2018 FRONT WHEEL DRIVE 4 CYLINDER RULES
ALL CARS MUST HAVE WORKING
FIRE EXTINGUISHER WITH IN DRIVERS REACH.
EQUIPMENT: Rules apply at all times car is on track. Snell-rated
SA2005,SA2010 or SA2015 helmet required. Roll bar padding required
in driver compartment. Recommended: Fire retardant padding. SFI-approved
full fire suit required. Fire retardant gloves, shoes and neck brace
(or head and neck restraint) required. Right and left seat head
supports required if using head and neck restraint system.
Recommended: Fire retardant head sock and underwear, collapsible
steering shaft. Driver-side and passenger window net required,
minimum 16 inch by 20 inch ribbon or mesh style (1), and must be
mounted to roll cage so latch is at top front of window. Minimum
three inch (two inch with head restraint system) wide SFI-approved
five point safety belt assembly required, must be mounted securely
to main roll cage. Recommended: Safety belts no more than two years
old. Kill switch required within easy reach of driver and must be
clearly marked OFF and ON.
Any front wheel drive compact car withfour cylinder engine. All cars
must remain strictly OEM. Must be unaltered OEM-appearing body. No
station wagons, convertibles or two seat sport cars allowed, no
Honda CRX. Maximum wheelbase 107 inches, maximum one inch difference
from side to side. OEM steel unaltered floor pan only. Inner fenders
may not be removed. Hood and trunk lid/hatch must be securely
fastened. All doors must be securely welded or bolted. All glass,
exterior lights, chrome/plastic trim and hood insulation must be
removed. Dash may be removed, but can remain. Maximum seven inch
front and rear sun visors allowed, opera window may be closed.
Skirting allowed, must maintain OEM appearance. Car number must be
minimum four inches thick and 20 inches tall and clearly visible, on
both sides, top and back of car, and front, if possible.
RAILS: Bumpers must be approved OEM in OEM location, welded, chained
or cabled to frame. Front and rear tow hooks mandatory. OEM bumper
covers should remain. May have one horizontal bar - maximum 1.75
inch OD - tying front frame horns together ahead of radiator. One
additional maximum one inch OD bar may be added for radiator
protection; must be behind bumper, within confines of body, no wider
than OEM frame horns. Maximum one inch wide by two inch tall steel
or lexan rub rails allowed - bolted flush to body. No sharp edges
allowed on bumpers, rub rails or bolts. No bars past outside edge of
body other than rub rails.
4. ROLL CAGE:
Six-point, full perimeter roll cage required. Must use minimum 1.5
inch O.D. with 0.095 inch wall thickness tubing. Rear hoop must have
X bracing configuration. Rear kickers required. Recommended: front
brace bar from main halo to front cowl. Forward brace bar allowed
from main cage to front strut tower. Must have 1.25 inch minimum O.D.
cross bar in top halo. Cage must be electric welded and attached
using adequate plating (Recommended: minimum 0.250 inch). No iron,
galvanized pipe or fittings, square tubing, brazing or soldering
5. DOOR BARS:
Minimum three horizontal door bars on driver side and on passenger
side. Both sides must have vertical bracing from top to bottom door
bars. All tubing must be minimum 1.5 inch O.D. with 0.095 inch wall
thickness. Steel door plates, 18 gauge or 0.049 inch minimum
thickness, must be securely welded to outside of door bars on driver
side. Plate must cover area from top door bar to frame and from rear
down post to five inches in front of seat. Must be visible for
COMPARTMENT: Minimum three windshield bars and protective screen
mounted in front of driver and passenger. Aluminum high-back racing
seat required. Must be securely mounted to roll cage using 0.375
inch bolts. Driver must be sealed off from track, engine,
transmission and fuel cell/tank. No mirrors. No gutting allowed
except for roll/door bar clearance. All flammable material, radio
and air bags must be removed. Front and rear firewalls must remain
and have no holes. Interior must remain open.
AND STEERING: All components and mounts must be unaltered, OEM and
match year, make/model of car used. Exception is: Recommended right
rear safety hub (for example 1987-1995 Caravan hub assembly). Brace
bar allowed between strut towers in front and rear. No other bracing
allowed on front end. No weight jacks, modifications, racing
components, aftermarket or homemade traction devices allowed. Rear
wheels must track straight ahead and be in alignment with front
wheels. No more than 5 degrees camber on any wheel. No center
steering. Quick release steering wheel is allowed, must maintain OEM
column. No aftermarket remote reservoir power steering.
SPRINGS/SHOCKS/STRUTS: All shocks and struts must remain OEM, in OEM
9. TIRES AND
WHEELS: OEM DOT 13, 14, 15 or 16 inch diameter unaltered passenger
tires only. Minimum 60 series, M, N, P, Q, R, S, T, and H speed
rated tires only. No racing, mud or snow tires. No re-caps,
softening, conditioning, grinding, sanding, siping or grooving
allowed. Must be OEM steel or aluminum wheels, with standard bead
bump and maximum seven inch width. Reinforcing of OEM wheel center
recommended. Front tires and wheels must be the same series, size
and offset (0.50 inch tolerance); rear tires and wheels must be the
same series, size and offset; do not have to match front to rear.
Tires must be inside of body. No wheel spacers or bleeder valves.
Must use one inch O.D. steel lug nuts on steel wheels. Front right
wheel may be changed to a racing wheel but no larger than 7. 10.
BRAKES: Must be steel, unaltered, OEM operative, four wheel disc or
drum brakes, and match year, make and model of car used. OEM master
cylinder only, in OEM location. No brake shut off or bias adjuster.
Steel brake lines only. 11. EXHAUST: Exhaust manifold must be
unaltered, OEM for year, make and model of car used. Smog pump,
catalytic converter and air conditioning compressor may be removed.
Exhaust must turn toward ground. No exhaust in driver compartment.
12. WEIGHT: No
ballast (extra weight) of any kind allowed. Any item deemed as
ballast will be required to be removed.
BATTERY/STARTER: One 12 volt battery only. Must be securely mounted
with positive terminal covered. Battery must be in Marine type case
if mounted in driver compartment. OEM starter only, must be in OEM
location. Car must leave initial staging area on demand, unaided, or
go to rear of that race.
GAUGES/ELECTRONICS: No unapproved cameras, transmitting or listening
devices (exception is one-way Race Receiver radio by officials). 12
volt ignition system only. No ignition boxes. No performance chips.
All ignition components must be unaltered, OEM and match year, make
and model of car used. Aftermarket analog tach, oil pressure and
water temp gauges only. Vehicle computer (ECU) should be mounted in
accessible location for inspection.
15. FUEL SYSTEM:
Must have complete, unaltered, OEM fuel system for year, make and
model of car used. Gasoline only, maximum 93 octane. No E85. No
performance additives. Gas tank ahead of rear axle allowed but must
install shield under it. Gas tank behind rear axle must be replaced
with maximum eight gallon fuel cell and relocated to trunk area.
Must mount with minimum two solid steel straps around entire cell,
two inches wide and 0.125 inch thick. Metal firewall or cell cover
must be between driver and cell. Fuel cell vent, including cap vent,
must have check valve. If racing fuel cell does not have aircraft
style positive seal filler neck/cap system - a flapper, spring or
ball type filler rollover valve is required. External electric fuel
pump wired to the ignition switch allowed with aftermarket fuel
cell. No cool cans. Fuel lines through driver compartment must be
steel. Aftermarket fresh air pipe and air filter allowed, but no ram
TRANSMISSION: Must use OEM, unaltered transmission that came in
year, make and model of car used. All forward and reverse gears must
be operational. Flywheel, flexplate, clutch assembly and torque
converter must be unaltered, OEM for year, make and model of car
used. No mini clutches or couplers. Must have inspection hole in
bell housing (accessible from top). No transmission coolers in
driver compartment. No torque dividing final drive. No locked
COMPARTMENT: Engine and radiator must be OEM, in OEM location for
year, make and model of car used. Engine used must be factory option
in make and model of car. May use solid engine mounts or safety
chains. No accumulators/accusumps.
18. ENGINE: 3 or
4 cylinder in-line engines only. Recommended: double overhead cam.
All engine components must be unaltered OEM for year, make and model
of car used. Must use OEM crank, rods, valve sizes, stroke, etc. No
aftermarket racing heads. No high performance or sport car engines
of any kind. No turbo charged, super charged, rotary engines, or
engines utilizing variable cam-timing.