THESE ARE THE ONLY CHANGES WE MADE FOR 2012

PRO-STOCK- To include all Stock Raptor, all Stock Animal Alcohol and all Senior Stock classes. Due to the lack of karts in 2 of those classes we have decided to combine them all. Here is the difference. All Animal engines will have to run the 3 hole Gold Plate. You can run either Alcohol or Gas and can have a Stock Animal Alcohol engine or Animal Gas Box Stock but all will run the plate. Stock Raptors have not changed. We also will drop the weight in the class to 350# for all karts in the class. It should make for some great racing. With the plate the engines will be within 2 tenths of a horse power. Giving the Raptor 2 tenths advantage but the Animal will have a slight advantage on torque.

WINGED OUTLAW – We are running 3 classes of Wings this year. All classes will be involved in NWOK National Standings and VKS will be a National Santioned Track and running NWOK Engine Rules.

First is the Winged Outlaw Animal for ages 12-16. Using a Animal Alcohol engine and a weight to be determined later.

Winged Outlaw 250cc will be Similar to what we run now but will now include any 250cc 4-stroke or 2-stroke dirt bike style single cylinder engine. The 4-stroke MUST BE STOCK!!!! 2-Stroke can run with the rules from last year.

Winged Outlaw Open 500cc will be any dirt bike style single cylinder engine, 2-Stroke or 4-Stroke with a maximum 575cc. Check NWOK.org for more rules.

CLONE – This is the only Clone Class we are running this year. To include up to a Stage 3 Clone engine. Then we are running wka/akra rules which are similar except exhaust and we are running akra exhaust rules. See below engine rules on clone.

 BOX STOCK/ 6.5 CLONE
2011 RULES

ENGINE SPECIFIC TECH SHEET FOR: BOX STOCK 6.5 OHV

DESCRIPTION:  SINGLE CYLINDER, 2 VALVE, OHV 4 CYCLE
IMPORTANT NOTE: ALLPARTS MUST BE BOX STOCK FACTORY PRODUCTION PARTS UNLESS OTHERWISE SPECIFIED IN THESE RULES.  NO MACHINING OR ALTERATION OF PARTS IS ALLOWED UNLESS SPECIFICALLY NOTED.  ALL PARTS WILL BE SUBJECT TO A COMPARISON TO A KNOWN BOX STOCK PART ( WHEN PERFORMING A ”STOCK PART” COMPARISON CHECK IT IS RECOMMENDED TO USE A +/-.005″ TOLERANCE).  ENGINE WILL BE TECHED AS RACED.  THERE WILL ALSO BE A $200 CLAIMING RULE IN PLACE FOR THIS ENGINE.  REFUSING TO ACCEPT THE CLAIMER WILL RESULT IN IMMEDIATE DISQUALIFICATION OF COMPETITOR ALONG WITH FORFEITURE OF ANY POINTS EARNED TO DATE IN CLASS.  COMPETITOR WILL ALSO NOT BE ALLOWED TO COMPETE FOR  TWO WEEKS IN THE CLASS. THE SECOND TIME YOU REFUSE YOU ARE NO  LONGER ALLOWED TO COMPETE IN THE CLASS.
COMBUSTION CHAMBER VOLUME: 26.5 CUBIC CENTIMETER MINIMUM, WITH PISTON AT TDC, USING PRESCRIBED PROCEDURE.
CYLINDER HEAD REQUIREMENTS: MUST BE OEM CASTING ONLY.  PORTING AND/OR GRINDING ARE NOT PERMITTED.  VALVE SEATS ARE TWO ANGLES, 45 DEGREES VALVE FACE AND 30 DEGREES TOP RELIEF.  INTAKE SEAT MAXIMUM ID .897″, EXHAUST SEAT MAXIMUM ID .863″.  STOCK HEAD BOLTS ONLY.  MUST HAVE FOUR.  HEAD GASKETS MAYBE AFTER MARKET, UST BE OF STOCK CONFIGURATION, 2 GASKETS PERMITTED WITH A TOTAL MINIMUM THICKNESS OF .008″ AND A MAXIMUM OF .020″.  NO COPPER OR ALUMINUM GASKETS ALLOWED.  ANY STOCK CONFIGURATION EXHAUST GASKET ALLOWED, NO OTHER SEALER.
BLOCK REQUIREMENTS:  BLOCK MUST REMAIN STOCK AS PRODUCED.  STUB FOR GOVERNOR MAY BE REMOVED AND HOLE PLUGGED.  NO MACHINING OF BLOCK ALLOWED.   WELDING TO THE BLOCK SHALL BE FOR ROD DAMAGE REPAIR ONLY AND MAY NOT CONSTITUTE A FUNCTIONAL MODIFICATION.  STOCK CYLINDER BORE IS 2.685″ MAX.  STROKE IS 2.213″ + .010″ OR -,005″.  NO PISTON POP-OUT ALLOWED.  MATTING SURFACE FINISH OF BLOCK AND CYLINDER HEAD IS A NON TECH OTEM, SURFACING OF BOTH TO CORRECT GASKET FAILURE AND MEET CC CHECK ALLOWED.  MAY USE 2 SIDE COVER GASKETS OF STOCK CONFIGURATION.
CARBURETOR REQUIREMENTS:  HUAYI OR RUI*ING MODEL CARB ONLY.  CARB TO INTAKE SEALER IS GASKET ONLY.  NO OTHER SEALER ALLOWED.  CHOKE MUST BE AS SUPPLIED FROM FACTORY, BUT MAY BE FIXED TO STAY IN OPEN POSITION.  VENTURI .615″ NO-GO. REAR CARB BORE .751″ NO-GO.  MAIN FUEL JET .042″ NO-GO.  LOW SPEED IDLE JET .019″ NO-GO.  STOCK EMULSION TUBE MUST BE USED AND UNALTERED,.066″ MAX ID (NO PASS THROUGH).  THROTTLE SHAFT-.115″ MINIMUM.  BUTTERFLY-.037″ MINIMUM.  AFTERMARKET AIR FILTER ADAPTER ALLOWED (MAX LENGTH OF 1.375).
VALVE TRAIN:  STOCK VALVE COVER ONLY WITH ANY STOCK CONFIGURATION GASKET.  NO SEALER.  FACTORY STOCK ROCKER ARMS 1:1 RATIO AND PUSH ROD ONLY.  STOCK VALVES ONLY 45 DEGREE ANGLE ONLY BOTH VALVES,INTAKE VALVE MAX OD .985″+/-.005″ AND EXHAUST VALVE MAX OD .948″+/-.005.  NO MODIFICATIONS ALLOWED. ONLY BOX STOCK VALVE SPRINGS.  MAX WIRE DIAMETER ON SPRING WIRE IS .071′ WITH A MAXIMUM OF 10.8 LBS.   AT A HEIGHT OF .850″  LASH CAP ON EXHAUST VALVE ONLY.  VALVE STEM SEAL ALLOWED ONLY ON INTAKE VALVE, MAXIMUM LIP THICKNESS OF .027″.  MINIMUM THICKNESS OF INTAKE RETAINER.230″, EXHAUST RETAINER .250″.  BS LIFTERS ONLY, NO MODIFICATIONS ALLOWED.
IGNITION SYSTEM: STOCK BOX STOCK SYSTEM ONLY AND MUST BE UNALTERED.  KILL SWITCH AND LOW OIL SENSOR MAY BE DISABLED AND REMOVED.
FLYWHEEL:  BOX STOCK FLYWHEEL ONLY (5LBS. 4 OZ MINIMUM) INCLUDING PLASTIC FINS.  NO ALTERATIONS OF ANY TYPE ALLOWED. MAXIMUM IGNITION TIMING ADVANCE IS 18 DEGREE BTDC WHEN A STRAIGHT EDGE PLACED ON THE OUTSIDE OF THE RIGHT-HAND COIL LEG IS JUST TOUCHING THE RIGHT HAND EDGE OF THE METAL MAGNET COVER OF THE FLYWHEEL.  FLYWHEEL KEY IS NON TECH.
PISTON AND RINGS:  MUST BE UNALTERED BOX STOCK ONLY.  NO MACHINING OF PISTON AND RINGS ALLOWED.
CONNECTING ROD:  STOCK BOX STOCK ROD ONLY.  NO MACHINING OF ANY TYPE ALLOWED.  STOCK ROD BOLTS ONLY.
CRANKSHAFT REQUIREMENTS:  STOCK BOX STOCK CRANKSHAFT REQUIRED. MACHINING, POLISHING, ADDITION OF MATERIAL OR OTHER ALTERATION OF CRANKSHAFT IS PROHIBITED.  STOCK FACTORY TIMING GEAR MANDATORY AND MUST BE INSTALLED IN ORIGINAL LOCATION.  CRANKSHAFT JOURNAL DIAMETER IS 1.180″ MAX-1.168″ MIN.
CAMSHAFT REQUIRMENTS: STOCK CAMSHAFT CORES ONLY, EZ-SPIN ASSY MUST REMAIN AS STOCK.  CAM LOBE BASE CIRCLE DIAMETER .865″-.005/+.0 10″ DURATION CHECK FOR INTAKE AND EXHAUST LOBES (TAKEN OFF PUSHROD).  INTAKE DURATION OF 219 DEGREES AT .050 LIFR/86 DEGREES AT .200 LIFT.  EXHAUST DURATION OF 222 DEGREES EXHAUST AT .050″ LIFT/97 DEGREE AT .200″ LIFT ( ALL DURAION CHECKS ON INTAKE AND EXHAUST ALLOW +/-2 DEGREES FOR WEAR AND GUAGE VARIANCES).  MAX INTAKE LIFT ON CAM .225″-MIN .215″ LIFT TAKEN AT THE PUSHROD.  MAX INTAKE LIFT AT THE VALVE .238″  TAKEN ON VALVE SPRING RETAINER WITH ZERO LASH.  MAX EXHAUST LIFT ON CAM .232″- MIN.222″ LIFT TAKEN AT THE PUSH ROD. MAX EXHAUST LIFT A THE VALVE .242″ TAKEN ON VALVE SPRING RETAINER WITH ZERO LASH.
BLOWER HOUSING ASSEMBLY:  PULL STARTERS OPTIONAL.  PULL STARTER MAY BE ROTATED FOR A BETTER CRANK ANGLE.
FUEL TANK REQUIREMENTS:  FLOOR MOUNTED FUEL TANK OPTIONAL.  PULSE TYPE  FUEL PUMP ALLOWED.
FUEL PUMP REQUIREMENTS: FUEL PUMP MUST BE PULSED FROM EITHER THE CRANK CASE OR THE VALVE COVER.  YOU MAY INSTALL A FLAT METAL PLATE IN THE ORIGINAL TANK LOCATION FOR THE PURPOSE OF MOUNTING THE THROTTLE LINKAGE AND FUEL PUMP.
CLUTCHES:  ANY CLUTCH ALLOWED.  DISC CLUTCHES ALLOWED.
HEADERS:  OPEN HEADER RULE
CLAIMER RULE:  YOU MUST FINISH THE RACE IN THE BOX STOCK CLASS TO PURCHASE THE TOP THREE FINISHERS ENGINE FOR $200 (MINUS THE CLUTCH/CHAIN GUARD/THROTTLE KIT/HEADER PIPE/MUFFLER/AIR FILTERADAPTOR/AIR FILTER/ TOP PLATE & FUEL PUMP.
STOCK FLYWHEEL ONLY.
NO ALTERATIONS TO OR FROM STOCK COMPONENTS ARE ALLOWED.