CARLOS VILLAR FLOR

5.6.1.1 Any ride height consistent with safe operation of the vehicle is permitted. 5.6.2 Springs and Shock Absorbers

5.6.2.1 Any shock absorbers may be used, provided they attach to the original mounting points. The number and type (e.g. tube, lever, etc.) of shock absorbers shall be the same as stock. The interchange of gas and hydraulic shock absorbers is permitted. Remote reservoir shock absorbers are permitted. The location of the reservoir is unrestricted. No shock absorber may be capable of adjustment while the car is in motion, unless fitted with original equipment.

5.6.2.1 MacPherson strut equipped cars may substitute struts, and/or may use any insert. Spring ride seat height location may be altered from stock.

5.6.2.1 Springs of any original may be used, provided they are of the same number and type as originally fitted, i.e., coil, leaf, torsion bar, and that they shall be installed in the original location using the original system of attachment. Shackles or spacers may be used to adjust leaf spring ride height. Spacers, including threaded units with adjustable spring seats, may be used with coil springs.

5.6.2.1 Spacers or lowering blocks may be used between leaf springs and the point(s) of attachment to the axle housing.

5.6.2.1 Coil-over struts or shocks absorbers, where a threaded sleeve is permanently attached to a housing, are prohibited unless fitted as standard equipment

5.6.3 Suspension Control

5.6.3.1 Control arms may be reinforced or alternate control arms may be used. Original suspension control arms may be reinforced, modified, or replaced with components of unrestricted origin.

5.6.3.2 Any anti-roll bar(s), traction bar(s), panhard rod or watts linkage may be added or substituted, provided its/their installation serves no other purpose. The mounts for these devices may be welded or bolted to the structure of the vehicle. No suspension control mount or component shall be located in the trunk or driver/passenger compartment unless installed by the manufacturer as original equipment. Traction bars used to control axle rotation shall be one piece solid bar or tube. Heim rod ends may be fitted. Suspension pickup points on the chassis or structure may be relocated and/or reinforced. If such points are relocated to the driver/passenger/trunk compartments, such points and attendant suspension components shall be covered with metal panels.

5.6.3.3 On those cars where an anti-roll bar also acts as a suspension locating device, the diameter of the bar may be changed. Bar attachment and pivot points on the chassis and control arms shall remain as stock, except as provided for in these Rules. The manufacturers original system of suspension, e.g., live axle, swing axle, MacPherson strut, a-arm, etc., shall be retained. The wheelbase of the vehicle shall not be changed or relocated in a fore/aft director.

5.6.3.4 Suspension bushings are unrestricted. Adjustable spherical bearings or rod-ends are permitted on all suspension components.

5.6.3.5 Any anti-roll bar, camber compensating device, panhard rod, watts linkage and/or other suspension stabilizer is permitted. Attachment points of such components are unrestricted.

5.6.3.5.1 Said components may extend into the driver/passenger/trunk compartments, but shall be coverred with metal panels.

5.6.3.5.2 These components may pass through body panels, chassis panels and frame members. 5.6.3.6 Spacers/lowering blocks may be used between leaf springs and the points of attachment to the axle

housing.

5.6.4 Suspension Mounting Points

5.6.4.1 Cars equipped with MacPherson strut suspension may decamber wheels by the use of eccentric bushings at control arm pivot points, by the use of eccentric bushings at the strut-to-bearing-carrier joint, and/or by use of slotted adjusting plates at the top mounting point. If slotted plates are used, they shall be located on existing chassis structure and may not serve as a reinforcement for that structure. Material may be removed or added to the top of the strut tower to facilitate installation of adjustor plate, provided it serves no other purpose.

5.6.4.2 On other forms of suspension, camber adjustment may be achieved by the use of shims and/or eccentric bushings.

5.6.4.3 All forms of suspension may adjust caster by means of shims or eccentric bushings. Additionally, MacPherson strut-equipped cars may adjust caster at the upper strut mounting point/plate.

5.6.4.4 Independent rear suspension mounting holes may be slotted and reinforced for purposes of camber and/or toe adjustment providing stock control arms are utilized. Material may be removed or added to the top of the strut tower to facilitate installation of adjuster plate provided it serves no other purpose.

5.6.4.5 Bushing material, including that used to mount a suspension subframe to the chassis, is unrestricted. 5.6.4.6 Rubber bump stops may be removed, but their chassis mounts, brackets, etc., may not be altered in any

way.

5.6.4.7 Pick-up points may be reinforced but not relocated.

5.6.4.8 Hardware items (nuts, bolts, etc.,) may be replaced by similar items performing the same fastening function(s).

5.6.5 Steering

5.6.5.1 Steering arms, pitman arms, and steering linkage component parts may be reinforced. The steering system shall not be changed.

5.6.5.2 The steering column shall not be modified in any way other than to improve its impact energy-absorbing characteristics. A collapsible-type steering column is strongly recommended.

5.6.5.3 Any steering wheel and wheel quick-release mechanism complying with Automobiles General, Section 9.3.24, may be used.

5.7 Brakes

5.7.1 Brake Components

5.7.1.1 Original brake calipers shall be retained. Alternate discs or drums may be fitted as long as they are of the original diameter and width, and the same material and design as the originals. Only those alternate components authorized on a vehicle's specification page may be fitted as replacements. Disc brake rotors and brake drums shall not be modified other than for truing and installation.

5.7.1.2 Dual braking systems are required. Any dual brake master cylinder(s) may be fitted. Any pressure equalizing or proportioning devices are permitted.

5.7.1.3 A servo assist may be added, or a standard servo assist may be modified, removed, or replaced. 5.7.1.4 Drum brake wheel cylinder size may be changed.

5.7.1.5 Any brake pads and/or linings that fit the original or approved alternate brake components may be used. Any brake lines may be fitted.

5.7.1.6 The hand brake and its operating mechanism may be removed.

5.7.1.7 Cars with rear drum brakes may convert to disc brakes. Rear rotors shall be no larger in diameter than the front rotors, solid and of ferrous material. Rotor hubs may be ferrous material or aluminum and may be part of the rotor. Rear calipers and mounting brackets are restricted to ferrous or aluminum.

5.7.2 Brake Ducting

5.7.2.1 Brakes may be cooled by the ventilation of backing plates or the fitting of air ducts, provided no changes are made in the bodywork for this purpose.

5.7.2.2 Front mounted ducting shall not extend to the side beyond the centerlines of the front wheels, nor forward of the most forward part of the front body panel or spoiler/air-dam.

5.7.2.3 Rear brake ducts shall extend, in a forward direction only, no more than twenty-four (24) inches from the rear brake discs/drums.

5.7.2.4 Disc brake dust/splash shields may be altered or removed. 5.8 Wheels and Tires

5.8.1 Wheels

5.8.1.1 Any wheel and tire combination may be used within the following limitations.

5.8.2 Tires

5.8.2.1 Cars shall utilize tires meeting or exceeding the requirements of GCR Automobiles - General Regulations section 9.3.4., (Tires).

5.8.2.2 Make and size of tires are unrestricted, provided that the tires do not interfere with the bodywork, frame, or suspension under any conditions of steering lock or rebound.

5.8.2.3 Tire tread (that portion of the tire that contacts the ground) shall not protrude beyond the fender opening when viewed from the top perpendicular to the ground.

5.8.2.4 Spare tires and wheels shall be removed.

5.8.2.5 Radial tires are permitted only if they are D.O.T. approved and meet Automobile - General Regulations Section 9.3.4.