production and that they are normally sold to the purchaser and are entered on the
recognition form.
The use of an automatic transmission is permitted provided this type of transmission is
provided for by the manufacturer and listed on the recognition form. No restriction
exists regarding minimum production quantities of this device.
-- Gear-box: either two gear-boxes with the same number of ratios but different in
their staging, or two gear-boxes with a different number of ratios and different in
staging provided that at least 50% of the required minimum number of cars have been
equipped with either one of the two gear-boxes. The fitting of n overdrive system in
addition to the existing gear-box is authorized.
-- Final drive: two different ratios
Should the manufacturer have provided a greater number of gear-box ratios and/or rear
axle ratios, he must, to obtain recognition, have to prove that he has achieved the
required minimum production of the car as many times as he has submitted two different
gear-boxes and two different rear-axle ratios. An automatically controlled gear-box
is not taken into consideration. Recognition of it and of its particular rear-axle
ratio will always be granted in addition to the two sets of manually controlled
gear-boxes.
The gear-box lever will have to be located as provided by the manufacturer and
mentioned on the recognition form. Form and length are free.
The composition of the clutch lining is free provided the substitution meets the same
dimensions as those of the lining originally installed with regard to friction surfaces.
g) Shock absorbers: the make and type are free. However, no
addition is allowed, and neither their original destination nor their number, nor their
system of operation may be modified. By system of operation is meant: hydraulic or
friction shock absorbers of the telescopic lever type, whether the device has a
double-acting or a simple-acting effect, and, in case of hydraulic shock absorbers,
whether there is or not an additional gas chamber. The original supports may not be
changed in any way.
h) Tyres: the make and type are free on condition that the tyres
concerned are foreseen by the manufacturer to be fitted onto he original wheels without
any modifications of the original rims and without need of an intermediary device.
Any special or additional non-skid device for snow or ice may also be fitted.
i) Brakes: must be those provided by the manufacturer. The
replacement of worn linings is authorized and their system of attachment is free, provided
the dimensions of inner friction surfaces remain unchanged, Servo-assistance is only
permitted when duly recognized and at least 5000 identical cars having been made with this
equipment.
The composition of brake lining is free provided the substitution meets the same
dimensions as those of the lining originally installed with regard to the friction
surfaces.
j) Supplementary accessories not included in the recognition: are
authorized without restriction provided they have no influence whatsoever on the
mechanical performance of the engine, such as those concerning the aesthetics or the
inside comfort (lighting, heating, radio, etc. . .) or those enabling and easier or safer
driving of the car (speed-pilot, windscreen wipers, etc. . .), provided they do not
affect, even indirectly the mechanical performance of the engine, the steering, the
transmission, the road holding and the braking.
The pedals must be those provided by the manufacturer (number, place, method of
mounting), but it is allowed to change pedal pads or to fit heavier or wider pads.
k) Coachwork: none of the normal elements of the coachwork
(dash-board, all inside quiltings whatever their location), none of the accessories
normally mounted by the manufacturer on the most economical model may be removed or
replaced.
However, the modifications deriving from the mounting of the supplementary accessories
authorized in the preceding paragraph, such as those necessitated by the adding of a
windscreen, washer (drilling a hole into the bonnet) or of a speedometer (housing in the
dashboard) , will be allowed.
On same minimum series may comprehend various materials for seats, upholstery and
inside quilting (cloth, leather, plastics, etc) and two different types of front seats
(bench type or separate seats). These variants must be stated on the recognition
form and in particular the different weights resulting from the mounting of different
seats must be specified.
Transparent parts must, in case of damages, be replaced by others made of a material
identical to the original one listed on the recognition form. They shall be
completely interchangeable with those originally mounted. They must be mounted
on the original supports and their original opening system must be maintained.
The original windshield may be replaced by one of the same material incorporating
heating and defrosting elements.
Bumpers, embellishers, streamlining: bumpers are compulsory on all cars for which
the manufacturer has normally provided them.. Wheel embellishers may be removed. The
addition of any protective device underneath the car is forbidden unless such a
device is mentioned on the recognition form of the model in question or is authorized or
made compulsory by the by the supplementary regulations of the event.
Touring cars shall have been manufactured at the rate of at least 1000 units and be
equipped with at least 4 seats; however, if their cylinder-capacity is equal or inferior
to 700 cc, they may be delivered as two-seaters.
Article 260-Modifications and additions authorized:
All those already authorized in Group 1, plus the following ones:
a) Lighting devices: the mounting of additional headlights is
authorized provided that a total 6 headlights is not exceeded (parking lights not
included). Extra headlights may, if necessary, be fitted into the front part of the
coachwork or into the grille, but such openings as those needed in this case must be
completely fitted by the additional headlights.
b) Electrical system: the replacement of a dynamo by an
alternator is authorized, provided the attachment system and driving method remain
unchanged.
The installation of transistorized ignition systems is permitted provided it does not
involve the modification of any mechanical part of the engine.
The relocation of the ignition coil is permitted if changing from a DC generator to an
AC alternator necessitates this modification.
The voltage regulator and fuse panel may be relocated provided they remain within the
same compartment in which they were originally installed.
c) Reboring: maximum tolerance: 1.2mm, but the resulting increase
in cylinder capacity may not be such as to make the car pass into the above class.
The reboring tolerance is valid for any type of engine (with or without sleeves).
d) Stabilizer: the fitting of a stabilizer is authorized.
e) Fan: complete freedom.
f) Air filter: may be changed or removed.
Dynamic air intakes may be installed on the carburetors provided this installation does
not involve any body modifications such as cutting of additional holes.
g) Fuel pump: a mechanically controlled pump may be replaced by an
electrically controlled one, the location of which may be different.
The type of fuel pump is free and the installation of a pump of greater capacity is
authorized.
The installation of an additional pump is likewise permitted provided this additional
unit is not connected to the fuel line.
h) Oil filter and cooler: an oil filter and/or oil cooler may be
added when the model provided by the manufacturer has none, and the existing one may be
altered.
i) Carburetor(s): the carburetor(s) provided by the manufacturer
may be replaced by another (others) of a different diameter, provided:
--the number be the same as that provided by the manufacturer.
--they can be mounted on the inlet manifold of the engine with no need of any
intermediary device and by using the original attachment parts.
j) Springs: (valves, clutch, suspension, etc . . .) may be replaced by
others of unrestricted origin, but with no modification of the number provided by the
manufacturer and on condition they can be fitted without alteration of the original
supports.
k) Transmission: may be used all gear-boxes, manual or automatic,
and all final drive ratios provided and delivered by the manufacturer for the model
concerned, which have been granted recognition and are entered on the recognition form.
The replacement of a manually controlled clutch with an automatic one, is
authorized, whatever its operating system may be.
l) Differential: it may comprehend a device enabling to limit its
normal functioning (limited slip control). This device must be entered on the
recognition form or on an additional form (variant).
The use of a device which completely blocks the functioning of the differential
may not be accepted unless it has been fitted on the same minimum number of cars as
necessary for the recognition of the basic model.
m) Pistons and camshaft(s): all modifications of pistons are
permitted. They may be lightened, their shape may be altered and they may even be
replaced by others supplied or not by the manufacturer.
n) Cylinder block and head: the increase of compression ratio
through machining of the cylinder head or block (or by using a thinner gasket or removing
it) is authorized.
o) Muffler: the make and type are free, on condition that the
original exhaust manifold -- and particularly its outlet port -- remain entirely identical
to the original part. The silencing effectiveness shall not be diminished. It
shall, in any case, remain within the limits provided by the police regulations of the
country where the event is run.
By exhaust manifold is meant the part collecting together the gasses from the
individual exhaust ports.
p) Finishing off: all perfecting operations by finishing of
machining the original mechanical parts, but not their replacement, except with regard to
springs, pistons and camshaft(s) as specified above under sections j and m. The term
"Mechanical Parts" covers all those included in the propulsion system, the
steering system, the suspension and the braking system as well as accessories necessary
for the normal operation of these systems. In other words, provided it is always
possible to ascertain unquestionably the origin of the series-production part, it may be
rectified, balanced, lightened, reduced, or modified with regard to the shape through
tooling, to the exclusion of any addition of material or any mechanical extension or of
any process involving a change of the characteristics of the molecular structure or of the
surface of the metal.
q) Wheels and rims: must retain the dimensions provided by the
manufacturer for his series-production and be mentioned on the recognition form.
One basic series may comprehend wheels of different types (solid or perforated disc
wheels, spoke wheels, etc. . .), and different rims. But even when the recognition
form mentions such differences, all four wheels must have the same diameter.
r) Brakes: the fitting of a dual pump or any type of device
providing both a simultaneous action on the four wheels and divided action on the front
and rear wheels is authorized.
The protective shields normally affixed to disc brakes may be altered and reworked but
may not be removed.
The make and attachment system of linings are free, but no other change is authorized.
In particular, the dimensions of inner friction surfaces must remain unchanged.
s) Coachwork elements: the steering-wheel and the front seats may
be replaced, provided seats of at least the same weight as the original ones be
substituted for them.
In the event the original seats are replaced by different seats, the total weight of
the new seats must be equal to that indicated on the recognition form, however, it is not
compulsory that the two seats be of equal weight.
Modification, reinforcement and/or relocation of the jack sockets or pads is permitted.
t) Cables and lines: it is allowed to entirely modify the
arrangement and location of all cables and lines providing for the passage of fluid
elements (air, water, fuel, electric current).
These terms include the lines which are part of the suspension system. The
material and the location of all lines may e changed and altered at will.
