Cedar Lake Speedway and Arena

The Micro Meltdown features three divisions of cars. They are:

 

- Open Winged

- Open Non-Winged

- Stock Winged

 

Rules for each of these divisions are below. Please call 612-363-0479 with any questions.

 

Open Winged Class

·         640cc MAX displacement. No Nitrous, turbo or superchargers permitted.

·         12 Years Minimum Age

·         Wings: 4x4max, max left sideboard 26” x 54”, right sideboard 24” x 54”.

·         Nose Wing: 4 Square Foot

·         D20 Right Rear or equivalent, Must durameter 15mn after race.

·         Loss of any bolt-on weight during competition will disqualify the individual from that event.

·         Outlaw Winged  775lb. including the driver, at the conclusion of the race.

 

Open Non-Winged Class

·         640cc MAX No Nitrous, turbo or superchargers permitted.

·         12 Years Minimum Age

·         D20 or Harder Right Rear

·         Loss of any bolt-on weight during competition will disqualify the individual from that event.

·         Weight Rule: Outlaw Micro Sprint 775 lb. including the driver, at the conclusion of the race.

 

Stock Motor Winged Class

·         Stock 600cc

·         12 Years Minimum Age

·         Any 600cc OEM CV Carbs - No Flat Sides

·         Wings: 4x4max, max left sideboard 26” x 54”, right sideboard 24” x 54”.

·         Nose Wing: 4 Square Foot

·         D20 or Harder Right Rear

·         Electronic fuel injection allowed, no mechanical injection.

·         Weight Rule: 800lbs., including driver, at the conclusion of the race.

·         Loss of any bolt-on weight during competition will disqualify the individual from that event.

 

Stock Motor Rules

·         Cams & cam timing must remain stock and match the make and model.

·         Stock 600cc any year other than current year production.

·         Motors can be rebuilt and freshened but must stay within factory spec and parts as listed

·         Any 600cc OEM CV Carbs, injection or Flat Sides allowed. No Mechanical fuel inj.in 2012.

·         Engine 600cc 4 cylinder 4 stroke as comes on a stock production bike for public sale in the U.S.A.

·         No current year production engines.

·         No titanium anywhere in or on the engine, unless it comes stock from manufacturer of engine on the production bike.

·         Except as noted, all internal and external engine parts must remain stock with no modifications, metal removal, or blueprinting.

·         Valve seat inserts may be reworked to stock specs. Valve springs may be shimmed with standard or aftermarket shims.

·         Cams and Cam gears must remain stock.

·         No reworking timing on stock cams and no aftermarket cams. Duration, lift and timing must remain as it came stock from the bike. Cams must match year and make of motor.

·         Cylinder head combustion chambers may be cleaned by bead blasting with valves seated in

·         place. No altering head in any way.

·         Cylinder head gaskets may be replaced only with original equipment manufacturers stock parts (All 3 layers of the head gasket must be used). All other gaskets may be replaced with duplicate aftermarket parts.

·         Light cleaning of gasket surfaces with steel wool, Scotch-Brite, etc. is allowed to remove carbon build up.

·         Transmission gears may be shimmed only for the purpose of proper engagement. Standard or aftermarket shims may be utilized. All gears must remain in motor as factory stock released.

·         Aftermarket cam chain tensioned allowed for safety of motor.

·         Fuel injection engines may run carburetors. Injected with power commander or other tuners allowed gas or alcohol.

·         Fuel injection engines running carburetors may change all fuel metering devices to tune fuel curve, Billet intake boots allowed.

·         Modification of oil pan & oil pick up allowed or aftermarket ok.

·         Aftermarket or modified timing trigger on crank pickup is allowed.

·         Modification to thermostat cover allowed or aftermarket ok.

·         Modification to water pump cover allowed or aftermarket ok.

·         Any air box OK, stock appearing CDI OK, aftermarket washable replacement air filter OK, power commander or other fuel injection control models OK.

·         Any 600cc OEM CV carburetors are OK.

·         Charging system must remain intact with all parts present.

·         No dry sump systems are allowed unless it comes from the motorcycle manufacturer as original equipment.

·         No aftermarket coils.

·         No aftermarket throttle bodies other than flat slides.