Drawbars
- Drawbars shall meet the following: drawbar to be a minimum of 2 square inches total steel material at any point. This includes the area of the pin with the pin removed. The pin will be a minimum of 7/8 inch. Drawbar must be equipped with a steel hitching device not more than 1.5 x 1.5 square, (or 1.5 round), and with an oblong shaped hole 3.75 inches long and 3 inches wide. No drawbar support tubes attached above the centerline of the rear axle, unless using the stock drawbar support for that make and model. Absolutely no drawbar supports designed to pull only from, or to be attached only to a point above the centerline of the rear axle.
- Drawbar maximum height 20”
- Drawbar to be no shorter than 18” from center of axle.
Engines
- Each competing vehicle must have a working RPM pick up on their vehicle. The pick -up must be wired uninterrupted to a common 3 prong household electrical receptacle that is to be mounted on the back of the vehicle directly above the drawbar area. The pick- up MUST be in working order during competition. If a competitor’s pick up does not work at an event, a competitor may be hand tached immediately after leaving the track after a competitive pass. A competitor must be tached trackside. If a competing vehicle leaves the track area before being tached, the vehicle will be disqualified.
- If a competitor’s pick up does not work at an event, they have until the next event to repair the problem. A competitor will not will not be eligible to compete 2 event entries in a row with- out a working pick up.
- Engine must be stock block for that make or model.
- Engines are limited to agricultural produced intake and exhaust manifolds.
- No intercoolers allowed. OEM agricultural intercooler manifolds are allowed without any cooling assistance hooked up.
- Tractors are limited to 505 cubic inches unless make and model of tractor is offered with larger displacement from the factory, plus 1%.
- Factory produced vehicles greater than 505 cubic inches are limited to the factory offered displacement of the vehicle. (i.e. JD 6030 is limited to 531 cubic inches) (Plus 1%)
- Engine RPM is limited to 2750 maximum.
- Farm Stock tractors are limited to a single turbocharger with a 2.330” inducer bore restriction within 2” of the face of the intake wheel.
- No air-cooling agents.
- Farm Stock tractors are limited to stock appearing injection pumps with factory dimensions for make and model of vehicle being entered. Stock appearing pump may be replaced with P7100 pump so long as the tractor has no ability to shift while under power or motion (IE. If rotary pump is replaced with P7100 on an IH the torque amplifier must be rendered inoperable and checked by tech representative of class.).
- No aluminum or aftermarket heads are allowed
- Engine must be stock appearing for that make and model of tractor.
Chassis
- Tractors are to be stock appearing. This is a Farm Stock class and should be presented as such.
- Engine, transmission, and rear end housing must bolt together in original location with no adapter plate. Any variance of this will require board approval.
- Must run OEM rear axle housings for that that make and model of tractor. (including Planetary axle)
- Fenders are required.
- Chrome or Aluminum wheels allowed on front only.
Exhaust Systems
- Exhaust must exit vertically with no rain caps.
- Turbocharged engines must have two 3/8-inch grade 5 bolts in either (or both) vertical portion, or horizontal portion of exhaust pipes. Bolts are to be installed 90 degrees of each other and within one inch of each other.
Fuel and Fuel Containers
- No nitrous oxide, oxygen or nitro methane.
- Tractors must run on diesel.
- No water or alcohol injection.
Kill Switches
- All diesel competing vehicles must have an air shut-off and fuel shut off in working at order at all times.
- On a diesel tractor, the kill cable must activate the air shut-off and fuel shut off required on a diesel engine. A cable may be used for this purpose, but must have positive type enclosed cable for the air shut-off. The cap must have a spring loaded closing mechanism. It is recommended that a gasket / seal arrangement be used to more effectively shut off air flow. Door or rain cap air shut offs (no “butterfly” type) will be required on all self ignition engines with a separate control for the driver. Control for driver not to be the same as for the sled. No electrical operated air shut-offs allowed.
- Track officials and/or tech inspectors have the option of checking kill switches as they feel is adequate at any event. It is recommended that all kill switches be check on all competing vehicles at every event.
- All kill switches must be mounted independent of drawbar and/or wheelie bars / stabilizer bars.
- The kill switch must be located in the rear center (maximum of 6 inches off center in any direction), approx four feet above the hook point.
- The breakaway kill switches must have attached to them a minimum of a 2-inch diameter ring, with a minimum 1/8 inch cross-sectional thickness. The cable from the sled will be attached to this ring.
- Portion of the kill switch and mounting bracket(s) must be able to withstand 32 pounds of pull per switch when pulled independently or collectively.
- If vehicle has kill switch or shut-off located in a legal position, and during the pull it is pulled and the nylon strap is broken, and the presiding judge inspects and finds switch capable of operating properly under normal conditions, vehicle will be allowed to re-pull immediately or drop six positions. Decision to drop must be made before vehicle leaves the track. It is the puller’s responsibility to see that the official checks the switch before leaving the track.
- Diesel engines must have a fuel shut-off valve control within easy reach of driver (your normal fuel shut-off on diesel pump). All diesel engines must be equipped with an emergency shutdown air shut-off at the air intake, which can be utilized from the tractor seat.
Stabilizer Bars
- Stabilizer bars are required. The drawbar assembly will not in any way be attached to the stabilizer bar assembly.
- The stabilizer bar must extend a minimum of 32 inches behind a line drawn from the center of the wheel to the ground. Pad must not be more than 10 inches off the ground at 32-inch point and be measured during hitch check before competition. The stabilizer pad must be a minimum of 5 inches square with a minimum of 20 inches allowed from outside of one pad to the other. No crossbars between stabilizer bars allowed behind point of hook.
Safety
- Any engine driven fan must be shrouded 360 degrees.
- If an Illiana Pullers Association track official or tech official feels a vehicle is unsafe, they have the right not to allow vehicle to pull. Track official or tech official has the right to bar a competition vehicle from competing if he or she believes that the vehicle has a potential safety problem.
- A SFI approved Flywheel and clutch assembly must be used. A scatter blanket is required
- All pulling vehicles must be equipped with a minimum of 2 lb Halon type of 2½ lb dry- powder type fire extinguisher, full charged with a gauge, in working condition and convenient to the operator.
- All tractors must either run safety tie bars mounted to rear axle housing with at least four axle housing bolts and extending forward to flywheel area and fastened to side of block or main frame with at least two 5/8 inch bolts, or a one piece frame extending from front of tractor to rear axle housing mounting bolts. Tie bars or frame must be sufficient strength to support weight of tractor with the bolts removed.
- OSHA approved ROPS and seat belts are required. ROPS must meet factory weight of tractor.
- Bell housing blanket must meet the following construction criteria; 17 inches wide and long enough to wrap around the bell housing with at least 6 inches overlap, secured with six 2 inch wide nylon web straps with a steel D-ring on one end and sewn the length of the blanket (except for the overlap area) and long enough to pass back through steel D-ring and be tied in a saddle cinch along with four 2 inch nylon web retaining straps each at the front and back of the blanket.
- Bell housing blanket straps are to be fastened forward and rear of the clutch / flywheel assembly. All straps must be securely fastened and the blanket must be secure against the rear face of the engine block.
- If a roll cage is on the tractor driver must wear all safety gear. (Firesuit, helmet, neck collar, head sock, leather boots or fireproof shoes)
Tires
- Maximum size is 20.8-38 or 18.4-42. No duals, chains or four-wheel drives.
- Cut tires are not allowed.
Weights
- Maximum weight for tractor and driver is 12,500 lbs.
- Weights must be safely secured and must not extend rearward beyond rear tires. No weight frame may extend more than 24″ beyond the furthest point of the front of the tractor.
All General Competition rules apply (applicable to class)