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LIMITED SPRINT RULES |
The following limitations and restrictions shall govern the
LIMITED SPRINT cars.
A. BODIES
1. Construction material may be fiberglass, aluminum, or
plastic.
Numbers must be 18’ high and legible on both sides of tail tank,
both sides of top wing sideboards and on top of wing at an
angle. Any numbers or letters preceding or following number must
be 9” and legible.
East Bay Raceway Park officials are not responsible for scoring
errors arising from duplicate numbers, similar (or identical)
cars or non-legible numbers on cars.
2. NO ROOFS of any kind.
3. NO HOLES are permitted in the rear tail section except for
the fuel tank filler opening.
4. The fuel tank filler will not be outside the body.
5. The tail section cannot cover any portion of the rear tires.
Tail sections shall be mounted inside of the frame rails.
6. The hood must extend beyond the front of the radiator.
7. The front and rear wheels must be fully exposed.
8. Nerf bars may NOT EXTEND past the outside edges of the tires,
one-inch tolerance.
9. The front bumper may NOT EXTEND more than 12 inches in front
of the front tire.
10. The maximum bumper and nerf bar material size allowable is
one inch O.D. round tubing.
11. Open wheel cars only are permitted.
12. Wings: Fixed top & nose wings only. No driver adjustable
wings. Maximum top wing size of 25 square feet with 30 inch side
panels. Maximum center foil width of 60 inches. The deepest
point allowed in the top surface of the wing will be 2 inches
measured from top front of wing to the front edge of 1-inch turn
up of the rear edge (or to the rear edge, if there is no
turn-up). Top surface of the wing measuring crosswise must be
flat. No one will be allowed to compete without top wing (unless
it is a non-wing special show). No wicker bills or additives to
center foil. One inch, 90 degree angle turn up allowed at rear
of center foil (maximum). Center foil must be one piece. Side
panels must be 1 piece. No split wings. Top wings must not
extend beyond outside of rear tires.
Maximum front wing size is six (6) square feet total with a
maximum width of 36 inches and 12 inch side panels. Two
stationary foils on rudders will be allowed to run the entire
length of the underside of the top wing. Maximum height
proportions are one inch at the front and three inches at the
rear.
Must have 18” number on top of wing at an angle.
No side foils, rudders, or panels are to extend beyond roll cage
on any side, no body pieces to extend beyond or underneath front
torsion tube except hood. Sunshields cannot restrict vision. NO
wedges or foils under race car. No pieces may be added to the
frame so as to resemble, imitate, or be specifically designed to
deflect, trap, or form a wind break of any nature; except those
used to cool/protect the motor and braking system.
13. Floor boards must be horizontal relative to the angle of the
body.
14. Motor plate must be vertical relative to the angel of the
frame.
15. Sprint car appearing tail covers may be used.
B. CHASSIS
1. The rear roll bar must be made of a minimum 1-3/8 inch O.D.
tubing.
2. There must be a minimum 2-inch clearance measured from the
top of the roll bar to the top of driver's helmet with the
driver seated upright in a natural position in the car.
3. The frame material must be made of a minimum 1-3/8 inch O.D.
tubing. Round or rectangular tubing is acceptable.
4. The minimum allowable wheel base is 84 inches.
5. The maximum allowable wheel base is 100 inches.
6. Maximum width on the front, measured from the outside of the
tire to the outside of the tire is 72 inches, 1" tolerance.
7. Maximum width of the rear, as measured from the outside of
the rear tires to outside of the rear tires is 78 inches, no
tolerance.
8. The engine must be mounted in the center line of the chassis
as defined by the cam shaft. A maximum tolerance of 1" is
allowed.
9. The engine must be mounted in an upright vertical position.
No tilting or leaning allowed.
10. The maximum rear-end offset will not be more than 3" as
measured from the center line of the quick change to 44" maximum
to outside right rear wheel.
C. SUPENSIONS
1. No fiberglass or carbon fiber parts allowed on the front
axle.
2. Only straight or dropped front axles are permitted. (King pin
types only).
3. No A-Frame or independent front ends permitted.
4. All rear ends to be quick change.
5. Front axles to be a maximum of 54 inches as measured from the
canter of the king pin to the center of the king pin.
D. DRIVE TRAINS.
1. If stock clutch used, it must have 360 degree 1/4 scatter
shield.
2. Type of clutch used in optional, double disk, triple disk or
ram couplers are optional.
3. Drive line or transmission optional.
4. The centerline of the quick change will be on the center line
of the frame, with a tolerance of 1".
5. Open drive shafts or torque tubes only.
6. Open drive shafts must have 360 degree protection around
front yoke and universal joint for safety reasons.
7. All torque tubes to have restraining straps or loops around
front of tube for safety reasons.
E. ENGINES
1. Small block American make V-8 cast iron engines only are
permitted.
2. The maximum cube inch displacement allowed is 363 for
Chevrolet, 365 for Ford, 365 for Mopar.
3. Any stock or aftermarket intakes allowed.
4. No throttle bodies allowed. No fuel injection systems of any
type.
5. Must use only one Holley #4412 500cfm two barrel carburetors
only (IE: Barry Grant, Bolaws, Holley type, etc.) Must have two
butterflies. MUST PASS TRACK GAUGES.
Modifications allowed: a: choke plate may be removed.
b: Jets and power valves may be changed.
c: Billett metering blocks allowed
d: NO OTHER MODIFICATIONS TO INCREASE AIR OR FUEL FLOW.
e: Only straight type squirters are allowed. No spyder or mist
type squirters.
f: Screws in butterflies must extend minimum of .060" thru bar
(thread side).
Modifications to the carburetor or any of it's components, or
substitution of other than Holley parts without prior written
permission from EAST BAY RACEWAY PARK OFFICIALS will
cause the vehicle to be declared illegal.
6. Porting or polishing the inside or outside of the intake
manifold is not permitted. Matching of the ports within 1/2-inch
of the surface is allowed.
7. Heads must be steel. Porting polishing or grinding are not
permitted. Matching of the ports within 1/2 inch of the surface
is allowed. Grinding within 1/2-inch where the valve seats are
permitted. No titanium valves.
8. Kind of valve springs are optional.
9. Kind of rocker arms are optional.
10. No aluminum heads.
11. Only the flat tappet camshafts allowed.
12. No roller camshafts or mushroom tappet cams are permitted.
13. No roller lifters or mushroom lifters allowed.
14. Cam timing gears are optional.
15. Re-indexing of crank shaft is not permitted. Strokers or
destrokers are not allowed.
16. Only stock crankshafts allowed (cast or steel).
17. No lightweight billet cranks allowed.
18. Polishing, clearance and balancing of internal engine parts
is permitted. Knife edge creaks are not permitted.
19. No dry sump oil pumps allowed. (Wet sumps only.)
20. Manual fuel pumps or optional belt driven pumps only.
21. After market heads are limited to the following:
CHEV-BOWTIES
FORD-SVO / WINDSOR
MOPAR
DART
WEIAND
NOTE: FOR THE 2007 SEASON, THE HEADS MAY BE REQUIRED TO BE 23
DEGREES (+ OR- 1 DEGREE) FOR ALL MAKES.
22. All engines must P& G legal within 15 minutes of the end of
the racing event as per race track protest rules.
23. Any pistons are legal.
24. Any length STEEL rods are legal. Any manufacturer.
25. Any alteration or grinding of the manufacturers name or ID
on crank is not permitted.
26. Leaman-type front covers are not permitted.
27. Belt driven, aluminum water pumps or cast iron pumps only.
28. Any aftermarket racing oil pan allowed.
29. Alternators are optional.
30. Any type headers allowed.
31. Mufflers mandatory--track approved.
32. NO electronic, electrical or manual gauges of any type
allowed in cockpit or mounted on car except for oil or water
temperature, oil or fuel pressure, or tachometer.
33. All Electronics or MSD ignition systems or boxes are subject
to be traded out or sent to manufacturer for further inspection
at any time.
F. FUEL SYSTEMS.
1. Only plastic racing tanks or fuel cells are permitted.
Maximum 22 gallon fuel tanks. No electric fuel pumps.
2. Alcohol or gasoline is permitted, but no mixing. No fuel
additives except top oil to be added.
3. No use of nitrous oxide allowed.
4. All fuel systems to have a fuel shut-off between fuel tank
and fuel pump.
G. WHEELS AND TIRES
1. Steel or aluminum wheels only—16 inch maximum. No inner
liners. Bead locks optional.
2. Front wheels to be a maximum of 8 inches wide.
3. Carbon fiber wheel is O.K.
4. All tires must be approved by East Bay Raceway Park Tech;
Must be used as supplied by manufacturer.
Right rear tire: Mandatory F55
Left rear tire: 88, 90 or 92 casing /11.0-15 LSB D35 or D55
Front tires: 26.5 or 27.5/8.0-15 SCL A40, D40 or H40
There will be a 4 event burn off period for using up of old
tires. Beginning with 5th event, tire rule is mandatoryfor all.
After burn-off period, any new car coming in for first time will
be allowed to run with only F55 on right rear and D35 or D55 on
left rear on right rear for 1(one) event only, after that, they
will be required to be on proper tires on front as well.
5. No tire softeners; no soaking of tires; no preheating of
tires; no chemicals inside of tires except oxygen or nitrogen.
If found, minimum $500.00 fine, loss of all points accrued to
date and possible suspension. This could turn into EPC problem
if it continues.
H. WEIGHT
1. The minimum weight of the car and driver at the end of the
race must be 1700 lbs. with transmission/1700 lbs. without
transmission.
2. The first five finishers and any cars so designated by track
officials must go directly to the scales at the end of each
race. Failure to report to the scales as required will result in
a disqualification and forfeiture of all points and monies
earned for that race date.
3. No allowance for lost patrs (during course of race) in
determining the weight of the car.
4. No adding of weight to the car after the race has ended. Any
attempt will be an automatic disqualification.
I. SAFETY
1. All drivers to mandatory to wear an S.F.I. approved fire
suit, including neck brace, gloves and shoes.
2. All helmets to have a Snell approval of at least 2000 and a
lock-down face shield.
3. Arm restraints are MANDATORY; if restraints are released
during ANY race, you are automatically disqualified.
4. No mirrors on cars.
5. Five-point safety harness not older than three years of
manufacturers date on harness. (Belts stretch in accidents and
rollovers).
THESE RULES HAVE BEEN ACCEPTED AND APPROVED. IF IT'S NOT IN
THESE RULES IT IS NOT ALLOWED.
*East Bay Raceway Forms page*
RULE BOOK DISCLAIMER
The rules and /or regulations set forth herein are designed to
provide for the
orderly conduct of racing events and to establish minimum
acceptable
requirements for such events. These rules shall govern the
condition of all
events, and by participating in these events, all participants
are deemed to have
complied with these rules. No expressed or implied warranty of
safety
shall result from the publication of or compliance with these
rules and/or
regulations. They are intended as a guide for the conduct of the
sport and in
no way a guarantee against injury or death to a participant,
spectator, or
official.
The race director shall be empowered to permit reasonable and
appropriate
deviation from any of the specifications herein or impose any
further
restrictions that in his opinion do not alter the minimum
acceptable
requirements. No expressed or implied warranty of safety shall
results
from such alterations of specifications. Any interpretation or
deviation of
these rules is left to the discretion of the officials. Their
discretion is final.
On occasion when situations arise that are not covered by
written rules,
special rulings may be put into effect by the track officials.
Once such
rulings are acted upon, they may become an act of policy and
will be added to
the existing rules of procedures.
The Management of East Bay Raceway Park
THE MANDATORY MUFFLERS FOR ALL
CLASSES IS SCHOENFIELD #112535
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