600cc Micro Sprints Racing with TQ Midgets:

  • All cars and drivers must register with the ATQMRA to be eligible to compete.  click the following link to download an application.  Print out the form and sent it with a check made out to the ATQMRA for the appropriate amount to the address at the bottom of the form. http://www.atqmra.com/forms/ATQMRAApNEW.doc Micro Sprint car owners will have the voting rights of an ATQMRA Associate member.
  • All tires must be purchased at Sundance Vacation Speedway (Formerly Mountain)
  • All drivers racing with the ATQMRA at Sundance Vacation Speedway must register with Sundance Vacation Speedway $50.00 fee paid to track good for the season.
  • Micro Sprint drivers and cars will be allowed to
     compete by invitation only
  • Any dirt 600cc Micro sprint must make an attempt to convert to a pavement car. 
  • Any car wishing to compete must pass pre race tech inspection
  • Any car creating a hazard on the track due to erratic handling or driving will not be allowed to compete
  • Maximum ride height of 3”
  • 600 cc Micro Sprint Engine Rules will apply except where specified.
  • A maximum of a 10 square foot single stage wing will be permitted.  All wings are to be fixed, non-cockpit adjustable, with no pneumatics, hydraulics, sprints or levers as to allow adjustment by the driver.  All wings must have a quick release device to permit quick exit by the driver.  All wings, wings mounts, and releases must be approved in inspection.  Width of wing measured sail to sail no more than 36”. Length – no longer than 44”. Left side sail max. 24” x 49”.  Right side sail max 18” x 49".
  • No nose wings are permitted.
  • The measurement from the outside of the right tire to the outside of the left tire must not exceed 59 inches measured above the bulge of the tire at the bottom and move freely into the official gauge.
  • Alcohol is permitted in 600cc Micro Sprints
  • Four wheel hydraulic brakes are required
  • Car and driver must weigh a minimum of 810 lbs
  • LC5 or MG5 right rear tire
  • Pavement tires must be run on all four corners
  • Micro Sprints will run as a separate division within the ATQMRA.  Micro Sprints will have separate handicap and points but will be paid for where they finish in a race.
  • The Micro experiment will conclude at the end of the 2009 racing season.  Any continuation must be approved by a vote of car eligible TQ car owners.
  • Any changes to above mentioned micro specs must be approved by a super majority of the board.  A super majority is defined as 6 out of the 7 members.  All 7 members must be given the opportunity to vote.

 

 

600cc Micro Sprint Universal Engine Rules

1. Terms and conditions

• Internal Stock parts – must use original manufacturer parts for the particular

year and make engine except where noted. No mixing of parts from different year

and make engines, even if made by the same manufacturer. Non stock external

bolt on parts may be used (example: billet oil pan, starter, water pump cover, oil

cooler, pipes, etc.)

2. Overall Engine

• Must be a Production Motorcycle Engine, 4 cylinder, 4 stroke

• Current year engines allowed

• No Titanium anywhere in or on the engine, unless it comes stock form

manufacturer of engine on the production bike

• Must have engine, clutch, and transmission all in one unit

• Must be Chain Drive

3. Bore and stroke

• 600cc Maximum for engine model that was new in 2006 and up. Other

engines are 637cc maximum. Engine model is defined as a manufacturer redesign

of overall engine. See Specification list. In the racing year starting in 2013

displacement may not exceed 600cc on any engine.

• Standard Stroke only (no strokers)

4. Head and cams

• NO PORTING, Blending the Bowls, or Blending the Valve Seats (exhaust or

intake) Valve jobs are acceptable.

• Cams do not need to be stock, but the lift must be no greater than stock.

(duration is open)

• Cam timing may be adjustable

• May use any valves, but they may be no larger than stock valves.

• Head may be resurfaced

• Any head gasket may be used

5. Pistons

• Any Piston may be used, must be within cc limit specified under bore and

stroke

6. Bottom End

• No machining to remove weight from the crank (no after-market cranks) (no

lightweight cranks)

• Stock connecting rods must be used (no after-market rods)

• Aftermarket rod bolts may be used

7. Clutch/Transmission

• The clutch does not need to remain stock, but must remain operable

• Transmission gears must be stock, no close-ratio gears or nonstandard gearratios

• All gears must remain in transmission, no removing any gears.

8. Ignition

• Stock Rev Limiter must remain intact at all times (ex: no switched or gear

specific limiters). No hot ECU boxes, no modified ECU boxes. Factory race

boxes are ok, but must have the rev limit set to the street bike stock rev limit. If a

computer is hooked up to check the ECU it must be set to factory stock

specifications, no tolerance. See specifications list for RPM limits.

• All cars must have the PA standard connector for the track to check engine

rpm rev limit. These are available from the chassis manufactures and engine

builders, and at the track. All cars must leave intact the rpm wire coming from the

ECU.

• Stock appearing ignition must be used (no after-market ignition systems,

factory race ignitions are ok) may use different year ignitions from same

manufacturer as long as stock rev limit of engine (not ignition) is retained.

• No aftermarket coils

• Engines that came with stock fuel injection may use an after-market add ons

(example: Power Commander, Dim Sport) to adjust the fuel curve and/or timing

(essentially the same as adjusting jetting and using an ignition advancer).

• Ignition advancers may be used

9. Induction system

• No mechanically forced induction (turbo charging, supercharging)

• Any carburetors may be used on any engine, regardless of year of engine.

• If the engine did not come from the factory with fuel injection, fuel injection

may not be used.

• If the engine came with factory fuel injection, the fuel injection may be used

and may be converted for use with alcohol. The stock fuel injection throttle bodies

must remain, but may be modified for use with alcohol. Any number of injectors

may be used regardless of stock number of injectors.

10. Exhaust

• Any exhaust may be used, as long as there is a muffler included with the

system that will keep noise levels within individual track limits.

11. Charging system

• The stock original factory charging system may not be removed, and must

remain in complete working order. No factory racing charging systems.

12. Self Starting

• The engine must self-start at the beginning of the event. If it does not selfstart,

the car may be pushed off and must start at the rear of the event as the

penalty.

13. Fuel

• Alcohol or gasoline may be used, no exotic fuel additives, non flammable top

lube only, no fuel enhancer top lube.

•

 email Blu4a@rcn.com with any questions and to register with the ATQMRA

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