9,000# Pro Farm (Updated 2024)

BODY:

1. Stock appearing -sheet metal, transmission, and read ends

2. Tube frames and rack and pinion steering are allowed (subject to SCWTP Tech and Board inspection and approval) Frames must be wide front with front tires riding in the tracks of the rear tires. NO NARROW FRONTS OR RUNNING GEAR FRONT ENDS

3. Tie Bar - ties bars must extend from the frame (in front of clutch housing/flywheel) to the rear axle housing .

4. Fenders - All tractors must have fenders that can support the weight of the driver. Top of the fender must extend no less than 6 inches over the top of the tires.

5. Clutch - Clutch must be SFI approved. Certification papers required.

6. Clutch Blanket - Tractors must be equipped with a minimum of 17 inch wide, 6 strap SFI 4.2 clutch blanket.

7. Wheelie Bars- Wheelie Bars are required (No Wheels allowed). The wheelie bars cannot be bolted, welded, etc. to the drawbar in any way and must extend a minimum of 32 inches rearward from the center of the rear axle or a minimum of 2 inches from the rear radius of the tire. The skid pad cannot be more than 10 inches off of the ground and be a minimum of 5 inch X 5 inch square. A minimum of 20 inches is allowed between the 2 skid pads. No cross bars are allowed on the stabilizer bars behind the point of hook. Wheelie bars will be to able to support the weight of the tractor and withstand severe impact of sled.

8. Chassis - Maximum of 114 inch wheelbase unless originally produced with a longer wheelbase at which point the wheelbase will remain stock. Maximum length of 13 feet from center of rear axle to forward-most point of vehicle excluding the front hitch.

9. Brakes- All tractors must have working rear brakes capable of sliding the rear tires.

10. Roll cages equipped with a 5 point safety harness, ROPS bar equipped with a seat belt. 5 point harness and seat belt to be mounted using different bolts then bolts used to mount the seat.

11. Fire Extinguisher - Vehicle must be equipped with a minimum of a 2.5 lb dry type or a 2 lb Haylon type fire extinguisher that must be located within easy reach of the operator. Fire extinguisher must be fully charged.

12. Safety Shields - All tractors must have a deflection shield on both sides of the engine, and cover the entire engine, either aluminum or steel not less than 0.060 inch thick. There must be a fire wall that separates the operator from the engine compartment with no holes other than those used for controls to pass through. In that instance, each hole is not to have more than one inch clearance around the item passing through the fire wall. .060 inch thick steel or .120 of an inch aluminum must run between the frames and under the harmonic balancer to prevent loss of harmonic balancer from the tractor.

13. Floorboard - All vehicles must be equipped with a floorboard.

14. Neutral Safety Switch required. VEHICLES MUST NOT START IN GEAR!!!!!!!!!

15. Personal Safety Equipment - Driver must wear a helmet. Driver must wear a fire suit jacket and pants, SFI 3.2A-1 minimum. Driver must wear gloves, SFI 3.3-1 minimum. NO SHORTS while pulling

ENGINE:

1. 470 Cubic Inch MAXIMUM limit +/- 1% testing variance

2. Block - factory OEM block or OEM replacement blocks. NO DECK PLATES All tractors will be pump tested for displacement and then the oil pan will be tagged and sealed by a SCWTP tech official or Board member, if incomplete before the first pull, it must be completed before any prize money or points are awarded. All vehicles must comply with Organization

3. Manifolds - OEM stock block, head, intake manifold & exhaust manifold must be used for make and model of vehicle being entered. No aftermarket components allowed. NO INTERCOOLERS

4. Injection pump - Bosch P7100 or P3000 series pump NO P8600 PUMPs running 1 plunger per cylinder

5. Turbo - single STOCK GARRETT GT4202 ONLY. No modifications allowed, must run factory Garrett exhaust housings. Turbo to be sealed by a SCWTP approved 3rd Party. (Any questions contact your class reps or a board member) turbo must be sealed/teched by first hook of season.

6. 3,500 rpm max limit, with 1 spike of less than 1 second, as monitored by a data recoding device using an ISSPRO #019R8906 magnetic pickup attached to the front engine balancer. The lead from the pickup to the rear of the vehicle is to be made of 14-16 gauge wire attached to a 110V, 3 prong female electrical outlet. The 2 wires from the pickup need to be attached to the 2 main spades, not the ground spade, of the electrical outlet. This outlet receptacle needs to be mounted next to the rear mounted air shutoff cable. Wire must be one (1) continuous wire outside the side rails and visible. NO SPLICES. If tractor spikes RPMs it will result in a DQ for that hook.

7. Water injection is allowed with lubricant. Water must be easily accessible for teching. Teching will be done with a refractometer using the “BRIX” scale. Any water above a 4.5 on the BRIX scale will be sampled and taken for a Freeze test. Violations will result in a DQ.

8. Fuel - Any DIESEL fuel is allowed, no alcohol, propane or nitrous oxide injections

9. Data loggers are allowed, traction control devices are prohibited

10. Engine Safety –

a. 3 way dump valve required and to be plumbed into the fuel system upstream of the injection inlet and operable from the operators seat via pull cable.

b. Air Shutoffs must prevent engine from building boost when closed/tripped. Cable operated and spring loaded to the closed/tripped position. Shutoff must be operable from the rear of the tractor and from the operator's seat. Cable with 2 inch ring located on the back of the tractor to be mounted approximately 4 feet above the point of hook and within 6 inches of the center of the vehicle and MOUNTED IN PLAIN VIEW. Air shut offs will be teched before first hook

c. Throttle lever must function so the pushing the throttle away from the operator engine RPMs increase and be set up as a “dead man” throttle that when pushed to wide open and released it will return to idle the idle position.

d. Exhaust must have two 3/8 of an inch bolts, no less the Grade 5, positioned in the exhaust tube as close to the exhaust housing as possible being in an “X” pattern with bolts being within 1 inch of the other bolts. Exhaust must exit straight to the sky. No rain caps

e. No belt operated engine fans, all fans must be electric

f. No combustible or pressurized canisters allowed on tractor.

HITCH:

1. Drawbar must be a minimum of 18 inches behind center line of rear axle, a maximum of 20 inches in height, and be ridged in all directions. Hitching eye to be a minimum of 1 inch thick with a 3 inch by 3.5 inch inside diameter hole.

2. Wheelie bars and Tie bars will not be mounted, bolted, welded to the hitch

3. No 3rd link hitch support

TIRES:

1. 20.8-38, 20.8-42 or 18.4-42 Cut tires allowed.

2. 9 or 10 bolt pressed steel wheels allowed (subject to SCWTP board approval) or 9 bolts aluminum rims

3. Hubs- Weld on hubs allowed (1” thick), Wedge lock style hubs are allowed, U-Clamp style hubs allowed only if they are 3 bolt

WEIGHT:

1. 9000# max weight limit (if running UNCUT or TOP CUT Ag tires an extra 500# will be granted to the tractor)

2. All tractors will cross the scale prior to hooking to the sled before every hook

“Open Hood Policy”, If there is a question about legality of a tractor, an individual can inspect another individual in the class. In return that individual can inspect the accuser’s tractor as well. Must have both class reps and SCWTP Board member present.

· Performance violations (i.e. water, cubic inch, weight, or turbo)

First Offense: points and $250 fine

Second Offense: points and $300 fine

Third Offense: points and $350 and forfeit rest of season

(Fines MUST be paid before next hook)

ALL SAFETY RULES SUBJECT TO SCWTP TECH AND BOARD APPROVAL

10,500# ALTERED FARM (Updated 2025)

Body/Chassis-

1. Stock appearing -sheet metal, transmission, and read ends

3. Tie Bar - ties bars must extend from the frame (in front of clutch housing/flywheel) to the rear axle housing

4. Fenders - All tractors must have fenders that can support the weight of the driver. Top of the fender must extend no less than 6 inches over the top of the tires.

5. Clutch - Clutch must be SFI approved. Certification papers required.

6. Clutch Blanket - Tractors must be equipped with a minimum of 17 inch wide, 6 strap SFI 4.2 clutch blanket.

7. Transmission - the use of a “powershift” (i.e TA, Quad Range, Over/Direct/Under, ect.) is allowed to be used while pulling the tractor. IH Tractors must run an electric shift for the TA.

8. Wheelie Bars- Wheelie Bars are required (No Wheels allowed). The wheelie bars cannot be bolted, welded, etc. to the drawbar in any way and must extend a minimum of 32 inches rearward from the center of the rear axle or a minimum of 2 inches from the rear radius of the tire. The skid pad cannot be more than 10 inches off of the ground and be a minimum of 5 inch X 5 inch square. A minimum of 20 inches is allowed between the 2 skid pads. No cross bars are allowed on the stabilizer bars behind the point of hook. Wheelie bars will be able to support the weight of the tractor and withstand severe impact of sled.

9. Chassis - Maximum of 114 inch wheelbase unless originally produced with a longer wheelbase at which point the wheelbase will remain stock. Maximum length of 13 feet from center of rear axle to forward-most point of vehicle excluding the front hitch.

10. Brakes- All tractors must have working rear brakes capable of sliding the rear tires.

11. Roll cages equipped with a 5 point safety harness, ROPS bar equipped with a seat belt. 5 point harness and seat belt to be mounted using different bolts then bolts used to mount the seat.

12. Fire Extinguisher - Vehicle must be equipped with a minimum of a 2.5 lb dry type or a 2lb Haylon type fire extinguisher that must be located within easy reach of the operator. Fire extinguisher must be fully charged.

13. Safety Shields - All tractors must have a deflection shield on both sides of the engine, and cover the entire engine, either aluminum or steel not less than 0.060 inch thick. .060 inch thick steel or .120 of an inch aluminum must run between the frames and under the harmonic balancer to prevent loss of harmonic balancer from the tractor.

14. Floorboard - All vehicles must be equipped with a floorboard.

15. Neutral Safety Switch required. VEHICLES MUST NOT START IN GEAR!!!!!!!!!

16. Personal Safety Equipment - Drivers must wear a helmet. Drivers must wear a fire suit jacket and pants, SFI 3.2A-1 minimum. NO SHORTS while pulling

17. Battery disconnect switch must be installed. Switch must be placed on the tractor in an area easily accessible for any persons on the track or in the pits so they can turn the switch to OFF in case of emergency.

Engine-

1. Under 470 ci may alter bore and stroke to get to 470 ci, 471 to 505 must retain factory bore and stroke, Exceptions: Massey Furguson limited to 540 ci, Cockshutt, Oliver, and White 585 ci. Displacement will be checked prior to 2nd hook of the season unless the seal is still intact/unaltered from the previous season. Until the seal is installed, no points, no payout. Day hook tractors without seal may pull exhibition with the class after paying the day hook fee.

2. Block - factory OEM block or OEM replacement blocks in factory location/mounting. NO DECK PLATES All tractors will be pump tested for displacement and then the oil pan will be tagged and sealed by a SCWTP tech official or Board member, if incomplete before the first pull, it must be completed before any prize money or points are awarded.

3. Manifolds - OEM stock block, head, intake manifold (single feed only) & exhaust manifold must be used for make and model of vehicle being entered. No aftermarket components allowed. Intake spacers are allowed with a max thickness of 1 inch. NO INTERCOOLERS

4. Injection pump - Bosch P7100 or P3000 series pump with 1 plunger per cylinder. 13mm Plunger Max. NO P8600 SERIES PUMPS ALLOWED Rotary pump “Model 100” also allowed or stock core injection, but must fit that make/model of tractor or engine.

5. Turbo - Out of the Box BORG WARNER SXE362. Part Number: 13009097053. No modifications to the turbo of any kind allowed. The following exhaust housings allowed: 0.88- #177211, 0.91-#177208, or 1.00-#179905. Turbo must be bought and sealed by Guenther Heritage Diesel- Walnut, IL or SMC Machine- Monroe WI. Turbo must be sealed/teched by 1st hook of the season.

6. 3,000 rpm max limit, with 1 spike of less than 1 second, as monitored by a data recording device using an ISSPRO #019R8906 magnetic pickup attached to the front engine balancer. The lead from the pickup to the rear of the vehicle is to be made of 14-16 gauge wire attached to a 110V, 3 prong female electrical outlet. The 2 wires from he pickup need to be attached to the 2 main spades, not the ground spade, of the electrical outlet. This outlet receptacle needs to be mounted next to the rear mounted air shutoff cable. Wire must be one (1) continuous wire outside the side rails and visible. NO SPLICES. If the tractor is over on RPMs in a manner stated above it will result in a DQ for that hook.

7. Water injection is allowed with lubricant. A minimum of 2 water ports located in the cross over pipe only. Water must be easily accessible for teching. Teching will be done with a refractometer using the “BRIX” scale. Any water above a 4.5 on the BRIX scale will be sampled and taken for a Freeze test. Violations will result in a DQ.

8. Fuel - Any DIESEL fuel is allowed, no alcohol, propane or nitrous oxide injections

9. Data loggers are allowed, traction control devices are prohibited

10. Engine Safety -

a. 3 way dump valve required and to be plumbed into the fuel system upstream of the injection inlet and operable from the operators seat via pull cable.

b. Air Shut Offs must prevent the engine from building boost when closed/tripped. Cable operated and spring loaded to the closed/tripped position. Shutoff must be operable from the rear of the tractor and from the operator's seat. Cable with 2 inch ring located on the back of the tractor to be mounted approximately 4 feet above the point of hook and within 6 inches of the center of the vehicle and MOUNTED IN PLAIN VIEW. Air shut offs will be teched before first hook

e. No belt operated engine fans, all fans must be electric

f. No combustible or pressurized canisters allowed on tractor.

Hitch-

1. Drawbar must be a minimum of 18 inches behind the centerline of the rear axle, a maximum of 20 inches in height, and be ridged in all directions. Hitching eye to be a minimum of 1 inch thick with a 3 inch by 3.5 inch inside diameter hole.

2. Wheelie bars and Tie bars will not be mounted, bolted, welded to the hitch

3. No 3rd link hitch support

Weight-

1. 10500# max weight limit

2. All tractors will cross the scale prior to hooking to the sled before every hook

Tires-

1. 20.8-38 or 18.4-42 max size. Top cut tires only, No Double, Single, Check, or Bar cut tires allowed.

2. 9 or 10 bolt pressed steel wheels allowed (subject to SCWTP board approval) or 9 bolts aluminum rims, cast centers also allowed.

3. Hubs- Weld on hubs allowed (1” thick), Wedge lock style hubs are allowed, U-Clamp style hubs allowed only if they are 3 bolt

“Open Hood Policy”, If there is a question about legality of a tractor, an individual can inspect another individual in the class. In return that individual can inspect the accuser’s tractor as well. Must have both class reps and SCWTP Board members present.

· Performance violations (i.e. water, cubic inch, weight, or turbo)

First Offense: points and $250 fine

Second Offense: points and $300 fine

Third Offense: points and $350 and forfeit rest of season

(Fines MUST be paid before next hook)

All sanction members must have a club sponsor to be a member. (See sponsorship page for form)

ALL SAFETY RULES SUBJECT TO SCWTP TECH AND BOARD APPROVAL