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VRA MOD LITE RULES
2011 |
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1. BODY STYLES |
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(a) Modified appearing body style such as IMCA or DIRT
modified. These are to be known as Mod Lite body styles. |
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2.
FRAME AND ROLL CAGE |
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(a) Mainframe members will be minimum of 1" X 2" x .120"
wall rectangular steel tubing only. Mainframe rail consist
of the length between the front lower a-arm cross member and
the rear main roll bar upright. No aluminum allowed in cage
or frame.
(b) Mainframes will have a minimum of 3 cross members
between firewall and back of seat fabricated of same
material as frame rails. Alternate material may be steel
angle, min. 125" X 1.5" X 2". Cross bracing in floor under
driver strongly recommended. Rear frame rails at rear roll
bar must be 34” max and 30” minimum outside dimension. Rear
roll bar must meet same dimension as the frame it is mounted
to. Frame may taper forward of driver seat area. Front
engine area frame width must be 24: max and 20” min outside
dimension. Left and right frame rails must be the same + or
– ½”.
(c) Roll cage must be DOM steel minimum 1.25" x .083"
(d) All cars must have cage bars installed across door
openings on both sides. Bars to be welded in place as part
of roll cage. Minimum size 1" x .095”. Cars with bars
mounted on doors must have full doorframe and minimum of 2
horizontal crossbars. Minimum 1” x .083". Cars with bats
mounted on doors must have 1/4" x 2" steel stops welded in
on each side of opening, totaling a minimum of 4" on each
end of door.
(e) It is required to have a steel bar with a minimum size
of 1" X .065" from doorpost to doorpost, under the dash.
Must be welded.
(f) No down tube frame cars allowed. Any bars going from
cowl area to snout must remain below the upper line of hood. |
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3. OVERALL DIMENSIONS |
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(a) 42" min 50" max from ground - total car height.
(b) 124” maximum overall length bumper to bumper. |
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4.
SIDES AND REAR QUARTER PANEL
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(a) 84" max - Door and rear quarter length.
(b) 30" min 38" max - side height of rear quarter panel from
the ground. 30” max height of quarter panel. |
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5. HOOD |
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(a) 20" min 27” max - hood height excluding breather
protectors (bottom of frame rail to top of hood). Ram air
induction system prohibited. Rear of hood becomes part of
windshield area rules. No part of nose section (in front of
spindle centerline) may be wider than a maximum of 24”. Hood
may taper out to door panels at the rear. |
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6. ROOF PANEL |
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(a) 40" min 48" max - length of roof panel. 36" min 42" max
- width of roof. No part of roof panel may have more than
14o of angle rake. No deflector of any type on upper sides
or rear of roof panel. Roof entrance hatch optional.
7. REAR UPPER QUARTER PANEL
(a) 20" min 38" max rear upper side panel may contain
Plexiglas. Side panels maybe no higher than 3" at the rear
of the straight line of quarter panel top edge. Side panel
may be no higher than an imaginary line from the rear edge
of roof panel to 3” above the top edge of the rear quarter
panel. |
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8.
SIDE WINDOW |
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(a) 18” minimum side opening length. 10” minimum side
opening height front and rear. |
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9. INTERIOR |
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(a) 46" min 50" max - width of rear shelf and body panels.
Rear shelf may have no more than a 5o max rake and may not
be concave or convex in design. No lips or spoilers of any
kind. The rear frame area from the rear shelf downward a
minimum of 16” must be completely enclosed the width of the
frame. Louvers allowed no holes.
(b) 36" min 56" max - length of right side pod area with max
30o. Left side pod may be altered for driver access.
(c) Rear quarter distance from center of rear 20" min 30"
max.
(d) Cockpit cover with a max of ½” lip will be permitted
providing the on/off cutoff switch is reachable from outside
the car by safety personnel.
(e) Deck lid height from ground 30” minimum, 36” maximum.
Rear spoiler max of 4 ½” total material; with lip max ½”.
Spoiler and lip allowed on rear deck only.
(f) Side pod may not extend rearward past the centerline of
rear axle.
(g) Body must be centered on chassis.
(h) All dimensions will be measured to + or – ½” unless
otherwise specified. |
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10. BUMPERS |
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(a) Front maximum width 30". Bumper height 6” to 8" with
2-bar loop. Ground to top of bumper: 12” minimum, 16”
maximum. Bumper may not extend more than 12" forward of
front tires.
(b) Rear maximum width 56” with 3 vertical bars. Bumper
height 6” to 8" with 2-bar configuration. Ground to top of
bumper: 12” minimum, 16” maximum. May not extend more than
8” behind rear body panels.
(c) Bumper material must be hollow, round, and steel, with
max wall thickness of .095'' |
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11. NERF BARS |
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(a) Full-length nerf bars between front and rear tires
mandatory. Maximum outside diameter of 1.25” and .095''
maximum thickness. Must be hollow. May not extend out beyond
tread width more than 1" at the rear only. |
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12. FIREWALLS |
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(a) Firewall front and rear must be metal and must
completely separate engine and rear compartments from
cockpit. Engine protruding into cockpit must be enclosed. No
holes or gaps over 3/8th of an inch allowed. |
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13. SUSPENSION |
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(a) Front suspension must not extend rearward past the most
forward panel of the firewall.
(b) Rear trailing arm/radius rod specifications:
1) Arms may have a maximum length of 30”.
2) Torque-absorbing devices are NOT permitted.
3) Maximum 3 radius rods or 3 link suspension.
4) Single pan hard bar. J-bar allowed
(c) Wheel offsets are allowed.
(d) Hub offsets are NOT allowed. Hubs front and rear must be
within 1/2” distance from mainframe rail on either side of
car, measured from center of rotor to vertical plane of
frame rail. 60” maximum width – outside of tire to outside
of tire. Wheelbase will be 73" (+ or-) 1/2 ".
(e) Coil-over shocks are the only allowable means of
supporting the chassis. One shock and spring per wheel only.
(f) Shocks must be of all-steel construction, non-adjustable
type. No outside valve of any type will be allowed on the
shock. (factory or aftermarket)
(g) No driver shall have the ability to adjust suspension
from inside car.
(h) Straight front axles are prohibited.
(i) No leaf springs.
(j) No birdcage, Watts link, Jacobs ladder. Solid mounts
only.
(k) No torsion bar suspension system of any type allowed. |
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14. STEERING |
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(a) All steering components must have safety fasteners such
as cotter pins or self-locking nuts.
(b) Manufactured quick-release steering wheel hubs
mandatory.
(c) Rack and pinion steering is mandatory.
(d) No power assisted steering. |
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15. BRAKES |
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(a) Two rear wheel disc brakes minimum third and/or fourth
wheel brake optional.
(b) Rotors:
1) Steel rotors mandatory, .250 minimum thickness.
2) Cutting & scalloping of rotors will be allowed
3) Drilling of rotors is permitted.
(c) Adjustable brake bias and shut off allowed. Manual or
electric.
(d) Competition-type master cylinders allowed. |
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16. DRIVE TRAIN |
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(a) Must use steel drive shaft from transmission to rear
end. Minimum 2.50"dia x .083" wall thickness or 2"dia x
.120" wall thickness.
(b) Quick-change rear ends are allowed. No titanium axles.
(c) Floater rear ends allowed.
(d) Drive shaft tunnel must have minimum of 3, 180 -degree
hoops between firewall and seat back. Must be fabricated of
minimum .1875" X 1.5" steel bar. or 1" X .095" steel tube.
(e) Quick-change rear ends are allowed. No titanium axles.
(f) Floater rear ends allowed. |
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17. BATTERY, FUEL SYSTEM |
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(a) Battery and fuel pump must be mounted outside driver
compartment. Battery must be secure and held with non-
rubber strap. Electric fuel pump allowed.
(b) Fuel cell mandatory, maximum 5 gallons.
© Gasoline only, no additives. No Alcohol. No U4 type fuel
(d) Fuel lines for use in fuel injection applications must
be fuel injected rated.
(e) A direct manual cutoff switch shall be installed on the
right rear shelf of deck lid or right front of dash. The
emergency electrical cut off switch will be clearly located
and marked. |
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18. SEAT |
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(a) Seat must be high-backed aluminum, racing type. All cars
will have a permanent bar located behind top of seat at
shoulder level. Bottom of seat will not be more than 63"
back measured from upper ball joint. Seat may be tilted back
for added driver head clearance; however, no portion of the
seat may be back more than 68" as measured above.
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19.
WHEELS AND TIRES |
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(a) Steel wheels only, minimum wall thickness .090", 13"
only. Wheel width maximum of 8". All wheels must be the same
width.
(b) Hoosier DOT 205/60D/13, Medium only. All Hoosier factory
identification must be clearly visible and un-tampered.
(c) No tire softeners / conditioners.
(d) Grooving and sipping is allowed |
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20. ENGINE SPECIFICATIONS |
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(a) 1000 cc factory stock fuel injected Yamaha, Honda,
Kawasaki, and Suzuki are allowed that had at least 500
produced in the model year that were for sale to the general
public.
(b) The engine must be 3 years old to be legal. 2008 engine
will be legal for 2011. 2009 engine will not be legal until
2012. The manufacturer model year will determine the year of
the engine.
(c) Fuel injection system must be OEM. (Original Equipment
Manufacture) No aftermarket fuel injection allowed. Upper
butterflies may be removed.
(d) Four cycle, four cylinders only. Must have working
transmission, clutch, and starter, with all parts in place.
Complete Clutch assembly must remain in engine. No air
controlled shifting devices.
(e) Charging system must be in working order.
(f) Battery powered ignition only.
(g) No auxiliary starters.
(h) Factory stock computer (black box) required for all
engines. Computers may not be mapped or reprogrammed.
Computer must have original factory part # visible upon
inspection
(i) After market electronics that adjust Fuel Curve and
Timing are allowed. The only boxes that are approved are the
Dynojet 2, 3, and 3R. The Dyno jet 3 with the USB is allowed
with no external modules plugged in.
(j) After market oil coolers , oil pans and radiators
allowed.
(k) No aftermarket camshafts.
(l) No adjustable cam sprockets.
(m) No porting, grinding, polishing, or changing stock
configuration of intake or exhaust ports allowed. Casting
part lines must be visible upon inspection.
(n) No dry sump oil systems.
(o) Header must attach directly to head in stock exhaust
port location
(p) After market air cleaners that do not alter/modify OEM
velocity stack configuration are allowed. No alteration to
OEM velocity stacks allowed.
(q) VRA approved muffler mandatory. TBD.
(r) All engines will be inspected and sealed with approved
VRA seal prior to competition in a VRA event. Engines not
sealed will NOT be allowed to compete. Inspection and
sealing will be done by a VRA approved vendor at a nominal
cost.
(i) Engine setback: The "square of the engine" (rear of the
head) may not extend rearward more than 17" from the center
of front spindle. No part of the engine or transmission may
extend rearward more than 21 inches from center of front
spindle. |
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21. WEIGHT |
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(a) No car shall weigh under 1000 lbs without driver.
(b) No weight outside of car body, i.e. on nerf bars.
(c) Maximum ballast 80 lbs. |
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