Go-Kart Racing At it's Best!

I-35 KARTWAY, LORENA, TEXAS

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2008 RULES & REGULATIONS

The track reserves the right to change any rule or regulation
to make classes equal & fair.
Les 254-666-1978 or 254-723-1628
Les@I-35kartway.com

GENERAL INFORMATION
  • All karts must register and pay yearly registration fee.
  • All karts must sign in each night.
  • All classes must draw for heat race starting position.
  • *Draw closes 6:00pm. (Miss draw, begin both heats in last.)
  • Ist heat race line-up is determined by draw.
  • 2nd heat line-up is 1st heat race finish inverted. If you have a DNF in 1st heat you will be in the rear of 2nd heat.
  • Heat race finishes are added together to determine Feature line-up. 1st heat finish breaks a tie.
  • Maximum of 12 karts per heat and 16 karts per A-Feature.
  • To receive feature points you must make 1 lap under yellow, (at least make a lap on the track.)
  • Heat races-8 laps, except Beginner, A-Feature-15 laps, except Beginner.

CLASS & AGE REQUIREMENTS

    I-35 Class is determined by age and prerequisites as of 3-01-08. If age is questionable, birth certificates will be required.
  • 3HP JR. BEGINNER - 4-6 YEARS
  • 5HP BEGINNER BOX STOCK - 6-9 YEARS
  • 5HP BOX STOCK - 7 TO 13 YEARS
  • ANIMAL CLASS - 16 AND UNDER WITH 1 YEAR EXP. AT TRACK DISCRETION.
  • MODIFIED - 18 AND UNDER WITH 2 YR EXP. AT TRACK DISCRETION
  • ADULT BOX STOCK - 16 AND UP AT TRACK DISCRETION
  • NO OPEN FLAT KARTS

One kart one class, you may not run in 2 classes, for example, box and super stock with the same kart.


  • General Admission $ 3.00
  • Pit Pass 10.00
  • Driver w/ 1 kart 20.00
  • Driver w/ 2 karts 25.00
  • Driver w/ 3 karts 30.00


    •

    *Yearly Registration Fee- $25.00 for season or $15.00 for one-race only. If you race again during season, you will be required to pay the remaining $10.00.


    A - Main Feature Finishes

    Heat winners receive 5 points, per heat.

    B-Main points start after last place in A-Main, example 12 karts in A-Main, 1st in B-Main receives 40 points.
    • We will drop 2 lowest point races, or 2 missed races, for year end ponts.
    • All drivers are considered point racers and will accumulate points in their class.
    • Drivers will earn points based on their actual feature finish and for winning heats. (exception: 2 classes conmbined)
    • Points will accumulate through the race season.
    • You must be registered for at least 15 races to qualify for year end trophy.
    • We will drop missed races, lowest score, or NL (no lap) only.
    • If you get a black flag (BF) or are disqualified (DQ) you may not drop those scores.
    • If you are disqualified or get a black flag in your feature you will forfiet your heat points for that night.

    HEAT PROCEDURES
    • *Draw closes 6:00pm. (Miss draw, begin both heats in last.)
    • 2 heats each night, 15 minute time limits on all heats, beginning when gate is closed.
    • Heat races are 8 laps, except Beginner class which has 5 lap heats.
    • 1st heat race line-up is determined by draw.
    • 2nd heat lne-up is 1st heat race finish inverted. If you have a DNF in 1st heat, you will be in the rear of 2nd heat.
    • Heat race finishes are added together to determine Feature line-up. 1st heat finish breaks a tie.
    • Parents and other kart representatives are not allowed in the infield during the racing program for all classes, except the 3HP Beginner Class (1 adult per kart).
    • Anyone crossing the racetrack during a race will disqualify his or her kart for that race.
    • STARTS-Flagman starts all races on the initial green flag, example; before 1st lap.
    • Green will be given when front row karts are keeping a reasonable pace, and front row karts are in line.
    • If all karts do not make a "clean start" to the finish line a "NO START" may be called.
    • Any kart jumping the start 2 times will be moved to the last place position.
    • 2 tries to start, then front row goes to rear.
    • NO STARTS- At the discretion of the flagman, a No-Start may be called if all karts do not cross the finish line when given a green flag on STARTS. All karts will keep their position of a No-start is called. If you have been penalized for jumping the start, you will remain in the rear.
    • RE-STARTS- After 1 complete lap only. Front row kart is responsible for slow even starts.
    • Jr. Beginner class - flagman starts all.
    • All other classes may start race in turn 3 if lights are off and caution is ended. Any kart jumping the start 2 times will go to the rear.
    • If you die in the shoot (before the gate) you have 30 sec. to start your engine, and keep position. After that time you will not be allowed to enter the track.
    • In all classes, single file restarts after 1/2 way thru.
    • RED/YELLOW - If there is a red/yellow, all karts involved, or stopped on the track at that time, will go to the rear, for multiple karts we will use last complete for order.
    • Karts not involved will keep their position based on last complete lap.
    • Any kart not running after entering the track will be allowed to start engine, if this becomes excessive, the kart will be sent to the pits. IF THIS BECOMES A PROBLEM WE WILL GO BACK TO THE DEAD ENGINE RULE USED LAST SEASON.
    • If any kart is involved in 3 red flags in the same race for any reason, the kart will be sent to the pits.
    • REPAIRS - you may not make repairs to your kart in the heats; if you break you are out.
    • Any kart loosing fuel, bumpers and/or other parts that bring out a red flag will be sent to the pits. Exception, when it's one lap to go, we will try to finish the race.
    • BLACK FLAGS - A black flag may be given anytime after a good green, including last lap. If you get a black flag in a heat you will start all other races in the rear. Must have 2 officials in agreement to give a Black Flag. If you damage another kart during caution, you will automatically be black flagged. NO EXCEPTIONS!!!
    • In any class, the first place kart completes a lap. Not all karts must pass start/finish line to complete lap. During a caution, we will go backl to previous lap completed.
    • The race procedures, with the exception of inappropriate conduct, may or may not be used in the 3HP Beginner class at the discretion of the owners of the track. This is a learning class and needs to be handled differently.
    • Do not approach started or scoring judges during a race. This could result in your kart being sent to pits or sent home without points for the night!!!

    FEATURE PROCEDURES

    • 20 Minute time limits on all features, beginning when gate is closed.
    • If the race stops for any reason after 20 minutes, race will be called. Last completed lap will be final finish.
    • Feature races are 15 laps, except Beginner class which has 10 laps.
    • Heat race finishes are added together to determine Feature line-up. 1st heat finish breaks a tie.
    • Parents and other kart representatives are not allowed in the infield during the racing program for all classes, except the 3HP Beginner Class (1 adult per kart).
    • Anyone crossing the racetrack during a race will disqualify his or her kart for that race.
    • STARTS-Flagman starts all races on the initial green flag, example; before 1st lap.
    • Green will be given when front row karts are keeping a reasonable pace, and front row karts are in line.
    • If all karts do not make a "clean start" to the finish line a "NO START" may be called.
    • Any kart jumping the start 2 times will be moved to the last place position.
    • 2 tries to start, then front row goes to rear.
    • NO STARTS- At the discretion of the flagman, a No-Start may be called if all karts do not cross the finish line when given a green flag on STARTS. All karts will keep their position of a No-start is called. If you have been penalized for jumping the start, you will remain in the rear.
    • RE-STARTS- After 1 complete lap only. Front row kart is responsible for slow even starts.
    • Jr. Beginner class - flagman starts all.
    • All other classes may start race in turn 3 if lights are off and caution is ended. Any kart jumping the start 2 times will go to the rear.
    • If you die in the shoot (before the gate) you have 30 sec. to start your engine, and keep position. After that time you will not be allowed to enter the track.
    • In all classes, single file restarts after 1/2 way thru.
    • RED/YELLOW - If there is a red/yellow, all karts involved, or stopped on the track at that time, will go to the rear, for multiple karts we will use last complete for order.
    • Karts not involved will keep their position based on last complete lap.
    • Any kart not running after entering the track will be allowed to start engine, if this becomes excessive, the kart will be sent to the pits. IF THIS BECOMES A PROBLEM WE WILL GO BACK TO THE DEAD ENGINE RULE USED LAST SEASON.
    • If any kart is involved in 3 red flags in the same race for any reason, the kart will be sent to the pits.
    • REPAIRS - you may not make repairs to your kart on the track; if you break you to to the repair area.
    • *A Mechanical repair area will be provided to work on karts, work must be in the designated area only (not on track). Karts can be pushed or carried to work area. When you are in repair area, there's no no time limit, the race will not wait.
    • After the green flag drops on restarts, karts in repair area will be allowed to re-enter the track, at the discretion of the race official or at next caution.
    • Any car loosing fuel, bumpers and/or other parts that bring out a red flag will be sent to the repair area. Exception, when it's 1 lap to go we will try to finish the race.
    • PARENTS TUNING OR ADJUSTING KART AFTER IT ENTERS TRACK, don't approach kart under caution while line-up is being done, soing so will result in your kart going to the repair area!!!
    • BLACK FLAGS - A black flag may be given anytime after a good green, including last lap. If you get a black flag in a heat you will start all other races in the rear. Must have 2 officials in agreement to give a Black Flag. If you damage another kart during caution, you will automatically be black flagged. NO EXCEPTIONS!!!
    • In any class, the first place kart completes a lap. Not all karts must pass start/finish line to complete lap. During a caution, we will go backl to previous lap completed.
    • The race procedures, with the exception of inappropriate conduct, may or may not be used in the 3HP Beginner class at the discretion of the owners of the track. This is a learning class and needs to be handled differently.
    • Do not approach started or scoring judges during a race. This could result in your kart being sent to pits or sent home without points for the night!!!

    GENERAL REQUIREMENTS

    • SPORTSMANSHIP - Unsportsman-like conduct will not be toerated.
    • Rough driving will not be tolerated. Anyone called for rough driving will be black flagged and sent to the pits. Two offenses in the same night will result in 1 week suspension.
    • Any conduct, by children patents, pit crews, etc. toward another child, parent pit crew, etc. deemed inappropriate will be barred from premises for the remainder of the season and will forfeit all points, trophies, jackets, etc.
    • Alcoholic beverages are not allowed on the premises.
    • Refusal to have kart inspected will result in loss of points for the race and a possible one (1) week suspension.
    • PROTEST - Motor protest is 60.00, awarded to track. (Non-refundable)
    • In motor protest, if legal tack will give 10.00 for gaskets.
    • Gas protest is 10.00 awarded to track. (Non-refundable)
    • Weight protest is 10.00, awarded to track. (Non-refundable)
    • Visual protest is 10.00, awarded to track. (Non-refundable)
    • All protests must be made to an official before karts enter the track for their feature.
    • All protests will be announced before that feature when the karts enter the track.
    • MOTOR CLAIMS - Only the track has the option of claiming any motor in any classes after the A-Feature is complete for claim price.
    • This rule is to keep classes competitive only.
    • Motor claim does not include: Carburetor & Intake on Briggs, breather, exhaust & clutch.
    • The track reserves the right to empty gas tank and refill with track gas at any time.
    • Track reserves the right to replace cam at any time.
    • Track reserves right to tech any kart at any time.

    The competitors may not claim any motor.


    • FRAMES - Beginner, Pure Stock, Box Stock, Adult Box Stock:
    • Any production or custom frame allowed.
    • Must be made of steel. No aluminum or titanium.
    • Champ karts, may need to add additional weight. No suspension karts.
    • FRAMES- Animal, Modified:
    • Any production or custom frame allowed.
    • Must be made of steel, no aluminum or titanium.
    • Champ karts, suspension karts ok.
    • NO OPEN FRAMES (FLAT KARTS) IN ANY CLASS!!!
    • BODY -All classes:
    • Full bodies are optional, feet must be protected w/ a nose cone or tubing.
    • Fiberglass, aluminum or steel bodies, a wing may be run on roof of cart.
    • BUMPERS AND NERF BARS - All classes:
    • Front and rear bumpers, of max. 1" O.D. tubing. May not exeed past outside of tires.
    • Nerfbars are mandatory. Max. 1" O.D. tubing, may not extend past the outside of the tires.
    • Bumpers and nerf bars must have rounded ends. No sharp edges.
    • Roll bar padding around steering column mandatory.
    • ROLL CAGE -All classes:
    • A roll cage is required. Must be welded.
    • Cage must be constructed of minimum 3/4" O.D. steel tubing. No conduit cages.
    • WHEELS - Beginner, Pure Stock, Box Stock, Adult Box Stock, Animal, Modified:
    • Any steel or cast aluminum wheels allowed, wheel spacers are allowed.
    • Aftermarket racing wheels allowed.
    • TIRES - Pure Stock, Box Stock, Adult Box Stock
    • Any size rubber tire allowed; 6 x 6.50 is max size.
    • No aftermarket racing tires are allowed.
    • Right rear bead lock is optional, you may cut tires.
    • Animal - Right side bead lock is optional, grooving is allowed, may run Burris tires.
    • Modified - Burris tires only, right side bead lock is optional.
    • FUEL - Beginner, Pure Stock, Box Stock, Adult Box Stock, Animal - Gasoline only (104 Octane). No methanol.
    • FUEL -Modified - methanol only.
    • WEIGHT:
    • Jr. Beginner -265 lbs.
    • Beginner Box Stock - 275 lbs.
    • Box Stock - 290 lbs.
    • Animal - 315 lbs.
    • Modified - 340 lbs.
    • Adult Box Stock - 360 lbs.


      • In all classes, any modifications other than noted in this rulebook are grounds for disqualification!!!

    SAFETY REQUIREMENTS

    • KARTS - All Classes, Not Optional:
    • All karts must have safety harness sucurely attached to the frame. 5 point harness recommended.
    • All karts must have a kill switch inside the kart within drivers' reach.
    • All karts must have a kill switch mounted on the outside of frame in the rear.
    • All wights must be securely mounted to the frame with your kart number on the weight.
    • DRIVERS - All classes, Not Optional:
    • All drivers must wear approved full face safety helmet with complete eye protection.
    • All drivers must wear full length protective clothing (long sleeves & long pants). Driving suits are recommended.
    • All drivers must wear neck brace, and arm restraints attached to the drivers safety harness, not steering column.
    • Helmet restraints are recommended, but not required for all classes.
    • MODIFIED:
    • A (5) point safety harness is required.
    • Helmet restraints attached to the helmet and slipped under the arms or a head rest on the right side of the seat, required.
    • Fire Suit is required.


      • No driving in pits. Karts must be pushed in pits.

      No motorbikes, motor scooters or 4 wheelers in pits. 4 wheelers may only be used by officials of for starting karts.

    **NUMBER REQUIREMENTS**

    • ALL KARTS, ALL CLASSES - NOT OPTIONAL:
    • Karts must have legible numbers on at least 6" in height.
    • Numbers must be mounted on both sides of the kart behind drivers head.
    • Must be on the front nose cone of the kart, at least 6" in height.
    • Number must be in a color that contrasts to plate or nose cone, example white on black. Please no metallic colors.
    • All kart numbers must be registered with the track.
    • Decorative numbers painted on the side panels do not meet track requirements, they are difficult to see.
    • You must have mounted numbers in addition to any number painted on lower side panels.
    • All numbers must be approved by track.

    3HP BEGINNER LIVE AXLE CLASS- 4 TO 6 YRS

    1. Drive train

        a. Must be live axle only.
        b. Must be chain or belt driven.
        c. Chain guard must be in place between chain and driver.
        d. Aluminum axles allowed.


    2. Brakes

        a. Must have minimum one (1) wheel brakes in the rear.
        b. Brakes must be in good working order.


    3. Engine

      A. Block

        1. No motorsport engines allowed.
        2. Engine must meet specifications for make and model.
        3. Motor claim applies to track only.


      B. Carburetion

        1. Stock carburetors for specified motor only.
        2. Must have track approved muffler.


      C. Engine Sizes

        1. Only 3 or 3.5 hp Briggs motor.
        2. May remove governor, choke, change air filter.
        3. Keyway must be in stock position.
        4. Flywheel must be stock

      D. Clutch

        1. Any shoe clutch.
        2. No disk or wet clutches.
        3. No dragon skin clutches.


      E. Fuel

        1. Gasoline only


      F. Tires

        1. Any size rubber tire allowed.

        2. May run any Burris slicks or lawnmower tires only.

        3. You may cut tires.


      G. Weight

      1. 265 lbs

    The race procedures, with the exception on inappropriate conduct, may or may not be used in the 3HP Class at the discretion on the track owners. This is a learning class for young drivers and will be handled differently.
    Beginners will start all races from a stop until last 4 races when they have more experience.
    No black flags in this class, if you spin a car you will go to the rear.

    5HP BEGINNER BOX STOCK - 6 to 9 years

    1. Drive train
      a. Must be live axle kart.
      b. Must be chain or belt driven.
      c. Chain guard must be in place between chain and driver.
      d. Any axle allowed.


    2. Brakes
      a. Must have minimum one (1) wheel brakes in the rear.
      b. Brakes must be in good working order.


    3. Engine
      A. Block
        1. Intec motors only, 206cc.Dual bearing block OK.
        2. These motors are bought at The Motor Shop in Waco, or TSC.
        3. This is the only motor allowed in this class.
        4. These motors must be stock; any modifications made to these motors other than those listed will result in disqualification.
        5. You may pull out governor.
        6. Must leave choke in place.
        7. May use steel sleeve.
        8. Plastic cam only.
        9. Stock flywheel that comes with moter used.
        10. Must use Briggs piston; can be oversized to .030" max.


      B. Carburetion

        1. The carburetor size; 30 ONLY.
        2. Plastic gasket may not be drilled.
        3. May use aftermarket header and air filter.
        4. Must use track approved muffler.


      C. Engine Sizes

        1. 206cc only.
        2. Lift, must meet manufacturer specks or you will be disqualified. We will check.
        3. Keyway must be in stock position.
        4. Flywheel must be steel.
        5. May cut oil dipper.


      D. Head

        1. Must run the standard EPA head, you may not remove the D-port mark.
        2. No Animal heads
        3. Must run stock valve; only.
        4. Must run stock valve spring, stock keepers only.


      E. Clutch

        1. Any shoe clutch
        2. No wet or disc clutches


      F. Tires

        1. Lawn mower or Burris tires only.
        2. You may cut the tires.
        3. May not use bead lock rims.


      G. Weight requirement

        1. Minimum weight - 275 lbs

    5HP BOX STOCK - 7-13 years

    1. Drive train
      1) Must be live axle kart.
      2) Must be chain or belt driven.
      3) Chain guard must be in place between chain and driver.
      4) Any axle allowed.
    2. Brakes
      1) Must have minimum one (1) wheel brakes in the rear.
      2) Brakes must be in good working order.

    3.Powertrain
      A. Block
        1. Stock Briggs & Stratton "Intek", 206cc engine only, dual bearing block OK.
        2. No exceptions
        3. Engine must meet specifications for make and model

      B. Carburetion
        1. 32, 34 or 36 carburetors ONLY.
        2. No modifications allowed to carburetor
        3. Stock plastic intake that comes with motor only- no drilling.
        4. Must have track approved muffler.

      C. Engine
        1. You may remove governor, aftermarket air filter allowed.
        2. Flywheel key must be in stock position-no advance timing.
        3. Flywheel must be stock for make and model.
        4. Stock connecting rods only- stock stroke- no billet rods
        5. Crankshaft must be stock- no modifications
        6. Must use Briggs piston; can be oversized to .030" max.
        7. Stock plastic cams only- NO MODIFICATIONS are allowed to camshaft other than compression release removal
          a) SKRA and individual tracks reserve the right to trade camshafts with you at any time. If you refuse to forfeit your cam, you will be disqualified.
        8. Must have top of engine block covered.
          a) May use original fuel tank mounting bracket, or custom made cover
          b) Minimum cover thickness is 1.25"
        9. Must have flywheel cover attached to blower housing

      C.2 - Cylinder head / valve train
        1. No modifications to cylinder head- no porting or polishing- cylinder heads must have D-port- EPA heads only- no Mexico heads
        2. Must run stock "Intek" valves, keepers, rocker arms, push rods, and lifters.
        3. Stock Briggs & Stratton "Animal" springs, or stock Briggs & Stratton "Intek" springs allowed, only

      D. Fuel- gasoline only
        1. maximum octane rating:104
        2. fuel pumps not allowed

      E. Clutch

        1. any centrifugal shoe clutch allowed- no wet clutch
        2. no disc clutches

      F. TIRES
        1. Turf tires (lawnmower) allowed
        2. 5" to 6" wheels only
        3. Tire grooving allowed
        4. Racing tires allowed- Burris tires only.

      G. Weight requirement
        1. Minimum weight - 290 lbs.

      H. Driver requirement

        1. Driver may not exceed thirteen (13) years of age, SKRA as of January 1st of the current racing season

    I-35 ANIMAL CLASS- 16 and under

    1. Drive train
      a. Must be live axle only.
      b. Must be chain or belt driven.
      c. Chain guard must be in place between chain and driver.
      d. Aluminum axles allowed.

    2. Brakes
      a. Must have minimum one (1) wheel brakes in the rear.
      b. Brakes must be in good working order.

    3. Powertrain
      A. Block
        1. BRIGGS & STRATTON "ANIMAL" ENGINE ONLY
        2. NO EXCEPTIONS
        3. Engine must meet specifications for make and model.

      B. Carburetion

        1. Carburetors must be stock "Animal" PZ carburetor that comes with animal motor used ONLY.
        2. No air filter adapters or velocity stacks allowed - filter must clamp directly to carburetor
        3. Must have stock "Animal" intake - no modifications
        4. Hole for pulse fitting may be drilled
        5. Bolt holes on both sides of intake may be slotted for proper alignment
        6. Mufflers are required at certain tracks due to city ordinances beyond their control.
        7. Must have track approved muffler.

      C. Engine

        1. Advanced timing allowed
        2. Flywheel must be stock "Animal" billets flywheel
        3. No aftermarket flywheels allowed
        4. No machining, or modification in any way allowed
        5. Gen 5 Animal flywheel allowed
        6. Stock "Animal" connecting rods only - stock stroke.
        7. Stock "Animal" pistons only
        8. Briggs & Stratton oversized piston allowed, .030" max
        9. Camshaft must be stock metal cam that comes in the motor - NO MODIFICATIONS are allowed to the camshaft other than compression release removal
          a. SKRA and individual tracks reserve the right to trade camshafts with you at any time. If you refuse to forfeit your cam, you will be disqualified.
          10. Briggs & Stratton "Animal" blower housing required-must have flywheel cover

      C.2 - Cylinder head / Valve train
        1. NO MODIFICATIONS to cylinder head- no porting, polishing, or milling allowed. (Cylinder can be milled to bring piston level to deck surface. Be cautious, if you mill too much and the piston is above the deck at any point, it will not be legal.)
        2. Must run stock "Animal" valves, springs, keepers, rocker arms, push rods, and lifters
        3. Shimming of valve springs allowed
        4. Intake valve guide repositioning allowed
        5. Billet valve covers allowed

      D. Fuel- gasoline only
        1. Maximum octane rating: 104
        2. Fuel pumps allowed

      E. Clutch
        1. Any centrifugal or disc clutch allowed.
        2. Needle bearing clutches allowed.

      F. Tires
        1. Turf tires (lawnmower tires) allowed
        2. Racing tires allowed- Burris only.
        3. Right side bead lock wheels allowed
        4. 5" of 6" wheels only
        5. Tire grooving allowed

      G. Weight requirement
        1. Minimum weight - 315 lbs
      H. Driver requirement
        1. Driver may not exceed sixteen (16) years of age, SKRA as of January 1st of the current racing season year
        2. Driver must have at least 1 complete season of experience in a stock live-axle class.

    5HP ADULT BOX STOCK - 16 & up

    A. Drive train<
      a. Must be live axle kart.
      b. Must be chain or belt driven.
      c. Chain guard must be in place between chain and driver.
      d. Any axle allowed.

    B. Brakes
      a. Must have minimum one (1) wheel brakes, in the rear. b.. Brakes must be in good working order.

    C. Engine
      A. Block
        1. Intec motors only, 206cc. Dual bearing block OK.
        2. These motors are bought at The Motor Shop in Waco, or TSC.
        3. This is the only motor allowed in this class.
        4. These motors must be stock; any modifications made to these motors other than those listed will result in disqualification.
        5. You may pull out governor and air filter and keyway.
        6. You may use a 10 over ring, no 10 over piston. May use steel sleeve.
        7. Arrow on piston must point towards the flywheel.
        8. CAM MAY NOT GO ABOVE 275.
        9. You may use extra gaskets on side cover for clearance, any oil dipper is allowed.

      B. Carburetion
        1. The carburetor sold with the engine, 30's, 32's or 36's ONLY.
        2. Plastic gasket may be drilled to 0.750.
        3. Must have track approved muffler.

      C. Engine Sizes
        1. 206cc only.
        2. Lift, must NOT GO ABOVE 275
        3. Keyway may be adjustable flywheel must be stock

      D. Clutch
        1. Any clutch except wet.


      E. Head
        1. May run the EPA Mexico head.
        2. If using standard EPA head you may remove the D-port mark, must still meet specs.
        3. Animal heads allowed
        4. May run any valve as long as stock size for this engine.
        5. May run any valve spring, stock keepers only.

      F. TIRES
        1. Lawn mower tires only, you may cut them, Burris tires are mower tires
        2. May use bead lock on right rear tire, only.




    I-35 MODIFIED CLASS

    1. Drive train
      a. Must be live axle kart.
      b. Must be chain or belt driven.
      c. Chain guard must be in place between chain and driver.
      d. Aluminum axles are allowed.

    2. Brakes
      a. Must have minimum two (2) wheel brakes.
      b. Brakes must be in good working order.
    3. Powertrain
      A. Block
        1. Briggs & Stratton "Animal" or "Intek" block only - NO EXCEPTIONS
        2. May add additional material for strength
      B. Carburetion
        1. Any methanol carburetor allowed
        2. Any intake allowed.
        3. Must have track approved muffler.
      C. Engine
        1. Advanced timing allowed
        2. Any ignition allowed - exception: No battery sourced ignitions allowed
        3. Any billet flywheel allowed
        4. No cast flywheels allowed
        5. Any connecting rod allowed
        6. Any piston allowed
        7. Stock 206cc "Animal" or "Intek" crankshaft only - stock stroke - no modifications
        8. No aftermarket crankshafts allowed
        9. Any camshaft allowed, .308 max lift at push rod
        10. Billet side covers allowed
        11. Heavy blower housing required - must have flywheel cover
        12. Block may be decked
        13. Must have top of engine block covered
        14. May use original fuel tank mounting bracket, or custom made cover
        15. Minimum cover thickness is .125"
      C.2 - Cylinder head / valve train
        1. "Animal", "World Formula", or "Intek" cylinder heads only
        2. No aftermarket cylinder heads allowed
        3. Porting, polishing, and milling allowed
        4. Aftermarket springs and retainers allowed
        5. Any stock diameter valves allowed
        6. Stainless valves OK
        7. Any rockers allowed
        8. Any lifters allowed
        9. Billet valve covers allowed
      D. Fuel- methanol only
        1. fuel pumps allowed
      E. Clutch
        1. Any centrifugal or disc clutch allowed - no wet clutch
        2. Needle bearing clutches allowed
      F. Tires
        1. Turf tires (lawnmower tires) allowed
        2. Racing tires allowed - Burris only
        3. Bead lock wheels allowed
        4. 5" or 6" wheels only
        5. Tire grooving allowed
      G. Weight Requirement
        1. Minimum weight- 340 lbs
      H. Driver requirement
        1. Driver may not exceed eighteen (18) years of age, as of January 1st of the current racing season year.
        2. Driver must have at least one (1) complete season of experience in a stock Animal class,
        OR two (2) complete seasons of experience in any other live axle class (5HP or more).

    LAWNMOWER CLASS

      1. Must wear DOT approved full-face helmet.
      2. Must wear gloves.
      3. Must wear long sleeve jacket.
      4. Must wear long pants, not shorts.
      5. All mowers are to have tether or seat kill switches.
      6. Mower must have brake working on at least one wheel.
      7. All mowers must be a lawnmower motor with no more than a 27 HR rated engine.
      8. The frame has to be a lawnmower frame. It can be changed to improve brakes or steering. It must still be approved by tech official before racing.
      9. All mowers must pass tech inspection before racing.
      10. All mowers must have an automatic throttle closing device.
      11. All front wheels must be drilled with carter keys installed.
      12. All mowers must have stock mufflers or pipes run out the back. (I-35 requires mufflers on ALL mowers.)
      13. Must have at least 6? in height numbers on hood and rear of mower in contrasting colors to mower color. (If no numbers, we will not score mower).

    IF ANYONE HAS ANY QUESTIONS ABOUT THE MOWER, CALL JAMES MULLINS - CELL # 512-845-9798.



    Additional Safety Requirements

    1. Driver must wear helmet restraints, or have right side headrest attached to kart.
    2. Fire-resistant racing suit required.

    Refer to "General Kart Rules" for all other rules not listed above.
    The track reserves the right to change any rule or regulation to make classes equal & fair



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