Mitchell Speedway Grand Opening! 1st Annual Ice Breaker Money Race on 3/12/2022!

Mitchell Speedway
870 Mitchell Rd
Dudley, NC 28333
919-429-1451
mitchellspeedwaync@gmail.com

Mitchell Speedway proudly presents the 1st Annual Ice Breaker on 3/12/2022 with many more races to come this year!

For reserved parking contact us at 919-429-1451 or via email at mitchellspeedwaync@gmail.com
Promotional pricing on yearly parking is $75.
Gate fees are $10 per person, 6 and under FREE!
Gates open at 1pm, Practice starts at 3pm.
$25 entry fee per class/per driver.
Payouts are 100% payback in all classes.

We Encourage Race Recievers or Nitro Bee for all racers!!


Pro Ducar Heavy- $800 to win Guaranteed!
$25 entry fee, 35 laps, weight #375, Reaper Tire (see rules below)

Ducar Super Heavy- $250 to win Guaranteed!
$25 entry fee, 25 laps, weight #425, Reaper Tire

Super Stock Main - $450 to win Guaranteed!
$25 entry fee, 25 laps, weight #375, Open Tire (see rules below)

Champ Buggy Main - $400 to win Guaranteed!
$25 entry fee, 25 laps, weight #425, Open Tire

Clone Heavy- $250 to win Guaranteed!
$25 entry fee, 25 laps, weight #375

Ducar Heavy - $250 to win Guaranteed!
$25 entry fee, 20 laps, weight #375, Reaper Tire, Gear rule 20/56

Ducar Light- Ages 12-15, 100% payback.
$25 entry fee, 20 laps, weight #325

Ducar Amateur- 100% payback.
$25 entry fee, 20 laps, weight #350

Clone Medium- 100% payback.
$25 entry fee, 25 laps, weight #350

Clone Super Heavy- 100% payback.
$25 entry fee, 25 laps, weight #425

Super Stock- B main, 100% payback.
15 laps, weight #375, Open Tire

Ducar Super Heavy- B main, 100% payback.
20 laps, weight #425, Reaper Tire, open gear


Race Procedures:
  1. One round of open practice, then heat races and qualifying, followed by races. 2-minute break interval between races. If qualifying is unnecessary then heat races will be 10 laps.
  2. Classes exceeding 12 karts will be split into A and B mains. The top 2 finishers in the B mains will progress to A mains and Pro-Class.
  3. If there are any disputes, the engine in question must be protested by a competitor or subject to tech by the track if the promotor/tech deems necessary. The protest fee will be $150 and acceptance fee will be $50. If the protested engine is found to be illegal, the protested driver will forfeit the $50.
  4. If there is any doubt as to the legality of any part on any engine, the competitor has the right to file a protest with the track/official. The part in question can then be shipped to DynoCams for review. Please include contact information for the promotor and we will contact the promotor with our findings on the legality of the part in question in a timely manner.
  5. All races will be double file starts (unless otherwise stated in class rules) with 3 choose cone restarts per race. A 5 to go compatition caution in all main races. It will always be choose cone restart.

Rules for Ducar light:
  1. Drivers between ages 12-15. Driver and kart must weigh #325 or more.
  2. Motor rules will be the same as Ducar rules.
  3. Open tire
  4. Gear rules 20/56.
  5. Races will start single file with a total of 20 laps.

Ducar Amateur Rules:
  1. Drivers must be 16 years of age or older. Please note that this is for beginner drivers. Driver and kart must weigh #350 or more.
  2. Motor rules will be the same as Ducar rules.
  3. Open tire
  4. Gear rules 20/56.
  5. Races will be a total of 20 laps.

Ducar 212 and Ducar Pro Rules:
  1. Drivers must be 16 years of age or older. Driver and kart must weigh #375 or more.
  2. All karts in this class must run Reaper Tires. Tire size for left front 10.5x4.50 – 6. Tire size for left rear 11x600 -6. Right front and Right rear 12x900 -6. Right side tires can measure no larger than 34.5” in diameter. If there is any dispute in tire sizes there will be a 10-minute cool down before remeasuring.
  3. Ducar class will run 25 laps
  4. Ducar class will have a 20/56 gear rule
  5. Ducar Pro class will run 35 laps for main race with a 5-lap competition caution.
  6. Ducar Super Heavy is open Gear!!!!
  7. Ducar Pro Class is Open Gear!!!!!
  8. Engine must be factory rated Ducar 212cc and run-in box stock configuration. All parts must be stock OEM factory production parts unless otherwise specified in these rules. No alteration, cutting, grinding or machining of any parts. No sandblasting, tumbling or polishing of any kind. This is strictly prohibited. All parts are subject to be checked by a known stock part if in question. No reading between the lines. If it is not specifically mentioned in these rules, then it MUST remain stock.
  9. Gas: 87 octane pump gas only. (Track to supply test sample)
  10. Block: Stock OEM Ducar 212 block with no machining allowed with the exception of cylinder clearance. Maximum bore size 2.758” 0 piston pop up allowed.
  11. Cylinder Head: No machining permitted on gasket surface and absolutely no porting of any kind. Maximum intake valve head diameter 1.062” +- .005” Maximum exhaust valve size .946” +- .005” Minimum depth from gasket mating surface to combustion chamber between valves it .485” +- .010” (for reference only.) The seats must be stock and can have the 3 angles of 30/45/60 as from the factory. However, you may not attempt to excessively sink the valves in an effort to increase airflow. Stock OEM graphite style head gasket only. Minimum .045” thickness. No sealer.
  12. Piston & Rings: Stock OEM dished piston with valve relief on exhaust side only. Maximum size 2.7565” measured at the bottom of the skirt. Stock OEM rings. No altering of the rings allowed, especially the oil ring.
  13. Rod: Stock OEM cast connecting rod only. Rod may be honed for oil clearance only. No rounded or broken edges. No billet rods allowed.
  14. Crankshaft: Stock unaltered OEM crankshaft. Governor gear must be installed in stock location. Max stroke 2.163 +-.010”
  15. Flywheel: Engine must run PVL aluminum die cast flywheel only. No cast iron OEM flywheels. Must utilize stock unaltered timing key. Stock OEM unaltered ignition coil.
  16. Camshaft: Must run stock OEM camshaft. Base circle size .865” +.010 - .005” Maximum Intake lift .225 Maximum In duration at .050” = 210 Maximum In duration @ .200 = 75 Maximum Ex lift .232” Maximum Ex duration @ .050” = 212 Maximum Ex duration @ .200” = 84 All checks to be taken at the push rod.
  17. Valve Train: Maximum valve spring wire diameter .079” Stock OEM springs must be used. (15lb @ .850”) Valve seal allowed on intake side only. No shims allowed. Stock OEM push rods must be used with a maximum length of 5.900” +-.010” Stock unaltered lifters and spring retainers to be used. No lightweight components.
  18. Carburetor: Stock OEM Ruixing carb only. Carb must be completely stock. No machining of any kind. Maximum venturi .615” and minimum venturi size .608” Carb bore maximum .750” Stock E-tube with a maximum of 20 holes. 1.092” minimum length and minimum outside diameter of .154” .066” maximum hole through the E-tube. Butterfly minimum .037” Minimum throttle shaft .115” Minimum screw length .305” Phenolic spacer must remain stock. Maximum pilot jet size .018” (.019”no-go) and must use both o-rings. Maximum main jet size .029” (.030” no-go)
  19. Air Box: Stock OEM air box must be used and in stock unaltered form only. Air must enter through the air filter only. Any open unused holes must be plugged. Stock OEM air filter with foam sock must be used.
  20. Muffler: Stock OEM muffler in unaltered form must be used. If any doubts about the integrity of the muffler should arise, simply cut the muffler in two, to determine legality by comparing to known stock muffler.
  21. Governor: Governor gear, arm and linkage must remain intact and functional. Track may require engine to be free revved on the stand to a certain RPM to determine if governor is properly functioning. (5500 rpm max for example) It has been our findings that some engines surge and some will not. We do not require the surge because in stock form the engine will perform best at 5000 rpm or less.
  22. Gas Tank (Optional): Stock tank can be removed and an auxiliary tank mounted in the floor pan. A top plate and fuel pump are allowed with the pump and be pulsed off the valve cover only. The vent tube can be unplugged and up to 4 - 1/8” holes in the fuel cap for venting.
  23. Low oil shutoff can be disconnected. No taping or decals added to the recoil in an attempt to block off air.
  24. Chain guard, throttle linkage, top plate and fuel pump are the only aftermarket parts allowed on the engine.
  25. There is no longer a claimer rule. The engine in question must be protested by a competitor or subject to tech by the track if the promotor/tech deems necessary. The protest fee will be $150 and acceptance fee will be $50. If the protested engine is found to be illegal, the protested driver will forfeit the $50.
  26. If there is any doubt as to the legality of any part on a Ducar 212 engine, the competitor has the right to file a protest with the track/official. The part in question can then be shipped to DynoCams for review. Please include contact information for the promotor and we will contact the promotor with our findings on the legality of the part in question in a timely manner.

Champ Buggy Rules:
  1. Drivers must be 16 years of age or older. Driver and kart must weight #425 or more
  2. Open tire rule.
  3. Open Gear rule.
  4. Motor must comply with NKA rules.
  5. A mains will be 25 laps and B mains will be 20 laps.
All Clone Classes:
  1. Drivers must be 16 years of age or older and weight listed per class (#350, #375,#400, #425
  2. Open gear rule.
  3. Motor must comply with NKA rules.
  4. All clone races will be 25 laps.
  5. Open tire
Super Stock Rules:

  1. Any 6.5 factory rated small footprint engine up to 212 cc. Various Clone 196, Ducar 212, hemi and non-hemi predator 212, 196 and 212 Tillotson engines etc. Animal can be used but it would be the most expensive option. 6” Calipers, 1” drop dial or digital indicator and sufficient bracket to hold indicator over pushrod and valve retainers. Degree wheel for duration. No go or 1 round pin gauge set for carb. Cc burette for compression
  2. Simple and to the point with no visual judgment calls. Yes or no on dimensions and stock parts comparison.
  3. No coatings of any kind inside engine or on engine components. Only the exhaust pipe can be coated.
  4. All “as cast and factory” blocks and cranks. No billet cranks. Minor grinding for cam rod, and crank clearance allowed on crank cam or block. No excessive lightening. Welding on short block/sidecover for bracing and/or repair is fine.
  5. Bore and Stroke are to be stock per the engines factory specs. Over bore for a rebuild is permissible.
  6. 212 cc style engines, 2.770 is Max bore, 2.165/55mm is max stroke, +\-.0098 / .25mm on stroke
  7. Animal 2.688 is stock bore, 2.728 is max bore size (.040 over), Max stroke for animal is 2.200 +\- .010
  8. Clone blocks can be bored to same specs as 212cc
  9. Billet sidecovers without cam bearings are legal.
  10. Any factory Stock length billet rod allowed with stock flattop or stock dished 3 ring piston and stock compression height (per factory specs for that particular engine choice). +.01,.02,.04 rods allowed to get correct deck height as long as compression height on piston is still stock and unaltered. No aftermarket pistons
  11. Stock factory valves. No aftermarket stainless steel or titanium valves. No tech on visual appearance but must be stock diameter. Clone heads can be fixed to allow 27/25 mm combo
  12. 27mm intake and 25mm exhaust +\- .25
  13. 1.062 intake and .984 exhaust +/- .0098
  14. 3 angles on the seat only, 1 angle on the valve
  15. Valve seat and bowl max inside diameter. Intake 0.975 24.76mm Max, Exhaust 0.875 22.22mm Max. Measuring in 3 spots if no go is not available.
  16. Any aluminum or machined steel flywheels are legal. !!!No stock cast flywheels!!! 3.3 lbs min weight. No super light finless flywheels
  17. Cam is .276 max lift at the pushrod. 250* duration at .050 max .276 max lift at the valve. No billet adjustable cams
  18. Install height is non tech
  19. 10.8lb 18lb 22lb or 26lb single wound springs. No dual or high tension single wound springs. Compare to a known unaltered 10.8/18/22/26 lb spring (Length, wire diameter, outer diameter, coil spacing)
  20. Aftermarket spring retainers allowed. Aluminum or steel permissible, No titanium
  21. Stock style stamped rockers only, ratio non tech but must be unaltered ball area and slot size. Grinding tips for lift is legal. Polishing of ball area and tips allowed.
  22. Studs and rocker nuts non tech
  23. Pushrod are non tech, no titanium
  24. Stock style flat lifters and must be magnetic
  25. No welding or epoxy added to heads as cast. Inside or out. Porting is allowed.
  26. AKRA porting tools for port size no go gauge for D shape Port Entry only. No tech on seat blending or touching valve guide
  27. Head gasket thickness non tech
  28. No piston pop out
  29. 14cc minimum chamber volume. Check Cc like a stock clone
  30. Intake manifold non tech. Pulse from intake or crank case is allowed.
  31. Hl series Tillotson carbs with 1.000 max throttle bore and .900 max Venturi
  32. Gas or Methanol allowed
  33. Exhaust is non tech just needs to be braced, wrapped in a safe manner with a blunt or flared tip, trumpet, washer etc.
  34. Must have fuel pump and throttle cable kit mounted in safe working manner.
  35. Open tire rule.
  36. All super stock A mains will be 25 laps and all super stock B mains will be 15 laps.
Tech procedure order
  • Fuel
  • Carb
  • Lift at retainer and pushrod
  • Duration
  • Slide rockers off and check CC
  • Ports, springs, and valves
  • Confirm stroke and bore per engine
  • Check for stock crank and 3 ring piston
  • Flywheel
 
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We yall be running a a clone 450 usually most people that run 425 run 450 also
 
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