IMCA OLD TIMERS                             
2010 Race Rules
approved 12-6-2009
 

THE FOLLOWING RULES ARE THE IMCA OLD TIMERS AND MAY BE  SUPERCEDED BY THE HOSTING TRACK SAFTEY RULES.

 

As the IMCA old Timers grows and expands every effort is being made to revise the rules to stabilize car owner costs and ensure that everyone is competitive.  The 2010 rules are designed to protect owners from getting too eager to outspend their other competitors, and to maintain overall competition.  The Quality and professionalism of all of our club cars is an absolute must.  The club needs to maintain rigid and tough standards so that the IMCA OLD TIMERS can attract additional club members who have been driven out of Vintage Racing because of the high cost of tires, exotic chassis and expensive engines.

 

If our club strives to keep all cars on a level playing field, participants will have a great time and generate memories to share with fellow club members, fans and family.  These rules provide owners who want to purchase Vintage Cars or who already have a Vintage Car an equal chance to win a race and continue to be competitive.  

            All cars must be retired from active competition for at least three (3) years.

            We would like all cars to have a “History”, or be a copy of a real car.

            All drivers and/or owners must sign an affidavit stating that the car is not/will not

            be run at a weekly show during the IMCA Old Timers Schedule.  If caught they  

           will not be able to run with the IMCA Old Timers schedule for the rest of the year.

            No one should contact the Owner/Promoter without first contacting the IMCA

            OLDTIMERS Race Director, and/or the President.   

1. TQ’s;  No Change in rules.
2. MIDGETS;  No Change except that “Down Tubes” are permitted.
3. EARLY SPRINTS;  Inline 6’s, Straight 8’s and Flatheads.   No Change except that “Down Tubes” are permitted.
4. LATE SPRINTS;  Overhead valve V 8’s.  No Change except that  “Down Tubes” are permitted.
5. SUPER MODIFIEDS;  Inline 6’s, Straight 8’s and Flathead V8’s.
6. SUPER MODIFIEDS: Overhead Valve V8’s.
7. COUPES AND SEDANS;  Inline 6’s, Straight 8’s, and Flathead V8’s.
8. COUPES AND SEDANS;  Overhead valve V8’s.
9. STOCK CARS; --  25 Years old or older.

SAFETY:  Hosting Track rules take precedence over IMCA safety rules.

1. All cars must be inspected the first time that they run IMCA.  Then it must be inspected after a major accident.
2. Seat Belts must be bolted securely to the floor or it is recommended that they be bolted to the cage.
3. HELMETS must be inspected at the beginning of each year.  If Helmets are not cracked and the lining inside is not torn or damaged in any way and the Inspector OK’s it, the Helmets can be used.  BUT, the Helmet must be re-inspected after an accident by the Safety Inspector.  THIS RULE IS SUBJECT TO HOSTING TRACK SAFETY INSPECTORS DISCRECTION.
4. No Motor Cycle Helmets allowed.
5. SEAT BELTS must be inspected at the beginning of each year.  The Belt can be used if they are not ROTTED OR FRAYED, The Belts Belt must be re-inspected after each accident.
6. No Seat Belts or Shoulder Harnesses may be older than 5 years old.
7. Stock Cars must have a window net.  Arm restraints in Open Wheel Cars are mandatory.
8. Fire Suits are Mandatory in all classes of cars.  Racing Shoes, and Gloves are recommended.
9. A Master Electrical Switch shall be in the car, located in such a manner that it is accessible from the outside of the car, near an outside window opening.
10. The Fuel Cell shall have a “Roll Over Valve”.  This is mandatory. 

 

STOCK CARS

1. Sheet metal must be stock appearing.  No flat sides.  No flat roofs.  No wings.
2. Convertibles are allowed.
3. Rear fascia of body between tail light area must be closed in

CHASSIS

1. Any stock production frame and/or chassis, 1985 and older is eligible.
2. Rear suspension – No Bird Cages, No Rear Steer of any type.  To be blunt, this will keep Late Model owners/drivers from installing an old body on a new latest design chassis and out running the field.
3. Three (3) link rear suspension with or without upper torque dampenener spring is legal.
4. Leaf Spring rear suspension is legal.
5. Stock G.M. type 4-link rear suspension is legal.
6. Any adjustable lower trailing arms must remain parallel with each other while car is at rest – No rear steer effect. 
7. 4 inch Engine set back maximum allowed, and is measured from the centerline of upper left side spindle ball joint to centerline of number one (1) cylinder spark plug hole
8. New construction frames must be built with straight up perimeter frames rails.  No left side biased chassis on new cars.
9. Existing, or restored chassis can utilize fabricated front stub with coil over springs, rack and pinion steering and/or left side frame bias only if the car was originally built with them.
10. Three (3) .750” diameter bars required in front of driver area, in between dash bar and roof hoop of cage for driver protection if a window screen is used instead of a windshield.
11. Frame eligibility subject to inspection by club official mandatory.
12. Full firewalls required both front and rear of driver cockpit

BRAKES

A.    Four (4) wheel disc brakes recommended.

B.    Dual Master Cylinder mandatory, either stock type or Two (2) independent after market units.

C.    On Board bias adjusters are legal.

D.    Brake lines must be protected from Header heat, and open exposure to front and rear tires.

 

BATTERY

 

A.          Battery must be securely mounted in rigid battery box or tray outside of the 

              Driver’s cockpit.

B.     Plastic marine battery boxes, no matter how they are mounted to car are not allowed.   

 

ENGINES

A.     No aluminum block motors.

B.     One (1) four (4) barrel carburetor only.

C.     Two (2) throttle return springs mandatory, either oppositely wound concentric or individual springs at the top and bottom of carburetor throttle shaft bracket.  Spring equipped throttle cable is NOT considered a return spring.

D.     Gasoline is the only fuel allowed.

 

FUEL DELIVERY

A.     Fuel Cell mandatory.  It must be securely mounted between rear frame rails

with rear protection bars or hoops.

B.     Fuel Lines

1.      Rigid fuel line recommended from Fuel Cell to Firewall.

2.      Flex lines can be used only if it is braided, or passes thru rigid tubing.  (i.e. conduit) thru the chassis.

3.      Fuel lines must be routed away from headers heat, and must be protected from exposure to front and rear tires.

C.     Fuel Pumps

1.      Mechanical engine mounted pump recommended.

2.      Electric pump can be used only if equipped with automatic level sensing shutoff switch.  Holley Safety Pressure switch P/N 12-810 recommended).

 

 TIRES AND RIMS                

A.     Any Racing tire.  (This will keep the cost down and allow one to run a variety of

Tires, either new or used.

B.     No 14inch tires.

C.     Rims no larger than 12 inches.

 

GENERAL EVENT INFORMATION

 

The winner of any Heat Race, Trophy Dash or Feature Race at one event will automatically start in the rear of the field at the very next race.  The very next race means the same race day if there are more than one race to be run that day/night, or may be the next event in the future.  This will give more competitors a chance at carrying the checkered flag and sharing in the enjoyment of a successful racing season.  The overall philosophy of the IMCA OLD TIMERS is to maintain close competition, reduce expenses, avoid “High Tech” cars of modern configuration, and most of all enjoy the racing of yesteryear.