| 2012 10,500LB MODIFIED-FARM RULES 1. REPLACEMENT BLOCKS with a maximum of 504cid will be ALLOWED PROVIDED THEY BOLT TO THE ORIGINAL FACTORY CAST CLUTCH BELL HOUSING WITH ANY MODIFICATION OR USE OF ADAPTER PLATES. IF THE FACTORY USES AN ADAPTER PLATE, YOU MAY NOT MODIFY IT IN ANY WAY, THE WILL BE THE SAME MANUFACTURER AS THE CRANK CASE. NO AFTER MARKET HEADS ALLOWED. IN LINE PUMPS CAN BE USED UP TO AND INCLUDING "P" SERIES INJECTION PUMP, NUMBER OF CYLINDERS MUST CONFORM TO TRACTOR CHASSIS BEING ENTERED. 2. A MAXIMUM LIMIT OF 3,000 RPM WILL BE ALLOWED. exception to tractors under 410cui will be allowed 3500 rpm 3. TRACTORS ARE LIMITED TO ONE TURBO CHARGER WITH SMALL EXHAUST MOUNTING BASE, MAXIMUM OF 3" SMOOTH BORE "GT40" OUT OF THE BOX OR 2..82" SLOTTED INDUCER. 4. CLASS IS ALLOWED A 1% cid OVERAGE TOLERANCE. 5. A MAXIMUM TIRE SIZE OF 18.4-42 OR 20.38, RADIAL OR BIAS PLY, ON ANY WIDTH RIM, CUT TIRES ARE ALLOWED. 6. A MAXIMUM SLED SPEED OF 15 MPH FROM THE 110' MARK TO THE FINISH WILL BE ALLOWED, EXCESS SPEED WILL RESULT IN DISQUALIFICATION, IF DISQUALIFICATION RESULTS PULL WILL BE ALLOWED TO CONTINUE PROVIDED AN ATTEMPT TO OBEY THE SPEED LIMIT HAS BEEN MADE, IF NO ATTEMPT HAS BEEN MADE HOOK WILL BE TERMINATED. 7. HOOK POINT IS TO BE A MINIMUM IF 18 INCHES BEHIND CENTER OF REAR AXLE AND A MINIMUM OF 20 INCHES IN HEIGHT, TO BE RIGID IN ALL DIRECTIONS, HITCHING EYE TO BE A MINIMUM OF 3/4" IN THICKNESS WITH A OPENING OF 3" WIDE BY 3 1/2" DEEP. 8. EXHAUST PIPE MUST HAVE TWO 5/16" BOLTS MOUNTED 90 DEGREES TO EACH OTHER WITHIN 1 INCH, NO CURVED EXHAUST PIPES ALLOWED OR RAIN CAPS. 9. TRACTORS USING ROLLER CHAIN COUPLERS TO CONNECT THE ENGINE TO THE TRANSMISSION MUST ENCLOSE SAID COUPLER 360 DEGREES WITH 5/16" MINIMUM THICKNESS STEEL, INSIDE DIAMETER NOT TO EXCEED 2 INCHES MORE THAN OUTSIDE DIAMETER OF COUPLER, TO BE FASTENED EVERY 6 INCHES WITH A MINIMUM 3/8" GRADE 5 BOLT. 10. A MAXIMUM DIMENSION OF 13' FROM THE CENTER OF THE REAR AXLE TO THE FURTHEST PART OF THE FRONT INCLUDING WEIGHTS WILL BE ALLOWED. FRONT END SHALL NOT EXCEED THE FRONT OF FACTORY CAST LENGTH. 11. HOMEMADE FRONT ENDS ALLOWED, THEY WILL BE SUBJECT TO IFPA BOARD APPROVAL. 12. ALL TRACTORS WILL HAVE FENDERS, THEY MUST COVER AT LEAST 1/2 OF THE TOP OF THE TIRE. 13. ALL TRACTORS MUST HAVE A " DEAD MANS THROTTLE". |