6.0 Carburetor / Air Induction / Fuel Systems
 
  • 6.1 Carburetor   Requirements

     

    • WTC has gauges for the following carburetors:
      (To add or approve any carburetor the team must purchase and donate the appropriate guages requested by WTC)
      • Holly 4412 500 cfm 2bbl
      • Holly 0-6895 390 cfm
      • HP 0-80507  390 cfm 
         
    • Engines Option 1
      • 325 cu. inches and under.
      • Any 4 bbl or 2 bbl Carburetor
      • May use Holly 4412 500 CFM 2 bbl carburetor and receive 25 lb weight  reduction
         

    • Engines Option 2  (Sealed 602)
      • Any 4 bbl
      • May use Holly 4412 500 CFM 2 bbl carburetor and receive 25 lb weight  reduction
        • No HP or XP Carburetors
        • Must use 2 throttle return springs
        • Choke plate and shaft may be removed
        • The following items may be changed
          • Jets
          • Power valve
          • Accelerator pump
          • Pump cam may be changed
          • Discharge nozzles
        • Throttle Plate
          • Screws may be machined flush with shaft
          • Idle holes may be drilled
        • Warning: Carburetor may be rejected without reason.
                        It must be able to pass all WTC gauges
                        Do not alter it and you will have no issues


       

    • Engines   Options 3 and 4,
      • Open motor 325 cu. - 360
        • Must use Holly 4412 500 CFM 2 bbl carburetor or 390 4bbl carburetor
          • No HP or XP Carburetors
          • Must use 2 throttle return springs
          • Choke plate and shaft may be removed
          • The following items may be changed
            • Jets
            • Power valve
            • Accelerator pump
            • Pump cam may be changed
            • Discharge nozzles
          • Throttle Plate
            • Screws may be machined flush with shaft
            • Idle holes may be drilled
          • Warning: Carburetor may be rejected without reason.
                          It must be able to pass all WTC gauges
                          Do not alter it and you will have no issues.
      • Claimer Engine (Subject to change)
        • No carburetor rules at this time.
        • Individual motors may have specific carb and intake rules applied to maintain fair and equal competition.


         

  • 6.2 Spacer Plate
    • 1 inch spacer place allowed
      • Must be approved at inspection.
      • Can be refused without reason
      • No modifications
      • Max gasket thickness 0.075
      • Option 1-325 cu in  and under may use air management spacer including the "Super Sucker"
        • No Spacer over $150.00 will be approved.
           
  • 6.3 Air Cleaner
    • 12 inches minimum / 18 inches maximum
    • 5 inches maximum height
    • Must be totally covered by hood
    • No Air boxes are allowed
    • Max air opening between hood and windshield is width of the air cleaner used.
      Rear edge of hood must maintain contour of windshield.
      Rear edge may have 4 inch Max vertical opening.
       
  • 6.4 Fuel Systems
    • Fuel Pump
      • Stock type
      • Block Mounted
      • Electric pump permitted
        • must be wired to shut down by battery disconnect switch
        • must be wired to shut down by oil pressure switch.
    • Fuel Lines
      • Steel braided lines recommended
      • No cooling devices of any type
      • Lines must be steel conduit of passing through interior
      • Only a steel fuel filter may be used.
      • The use of a fuel check valve (Vacuum type) and standard check valve on vent is mandatory.
        • Vacuum check valve manufactured by Fuel Safe.
    • Fuel Shut off
      • Must be within reach of driver
      • Must be accessible for safety personnel without leaning into truck
      • Clearly marked off and on
    • Fuel
      • ONLY approved fuel allowed
      • Fuel must not mix with water or any additives

     

    • Fuel Cell   (New for  2018)
      • Dates (Expiration - Fuel cells / Bladders within 6 years)
        •  It is highly recommended that the fuel cell bladder be no more than six (6) years old.
      •  Gas cap must be painted white with the car number on it for identification. 
      • 22 gallons maximum.
      • must be mounted to the center of the chassis
      • Minimum ground clearance 7"
      • encased in steel container of no less than 22-gauge steel.
      • Minimum of (3) steel braces
        • under fuel cell going from front to back of cell
        • two braces on top for support.
      • crash bar must be mounted at rear of vehicle to protect fuel cell 1 ¾" tubing.
        • Crash bar must utilize four vertical braces.