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2008 O'Reilly/NCRA Modified Rules
Safety Rules:
The following safety guidelines will be in effect at all times and
will include any driver and car that competes in a O’Reilly/NCRA
sanctioned event.
SEATS:
Only
custom manufactured aluminum seats, acceptable to series officials,
will be permitted. The
seat must be properly installed.
All seats should have padded rib protectors.
An adequate padded headrest, acceptable to series officials,
is mandatory.
SEAT BELTS & SHOULDER HARNESS:
A lever-type quick release latch must be fastened to the lap
belt. A lap belt not
less than (3) inches wide is mandatory.
Both ends of the lap belt must be fastened to the roll bar
cage with high quality bolts not less than 3/8 inch in diameter.
The shoulder harness must be no less than (3) inches wide and
must be attached to a roll bar behind the drivers seat.
Where the harness crosses the roll cage, it must pass through
a steel guide welded to the roll cage that will prevent the harness
from sliding side to side.
Shoulder harness inertia reels will not be permitted.
A center (crotch) belt must be securely mounted to the lower
seat frame at the bottom and to the lap seat belt on the top.
Where the belts pass through the seat edges, it must have a
grommet installed, be rolled, and/or padded to prevent cutting of
the belt. All seat
belts and shoulder harnesses must connect at the lap belt with a
quick-release buckle acceptable to series officials.
Seat belts should not be used beyond (5) years.
The date of manufacture should remain visible at all times.
All cars should have either and approved window net in the
drivers door or arm restraints.
DRIVER UNIFORM:
It will be
required that at all times the driver wear a driving suit and gloves
of fire resistant material that effectively covers the body.
It is highly recommended that drivers use a Snell
HELMETS: Driver will be required to wear
a full face helmet at all time while practicing or in competition.
It is recommended that helmets meet the specifications set
forth in the Federal Motor Vehicle Safety Standard Regulations or
meet the specifications set forth by the American National Standards
Institute Inc. All
drivers must wear neck brace.
1. FRAME:
OEM complete. 1964 or newer,
perimeter American rear wheel drive passenger car frame only.
No sports car frames.
Frame must be full and complete, cannot be widened or
narrowed, and must be able to support roll cage on both sides,
except: weight jack in original center line of spring tower
allowed; frame may be cut a maximum 36” forward from center of rear
end housing. Horns may
be removed in front of steering box.
Front crossmember may be notched and boxed for radiator
and/or steering clearance.
Maximum seven inch wide opening in side of spring tower for
spring removal. Maximum
two-inch wide by four inch tall frame stiffener may be welded
directly to outside of left side frame rail.
Minimum wheelbase 108 inches.
Maximum 112 inches both sides.
Maximum overall width (front or rear) shall not exceed 78
inches from outside of tire to outside of tire.
No part of frame can be lower than four inches from ground
except front crossmember.
2.
Must consist of continuous hoops.
Minimum 1.75 inch O.D. tubing with a minimum wall thickness
of .095 inch for main cage.
Frame mounted in at least six places (low carbon or mild
steel recommended). Must
consist of a configuration of front, rear and top hoops connected by
tubing on sides or side hoops.
Driver’s head must not protrude outside cage with helmet on.
Roll cage must be securely supported and braced with minimum
one cross bar in top halo.
Foot protection bar required.
Main cage no further forward than rear of engine.
All bars forward of cage must be lower than hood.
3. BODIES:
1970
or newer American compact passenger car only, no panel cars or
station wagons. Stock
appearing front windshield and rear window support unit, painted
roll bars not acceptable substitute.
May utilize a flat half-windshield, with no wings, mounted to
the roll cage. Must have
a minimum of three windshield bars in front of driver.
(b) Firewall and floorboards are mandatory.
All body parts should be recognizable as factory production
vehicle. Fiberglass or
metal duplicates of body parts are permitted.
Homemade body parts may be constructed of steel, aluminum or
fiberglass. All NCRA
cars in competition must have a complete paint job.
Body must be the same width, front to rear, and parallel to
the frame. © Original
roof line of vehicle must closely be maintained.
Must be full size roof.
No wings or any other ground effects are allowed anywhere
outside or inside car.
Sail panels must closely resemble examples shown on body diagram and
be the same on both sides of car.
Any reinforcing lips on rear of sail panel must be 180 degree
bends. (d) all NCRA cars
must be numbered with large legible numbers on both sides, on top
and rear panel. Numbers
on sides and top of car must be in contrasting color from body, be
at least four inches thick and at least 20 inches high.
(e) Sponsor’s names must not interfere with car numbers and
must be neatly lettered.
(f) Engine compartment will remain open, no side panels; hood sides
may have maximum six inch drop and must be enclosed at rear of hood;
maximum hood scoop height—six inches.
Passenger side of body must be no further forward than rear
of block.
g.
(optional) Rear of bodies to be solid panel at least eight inches
high and include car
number and
NCRA decal. h. No panel
in front of right door to engine compartment.
No inner
panels. No car covers.
i. Driver and passenger side windows must have at least
12-inch opening, measured at center of window, whether the roof or
roll cage, and the highest point at the bottom of window, whether
the interior or body.
(b) SPOILERS: A rear
spoiler not exceeding 5 inches of total material and not exceeding
the width of the rear deck.
A maximum of 4 tapered supports may be installed on the front
of the spoiler no higher than the spoiler.
DRIVER COMPARTMENT:
Must
have minimum three windshield bars in front of driver.
Aluminum high back seat only and must be bolted in next to
left side frame rail and ahead of rear tires.
Bottom of seat can be no lower than bottom of frame rail.
Driver must be sealed off from track, driveline, engine, fuel
cell, canisters and pumps.
Oil coolers must not protrude above interior.
Accumulators cannot be mounted between driver and left side
door bars. No driver
adjustable devices while car is in competition except brake
adjuster. No mirrors or
reflective sun visors.
MINIMUM NCRA MODIFIED PURSE
B Feature:
1-10 transfer to the A Feature.
1. 1,000
16. 300
11 thru 20 pays: $100
2. 800
17. 300
3. 600
18. 300
C Feature:
4. 500
19. 300
1-10 transfer to the B Feature.
5. 500
20. 300
10 thru 20 pays: $75
6. 500
21. 300
7. 500
22. 300
D Feature:
8. 500
23. 300
1-10 transfer to the C Feature.
9. 500
24. 300
10 thru 20 pays $50
10. 400
11. 400
*Note:
Half Mile Tracks Will Start
E Feature:
12.
400
(24) Cars In The “A” Feature.
1-10 transfer to the D Feature.
13. 400
10 thru 20 pays $50
14. 400
15.
300
4. FRONT SUSPENSION
All components must be steel, unaltered OEM, in OEM location, and
replaceable by OEM parts, except tube-type upper A-frames
with aluminum/steel cross shaft, and mounts can be moved.
OEM replacement tubular control arms OK.
Lower A-frames must be right and left and of same design:
rubber, nylon or steel lower A-frame bushings, no offset or bearing
type, welded or bolted shock mount on lower A-frame.
Lower A-frame mounts and bolt holes on frame must be in OEM
location.
5. STEERING
All components must be steel, unaltered OEM, in OEM location, except
outer tie rod end and adjustment sleeve may be replaced by a minimum
.625 inch steel rod end and steel tube; spindles can be ground for
brake caliper clearance only.
Unaltered OEM replacement Pinto spindles, raised cast,
spindles must be right and left and of same design.
Bolt on spindle savers allowed.
Steel steering shafts and knuckles only.
Steering quickener, steering wheel and quick release may be
aluminum. Cockpit
steering may be modified, must be kept on left side.
No rack and pinion.
6. SHOCKS
One steel, non-adjustable, unaltered shock per wheel.
One additional shock allowed on rear suspension.
No threaded body, front coil-over, air, or remote reservoir
shocks. No Schrader
valves.
7. SPRINGS
Steel or composite leaf spring allowed.
One coil and/or leaf spring per wheel only.
One additional spring allowed on pull bar or lift bar, may be
progressive. Any coil
spring min.4.5 inches O.D..
No torsion bars or air bags.
8. REAR SUSPENSION
All components must be steel. No
covers allowed. All
trailing arms/link bars must be solid tubing.
Rear of frame may be altered to accept leaf or coil springs.
Steel coil-over eliminators or steel/aluminum coil-over kits
allowed. Must conform to
shock and spring rules.
One mechanical traction bar (pull or lift, not both).
All suspension parts must be visible on both ends.
9. REAR END
Any steel approved rear end allowed.
Safety hubs (floater) allowed.
All components must be steel except lowering blocks, cap and
drive flange. Full steel
spool, steel mini spool or welded rear ends only.
Steel axles only.
One piece drive flange only.
No torque dividing differentials.
No scalloped ring gears.
Steel tube quick change rear ends are allowed.
Steel axle tubes only.
Minimum 10” ring gear only.
No titanium, no aluminum birdcages, and no wide five hubs.
*Quick Change rear ends are optional not mandatory.
Aluminum spools, brackets and pinnon covers are OK.
10. BUMPERS/RUB RAILS
Steel only. Bumpers must be used
both front and rear at all times and welded, or mounted with
bolts. Must be
minimum 1.25 inch O.D. tubing.
.065 wall thickness on front.
.095 wall thickness on rear.
Two-bar front bumpers must be mounted frame-end to frame-end
no wider than width of material outside frame horns and with bottom
loop parallel to ground.
Top bar must be directly above bottom bar, minimum 6.5 inches apart,
measured center to center.
Rear bumper and nerf bars can be no wider than tires with no
sharp edges on either end.
11. TIRES
Must run Hoosier 83/8-15 A40 or
H-40 or 83/8-15 or A40 or H-40 “
12. BRAKES
Must be steel approved OEM, operative four wheel, drum or disc.
Must maintain minimum OEM dimensions for hubs/rotors and
calipers, cannot be lightened.
Bolt pattern maybe changed.
Larger studs allowed.
Rear rotors may be aftermarket, minimum 0.810 inch thickness.
Vented rotors only.
No scalloped rotors.
No brake shut-off or pressure sensitive devices.
One proportioning device allowed, front to rear only.
Brake lines must be visible.
13. EXHAUST
Round tube headers only. All
primary header tubes must enter directly into one collector at same
point at end of header and point rearward.
14.
Racing fuel cell required, maximum 32 gallon capacity, must be in minimum 18
gage steel container.
Cell must be securely mounted behind rear axle, between tires,
minimum of four inches ahead of bumper, minimum of ten inches above
ground. Must mount with
minimum two .125 inch thick solid steel straps, two inches wide
around entire cell. All
cell mounts must be steel, securely welded to frame/cage.
Protective tubing must cover rear and extend past both sides
of cell. No part of cell
shall be lower than protective tubing.
Fuel cell vents, including cap, must have check valves.
Pick-up must be on top or right side of cell.
Limit one fuel filter.
No cool caps.
If fuel cell does not have aircraft style positive seal
filler neck/cap system, a flapper, spring or ball type rollover
valve is required.
(a) One naturally aspirated 2 or 4 barrel carburetor only.
No adjustable carb spacers.
15.
Gasoline or alcohol. No
performance enhancing additives.
Upper cylinder lube allowed.
Fuel sample may be taken from any car at any time.
16. BATTERY/STARTER
One battery only. Must be
shielded and securely mounted between frame rails.
Must have capability of starting without being pushed or
pulled. Must leave
initial staging area on demand, unaided or go to rear of that race.
17. GAUGES/ELECTRONICS
No transmitting or listening devices, timing retard controls, or digital
gauges (including tach).
No electronic monitoring computer devices capable of storing or transmitting
information except analog tach.
No adjustable ignition control boxes.
Only one 12 volt ignition box allowed, must be out of
driver’s reach. No
additional ignition accessories allowed.
Only change allowed to ignition box is one high-end
rev-limiter setting.
This setting can be changed through one chip only, or an internal
setting inside box. No
electronic traction control devices.
18. TRANSMISSION/DRIVE SHAFT
Must have at least one gear forward and one reverse, plus a neutral
position. With motor
running and car in a still position, driver must be able to engage
car in gear and move forward, then backward.
Layne, Ernie Glide, Bert and Brinn transmissions will be
allowed as well as any OEM transmission.
No five speed transmission, “ in or out” boxes, or quick
change devices allowed.
Functioning shifter must be in stock location on transmissions
manufactured after 1995.
All manual gear-type transmissions must have a standard OEM case and
must have a working disc-type or approved cone-type clutch inside
and explosion proof steel bellhousing.
Automatic transmissions must remain in OEM stock appearing
automatic case. Original
bellhousing must remain.
Must have an approved scatter shield or blanket.
Scattershield may be constructed of 25-inch by three-inch
steel, 270 degrees around flexplate or flywheel.
No Brinn-Pro Series Transmission or Bert Ball Spline Transmissions.
(Effective
19. ENGINE COMPARTMENT
Rear of engine (bellhousing flange) must be mounted at least 72 inches
forward from centerline of rear axle.
Engine offset must be kept within 2 inches of centerline of
front crossmember with engine level.
Minimum 11 inch engine height from ground to center of
crankshaft. Radiator
must be mounted in front of engine.
Cooling system may be modified.
20. ENGINE SPECIFICATIONS
Any American make engine allowed.
Steel heads, block and oil pan only.
All engines must be able to be used in conventional passenger
car without alteration.
Engine mounts cannot be removed or altered.
Castings and fittings must not be changed.
No machine work on outside of engine.
“Wet” oiling system only.
21. WEIGHT:
Minimum weight limit of 2,450 lbs, no tolerance, after race with driver.
Weights must not be used in driver’s compartment or outside of the body or
hood area. Any weights
added to other areas of vehicles must be securely mounted and must
be painted white and have the car number on it, and attached with at
least two .5 inch bolts.
No titanium, magnesium or carbon fiber products.
No gun-drilled, tubular, hollow bolts or studs.
Steel fasteners only.
22. ASPIRATION:
One two-barrel or one four-barrel carburetor OK.
Must be naturally aspirated.
No fuel injection.
No electric fuel pumps.
23. ENGINE CLAIMING RULES:
Swap only including fly wheel and balancing plate.
Swap does not include; 1. clutch 2. pressure plate 3.
bellhousing 4. headers 5. carburetor 6. starter 7. motor mounts 8.
sending units and switches for oil pressure and water temperature 9.
carburetor adaptor 10. fan and pulleys 11. clutch ball 13. throw out
bearing 14. dip stick 15. water pump 16. fuel pump 17. distributor
18. plus wires 19. external oil restrictors (must furnish plugs) 20.
water outlet and restrictor.
First four position finishers must report directly to claim
area and are subject to engine swap by any other driver finishing
fifth on back in feature that has not been lapped by the fourth
place driver.
Failure to report directly to claim area will result in disqualification and
loss of money and points for first infraction (engine is still
claimable); will be treated as engine claim refusal for second
infraction. Driver
allowed one ONLY per event, regardless of outcome of that claim.
In case of multiple claim on same engine, a drawing will be held to
determine which driver gets the engine.
Driver making claim must drive his race car immediately after finish of
feature, under its own power, directly to claiming area.
Claims must be made to NCRA official immediately after end of feature race,
and claimed engine must be completely removed within one hour from
the time claim is made and driver agrees to swap claimed engine.
No one driver may claim any other one driver more than once during current
calendar year.
Refusal to swap forfeits all cash and contingency winnings for feature, and
trophies earned in feature, plus any NCRA points earned in feature
for that event. Any
driver refusing to swap engine, when claimed with rules, regardless
of his reinstatement with NCRA, loses his right to claim any NCRA
driver’s engine for 12 calendar months from date of refusal to swap.
Claim is not charged to claiming driver in case of a refusal.
Once an engine claim has been made and accepted, the engine is not to be
started under any circumstances.
The car is to be pushed to the area where removal will take
place. Any driver
starting a claimed engine will be immediately disqualified from the
event. All claimed
engines must be removed from car at the track; buyer must examine
engine before removal-once removal is started, sale is final.
No driver may claim more than two engines during current calendar year.
In the event of exchange, claiming driver pays for both
engines to be removed.