Competition Guidelines

January 2010

Southwest Modlite Association shall hereafter be referred to as SWMLA throughout the rules and descriptions. 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 directors 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 at to the discretion of the SWMLA officials; A SWMLA decision is final.


1. SWMLA race rules shall apply to all SWMLA sanctioned events. All SWMLA vehicles are subject to inspection at any time.

2. Approval of an SWMLA vehicle by the inspector shall mean only that the vehicle is approved for participation in a competitive event and shall not be construed in any way to mean that the inspected SWMLA vehicle is guaranteed mechanically sound. Be it further declared that the inspector shall not be liable, nor shall the sanctioning body, for any mechanical failure not for any losses, injuries, or death resulting from same.

Governing Body

A three-member Competition Committee, (CC) governs the SWMLA. The three-member Competition Committee will consist of two appointed members and one member voted to the Competition Committee by the general membership. The eligible elected member of the CC must have been a member of SWMLA the previous year, participated in 50% of the races in the previous year, and plan on participating in 50% of the races in the current year. Each CC Member will have one vote on CC actions. Appointed members are done so by the CC. Term limits are indefinite for both appointed and the elected member of the CC. The CC will consist of three members.

Tony Martin is the appointed member of the Competition Committee.

Mike Martin and Matt Gann are the elected members of the CC.

All actions and or changes to the Competition Guidelines shall be done by the CC. All voting shall be conducted at a General Membership Meeting. A majority decision by the Competition Committee will carry the decision (2-1). All voting will occur once per year at a General Membership Meeting within forty five days of the conclusion of the race season. An emergency vote may be conducted within thirty days of notification by mail to all current membership of the need for an emergency vote.

The CC may vote by a majority to send the vote to the General Membership.

Members shall have one vote per attended race with a maximum of ten at the time of a vote in that racing season. A Member shall have a current paid membership and be in good standing with the SWMLA to have voting privilege. Non Driver Members shall have one vote.


1) SWMLA driver memberships will be in force from January 1 until December 31 of year of issue. Membership is $80, and non-driver membership is $25. There will be no grace races. Single day memberships are available for $10 per race night. The fee will be waived if the race is a non point event. Cars must have no performance or safety infractions.

2) Each driver must sign in with Pit Steward at least 45 minutes before the first race or the driver will start at the back of their assigned heat. No driver may compete in any car other than the one they originally signed in with the Pit Steward. Any driver who competes in a car that he is not eligible to drive shall be disqualified.

3) Any driver who wins 3 main events, will have his ecu swapped for another ecu provided by SWMLA. The new ecu will be sealed through the wiring on the plug.

4) Any SWMLA official or member may check any rule at any time; prior tech examination does not imply acceptance of rules infractions.

4) The SWMLA CC or the SWMLA Tech Officials will not be responsible to officiate a SWMLA race. Track officials will rule on the finishing order, yellow flag enforcement, and Texas starting. Track decisions are final.

Driver Conduct:

All Drivers must agree to, and sign, the acceptance of the Conduct Agreement on the SWMLA Driver Application prior to competing in a SWMLA event.


1) Points will be awarded for main event only. Any driver not qualifying / starting the main event but drew a pill with a legal, operating car will receive 50 points. When a cancelation of a race by the race promoters occurs, the drivers who drew a pill with a legal operating car will receive 50 points.


1 – 120

11 – 98

21 – 78

2 – 116

12 – 96

22 – 76

3 – 114

13 – 94

23 – 74

4 – 112

14 – 92

24 – 72

5 – 110

15 – 90

N / Q – 50

6 – 108

16 – 88


7 – 106

17 – 86


8 – 104

18 – 84


9 – 102

19 – 82


10 –100

20 – 80

1) A pill draw from point standings will determine participants in the trophy dash or top four in points. A driver may win one trophy dash in each half of the season.


1) $1000.00 cash, check, or money order from the Southwest Modlite Association general fund only for Association Engine Purchase (AEP).

2) Any member can initiate the AEP by filling out the AEP form available from the Pit Steward.

3) Signature requirements are as follows; if the AEP involves a CC member then two CC members must sign the form. If the AEP is for any other member then one CC members must sign the form. Five members also must sign the AEP form for a total of 6 or 7 signatures for the form to be valid and the AEP process to begin.

Owner’s options:

1) Sell the engine to the Association for $1000; engine to be auctioned on EBay with no reserve. The engine serial number will be logged so that the engine is no longer allowed in SWMLA competition.

2) Agree to remove the engine from SWMLA competition with engine serial number no longer allowed.

3) Agree to have the engine removed and inspected by an independent motorcycle mechanic for performance enhancements. If found in compliance then returned to the owner with the balance of the $1000 paid to the owner. If found to be not in compliance then sold at auction with no reserve and owner to receive no more than $500.

4) AEP does not include: carburetors or FI, carburetor or FI intake boots, alternator or alternator block off plate, headers, coils, ignition box, oil lines, fittings, coolers, radiator, oil pressure or temperature gauges or sending units, starter, drive shaft adaptor. Long block only.


1) Rookie of the Year shall be determined by the rookie with the most points at the end of the season. A rookie shall be anyone who has competed in no more than 4 SWMLA points races from the previous year, or can race as many races after September 1 of the previous year, and has no prior experience in a circle track race car (four races or less, ¼ midgets or less are not included).

2) The top twenty in points will receive money from the season long drivers point fund based on the earned points for the year. The SWMLA general fund will be paid out leaving no more than $1000-$1200 balance for the next year.


Modified appearing body style such as IMCA or DIRT modified. These are to be known as Modified Lite body styles.



The intent of these preceding specifications is to follow the bodyline and design of an IMCA or DIRT modified racecar.


A. 42" min 50" max from ground – total car height.
B. 124" maximum total length, bumper to bumper.

1. 84" max – Door and rear quarter length.

D. 30" min 38" max – side height of rear quarter panel from the ground. 30” max height of quarter panel.


1. 1. 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.


1. 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.


1. 20" min 38" max rear upper side panel may contain plexiglass. 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.

1. 18" min side opening length. 10" minimum side opening height front and rear.

1. 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.


1. 36" min 56" max – length of right side pod area with max 30o. Left side pod may be altered for driver access.

2. Rear quarter distance from center of rear 20" min 30" max.

3. 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.

4. 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.

5. Side pod may not extend rearward past the centerline of rear axle.

6. Body must be centered on chassis.

7. If windshield is used, it must be flat.

8. All dimensions will be teched to + or – ½” unless otherwise specified.


(a) All cars will weigh minimum 1240# with driver, after race. Empty car weight minimum 950#. (No ballast, no fuel)

(b) No weight outside of car body, i.e. on nerf bars.


(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 .125


(a) Firewall must be metal and must completely separate engine compartment from cockpit. Engine protruding into cockpit must be enclosed.


(a) Windshield must be wire mesh or protection bars for dirt. Lexan highly recommended when running asphalt. No Glass. All other cockpit areas must remain open. Deflectors may be used in front of driver. May be no wider than roll bar area.


(a) Full length nerf bars between front and rear tires mandatory. Maximum outside diameter of 1.25” and .125 maximum thicknesses. Must be hollow. May not extend out beyond tread width more than 1" at the rear only.


(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.


(a) Car number must be minimum 12" in height and 2" stroke. Numbers must be displayed on each side and roof. Numbers in 4" size should be on front and rear of car to help with line-ups. Car numbers 1 through 999 with no duplication within the SWMLA.


(a) Steel wheels only, minimum wall thickness .090", 13" only. Wheel width maximum of 8". All wheels must be the same width.

(b) Hoosier Racing Tire, 205/60D/13, Medium only; or Goodyear D2520 G50 only. Four Goodyear or four Hoosiers only. Car shall start and finish each race with the same brand of tire. Tires must durometer 50 minimum cold, 45 post race. SWMLA durometer is official. Only competitors racing on the Hoosier tire will be awarded points.

(c) Bead lock rims not allowed.

(d) No tire softeners / conditioners.

(e) Grooving and sipping is allowed


(a) 2010 Engine rules-3 years old or older,Yamaha,Honda,Kawasaki, and Suzuki are allowed.
(b) Fuel injected engines maximum 1000cc, no modifications from stock design.Upper butterflies may be removed. After market ignition is not allowed. TFI is allowed.

(c) Carbureted down draft engines: 1130cc Maximum, stock bore, stroke, and head configuration. Aftermarket carburetors and ignition allowed.

(d) Side draft engines: 1200cc Maximum, stock bore, stroke. No modifications from stock design. Aftermarket carburetors and ignition allowed.

(e) No aftermarket / non production for year and model camshafts.

(f) Four cycle, four cylinders maximum only. Must have working transmission, clutch, and starter, with all parts in place. Complete Clutch assembly must remain in engine. External reverse boxes allowed. No air controlled shifting devices.

(g) Charging system must be in working order. Battery powered ignition system only.

(h) No auxiliary starters.
(i) Engines must be front mounted in engine compartment.

(j) Engine setback: The "square of the engine" (rear fins of the jugs) 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.

(k) OEM fuel injection must remain stock.

(l) Engine must be cooled by original intent. May use extra fan or oil cooler.

(m) Fuel delivery must be by original intent. Carburetor/Fuel injection boot must fasten directly to head in the stock intake port location.

(n) No porting, grinding, polishing, or changing stock configuration of intake or exhaust ports allowed. Casting part lines must be visible upon inspection. Carburetor/Fuel injection boot must fasten directly to head in the stock intake port location

(o) Header must attach directly to head in stock exhaust port location

(p) Oiling system may not include a dry sump system.

(q) No increasing or decreasing of motor stock stroke in any way.

(r) Engine exhaust must include muffler and exit rearward. Muffler must be a minimum of 95 decibels at 25 feet or meet local track regulations

(s) Carburetors or Fuel Injection and all 4 spark plugs must be removed before checking CC.

(t) All engines shall be inspected and a valve cover bolt sealed with approved SWMLA seal prior to competition in a SWMLA event.
(u) Grace races for unsealed engines. (A) 1 Grace race for any driver or engine that has not participated in any SWMLA event. That driver will not receive any money or points until he purchases a voucher from SWMLA and gets his engine sealed within 7 days. Once approved he will receive his money and points for his grace race @ the next event.(B) For drivers or engines that have participated in a SWMLA event previously, they will receive no money or points and will have to purchase a voucher from SWMLA, and have 7 days to complete in getting the seal. Once approved they will receive their money but NO points for that grace race @ the next event. Seal and Non-seal vouchers can be purchased for $30.00.(C) If a driver shows up a second time with no seal, he will not be allowed to race.

2010 Engine Rule:

§ Any 1000cc engine manufactured by Honda, Kawasaki, Yamaha, or Suzuki, that had more than 500 produced in the model year, and is three years old or older.

§ Stock configuration with OEM stock parts only, 4 cycle, four cylinders maximum.

§ No balancing, polishing or modifications allowed to any internal engine parts.

§ No porting or polishing of heads in any way.

§ Stock OEM parts and specifications for electronics and injection systems.

§ Carbureted engines – Factory displacement of 1100cc or less, stock OEM rules apply.


(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.

(c) Gasoline only, 91 Octane or less, no fuel additives allowed; SWMLA fuel tester is official.

(d) Reinforced or steel braided line must be used in all high-pressure areas.

(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.


(a) Must use steel drive shaft from transmission to automotive rear end. Minimum 2.50" x .083" or 2" x .120".

(b) Quick change rear ends are allowed; gear set to be Toyota equivalent. No gear changes after arriving at the race track. Gear may be replaced due to failure after approval of Tech official. No titanium axles.

(c) Drive shaft tunnel must have minimum of 2 (3 recommended) 360-degree hoops between firewall and seat back. Must be fabricated of minimum .1875" X 1.5" steel bar. 1" X .095" steel tube highly recommended.

(d) Rear must be locked or have a solid spool.


(a) Main frame 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) Main frames 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" (.095 recommended) in all cars manufactured from 12/98 on. Clubs may grandfather older cars with 1" x .065" tubing. Cross-brace or diagonal strongly recommended in hoop over driver's head.

(d) All cars must have cage bars installed across door openings on both sides. Bars should be welded in place as part of roll cage. Minimum size 1" x .065". (1.25" x .095" recommended) cars with bars mounted on doors should have full doorframe and minimum of 2 horizontal cross bars. 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. Steel plate on driver's door bars recommended

(f) It is recommended that, if using rivets, body panels attach to tabs welded onto cage instead of drilling multiple holes into cage bars.

(g) No down tube frame cars allowed. Any bars going from cowl area to snout must remain below the upper line of hood.


(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 panhard 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.


(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.


(a) All four wheels must have working calipers and rotors.

(b) Rotors and calipers:

1. Steel rotors mandatory, .250 minimum thickness.

2. Steel OEM calipers or aluminum calipers.

3. Cutting & scalloping of rotors will be allowed with no rotor surface being less than 3/4” in width.

4. Drilling of rotors is permitted.

(c) Adjustable brake bias and shut off allowed.

(d) Competition-type master cylinders allowed.


(a) Fire extinguisher shall be within reach of driver inside of the car.

(b) Driver uniform will consist of:

1. Fire suit (single layer minimum, one, or two-piece).

2. Fireproof gloves.

3. Fireproof shoes.

4. Approved helmet with Snell 95 or higher.

5. Full-face helmet.

6. Head and neck restraint systems recommended.

(c) Car must be equipped with 5-point safety harness, no more than 3 years old, with minimum of 3-inch belts.

(d) Aluminum, high-backed racing seat mandatory.

(e) Window nets, arm restraints, and head & neck restraints HIGHLY recommended.

19. NO two-way radios. One-way communication from officials only is allowed.

20. NO mirrors allowed.


(a) All drivers must be minimum of fourteen (14) years of age. All drivers under 16 years of age MUST have a signed waiver by parent or guardian.


(a) The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish the 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 accepted and compiled with these rules. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATION OF OR COMPLIANCE WITH THESE RULES AND REGULATIONS. They are intended solely 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. Any interpretation or deviation of these rules is left to the discretion of SWMLA and the decision is final. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH DEVIATION OF SPECIFICA-TIONS.

(b) No intoxicating spirits or controlled substances are to be consumed before or during race events by anyone entering the pit area of tracks.

(c) SWMLA reserves the right to reject or allow entry of any driver or car.

(d) Abuse or confrontation of any racetrack or SWMLA official and/or use of abusive language is strictly prohibited. FAILURE TO ABIDE BY THIS RULE MAY RESULT IN SUSPENSION, LOSS OF POINTS, WINNINGS, RECORDS, AND/OR CASH FINE.
(e) Any disputes involving qualifying times, lap scoring, finishing position is under the jurisdiction of the hosting track officials. SWMLA Officials will address winnings, points, or rules interpretations. Any disputes or discussions of this nature are to be held with SWMLA Officials only.


(g) Drivers, owners, and/or crew shall have no claims or actions of any kind against or cause of action for damages of any kind, expenses, or otherwise against SWMLA , any track owner, promoter, or official by reason of disqualification or damage to either car, driver, or both. This regulation shall be deemed a covenant not to sue made by each driver, owner, and/or crewmember to SWMLA, any track owner, promoter, or official with respect to any alleged act or omission or agreement by any of them.

(h) SWMLA or track officials at any time for safety, mechanical, or rules compliance may inspect any car.


( j) Punishments, for unsportsmanlike conduct, rough driving, will be listed in all "Competition Guidelines" rules booklets handed out at the beginning of each season to SWMLA members.


(j) Effective date of these rules January 1, 2010.