305 WINGED SPRINT CAR RULES/2014
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MUFFLERS AND RACEIVERS ARE MANDATORY
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
PUBLICATIONS OF OR COMPLIANCE WITH THESE RULES AND OR REGULATIONS.
They are intended as a guide for the conduct of the sport and are in
no way a guarantee against injury or death to a participant,
spectator, or official.
director shall be empowered to permit reasonable and appropriate
deviation from any of the specifications herein or impose any
further restrictions that in his/her opinion does not alter the
minimum acceptable requirements.
NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH
ALTERATION OF SPECIFICATIONS. Any interpretation or deviation of
these rules is left to the discretion of the officials. Their
decision is final.
The Management of __________Riverside International
1.1 ASCS car specification
rules apply, except specific rules below.
2.1 RIS general safety rules apply.
2.2 All drivers new to competing in full size sprint cars will be
required to run an identifying bright orange stripe on the rear of
their car for their entire first season
Section 3: Bodies:
3.1 Top wings meeting ASCS specifications are mandatory. No
hydraulic sliders or any cockpit adjustable wing mechanisms allowed.
Front wings are optional and must meet ASCS rules.
Section 4: Wheels/Tires:
4.1 Right rear tire must durometer 38 minimum at any time
4.2 Maximum right rear wheel widths is 18-inches, maximum left rear
wheel width is 15 inches.
4.3 Hoosier Racing Tires on all 4 corners.
4.4 Left front is the only tire you can run flat.
5.1 Safety strap must be affixed to drag link.
6.1 Gear rule – Open gear rule. Any gear is acceptable.
7.1 Methanol or Ethanol only. No Nitro or additives allowed.
7.2 Fuel subject to be checked anytime by track officials. Fuel
samples may be taken for analysis and winnings may be withheld until
results are known. Penalty for fuel infractions will result in
forfeiture of all points and winnings won during event detected.
7.3 Fuel cell must be securely mounted with bladder mandatory for
7.4 Tanks used for qualifying heats must remain for all events.
7.5 ASCS legal Injectors or carburetor allowed
7.6 Cam drive fuel pump only
General Engine Rules (In addition to engine specifications named
herein, an ASCS 305 or a RACESAVER legal sealed engine will be
8.1 316 max cubic inch limit/ 3.48 stroke Chevy; 3.000 stroke Ford
8.2 No titanium or ceramics will be permitted.
9.1 May be cast iron or aluminum, stock OEM style, must bolt in the
10.1 OEM production cast iron 305 Chevrolet or 302 Ford only (no
10.2 No repositioning, boring, or bushing of cam or lifter bores. .
Rebushing/repair of up to 4 lifter bores allowed in the interest of
saving the engine blocks and to keep costs down.
10.3 Four bolt main caps (OEM or aftermarket) are allowed.
11.1 Any OEM production or aftermarket brand is acceptable. Cast
iron or steel. Minimum crankshaft weight is 48.00 pounds (1%
tolerance = 47.52# absolute minimum). The stroke is limited to
3.480” for Chevy & 3.000” for Ford with a tolerance of +/- 0.010”.
Balancing is permitted but no “Knifing”
12: Connecting Rods:
12.1 OEM rods with stock length of 5.7” Chevy or 5.090 Ford
12.2 Any aftermarket “I” beam “stock replacement” style rod with a
max length of 5.7”.Chevy or 5.090 Ford
12.3 No aluminum rods allowed.
12.4 No billet steel rods allowed.
Note: Minimum of a 1” round inspection hole in oil pan is strongly
recommended for visual inspection of crank and rods; Location is
recommended to be towards the front half of the engine, as high as
possible. Otherwise, engine oil pan is subject to removal.
13.1 Any flat top two or four valve relief allowed.
13.2 Max “0” deck height (Piston may not protrude above deck
13.3 Any piston rings.
Valve Train Specs
13.5 Timing sets - Chain only. No belt or gear drives allowed.
13.6 Valve springs straight wound only max seat pressure 120 lbs.
must have 5 full coils.
13.7 Any flat tappet lifter with max diameter of .842 for Chevy and
.875 for Ford. NO roller or mushroom style lifters allowed.
13.8 Any 5/16 diameter pushrod.
13.9 Any steel 7 or 10 degree valve spring retainer allowed.
13.10 Stamped steel or roller rocker arms allowed. No shaft systems,
rev kits, or valve stabilizers allowed. (Stud girdles allowed.)
14: Oiling System:
14.1 Wet Sump Only (No Dry Sump allowed).
15.1 Flat Tappet only/No Rollers. No “hard face” cams
15.2 Chevy must utilize stock firing order (18436572); Ford must
utilize stock firing order (15426378) or (13726548)
16.1 2.02 intake/1.60 exhaust max head diameter allowed.
16.2 11/32 valve stem diameter only. NO titanium valves.
17: Cylinder heads:
17.1 Any OEM or aftermarket cast iron 23 degree cylinder head with a
maximum intake runner of 200cc and a minimum combustion chamber of
64cc (Chevy) and 58cc (Ford)
17.2 Tolerance: Applicable to all heads (OEM & Aftermarket) the
absolute maximum on any single intake port is 206cc. The absolute
minimum combustion chamber volume is 62.5cc for the Chevy and 56.5cc
for the Ford.
17.3 No modifications allowed to the port, bowl, or chamber area.
No grinding, polishing, welding, acid or caustic work, shot peening,
glass beading, coating, or other process that will alter the
machined surfaces or natural sand cast finish. Heads must be
untouched. Comparisons will be made to known legal heads if
questions arise. The only exception allowed to this rule will be
when media blasting has been used for cleaning purposes only. This
determination will be made by the tech inspector(s). Any
questionable parts may be presented to track management for
inspection prior to assembly to avoid possible issues later.
18.1 Cars must weigh 1,500 pounds after race with the driver in the
car and no fuel added.
18.2 No bolt-on weight allowed.
19: Protest/Post-Race Inspection
19.1 $600 for the top half of engine. $900 for complete engine.
19.2 Track does NOT pay for labor or materials associated with
teardown for inspections.
19.3 Protest must be submitted within 10 minutes of feature
completion (drop of checkered flag) for that class and before the
top 5 cars and drivers are released from the scale area. Car
protested has right to counter protest. Only top 5 and on the lead
lap may protest.
19.4 Can OR Can’t rule: Do not try to read between the lines in the
rule book. Just because the book doesn’t say you can’t, don’t assume
you can. Any modifications not specifically outlined here are at the
Tech Departments discretion. All final decisions will be made by the
tech Officials. Ask first before you assume something is legal. Any
violation of these rules will result in disqualification of the car
and points for that night.
19.5 The protest area will be designated by the track officials and
secured by track officials prior to tech procedure beginning.
19.6 The portion of the engine being protested will be fully
dismantled for inspection. All measurements and inspections will be
noted by the Tech and Track official. The inspection does not stop
at the first infraction.
19.7 No more than two people from each team (the Protestor and the
Protested) will be permitted into the tech area during the entire
tech procedure. Team representatives should be designated prior to
tech procedure beginning and will not change during procedure.
19.8 If engine is found
illegal or driver/owner refuses the inspection, the driver will be
disqualified, will lose purse for the night, will lose points for
season to date and will be suspended from participating in the
running of the next 4 class events (Only completed events for this
class will be counted.) Suspended driver cannot participate in any
event for this class at riverside speedway during the suspension
period including race specials that include this class. If a
driver/owner refuses to the inspection before the car is allowed to
compete again the car/engine will be inspected (inspection may
include an engine teardown)
19.9 Once a protest is submitted and teardown begins it is intended
that the Protested party will follow through with committed teardown
until complete. If at any time after teardown has started the
Protested party decides to stop inspections whether any infractions
have been found or not, the engine will be found illegal, the driver
will be disqualified, will lose purse for the night, will lose
points for season to date and will be suspended from participating
in the running of the next 6 class events (Only completed events for
this class will be counted.). Suspended driver cannot participate in
any event for this class at riverside speedway during the suspension
period including race specials that include this class.