Body
a) The nosepiece style (GM, Ford, Mopar) must match the body style of
the car and be the same as the motor used.
b) All cars must have a minimum of half inch (1/2”) and a maximum of
one inch (1”) radius at the top of fenders, doors and quarter panels.
A sharp edge will not be permitted.
c) Floor boards and firewall must fully cover the driver’s area and
be constructed to provide maximum safety.
d) Legible race numbers, at least eighteen inches (18”) high are
required on each side of the car and on the roof.
e) Race number(s) must also be displayed on the front nose and rear
fuel cell and be a minimum of six inches (6”) in height.
f) No fins or lips of any kind are permitted anywhere along the entire
length of the car.
g) The body line must be a smooth even line from front to rear.
h) No wedge shape cars are permitted.
i) No “belly pans” or any type of enclosure on the bottom of the
car is permitted. A robust skid plate to protect the oil pan is
permitted.
j) No wings or tunnels of any kind are permitted underneath the body or
chassis of the car.
k) A maximum of one (1) stone deflector, for rear mounted oil pumps,
oil filters, and for the main oil tank will be permitted. The deflector
may be made of steel, aluminum, or heavy gauge wire. The cover may only
be mounted near the unit it is designed to protect with a maximum size
of eighteen inches square (18” x 18”) and mounted only from the
upper right frame rail to the lower right frame rail.
l) No panels of any kind under the rear deck running from the front to
the rear of the car are permitted.
m) Non-approved bodies may at the discretion on the tech inspector, be
assessed a fifty pound weight penalty.
n) Any style air cleaner scoop used must be positioned in front of or
around the air cleaner and can not exceed one inch (1”) in height
above any part of the air cleaner. The scoop may not have fins or
raised edges designed to direct air flow.
o) No cockpit adjustable components with the exception of brake bias
are permitted. No adjusters for adjustable shocks, hydraulic or
pneumatic weight jacks, trackers, ignition boxes or similar adjustable
components of any kind are permitted inside the cockpit of the car or
within reach of the seated driver. Taping over of the adjuster(s) is
not permitted. The offending component must be removed from the
cockpit.
Stock
Nosepiece
a) All stock nosepieces must be approved by Independent Racing Series
Technical Inspector.
b) Nosepieces must be made of molded type material.
c) Two piece noses must be fastened together in the center. Spacers
added to gain width are not permitted.
d) The nosepiece must be mounted so as not to alter its original shape.
e) The nosepiece can extend a maximum of fifty two inches (52”) from
the center of the front hub to the farthest point extending forward.
f) The nosepiece must have a headlight decal package affixed. A one
race grace period, running contrasting color tape in the shape of a
headlight will be permitted.
g) Front Fender flairs must be made of plastic and cannot alter the
original shape of the nosepiece. The front fender flairs cannot extend
beyond the front tire more than one inch (1”) in width with width
pointed straight.
Roof
a) The roof length size must be a minimum of forty four inches (44”)
to a maximum of fifty four inches (54”).
b) The roof width size must be a minimum of forty eight inches (48”)
to a
maximum of fifty two inches (52”).
c) The roof must be stock appearing and be mounted level within a max
of 2 degrees.
d) The roof height must be between forty five inches (45”) and forty
eight inches (48”) from the ground.
e) The roof must be mounted parallel to the body and near the center of
the car as viewed from the front.
f) A maximum one and one half inch (1.5”) roll, turned downward, is
permitted along the front edge of the roof. A maximum one inch (1”)
roll, turned downward, is permitted along the rear edge of the roof.
Two (2) bead rolls running length-ways and a rain gutter on each side
are permitted at a max height of three eights of an inch (3/8”).
(These rolls are permitted to help strengthen the roof.) No turn up at
the rear of the roof will be permitted.
g) No flat or odd shaped roofs are permitted. No bellied or hollow
roofs.
h) Any sun/antiglare shields may not exceed a four inch (4”) drop
from the top roof line, and must hinge for easy exiting.
Roof
Supports and Window Side Panels
a) All roof side panels must extend to the edge of the body.
b) Roof side panel window size must match the dimensions in the drawing
and be a minimum of ten by fifteen inches (10’’ x 15’’).
c) The window area may be covered with clear Lexan or equivalent, be
cut out, or be represented by a decal. Both roof support openings must
be covered or both must be left open.
d) Left and right side window panels must match.
e) A maximum bow of two inch (2’’) outward on the window side
panels as viewed from behind will be permitted.
f) Front roof supports up to two inches (2”) wide must extend forward
to the rear of the hood.
Front
Fenders, Fender Flares and Hood
a) The hood and front fenders must be level and flat from the left to
the right side of the car.
b) The line from front to rear fender heights must slope up.
c) No part of the fender or the hood can be outside of the body line.
d) The front fender can be a maximum of thirty seven inches (37”) in
height. Height is measured vertically from the ground to the top of the
fender behind the front tires.
e) Front fender flares must be made of plastic and cannot alter the
original shape of the nosepiece.
f) The front fender flares must cover the front tires and are permitted
to be a maximum of ninety inches (90’’) in width.
g) The front fenders flares may not be higher than the front fender by
more than two inches (2”).
h) Front fender flares must have collapsible supports.
Doors
a) The door to door measurement cannot exceed seventy six inches
(76”) in width at the top of the doors.
b) The door to door measurement cannot exceed eighty two inches (82”)
in width at the bottom in the center of the car.
c) Doors cannot exceed thirty seven inches (37”) in height measured
from the ground.
d) At no point can the door sides break inwards from the top seventy
six inches (76”) and bottom eighty two inches (82”) measurements.
No hollow or bellied doors permitted.
e) The minimum ground clearance permitted is three inches (3”).
Quarter
Panels
a) The maximum distance permitted from the center of the rear
hub to the top corner of the quarter panel is fifty two inches (52”).
b) The quarter panels cannot exceed seventy six inches (76”) in width
at any point behind the centre of the rear hub as measured at the top.
c) Rear decks must taper from seventy six inches (76’’), as
measured at the top over the rear hubs, uniformly back to seventy two
inches (72’’) at the spoiler, either, equally on both sides or on
the left side only.
d) The quarter panels cannot exceed eighty inches (80”) in width in
the center (nineteen inches (19”) height off ground) or at the
bottom.
e) At no point can quarter panel sides break inwards towards the center
of the car. No hollow or bellied quarter panes permitted.
f) The maximum distance from the center of the rear hub to the end of
the quarter panel is forty eight inches (48”).
g) The maximum height permitted from the ground to the top of the deck
is thirty eight inches (38”).
h) Tire clearance from the body should be a minimum of two inches
(2”).
i) No skirting is permitted to extend behind the quarter panel.
Spoiler
and Spoiler Supports
a) The rear spoiler must be manufactured of adequate strength
material such as lexan or aluminum.
b) The maximum overall length of the material used on the rear spoiler
is eight inches (8”). The maximum width of the rear spoiler and
supports is seventy two inches (72”).
c) The rear spoiler is not permitted to be suspended above the deck to
create a “wing effect”.
d) The rear spoiler must begin where the quarter panels end. No
extended decks permitted.
e) No more than three spoiler supports are permitted. The front edge of
the spoiler supports must be in line.
f) The outer spoiler supports cannot be mounted wider than the top of
the quarter panel.
g) Spoilers will be measured according to the total length of and width
of the material, in any shape or form. If an aluminum angle is used to
brace the upper edge of the spoiler, it may not add to the spoiler
height or length in any way.
Interior
a) No area of the interior of the cockpit can be less than
eleven inches (11”) below the roof and the roll cage for safety and
easy exiting of car from either side measured straight up and down.
b) Side windows must have fifteen inches (15”) minimum opening,
measured at an angle to the door.
c) No support bars are permitted to block the right window exit from
thecockpit.
d) A rock guard (lexan screen) can taper back from the steering wheel
to a height of one inch (1’’) in line with the driver’s chest
providing the eleven inch (11”) minimum clearance is met at any point
from the roll cage to the body or rock guard. Easy exit on right side
of the car is imperative.
e) Dropped interiors may begin no further forward than the rear engine
plate with a maximum of four inches (4”), and cannot drop below four
inches (4”) of the rear of the hood. The start of the dropped
interior may not be open, as this forms part of the fire wall. The
entire width must be closed off in sheet metal.
f) The interior must gradually taper up to the quarter panel height and
be level for twenty inches (20”) from the rear of the quarter panel
and deck.
Driver
Compartment
a) A full metal firewall must encompass the driver’s compartment from
front to rear, on both sides and the floorboards. Aluminum or sheet
metal is required.
b) The driver’s seat must be of a proper high back aluminum racing
seat design, located on the left side of the car and securely attached
to the frame. This seat must incorporate a padded headrest. A right
side padded head rest must be incorporated in the absence of a head net
or padded head support attached to the roll cage.
c) All cars must have a quick-release type steering wheel.
d) All cars must have a working starter, operated from inside the car.
e) No mirrors are permitted.
f) No radios are permitted in the car or on anyone connected with car.
g) The edges around the driver’s cockpit must be suitably protected
with trim or beading. Care must be taken not to have any sharp, jagged
or rough fasteners, brackets or anything else that could snag the
driver’s suit when the driver exits the car.
h) A substantial rock guard steel screen must be mounted in front of
the driver to protect him from flying debris, and rocks.
Frame
a) The wheel base width must be between a minimum of one
hundred and three inches (103”) and maximum of one hundred and five
inches (105”).
b) All frames must be of steel construction and must be a minimum of
two inches by two inches square (2” x 2”), or rectangular, with a
minimum material thickness of eighty three thousandths of an inch
(.083”).
c) If a round tube frame is used, the tubing must have a minimum of one
and three quarter inch (1.75”) outside diameter, with a minimum
material thickness of eighty three thousandths of an inch (.083”).
These frames must use 4130 Chrome Moly Steel or DOM for construction.
d) If the rear bumper is stubbed, it may only extend a maximum of eight
inches (8”) beyond the frame. Any stubbed rear bumper that extends in
excess of eight inches (8”) beyond the frame must be rounded and
directed eight inches towards the front of car.
e) No external rub rails are permitted.
f) It is recommended that all cars be equipped with a tow hook or
strap.
g) All battery supports must be braced in at least two axes, two
horizontal and one vertical.
Roll
Cage
a) Cars must have a suitable steel roll cage in the driver’s
compartment.
b) Should the drivers seat not have a suitable right side padded
headrest,
or right side head net, one must be attached onto the roll cage.
c) Side roll bars are mandatory and must extend into the door panels.
d) A minimum of three bars must be used on the left side of the car.
Each bar must be a minimum of one and one half inch (1 1/2”) in
diameter with a minimum thickness of ninety five thousandths of an inch
(.095”).
e) The roll cage must be welded to the frame.
f) The roll cage must be above the driver’s helmet.
g) For all new frames built in 2006 on, an extra vertical side brace
bar of one and one half inch (1 1/2’’) dia. x ninety five
thousandths of an inch (.095”) is required on left side in line with
the steering wheel.
Transmission
a) No direct drives are permitted. The transmission must be
bolted to the engine, and must have forward and reverse gears and must
be able to shift to forward or reverse with engine running. All cars
must be self starting.
Drive
Shaft
a) The drive shaft must be a minimum of two inches (2”) in
diameter. All drive shafts must be painted white.
b) Only one drive shaft is permitted.
c) The driveshaft must be protected with a minimum of one secure
driveshaft hoop or sling.
Rear
End
a) Any type of rear end differential is permitted.
b) No “live axle” rear ends are permitted.
c) No independent rear suspension is permitted.
d) Only floater “wide five” hub assemblies are permitted.
Brakes
a) All cars must be equipped with a sufficient braking system.
Shocks
a) Shocks must be constructed of aluminum or steel. Remote
reservoirs are permitted.
Springs
a) Coil springs must be steel. Leaf springs may be composite
or steel.
Wheels
a) Only steel or aluminum wheels are permitted.
b) The wheels must be mounted with lug nuts. No “knock-off”
mounting devices are permitted.
c) The maximum wheel width permitted is fourteen inches (14”).
d) Wheel spacers are permitted provided they do not cause the front
track width
to exceed the ninety inches maximum or rear track to exceed the
eighty-eight inches maximum measured outside to outside of the tire.
Tires
a) Hoosier—1200, 1300, 1400, 1600 (LM 20 and LM 40 are also Legal)
REAR ONLY = OPEN FRONT
American Racer—SD 33, SD 44, SD 48, and MD 56.
REAR ONLY = OPEN FRONT
b) Largest permitted tire is twenty-nine inches (29”) by eleven
inches (11”) by fifteen (15”) inches.
c) Maximum circumference permitted is ninety-three inches (93”)
d) Maximum cross section width permitted is sixteen and three-quarters
inches
(16 ¾”).
e) Hoops for inspection must pass over tire freely.
f) No tire softeners or conditioners.
Engine
a) Only V8 engines will be permitted with no limit on cubic inch
displacement.
b) Engines must be based on a factory design and must be naturally
aspirated. Aluminum or steel blocks are permitted.
c) Magnetos are permitted. However, the engine must have an operating
self starter.
d) The engine is permitted to be set back a maximum of twenty five and
one half inch (25 1/2”) from center of the ball joint to the front of
the motor plate/engine bell housing flange.
e) The carburetor is limited to 1 four barrel unit.
f) All engines are limited to one spark plug and two valves per
cylinder.
Traction
Control Devices
a) All traction control devices utilizing wheel sensors, automated
brake controls or any means of measuring ground speed to control wheel
spin are strictly prohibited.
b) Adjustable ping control devices, dial a chip controls, timing
controls, or
automated throttle controls are NOT permitted in the cockpit or any
other position accessible to the driver.
c) Any remote controlled components inside or outside the cockpit of
any
competitor’s race car are NOT permitted.
d) No data acquisition systems are permitted.
e) Any competitor found with any of the above will be fined, will be
disqualified and could be suspended for up to a year.
f) A competitor may be asked for his electronic ignition at any time
for tech. inspection. Failure to do so will result in Disqualification
and/or suspension.
Fuel
System
a) All cars must have approved fuel cells—35 gallon maximum.
The fuel cell must be in a completely enclosed, in minimum 20-gague
steel or sixty thousandths of an inch (.060”) aluminum container. The
entire container must be visible. The driver must be prepared to drain
fuel upon request for measurement.
b) Only racing gasoline or alcohol is permitted. No nitrous oxide,
nitro-methane, or propylene oxide is permitted. Fuel may be checked at
any time.
c) The fuel cell must be securely mounted behind the rear axle between
the rear tires, a minimum of four inches (4”) ahead of the rear
bumper, no lower than the quick change housing. It must be mounted with
a minimum of two one eighth of an inch (.125”) thick steel straps two
inches wide around the entire cell. Cells mounted in a square tubing
fame are permitted. All cells must be securely mounted to the frame.
The bolts used to mount the fuel cell must be a minimum of seven
sixteenths of an inch (7/16”).
e) No fuel injection system or electrical fuel pumps or any type of
pressurized fuel system is permitted. Only mechanical or belt driven
fuel pumps are permitted.
Exhaust
a) The exhaust is not permitted to be directed towards the
ground. (The exhaust must be parallel to the ground so as to disturb as
little dust as possible.)
b)
All headers must end with a collector.
c) Mufflers may be required at some tracks.
Weight
a) Any attached weights must be securely attached to frame
below the decking, painted white and have the car number clearly
displayed on them. Weights of up to 50 pounds must be secured by two
half inch (1/2”) Grade 5 bolts on two weight clamps. Weights secured
by one bolt and/or held on by a means other than accepted by the Tech
Inspector will not be permitted. Due to the high risk factor involved,
any car that loses lead weight during an event may be fined or face
disqualification. Clamp around weights are permitted.
b) No weights may be attached to rear bumper.
c) No lead pellets or liquid weights are permitted.
d) No driver-operated weight adjustment devices are permitted.
e) The total weight of the car with the driver must not be less than
2250 track scale pounds.
f) After any heat, last chance or feature, an additional weight
allowance will be given at the rate of 1 lb. per lap for fuel burn off.
(For example, 10 laps = 10 lbs, 50 laps = 50 lbs, 100 laps = 100 lbs.
etc.)
Other
a) No car will qualify without Tech Inspector approval. All cars must
be available for inspection prior to the advertised time of the
driver’s meeting. Following the drivers meeting, covers of any type
are prohibited until the feature is completed. All race cars are
subject to inspection by officials at any time.
b) All drivers must be equipped with an approved one way radio which
may be rented for the event at registration. Limited supplies of these
units are available for sale.
c) Series sponsor decals must be placed on the car to qualify for
contingency money
+ products.
SAFETY
EQUIPMENT
Seat
Belts
a) The use of at least an IRS approved five point seat belt system
including a crotch belt is required. The system is to be mounted to the
frame and not to the floor pan. The mounts must be run at the same
direction, as the belts are intended to secure the driver. The belt
webbing must be protected from any sharp cutouts in the sheet metal or
any other sharp edges. The date on the belt must not exceed 4 years.
b) Seat belt webbing that comes into contact with any sharp or
unradiused metal edge must be protected from that edge by means of push
on grip vinyl trim. The areas of concern are the webbing slots in the
metal racing seats. All the seat manufacturers either roll the edge or
supply the seat with trim protecting the webbing from abrasion or
cutting under impact conditions. Webbing entry slots into the seat with
an existing metal roll of one eighth inch (1/8”) smooth radius will
not require vinyl trim.
c) The areas where the webbing slot has been enlarged by filing or
cutting are of particular concern. In most instances the edges have
been left sharp, increasing the incidence of belt failure. As racing
seat belts are subjected to severe conditions, it is encouraged that
worn/frayed belts are replaced immediately and undamaged belts are
replaced every 24 months. The date sewn into the webbing should be used
as a guide. Where the seat belt date is known to be “new old
stock”, it is acceptable practice to extend the replacement date on
that set of belts to 36 months from date of manufacture. Belts older
than 48 months will not be permitted for the 2007 season. Damaged belts
will also not be permitted.
Other
a) There must be no sharp or protruding edges in or around the cockpit,
which
would impede the driver’s rapid exit from the car.
b) A headrest (behind the head) with padding is required.
c) A right headnet in the absence of a padded right headrest is
required. Headnets must be equipped with quick release mechanisms.
d) There must be a marked electrical kill switch in reach of driver.
e) There must be a marked fuel shut off valve in reach of driver.
f) All drivers must wear a clean one-piece IRS approved driver’s
suit, quilted or with underwear, head socks, gloves, foot socks and
shoes to IRS approved specifications.
g) An undamaged Snell SA95 or newer spec full face helmet is mandatory
for all events including track packing.
h) All crews must carry an operable fire extinguisher of 20 pounds
marked with the car number in 2 inch (2”) numbers/letters in the rear
of their transporter, capable of extinguishing gas and oil fires.
i) Neck collars or similar restraints are suggested.
j) Arm restraints are suggested.
k) Flame retardant seat, roll bar, knee and steering pads or padding
are required.
l) Driver’s suits, gloves, shoes and helmets must be presented at
Tech inspection.
|