Colorado Outlaw Racing Assoc.
(New
Rules are highlighted in yellow)
MODIFIED
- 2012
Revised November, 2011. Revisions/clarifications underlined, recommendations italicized. Refer to www.imca.com for General Rules.
The rules and/or regulations set forth
herein are designed to provide for the orderly conduct of racing events and to
establish minimum acceptable requirements for such events. These rules shall
govern the condition of all events, and by participating in these events, all
participants are deemed to have complied with these rules. NO EXPRESSED OR
IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATIONS OF OR COMPLIANCE WITH
THESE RULES AND/OR REGULATIONS. They are intended as a guide for the conduct of
the sport and are in no way a guarantee against injury or death to a
participant, spectator or official.
The race director shall be empowered to
permit reasonable and appropriate deviation from any of the specifications
herein or impose any further restrictions that in his opinion do not alter the
minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY
SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation or
deviation of these rules is left to the discretion of the officials. Their
decision is final.
1. SAFETY EQUIPMENT: Rules apply at all times car is on track.
Snell-rated SA2005 or SA2010 helmet required. Roll bar padding required in
driver compartment (Fire retardant recommended). 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
restraint system with no neck collar. Recommended: Fire retardant head sock
and underwear; collapsible steering shaft. Driver-side window net required,
minimum 16 inch by 20 inch ribbon or mesh style, 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
(Y-type shoulder harness not allowed), must be mounted securely to roll cage, recommended
to be no more than two years old. Kill switch required within easy reach of
driver and must be clearly marked ‘OFF’ and ‘ON’.
2. FRAME: 1964 or newer OEM 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, exceptions are: weight jack in original center line of
spring tower allowed; frame may be cut a maximum 36 inches forward from center
of rear end housing; horns may be removed in front of steering box and notched
maximum one inch at bottom for tie rod clearance; 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. See www.imca.com for OEM
frame dimensions. Minimum wheelbase 108 inches, maximum 112 inches, both sides.
Maximum overall width 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.
3. ROLL CAGE: Must consist of continuous hoops, minimum
1.75 inch O.D. tubing, with minimum wall thickness of 0.095 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.
4. DOOR BARS: All driver side door bars and uprights must
be minimum 1.5 inch O.D. with 0.083 inch wall thickness. Minimum three driver
side door bars, parallel to ground and perpendicular to driver, and welded to
front and rear of roll cage. Passenger side must have at least one cross door
bar, horizontal or angled, minimum 1.25 inch O.D. with 0.083 inch wall
thickness, and one top door bar, minimum 1.5 inch O.D. with 0.083 inch wall
thickness. Steel door plate, 18 gauge or 0.049 inch minimum thickness, must be
securely welded to outside of driver side door bars and cover area from top door
bar to bottom door bar and from rear hoop down-post to five inches in front of
seat. Must be visible for inspection.
5. BODY: (See diagram) No composite or plastic body panels allowed except roof rock guard and hood scoop.
Body must be same width, front to rear, and parallel to OEM frame. Aluminum nose panel must be flat. Maximum
2.250 inch side fins allowed on aluminum nose. MD3 plastic nosepiece,
part#020-410 allowed.
All nose panels may be no wider, or lower than two inches outside of front frame
horns and remain within 0.5 inch tolerance
outside confines of front bumper. Plastic nose must be mounted in an approved
manner and can extend no further back than 6 inches from front of hood. Cooling holes allowed. Engine compartment must
remain open (no side panels). Hood must be level or sloped down at front,
enclosed and maximum two inches above interior deck
at rear. No reverse hood rake allowed. No
panel in front of right door to engine compartment. No inner panels. No car
covers. Must have front and rear roof support posts. Driver and passenger side
windows must have at least 12 inch opening (height and width), measured at
center of window, between lowest point at top and highest point at bottom. Sail
panels may not extend ahead of back of seat. May use Lexan in sail panels. Roof
must be fiberglass or aluminum, full size and rounded down in all directions
(see diagram). No dished roofs allowed. Driver roof hatch allowed. Maximum 1.5
inch rolled down rock guard allowed on roof front. Maximum four inch roof sides
allowed. Maximum one inch ridge down sides of roof. Maximum one inch rear roof
stiffener (must face down). No fins, lips, wings or spoilers. Maximum four inch
plastic skirting allowed on bottom of doors and quarters. No reflective doors or
quarter panels. Body may be maximum one inch outside
of rear tires (both sides) for clearance.
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.
6. DRIVER COMPARTMENT: Must have minimum three windshield bars in
front of driver. Lexan or aluminum cowl panel in front of driver can be no wider
than cockpit and no farther back than steering wheel. Minimum 0.125 inch
aluminum, or 0.060 inch steel, complete floor pan required. Aluminum high-back
seat only and must be bolted in, using minimum 0.375-inch bolts, 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, cannisters and pumps. Oil coolers must not protrude above interior.
Accumulators cannot be mounted between driver and left-side door bars. No
driver-adjustable devices allowed while car is in competition except brake
adjuster. No mirrors of any kind.
7. FRONT SUSPENSION: All components must be steel, unaltered
OEM, in OEM location, and replaceable by OEM parts, exceptions are: tube-type
upper A-frames with or without aluminum or steel cross shaft, and mounts can be
moved; stamped steel OEM replacement lower A-frames; rubber, nylon or steel
lower A-frame bushings, no offset or bearing type; welded or bolted shock mount
on lower A-frame; OEM or OEM replacement ball joints allowed. Lower A-frames
must be right and left, and of same design. Lower A-frame mounts and bolt holes
on frame must be within OEM specifications. Sway bar must be unaltered OEM. No
bump stops of any kind allowed.
8. STEERING: No rack and pinion. All components must be
steel, unaltered OEM, in OEM location, exceptions are: outer tie rod end and
adjustment sleeve may be replaced by a minimum 0.625 inch steel rod end and
steel tube; spindles can be ground for brake caliper clearance only; unaltered,
OEM or OEM replacement Pinto spindles with ‘IMCA’ raised cast; bolt on
spindle savers allowed; steel steering shafts and knuckles only; driver
compartment steering may be modified, must be kept on left side. Spindles must
be right and left, and of same design. Quick release required - steering
quickener and steering wheel may be aluminum. Idler arm, pitman arm, and center
link must match frame.
9. SHOCKS: One steel, nonadjustable, unaltered shock
per wheel. One additional shock allowed in lift- or pull-bar area. No external
or internal bumpers or stops. No threaded body, front coil-over, air, or remote
reservoir shocks. No Schrader or bladder type valve allowed. Front half may be
shielded. One or all shocks may be claimed per event for $50 each, counting as
one claim on card, following shock claim procedures (Refer to www.imca.com
).
10. SPRINGS: One steel, non-progressive coil spring per
wheel only. One additional spring allowed on pull bar, may be progressive. All
coil springs must be at least 4.5 inches O.D. No torsion bars, air bags, inner
liners or spring rubbers allowed. Steel or composite leaf spring allowed.
11. REAR SUSPENSION: No independent 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 or aluminum coil-over kits allowed - must
conform to shock and spring rules. One mechanical traction pull bar allowed. No
lift, brake or sway bars. Rubber bumpers allowed pull bar or panhard bar only.
Solid safety chains, cables or tethers permitted frame to axle housing only
(cannot be mounted to any floating device), no springs or rubbers allowed.
Minimum 19 inch long panhard bar, measured straight line, center to center.
12. REAR END: Any steel approved OEM passenger car or
truck rear end (housing and carrier) allowed. Safety hubs (floater) allowed. All
components must be steel, except lowering blocks, axle cap, drive flange.
Inspection hole required in housing. Full steel spool, steel mini spool or
welded rear ends only. Steel axles only. No quick change devices, or cambered
rear ends. One piece drive flange only. No torque dividing differentials. No
scalloped ring gears.
13. BUMPERS: (See diagram) Steel bumpers must be on
front and rear at all times and welded, or mounted with minimum 0.375 inch
bolts.
Rear
bumper must be constructed of solid square, or minimum 1.25 inch O.D. tubing
with 0.095 wall thickness (similar to diagram), maximum six inches beyond rear
deck, no wider than five inches outside of rear frame rails. If wider than five
inches outside rear frame rails, must be capped and bent forward 90 degrees, or
constructed in a loop design. Must have at least one upright, minimum 1.25 inch
with 0.065 wall thickness, from bumper to fuel cell guard. Two-bar front bumper
must be minimum 1.25 inch O.D. tubing with minimum 0.065 wall thickness (maximum
0.095 inch) 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.
14. TIRES/WHEELS: Must use unaltered Hoosier Race tire,
G60-15 with IMCA stamped on sidewall. No chemical softening, conditioning, or
grooving of tires (refer to www.imca.com
for automatic penalties). Tires may be ground or siped within confines of tread
(not past factory straight line). No re-caps. All wheels must display white
‘IMCA approved’ decal and wheel manufacturer decal. Aluminum, composite or
steel spacers allowed. May use IMCA approved bead lock, on right rear only.
External, steel bead lock only and it cannot make wheel any narrower than 8
inches and no wider than 8.75 inches. Must use only steel bolts. Foam type or
plastic outer mud cover allowed on right side wheels. Inner mud cover allowed on
left rear only. Rim-mounted bleeder valves allowed. Steel lug nuts only.
15. 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 may be changed. Larger studs
allowed. Rear rotors may be aftermarket 0.81 inch thickness (new). Vented rotors
only, no scalloped or ceramic coated rotors. No brake shut-off or pressure
sensitive devices. One front to rear proportioning device allowed. Brake lines
must be visible.
16. EXHAUST: Round tube headers only. All primary header
tubes must enter directly into one collector at same point at end of header.
Schoenfeld mufflers, stamped IMCA609, must be used if track has noise reduction
rule of 98 d.b. or more (exception is California). Extreme Muffler part #
1014-3030, or part # 1114-3535, are highly recommended for tracks that require
noise reduction of 97 d.b. or less. All exhaust must go through mufflers, two
per car, one per header. No merge collectors. No exhaust sensors. Pan-evac system allowed.
17. FUEL SYSTEM: Mechanical or belt driven fuel pump only
and must be mounted at front of engine. Racing fuel cell required, maximum 32
gallon capacity, must be in minimum 20 gauge steel container. Cell must be
securely mounted behind rear axle, between rear tires, minimum of four inches
ahead of bumper, minimum of ten inches above ground. Must mount with minimum two
solid steel straps around entire cell, two inches wide and 0.125 inch thick. 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 vent, must have check
valves. If fuel cell does not have aircraft style positive seal filler neck/cap
system - a flapper, spring or ball type filler rollover valve is required.
Pick-up must be on top or right side of cell. Limit of one fuel filter. No cool
cans. Air cleaner top/stud cannot direct air into carburetor. No top flow air
cleaner housings or cold air boxes. One naturally aspirated two- or four-barrel
carburetor only. One carburetor adapter/spacer allowed, maximum 2.20 inches
thick, including gaskets. No adjustable throttle bore carburetor spacers.
18. FUEL: Gasoline or alcohol. Racing fuel allowed.
NO performance-enhancing additives. Upper cylinder lube allowed with alcohol
only. (Refer to www.imca.com for
automatic penalties).
19. WEIGHT: Minimum weight limit of 2,450 pounds, no
tolerance, after race with driver in car. No weights and/or loose objects in
driver compartment, above interior deck or outside body. Weights must be
securely mounted to frame or roll cage and painted white with car number on it.
Must be attached with at least two 0.5 inch bolts. No titanium, magnesium or
carbon fiber products. Only carbon fiber components allowed are rock guard and
hood scoop. No gun-drilled, tubular, hollow bolts or studs. Steel fasteners
only.
20. BATTERY/STARTER: One 12 volt battery only, must be securely
mounted between frame rails, and positive terminal must be covered. Car must
have capability of starting without being pushed or pulled. Car must leave
initial staging area on demand, unaided, or go to rear of that race.
Reverse-mount starters with OEM case transmissions only, see transmission rules
for specifics.
21. GAUGES/ELECTRONICS: No unapproved cameras, transmitting or
listening devices (exception: one-way "Raceceiver radio by officials, REQUIRED
by EPCS), timing retard controls, or digital gauges (including tach). No
electronic monitoring computer devices capable of storing or transmitting
information except memory recall analog tach. All cars MUST use max 7,800 rpm
rev limiter chip. This may be accomplished using one, non-adjustable, 12 volt
ignition box with one high-end rev-limiter setting or an internal setting inside
box. MSD #8728 rev-control or MSD #8738 additional rev control box allowed.
Preset Crane #6000-6478 ignition box allowed. No additional ignition accessories
allowed. All components must be out of reach of driver, but accessible for
inspection. No magnetos or crank triggers. No electronic traction control
devices (Refer to www.imca.com for
automatic penalties).
22. TRANSMISSION/DRIVESHAFT:
Must have at least two forward gears and
one reverse, plus a neutral position. With engine running and car in still
position, must be able to engage car in gear and move forward, then backward.
OEM production type or IMCA approved aftermarket transmissions allowed -
two-speed, three-speed, four-speed and automatic. No five speed (or more)
transmissions, ‘in and out’ boxes, or quick change devices allowed.
Functioning shift levers must be in OEM location on all OEM production type
transmissions. All belt drive pumps must be mounted on front of engine.
Flexplates must be full, steel, unaltered OEM, or OEM replacement. Flywheel/flexplate
must bolt to engine between clutch assembly and crankshaft and all driveline
components within bellhousing must rotate while car is in any gear. Transmission
must be one of the following designs:
OEM Manual: Must have a standard OEM case and working
disc-type clutch or approved cone or disc-type coupler inside an explosion-proof
steel bellhousing. One flywheel only, minimum 8.5 inch diameter. Diameter of
clutch disc must be a minimum of 5.5 inches. Clutch assembly must be steel,
except housing, which must be steel and/or aluminum. Bellhousing can have only a
hole for throwout bearing lever or hose, must be 270 degrees around top of
clutch and flywheel area. Standard or reverse mount starter allowed, must
directly engage flywheel.
Automatic:
Must remain in OEM or OEM replacement case, with a functioning OEM appearing
pump. Aluminum OEM bellhousing may be replaced with aftermarket explosion-proof
aluminum bellhousing. Original OEM bellhousing must have approved scattershield
constructed of minimum 0.125-inch by three-inch steel, 270 degrees around
flexplate.
Aftermarket Manual: Must be IMCA approved, aluminum case, with
internal clutch. Must bolt to explosion-proof steel bellhousing, and use full,
steel, unaltered OEM or OEM replacement flexplate with starter mounted in OEM
location. No coatings or paint allowed on transmission case.
Drive Shaft: Minimum two inch diameter steel drive shaft
and must be painted white. Steel slip-yokes only. 360-degree drive shaft loop
required and must be constructed of at least 0.25 inch by two inch steel, or one
inch tubing, mounted six inches back from front U-joint.
23. 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 two 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.
Overflow tubes must be directed to ground between frame rails.
24. ENGINE
SPECIFICATIONS: Any American make steel engine block
allowed. Aftermarket and OEM performance blocks allowed. Cast
iron or aluminum intake manifolds only. Steel cylinder heads
and oil pan only. Flat tappet cam/lifters and stud-mounted rocker arms only. Magnetic
steel retainers only.
No shaft or pedestal rocker arms, titanium engine components, stud girdles or
mushroom lifters. Lifter diameter and configuration must match OEM passenger
block. OEM firing order cannot be changed (GM: 1-8-4-3-6-5-7-2). All engines
must be able to be used in conventional passenger car without alterations.
Engine mounts cannot be removed or altered. Castings and fittings must not be
changed. No machine work on outside of engine (no lightweight engine blocks).
All belt driven accessories must be on front of engine. ‘Wet’ sump oiling
system only. External oil pumps go with engine if claimed.
25. ENGINE CLAIMING
RULES: Refer to www.imca.com
for claim eligibility requirements.
(A)
$1,050 cash, or $100 and exchange, claim on engine, flywheel and balancing
plates ($25 goes to wrecker and $25 to official for each engine). Claimed driver
has option of accepting cash, or exchanging engines with claiming driver.
(B)
Claim does not include - 1. clutch, 2. pressure plate, 3. bellhousing, 4.
headers, 5. carburetor, 6. starter, 7. motor mounts, 8. oil/temp. sending units,
9. carburetor spacer, 10. fan and pulleys, 11. clutch ball, 12. clutch arm, 13.
throw out bearing, 14. dip stick, 15. water pump, 16. fuel pump, rod and plate,
17. distributor, 18. plug wires, 19. water outlet and restrictor, 20. breathers.
26. POINT
STRUCTURE/PROCEDURES: Refer to www.imca.com
for automatic penalties.
27. EIRI: (Except in rare instances) Decisions of
IMCA Officials are final and binding without exception. In some cases, track
safety rules may take precedence over IMCA rules - any discrepancy between IMCA
and track rules should be brought to the attention of IMCA. Any rule changes or
clarifications during the course of the year will be amended at www.imca.com as
well as published in Inside IMCA, the official newsletter of IMCA, and will
be considered as an official part of these rules.
For more information,
call Tom Gutowski at 402-350-6120 or IMCA at 319-472-2201.
Copyright© 2012 IMCA. All rights reserved.
International Motor
Contest Association
1800 West D Street - P.O. Box 921
Vinton, Iowa, U.S. 52349
Phone: 319.472.2201 - Fax: 319.472.2218