The
following changes from the Standard Class Regulations are permitted in
this class:-
When
optimising a road-legal vehicle for off-road use, owners may need to take
advice on the suitability of any alterations to establish that they are
not detrimental to safety for public road use, and that the terms of the
vehicle’s insurance are not contravened.
C.1.
VEHICLE DIMENSIONS
C.1.1. All dimensions given in the Vehicle Sizes Chart shall apply.
C.2.
STEERING.
C.2.1. Power steering may be fitted to any model, using parts
from any other product listed in A.2. Points of attachment may be
strengthened where necessary.
C.3.
ENGINES.
C.3.1. Any Land Rover or Rover car engines (and others with
Rover part numbers) up to a Max of 4600cc may be used complete with their
ancillaries subject to A2.
C.3.2. Carburettors may be changed, air intake system
and manifolds may be altered to any specification.
C.3.3. Engine location and orientation is free on condition
that the forward facing part of any engine block (the main cast structure
and not ancillary equipment / bolted-on parts) shall be forward of the
midpoint of the wheelbase of the vehicle.
C.3.4. Forced induction petrol engines are
not permitted.
C.4.
TRANSMISSION.
C.4.1. The transmission type and its
location are free, provided the transmission consists of parts that have
Land Rover / Rover part numbers or equivalent cross-references.
C.5.
SUSPENSION & AXLES.
C.5.1. Any Land Rover suspension system and
components may be used on any model and the suspension mounts modified to
accommodate the components, the use of air suspension is prohibited except
in classes and periods where fitted as original equipment.
C.5.2. Any axle types may be used (provided
they have Land Rover part numbers or equivalent cross-references).
C.5.3. Coil assisters (where the coil is
separate from the shock absorber / damper) may be fitted to a leaf-spring
vehicle. The suspension system shall then be deemed to be a coil-spring
type and not a leaf-spring type.
C.5.4. Bump-stops must be fitted in the
appropriate location and must be complete factory-specification items that
match either the chassis or axles in use.
C.6.
DAMPERS.
C.6.1. Additional dampers may be fitted.
C.7.
BRAKES.
C.7.1. Any type of braking system may be
used except fiddle brakes.
C.7.2. Bias braking (front to rear) is
permitted but the ability to alter the settings from the driver /
passenger compartment, or whilst the vehicle is being driven, is
prohibited.
C.8.
CHASSIS
C.8.1.
The chassis may be modified from one or more original Land Rover chassis
or one(s) of Land Rover design maintaining a chassis rail separation of
Land Rover Ltd design specification. The profile and rectangular cross
section above and between the axles must remain as the original. All
welding on the chassis must be of a high standard.
C.8.2.
Rail, space-frame or monocoque chassis construction may be used where
factory fitted to that model.
C.9.
RADIATORS & PLUMBING.
C.9.1. The radiator may be fitted in any suitable
location within the confines of the original silhouette.
Coolant hoses and pipework may be re-routed but must be separated
from the driver / passenger compartment by means of lagging (if metal
pipework) and a solid metal cover (if rubber pipework) to protect all
persons including marshals and spectators.
C.9.2. All pipework, header tanks etc. shall be
covered to protect occupants, marshals and spectators should any part of
the cooling system fail and cause water or steam to escape.
C.9.3. The radiator shall be shielded from the
driver / passenger compartment regardless of its location. Louvre vents
are acceptable as radiator shielding.
C.9.4. The cooling fan(s) must be protected by a
grille, louvre or similar.
C.10.
FUEL TANKS.
C.10.1. Fuel tanks may be changed or repositioned but
must be securely fixed in place and be of metal construction. Plastic or
composite fuel tanks are permitted only where they are factory fitted to
that model and mounted in the original position.
C.10.2. If a non-standard fuel filler is used, it
must have a leak-proof cap, and be isolated from the driver / passenger
compartment by the best possible method commensurate with the vehicle
design. Underseat lids shall be screwed down with a gasket. The very
minimum protection for an early underseat filler is the cap separately
sealed. The fuel filler cap must be located in a safe place. Fuel tank air
vents must be at least 25cm to the rear of the cockpit and must be
designed to prevent the escape of fuel should the vehicle be inverted. It
is recommended that a non-return valve is incorporated in the vent system.
(See MSA Yearbook 2006 reg Q.6.)
C.11.
BUMPERS
C.11.1. Heavy duty bumpers, and bumpers
associated with winch installations are permitted on condition they are no
smaller or weaker than the originals. See Logbook article Dimensions
Chart for bumper widths. (Rules B.12.2 and B.12.3 do not apply in Modified
vehicles)
C.12.
SILHOUETTE.
Definition:- The "body capping line" on a “Series” Land
Rover or Defender is defined as a horizontal line level with the top edge
of the
fixed rear load area surround. The "window line" on Saloon /
Station Wagon types is level with the bottom edge of the driver’s door
window.
C.12.1. The body parts above the “body capping line”
or “window-line” (as defined above) may be removed.
C.12.2. The silhouette (as viewed from the side and
front) of the bodywork below the “body capping line” or “window
line” (as applicable) must be retained. The chassis, fuel tank etc. are
not considered to be part of the silhouette.
C.12.3. Sill panels may be removed and wings cut away,
provided they present no sharp edges. Inner faces of the wings (those
either side and forward of the radiator panel on a Series Land Rover)
shall remain leaving the silhouette of the body unaltered.
C.12.4. Bodywork may be replaced with non-Rover items on
condition that all other shape / dimension specifications above are
adhered to.
Back
to B
|| On to Section D
|
