| 2011 9,500lb and 10,000lb PRO-FARM RULES 1. REPLACEMENT BLOCKS up to 504cui or stock cui ARE 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. 9500lb TRACTORS ARE LIMITED TO ONE TURBO CHARGER WITH SMALL EXAUST MOUNTING BASE, MAXIMUM OF 3" SMOOTH BORE "GT40" OUT OF THE BOX OR 2..82" SLOTTED INDUCER. 10,200lb class may have a 3" slotted turbo charger. 4. THE 9,500LB CLASS WILL BE LIMITED TO 466 CID; THE 10,200LB CLASS WILL BE LIMITED TO 650 CID. BOTH CLASSES ARE ALLOWED A 1% 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. 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. 7. EXAUST PIPE MUST HAVE TWO 5/16" BOLTS MOUNTED 90 DEGREES TO EACH OTHER WITHIN 1 INCH, NO CURVED EXAUST PIPES ALLOWED OR RAIN CAPS. 8. 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 AA MINIMUM 3/8" GRADE 5 BOLT. 9. 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. 10. HOMEMADE FRONT ENDS ALLOWED, THEY WILL BE SUBJECT TO IFPA BOARD APPROVAL. 11. ALL TRACTORS WILL HAVE FENDERS, THEY MUST COVER AT LEAST 1/2 OF THE TOP OF THE TIRE. 12. ALL TRACTORS MUST HAVE A " DEAD MANS THROTTLE". 13. ALL TRACTORS MUST HAVE WELD ON HUBS, NO FACTORY OR AFTERMARKET HUBS. 14. FACTORY "ROPS" OF AN BOARD APPROVED ROLL CAGE IS RECOMENDED. 15. Water injection will be allowed. (water must freeze and may be tested at anytime) |