UPDATED 11/20/2025 FOR THE 2026 SEASON - ALL motors must be re-sealed for the 2026 season - no exceptions.

For motor seals, please see tech contact information at the bottom of the page.

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1. Please review the track "General Rules" page on the website.

2. Jr Sprint driver age range is from 7 years of age to 14 years of age.

3. All safety equipment must meet track requirements including helmets, firesuits( must be at least 2 layers or 1 layer with Nomex under garments) shoes, gloves, belts, etc.

4. Driver arm restraints are mandatory.

5. Head and neck restraint system mandatory.  Neck collars are not permitted.

6. 5-point racing harness and shoulder harness must be in good condition and approved racing type only. Cannot be older than 2 years.

7. Full containment seat is required and must fit driver. Helmet must be at minimum 4" below cage. Must pass safety inspection as per track rules.

8. Each driver must show they can exit their car under their own power before their first race (remove seatbelt, steering wheel and climb out of the car with all racing gear on).  *** Please make sure to practice this with your youth driver prior to attending their first test & tune or race.  We will schedule a youth driver safety training in April (during an open practice) for youth drivers to practice exiting their cars, to review track procedures and inspect safety gear.

 

Jr Sprint Car:

1. Car must be a 270 or 600 micro chassis.

2. All cars must be constructed to look like a micro sprint. All cars must be equipped with complete body parts, hoods, tails, side panels, belly pans, etc. All cars must have legible numbers printed on both sides of the tail and nose.

3. Roll cage minimum thickness 0.065" of (6) hookups. Must be well gusseted. Minimum 11/4" OD tubing. Complete frame 0.065" minimum 1" tubing may be used if wall thickness is at least 0.083".

   4. Halo is mandatory on all cars — NO EXCEPTIONS.  Bolt on or weld on is acceptable.

   5. All steering and suspension points that are bolted together must use locking nuts, safety wire, or cotter pins.           

       The steering mechanism must be constructed of a minimum 3/8's radius rod.

   6. The belly pan must extend from the front of the seat to a point beyond the driver's feet. 

   7. All cars must be equipped with nerf bars left and right extending to at least the inside of the tire, but not         

       beyond the outside of the tire.

   8. All wet cell batteries mounted in the cockpit must be covered and vented out of the cock pit area.

   9. Brakes will be sufficient strength to slide the wheels in the pits or stop the car while in motion on the track.

  10. Each car must have a workable fire extinguisher in the pit area.

  11. Minimum weight (car and driver) 500 pounds after the race. 

  12. Wheel base — 56" minimum and 72" maximum. Car width shall not exceed 60" overall sidewall to sidewall.

  13. No wings - Jr Sprints at BHS are wingless.

  14. Raceceiver radios and transponders are mandatory. MyLaps transponders are to be placed 21 inches back               

        from the center of the front axel on the right side.

  15. Starter switch must be in reach of driver.

  16. Chain guard or body must be constructed to prevent chain from hitting the driver in case of chain failure.

  17. Front and rear bumpers are mandatory.

  18. Hoosier or American Racer tires (BHS is an open tire track)

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• Engine Rules:

  • Stock Honda GX270 engine

  • All parts used in repair or replacement are to be Honda Genuine parts

  • Governor is not mandatory and may be removed

  • Air cleaner must be stock for Honda GX270

    • Air cleaner may be moved for seat clearance issues

    • Air cleaners MUST stay in dirty air out under the hood behind the driver's seat or elsewhere in the cockpit area under the hood line.

    • No ram air, forced air options, or “clean air” mounting locations

  • Cam shaft must be Stock Honda GX270 cam shaft

    • NO after market cams of any kind are permitted

    • Stock lift and Duration only

      1. Cam subject to Degree wheel and dial indicator

    • NO cam twisting

    • Cam shaft must have a functional compression release lever

  • Counter Balance shaft is not mandatory

  • Crank shaft must be Genuine Honda GX270 crank with or without balance shaft gear.

    • NO lighting, polishing, or media blasting of the crank.

    • Crank shaft subject to tech against known stock crank of like style.   

  • Valve train must remain stock

    • Valve springs are to be stock

    • Valve spring will be measured for maximum stock free length of 1.52” +/- .002”

    • Valve springs will be checked for stock psi at installed height 1.15”

    • NO valve spring shims allowed with the exception of the factory exhaust shim of .020”

    • Stock valve spring retainers

    • Rocker arms must be Stock Honda Genuine

    • Rockers will be checked against known factory stock rockers for bending or alterations

    • Stock 1:1 ratio only

    • Push rods must remain stock

    • NO aftermarket push rod permitted

    • NO tech on valve lash, lash will be set at time of sealing or tech inspection.

  • Must run a Stock Honda 9hp Mikuni carb serial # 21J or 78B only. These are etched into the carb from factory 

  • Carb is subject to tech

    • Venturi opening will be measured

    • Main jet may be adjusted in size

    • Emulsion tube must remain stock and will be checked with a stock one and gauge

    • Pilot jet may be adjusted

    • Stock GX270 carb insulator must be used

  • Stock Honda Fly wheel must be used

    • NO lightening of the fly wheel must remain stock with magnets

    • The charge coil may be removed is not required

    • Lapping of the flywheel to the crank is permitted

    • NO altering of the fly wheel fan

    • Must be stock with no fins missing or shortened

    • Stock pull start assy is not required and may be removed

  • Combustion chamber subject to Minimum volume cc tech

    • Must use stock connecting rod and stock piston assembly

    • NO aftermarket billet rods or pistons are permitted

    • NO flat top pistons are permitted

    • Upgrading from UT1 style piston to UT2 style piston is acceptable.  

    • NO machining, drilling, or piston skirt modification

    • Piston and connecting rod will be subject to weighed and rod measured for length to known stock.  

  • Ignition must remain in the stock location.

    • NO altered timing key may be used

    • Must have a stock timing key installed

    • Non revlimited coil must be used, Part # 30500-Z5K-801

    • NO hot coils are permitted

    • NO indexing/shimming of the spark plug

 

• Cyl heads must not be altered in any way.

  • NO porting or polishing of any kind

  • NO adding epoxy, smoothing, beveling of the cyl head ports, surfaces is permitted.

  • NO media blasting of the intake or exhaust ports are permitted must be as cast   

  • NO machining of the head surface or valve grinding is permitted

  • Lapping in the valves is permitted

  • NO machining of top of head, under the rocker arm plate. Maybe compared to the known stock. This means visual inspection and dimensions may be compared to sample stock head

• Cyl block must a Genuine Honda GX270 block with no after market blocks permitted

• Oil level sensor is not mandatory and may be removed

• Crank case cover must be stock no billet cover permitted

• Valve cover is to remain stock, painting the cover is permitted

• NO coating and or polishing/micro polishing on any engine components.

• All other eng components not listed above are to remain O.E.M stock as it was produced.

• Clutch is to be a drum / shoe style only,

  • NO plated disc type clutches

• Pump gas only 87 / 89 / 93

  • NO hot fuels or racing gas

  • Fuel will be subject to tech

• Gravity fed or pulse pump system is permitted

  • NO electric fuel pump

• Stock muffler or header pipe is premitted

• NO flammable oil additives.

  • Oil sample subject to tech after feature event

 

• Engine seals and seal documentation:

  • Engine seals will be installed at the time of PASSED engine tech.

  • The engine tech will apply a captive button type seal with a serial number on the outside of the seal to indicate the area sealed

    • 4 seals will be applied to the engines; 2 on the flywheel cover, 1 on the crank case cover, 1 on the valve cover.

  • ANY signs of, or evidence of, in the area of the seal that tampering to remove the seal will result in a disqualification.

  • A tech sheet will be filled out and retained by the engine tech

    • Upon completion of the tech process both signatures of the engine tech and the engine owner will be on the bottom of the tech sheet.

  • A hard card will be provided upon the completion of a PASSED tech either in person or by mail due to tech location.

    • The hard card will be a credit card size and will contain the following

    • Owners Name

    • Flywheel seal numbers

    • Valve cover seal number

    • Crank case seal number

    • Engine Serial Number

    • The hard card will need to be kept with the engine at all times - DO NOT LOSE THIS CARD!

    • Loss of the card will result in the need to have a new card printed and seals confirmed by the engine tech for tampering for a fee of $50

  • Random checking of the seals to the hard card can be done by ANY TRACK OFFICIAL or TECH OFFICIAL at any point of the race night.

    • Please keep these cards accessible and a safe location to keep this process as efficient as possible. 

 

• Engine Protest Rules:

  • This protest form and cash must be submitted to the Track Owner, Race Director, or track designee, before the end of the race that the protested engine is participating in (before checkered flag lap is complete).

  • The protest can only be made during a feature event.

  • Engines may be protested for $350.00 cash only.  The person protesting the engine must have their engine inspected for compliance first.

    • If the “protester’s” engine is found illegal the protest is null and void and the protest fee will go to the track. If the “protester’s” engine is found legal the protest will continue.

    • If the “protestor’s” engine is found legal and the protested engine is found illegal, you will be refunded $300 and $50 will go to resealing your engine.

  • The track will hold the protest money until the protested engine has been inspected for legality. The protested engine shall be tagged/marked and removed.

  • The protested engine as well as the engine of the protesting party shall be immediately taken to impound. The engine must remain in impound and in the possession of tech officials throughout the entire process.

  • If the protested engine is found to be illegal, the motor must be completely torn down to check for additional illegalities

    • All illegal parts and related parts from the protested engine will be confiscated at the owners expense.

    • Refusal of protest, destroying or withholding of parts or any other lack of cooperation in this protest or inspection process shall be interpreted as an admission that the engine is illegal and shall subject the driver to the conditions set forth in the Suspensions Program.

 

• Illegal Engine Suspension Rules:

  • Teams and drivers guilty of having an engine declared illegal at technical inspections shall be disciplined as follows:

    • First offense: 1 week suspension, loss of points, and $100 reseal fee upon getting engine teched for legality after you put it back to legal per tech book.

    • Second offence: 2 week suspension, loss of points, and $100 reseal fee upon getting engine teched for legality after you put it back to legal per tech book.

    • Third offence: 1 Month suspension, loss of points, and $100 reseal fee upon getting engine teched for legality after you put it back to legal per tech book.

 

ALL questions related to the Jr Sprint Division at Blanket Hill Speedway should first be directed to track owners Phil & Shannon Thornton via the website contact form or at 814-590-8591. Thank you.

 

For motor seals please contact:

* Western Pa Tech is Jimmy Horwat @ 724-840-8980 or JT Horwat @ 724-599-4125. (Blanket Hill Speedway)

* Eastern Pa Tech is Ed McKeown @ 570-854-9512 (Greenwood Valley Action Track & Jr Sprint events at Clinton County Speedway)

 

Representative for Western Pa :  AJ Bast @ 717-319-3104

Representative for Eastern Pa:  Keith Crossley @ 570-204-3087

*** The rule book is subject to change at any time.  Last updated on 11/20/25.