New Tire Rule

Wheels and Tires

 1. Maximum right rear wheel width is 18 inches, left rear wheel width 15 inches. Wheels may be either aluminum or steel.
2. No stock, wire, plastic, titanium, or carbon fiber wheels allowed.
3. May run beadlock on any wheel.
4. Right rear tire must be a Hoosier Tire 102.0/16.0-15 with VRA stamped on tire. (Unless other wise specified) Left rear Hoosier RC 1 series. Two front tires must be Hoosiers.
5.
No tire softening or conditioning allowed. All tires in all VRA divisions must conform to VRA Rules and regulations at all times for the division they are being used in. Any attempt to modify any tire by softening, removing tire sidewall labeling by any means, etc. shall be met with penalties, fines and suspensions. All tires must remain within specified hardness ratings and retain all mold markings as manufactured. Tires found to be non-conforming in post race inspections will be confiscated and drivers will be penalized for their use.
a. Tires may be durometered by VRA Officials as the cars come through pre-race tech, prior to going onto the track for any race, at the end of competition or at any other time as requested by VRA Officials. Testing may be random and not only for the top finishers at the end of the night's racing.
b. Tires found to be out of compliance in post race inspections will be confiscated and the car on which they were used and driver of that car will be disqualified from that nights competition with loss of points and purse. Additionally a $500.00 fine will be assessed and a one race suspension of car and driver will be levied.
c. If the tire is found to be non-conforming prior to competition in pre-race tech or in pre-race staging, the car will not be allowed to compete until it is removed from the car and a proper tire installed. No time will be given for the non- conforming tire/tires to be changed. The car may enter competition if it returns to the staging area prior to the track being closed in preparation for racing event it was staged to compete.
6. Tire Protest: Any VRA driver may protest a competitors tire for the race they are mutually competing in per VRA protest rules.
a. When the protest involves tire softening or conditioning, the protest fee is $500.00 and the protesting driver must specify which tire they wish to protest.
1. The protested tire will be confiscated and cut up for testing by an outside tire testing facility.
2. If the tire is found to be out of compliance the fee will be returned to the protesting driver and the driver of the protested car will then receive a $500 fine, a one race suspension, loss of purse for the event protested and loss of all earned season championship points.
3. If the tire is found to be in compliance the protest fee, less testing cost, will be given to the protested driver.
4. At any time VRA may confiscate any tire to send it in for testing. If found to be illegal all fines and penalties in this section will apply.
7. No recaps allowed

2011 Sprint Car Payouts 

VRA SPRINT CAR RULES


Safety

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All cars must be equipped with the following:
1. Working Ignition switch in cockpit.
2. Check valve in fuel line vent.
3. Working fuel shut-off valve in cockpit.
4. Brakes: Minimum three wheel working brakes. (in board brakes allowed)
No titanium rotors allowed.
5. Front and rear bumpers, the rear bumper must be steel, attached in a safe manner. No     cotter keys or rivets.
6. Quick release steering wheel. Bolts must be safety wired and equipped with a center pad.
7. Roll cage padding in areas that may make contact with head.
8. Headrest with resilient material. It must be mounted behind driver's head and firmly supported. Seats with built in head rests ok.
9. Competition approved 3-inch seat belts, including 3-inch over the shoulder and 2-inch adjustable crotch strap and arm restraints. 2 inch wide over the shoulder belts may be used only with an approved head and neck restraint device. Metal to metal buckles required on seat and shoulder belts. Seat belts not to be more than two (2) years old. No cam lock type latches allowed.
10. Full face Snell SA2000 or newer helmet.
11. All drivers must wear SFI rated fire suite, a minimum two (2) layers, gloves, shoes, socks, hood, and neck brace whenever car is on racing surface.
12. Properly attached roll cage net on right side mandatory, except on cars equipped with full containment type seats. Net shall be securely attached. No temporary fasteners such as tie wraps, bailing wire, tape, etc.
13. Rock screen mounted in front of driver in cockpit windshield area to provide driver protection required.
14. The drive shaft must be fully enclosed. Shaft strap or drive loop mandatory. Must be located at center portion of drive shaft. Buckley joint must be shielded in such a manner to protect the driver from errant fluids.
15. Driver’s head must be a minimum of two (2) inches below the lowest section of the top of the roll cage when securely belted into the car with helmet on. A VRA tech approved halo may be added to the top of the cage if needed.
16. Fuel cell safety valve recommended. Must be mounted on driver’s left side of roll cage twelve (12) inches below top of cage.


Body and Chassis

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1. Any sprint car chassis is allowed, but it must pass any test prescribed by safety inspectors to insure its safety of design and construction. No roadster type chassis allowed. Only sprint appearing type bodies, tails, and hood will be allowed. The roll cage must be of a four-post design. The cage must be constructed of 1 3/8"OD x .095 inch wall thickness minimum. No dirt champ cars. No elliptical (oval shaped) tubing used on or as a part of the main structure. Minimum wheelbase of 83 inches, maximum wheelbase 90 inches. No titanium rotating parts parts allowed. All chassis materials must meet chromoly standards.
2. Fuel cell securely mounted. Bladder mandatory. May not be pressurized. Fuel cell must be mounted directly to chassis. No spacers. Minimum of four (4) mounting points. All mountings subject to tech inspection and approval.
3. Securely mounted bumpers and nerf bars mandatory. No aluminum frames, bumpers, or nerf bars. Nerf bars must not extend outside of tires. Side nerf bars which cover at least ¾ of the rear tire width, three (3) point attachment.
4. All cars must start and complete each race with side and rear nerf bars intact. Cars must start race with front bumper intact but may continue to run with front bumper missing if lost during event.
5. VRA approved mufflers are mandatory and must meet the current requirements. Cars may not continue to run if they lose a muffler during competition.
6. Headers must be a minimum of .035.
7. Steel or aluminum brake rotors only. No Titanium rotors allowed.
8. No two-way radios or communication devices allowed. VRA may require an official one way receiver to communicate with our officials. This radio may be required in some divisions and will have to be purchased and maintained by the driver or car owner.
9. No rear view mirrors.
10. All seats must be bolted to the frame with a minimum of four (4) locations (2 on the bottom and 2 in the back) with 3/8" diameter, grade eight (8) minimum, bolts and 1 ½" OD steel flat washers between the head of the bolt and seat.
11. Rear end: Rear axle must be of open tube or full floating axle type.
12. Throttle pedal toe loop mandatory. Two throttle return springs mandatory. One on pedal linkage and one on injector linkage.
13. Any throttle cable must be of push/pull design, such as a Morse Cable type.

Shock Absorbers

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14. You may have two adjuster knobs in the drivers cockpit for shock absorbers. (ie. You may control the compression and rebound on one shock absorber or control compression or rebound on two separate shocks). No other driver adjustable suspension allowed.
15. No forced air induction allowed. (ie. sealed ram induction to injectors)
16. All cars must use a VRA approved drag link retention strap at all times.


Minimum Weight Rule

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1. A car must weigh a minimum of 1,500 pounds, with driver, after race.

Engine Rules
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1. Steel, small block, 360 Cubic inch displacement (360 plus 1% =363.6) Chevrolet type engines only. All cars must be fuel injected no carburetors. No throttle body or plenum type injectors allowed.
2. No V-sixes.
3. No Titanium in engines, excluding valves, valve retainers, and cam drive spud.
4. Aluminum heads are allowed.
5. No down nozzle injectors.
6. Injectors: No relief hole may be drilled above the butterfly on any injector. No alteration of injector manifold mounting hole will be allowed.
7. Heads: No Brodix #12 heads, no 18 degree heads, no canted valve heads, no roll over heads, no heads other than original 23 degree valve angle heads. All aluminum heads must remain within 1 degree of the original 23-degree valve angle.
Intake Restrictor Top of Page
8. Approved heads must have an unaltered ASCS intake restriction gasket installed or a set of 1 7/8 inch intake restrictors.
A. ASCS intake restriction gaskets must remain unaltered with absolutely no modifications to bolt holes or port sizing! These gaskets are to be installed with the logo to the top. The ASCS restrictor gasket must protrude a minimum of .150 inch into the roofline of the injector port. The .150 inch protrusion must extend fully across the roofline of the intake port in the manifold. There shall be no streamlining or recontouring of intake ports or injectors to reduce the effect of the restrictor gasket. No step studs or relocating bolt holes. You cannot enlarge or relocate restricting gasket bolt holes.
B. VRA will allow two different 1 7/8 restrictors types. The intake restrictors may be made of aluminum or nylon.
Type 1 will be 2 inches long with the 1 7/8 restriction being 1 inch long in the center of the restrictor with a ½ inch bevel on the top and the bottom.
Type 2 will be 3 inches long with the I 7/8 restriction being at least 2 inches with a 5/8 inch bevel on the top while the bottom can be flat or beveled.
One restrictor must be securely mounted into each injector tube, either top, middle or bottom. The injector tubes can not be molested in any way to compromise the effect of the restrictors. The restrictors must be able to pass VRA inspection with a 1 7/8 go-no go gauge.
9. Penalty for altering an ASCS gasket or restrictor is a mandatory three race suspension of car and driver, forfeiture of all points and moneys won during the race, after which the infraction was found and $500.00 fine. The fine applies to car owner and must be paid prior to the car's return to competition.
10. No turbine driven, turbo or blowers allowed.
11. Only two valves and one spark plug per cylinder allowed.
12. No computer operated ignition systems or controlled parts, such as fuel injections fuel systems, chassis adjusting systems, etc.
13. No traction control devices of any kind.
14. No offset motors will be allowed. Engine must be directly in front of driver. Driver must straddle drive line.
15. No crank fire ignition allowed.

Wheels and Tires
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1. Maximum right rear wheel width is 18 inches, left rear wheel width 15 inches. Wheels may be either aluminum or steel.
2. No stock, wire, plastic, titanium, or carbon fiber wheels allowed.
3. May run beadlock on any wheel.
4. Right rear tire must be a Hoosier Tire 102.0/16.0-15 with VRA stamped on tire. (Unless other wise specified) Left rear Hoosier RC 1 series. Two front tires must be Hoosiers.
5. No tire softening or conditioning allowed.
6. No recaps allowed

Fuel and Coolant
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1. Methanol or Ethanol only.
2. No performance enhancing additives allowed. No nitrous oxide injection allowed.
3. No flammable liquids allowed in cooling system.
4. No glycol based coolants allowed.

Titanium Parts
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1. Titanium Parts Allowed: Titanium shock pins, torsion bar stops, king pins, spindle bolts.
2. Titanium Parts Not Allowed: Any rotating parts in engine, driveline or on wheels. (IE. Driveline, coupler, lower shaft, cranks, rods, rotors, wheel bolts, etc.
 
 

Table of Contents

VRA SPRINT CAR RULES

Safety

Body and Chassis

Shock_Absorbers

Minimum Weight Rule

Engine Rules

Intake Restrictor

Wheels and Tires

Fuel and Coolant

Titanium Parts

 

PRINT VRA SPRINT CAR RULES


Sprint Car Tech Updates and Special Announcements
 

2011 VRA Sprint Car Mufflers


Extreme Sprint Car Mufflers
6014-3530 180º Sprint Car Muffler: Case Size 14” x 7” x 5” with 3.5” inlet x 3” outlet
New for 2011
3615-3535-8 15” Long x 6” Round Muffler Shell with a 3.5” inlet x 3/5” outlet with perf-cone and built-in Turndown.
Coast Fabrication Sprint Car Muffler
350x625x17-2sVRA
Spintech Muffler
180 degree
1545P Super Stock Series
3 1/2" inlet to 3" tapered outlet side inline
B & B Performance
180 degree
FRAC-0375-S

Transponder

All sprint cars must be equipped with a VRA approved transponder by the March 12th race. Transponder mounts on the right rear diagonal of frame between the right side bumper spuds. To order transponders call (805) 649-1070.

On Way Radios

Each participant is required to have a VRA approved radio with two receiving channels.
Channel #1 Frequency 464.5500
Channel #2 Frequency 466.6875


VRA Sprint Car and
Senior Sprint Car

Chassis: Tube Framed custom built by several manufacturers
Wheelbase: Minimum: 83 inches, Maximum: 90 inches
Weight: 1500 lbs with driver at end of race
Engine: 360 cubic inch Chevrolet based V-8 engines. Cast Iron Blocks, can run aluminum heads. Fuel injected, normally aspirated. Must run ASCS gaskets on the engine Horsepower: 600+
Fuel: Methanol or Ethanol
Tires: Hoosier Racing tires on all four corners. Right Rear Hard VRA Spec Tire, Left Hoosier RC-1. Front Tires any Hoosier front tire.
Top Speed: Varies by track raced, but over 120mph
Driver Age: VRA Sprints 16+, Senior Sprints 45+