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Class 10

CLASS 10
Unlimited Open Wheel-Limited Engine

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DEFINITION
Unlimited 4 wheel single and two seat vehicles with an limited engine.
No production bodied vehicles allowed in this class.

GENERAL REGULATIONS
Entrants in this class shall comply with all applicable general regulations.

TECHNICAL REGULATIONS
This class is an open class and all components will be considered open unless restricted herein.

NOTE: The TR abbreviations listed under this class (I.E. TR1 HELMETS) refer to TR cross reference listings in the front of this book. These TR cross-referenced listings are part of the class rules. Where a conflict occurs between the TR cross-referenced listing and a rule contained under this class, the rule contained under this class takes priority.  Click here to view the TR cross-referenced listing.  

SAFETY EQUIPMENT

TR1 HELMETS
TR2 PROTECTIVE CLOTHING
TR3 EYE PROTECTION and DENTURES
TR4 HEAD AND NECK RESTRAINTS
TR5 FIRST AID KIT
TR6 EMERGENCY SIGNALING DEVICES
TR7 HORNS
TR8 REFLECTORS
TR9 FIRE SUPPRESSION EQUIPMENT
TR10 SURVIVAL SUPPLIES

SUSPENSION COMPONENTS

TR11 SHOCK ABSORBERS and BUMP STOPS
TR12 SECONDARY SUSPENSION
TR13 WHEELS and TIRES
TR14 FASTENERS
STEERING and BRAKE COMPONENTS
TR15 STEERING
TR16 BRAKES

ELECTRICAL SYSTEM

TR17 IGNITION
TR18 BATTERIES
TR19 LIGHTS
TR20 STARTERS

FUEL SYSTEM

TR21 FUEL
TR22 FUEL TANKS
TR23 FUEL FILLERS LINES, VENTS, and CAPS
Fuel cell mandatory.

ENGINE, TRANSMISSION and DRIVELINES

TR24 ENGINE and ENGINE DISPLACEMENT
Any engine may be used providing:

  1.  It is a design that has been series produced in quantities of 5,000 units or more and is readily available to the general public in the U.S.A.
  2. It did not displace more than 2400cc in the stock form.
  3. It retains a maximum of four (4) valves per cylinder. Has no more than four (4) cylinders.
  4. Single seat vehicles must not displace more than:
    a. 1800cc water-cooled eight valve with a single two-barrel carburetor.
    b. 1750cc water-cooled sixteen valve with a single two-barrel carburetor or stock fuel injection.  Max throttle body size 58.5mm.
    c. 2200cc four cylinder, push rod, air cooled with one (1) or two (2) carburetors, or stock fuel injection.
    d. Stock production GM Eco-Tech engine. 2.2L or 2.4L. Engine must be sealed by an approved M400 engine builder.
    e. Ford 2.0L 14-DI-TIVCT engine. Engine must be sealed by an approved M400 engine builder.
  5. Two seat vehicles must not displace more than:
    a. 1900cc water-cooled eight valve with a single two-barrel carburetor.
    b. 1850 water-cooled sixteen valve with a single two-barrel carburetor or stock fuel injection. Max throttle body size 58.5mm.
    c. 2400cc four cylinder, push rod, air cooled with one (1) or two (2) carburetors, or stock fuel injection.
    d. Stock production GM Eco-Tech engine. 2.2L or 2.4L. Engine must be sealed by an approved M400 engine builder.
    e. Ford 2.0L 14-DI-TIVCT engine. Engine must be sealed by an approved M400 engine builder.
  6. It is not a rotary-piston engine.

Single and two seat vehicles may use one carburetor providing:
1. It retains a maximum of two (2) ventures per carburetor.
2. Maximum allowable venturi size is 42mm.
3. Carburetor(s) must be of the production automotive type.
4. Four cylinder, push rod, air cooled motors may use two (2) carburetors.

Fuel injection is stock with the following restrictions:

  1. Intake manifold must remain as delivered by the manufacture. It will retain it’s stock shape, size, and configuration. No porting or other modifications. Ports may be matched to heads, but matching may not exceed .250 inches (1/4 inch) deep. Manifold must be the unit that was installed and delivered on the engine by the original manufacture. Only U.S.A. delivery fuel injection is allowed. Manifold must be installed and sold on production vehicles that are sold for highway use in the U.S.A. and be readily available to the general public.
  2. Throttle body must be production (OEM) type readily available to the general public in the U.S.A.

If M400 at anytime during the racing season determines that any particular brand or make of engine has an advantage, we may equalize that engine either by a reduction in cc’s or the use of a restrictor. These changes may be required during the racing season.

TR25 ENGINE REPLACEMENT
TR26 TRANSMISSION
TR27 THROTTLES
TR28 EXHAUST
TR29 DRIVE SHAFTS
TR30 FLYWHEEL SHIELDS
TR31 FLUID COOLERS
TR32 AUXILIARY EQUIPMENT
TR33 SUPERCHARGERS and TURBOCHARGERS

VEHICLE SAFETY EQUIPMENT

TR34 ROLL CAGES
TR35 SAFETY HARNESS
TR36 SAFETY NETS
TR37 SEATING

GENERAL VEHICLE COMPONENTS

TR38 DRIVERS COMPARTMENT
TR39 DOORS AND LATCHES
TR40 FIREWALLS
TR41 BALLAST
TR42 WEIGHT
TR43 FLOORBOARDS
TR44 BUMPERS and HAZARDOUS PROTRUSIONS
TR45 MIRRORS
TR46 SKID PLATES
TR47 STORAGE
TR48 CHASSIS and BODY
No production bodied vehicles allowed in this class.

TR49 HOSES
TR50 IDENTIFICATION MARKINGS
M400 will assign race numbers.

TR51 ADVERTISING on VEHICLES
TR52 RADIO EQUIPMENT
TR53 WORKMANSHIP
TR54 TRACKING DEVICE