PROUD SPONSORS
OF
THUNDERHILL RACEWAY
 







2012 MINI STOCK RULES

RACECEIVERS ARE MANDATORY!!

1. BODIES: 1971- 2004. Any compact or sub-compact front or rear wheel drive must have full stock body, firewall and floor plan. No sports cars, vans, Volkswagens or convertibles. Trucks are permitted: must be all stock for that vehicle. All parts on racecar must be stock except where noted. Any infraction may require weight penalty. After market hoods and bumpers ok.

A. Radiator protection bar must not be forward of the bumper. Bumpers do not have to be stock, but must not be wider than the fenders. Rear spoilers - ok, 8”maximum.

B. Front and rear wrecker hooks are mandatory, but must not extend past bumper. Minimum wheelbase 90” and maximum is 101. Cockpit style interior and skirting are permitted. Frames: Unibody must be reinforced - MANDATORY.

C. Racing seat, harness, window net, fire ext. fuel cell, three 3/8 rods in front of driver, full fire suit, and approved helmet. (Required at all times)

D. Aluminum Bodies: Allowed- Must Be Stock Appearing to the Make and Model of the Car, Look alike nose, fenders, doors etc.

E. NO WEDGE STYLE TYPE NOSES ALLOWED

F. Aluminum or Fiberglass Roofs Allowed

2. SUSPENSION: must be stock type. After market type springs and shocks ok. Must be in stock location. Alternations of upper or lower control arms and spring buckets are not permitted. Cars with leaf springs may have adjustable shackled- sliders on each leaf spring.

A. Jack bolts all four corners will be allowed.

B. Caster Camber Plates Allowed

3. WHEELS: Steel - 8” width max. Off set permitted.

(A) Bead locks-right side only but not mandatory.

4. TIRES:8” 60 series street radials only. No racing tires, recaps, etc. No 50 series tires.

5. ENGINES: 2300 cc max.  NO MARINE TYPE HEADS OR ENGINES

(A) Rods – 5.2 or 5.4

(B) Stock Crank

(C) Pistons – Cast – Hypertectic Coating is allowed

1. Any hydraulic cam and lifter is okay

(a) no roller cam or lifter of any type

2. Heads: decking of head is okay –No porting or polishing of head of intake

(A) Valves must be stock size for head

(B) Heads can be bow cut ¾” from seat of valve (no tolerance on bow cut)

3. Intake:

(A) Fuel injected intakes allowed

(B) No porting or polishing

(C) No After Market intakes

4. 1” Adapter –No tolerance

5. Maximum compression 170

6. Electric fuel pumps will be allowed but must have shut off going to oil pressure switch and approved by Tech

7. Toyota-Nissan 2000 cc etc.

6. TRANSMISSIONS: Must be stock OEM type with all working gears in standard shift, automatic transmission must have working torque converter. Clutch: Factory OEM and fly wheel. Fly wheel must weigh 13 lbs. min. Scatter-proof bell housing recommended.

7. WEIGHT: weight of cars after race with driver -2200 lbs.

8. BRAKES: Rear disc ok. Must be OEM rotors & calipers. After market pedals & master cylinders optional.

9. Any header.

10. ANYTHING NOT LISTED WILL BE AT TRACKS DISCRETION BY TECH MAN. IF IT’S NOT WRITTEN, YOU CAN’T RUN IT!

11. Track discretion to check any number of cars when track feels it is necessary.

12. PROTEST RULE: $350.00 – Complete Tear Down

$150.00 - Bore & Stroke

Track Retains $50.00 of the Protest Fee

13. Any Show Paying $1000 or More, Cars will Time Trial (2 Laps)

14. Racecivers Are Mandatory.

COMMON SENSE APPLIES TO ALL RULES