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

11,000# ALTERED FARM (Updated 2022)

 

General Engine and Drive Train

·       Tractor shall consist of the following: Stock motor and block or OEM block Replacement blocks are acceptable. Stock transmission or OEM replacement transmission must be externally stock appearing, no aftermarket gear boxes will be allowed inside of the stock transmission. OEM block cannot be altered in any way externally for normal repair or for mounting of fuel injection pumps. Internal webbing and water jacket to remain intact with provisions to re-bore motor block. Frame must remain stock from rear of block to rear of tractor. Clutch housing, transmission case rear end housing must be OEM or equivalent material.

·        Wheelbase maximum 114 inches unless originally produced by manufacturer, longer than must remain stock length. Maximum length 13 feet from the center of the rear axle to forward most part.

·        All engine blocks must remain in original location as intended by the manufacturer, sheet metal to be stock in length and location must be stock in appearance.

·        Wide front ends only, front tires must ride in the track of the rear tires.

·        Homemade front ends allowed but will be subject to safety inspections and SCWTP board approval. No running gear or wagon front ends.

·        Tractors must have OEM cylinder head, intake manifold and exhaust manifold for that model or series engine. No filler heads. Single feed intake manifolds only, and 1 inch intake manifold spacer allowed

·        Tractors must have hood and grills in place as intended by the manufacturer

·        No headers or custom intake manifolds.

·       No deck plates permitted

·        Cubic inch limit is 505. Under 470 may alter bore and stroke of engine to a max of 470 i.e. 414 may bore and or stroke to 470. 471 to 505 must retain factory bore and stroke.

  • Ø Exceptions: Massey Ferguson 540 cubic inch, Cockshutt, Oliver, and White 585 cubic inch (must still stay in factory bore and stroke)

  • Cubic inch displacement will be checked before 1st hook, If you are new to the class you are allowed one hook until you will be required to have your displacement check.

  • If not running for points and not having cubic inches checked, pay day hook fee, no points, no payout, pull exhibition.

·        Max weight of 11,000lbs

·        Stock core injection pump for the make of tractor. Limited to: ( Allis Chalmers- Ambic 100) ( IH-Ambic 100 ) (Ford/Massey Simms) ( John Deere and Case 12mm A- pump) (Cockshutt/Oliver/White rotary) One plunger per cylinder. NO P-PUMPS (locked in for 2022, 2023 & 2024)

. Driver must be able to shut the tractor off while in the seat by

  • Control to dump fuel from fuel system

  • Control to shut the air shut off

·        All throttles must be spring loaded to idle

·        No alcohol injection, propane injections, or nitrous oxide injection, and no pressurized containers.

·       Water injection is allowed. 2 ports maximum and must be in cross over pipe only.  Water ONLY can be used (cutting oil allowed for lubrication), Water must freeze if and when tested

·        One fuel only: Diesel, Bio-diesel, gasoline, or LP allowed as a primary fuel

·        No intercoolers, after coolers, or cooling devices for the air or fuel of any kind. Subject to inspection at any time.

·        Electric fans are recommended for safety reasons, if a factory fan is used, it must have a factory shroud 360 degrees around the fan.

·        3000 RPM max, all tractors must have functional RPM monitoring device approved by the SCWTP to hook to the sled. One can be purchased from Dennis Frey at FVP (608) 643-0200 or contact a board member.  Plug must be easily accessible. 

·        No computers allowed for data & acquisition or to control functions of the tractor

·        If a tractor records greater than 3000 RPM during the pull it will be checked by the laptop and will be allowed a single 1 second spike more than one tractor will be checked off the track after hook (if over RPM during check will be DQ.)

. IH tractor with T/A, must use electric shift.

 Turbo Chargers

·       One turbo only

·        2.42 inlet to be a stock non altered borg warner S362, turbos are available thru FVP. SXE STYLE TURBO WILL NOT BE ALLOWED.

·        Turbo’s must be sent to FVP for a seal cable to be installed to verify stock. FVP will charge $50 unless turbo comes from FVP.

·        Tech checks include inspections of turbo and or intake requirements. Turbos checked with slug. Turbo’s must be sealed by first hook.

·        Hook ups for kill switch or air shut offs are to be mounted on same vertical plane as hitch point with a 2” diameter ring. Must be accessible from the sled.

·       Exhaust pipes must have two (2) 3/8” bolts in the vertical portion of the exhaust pipe.

  •          Bolts must be installed 90 degrees to each other with-in one (1) inch of each  other. This is to prevent a broken exhaust wheel of charger from leaving the stack.

·        No rain caps or curved pipes. Exhaust must exit vertically.

Safety and General Rules

·       All drivers must be 16 years of age or older and have written permission from a parent or Legal guardian if under 18 years of age, and approved by SCWTP board members.

·       All tractors must have: (1) Wheelie bars (2) steel flywheel and tie bars (3) air shut off (4) at least 2.5 lb. fire extinguisher (5) side shields steel or aluminum no less than 0.060” thick 6) clutch blanket and ROPS/cage (7) 5/16 plate under damper if exposed (8) Battery shut off switch

·        Wheelie bars must be able to support the weight of the tractor and be no more than 10”above the ground, bars should extend 2” or more from the radius of the tire

·       Tractors must have working brakes, fenders above tires strong enough to support weight of driver. No clamshell fenders.

·       Hitch point is to be a minimum for 18” behind center of rear axle and a maximum height of 20” in height. Hitch must be rigid in all directions, hitching eye to be a minimum of 1” in thickness with a 3”x 3 ½” inside diameter hole.

·        Any weights or objects falling free of tractor during pull are a disqualified

·        Weights cannot interfere with hook up, must have a 12” clear span above the drawbar.

·       Seats must be safely secured.

·        Factory cast wheel centers, 10 bolt hubs with pressed steel rims allowed,  9 bolt 3 u bolt clamp hubs allowed (9 Bolt weld on hubs are allowed and must be 1” thick and used with reinforced rims.

·       No front wheel assist tractors allowed.

·       All drivers must wear helmet, long pants, and a fire jacket. NO SHORTS!

·        All tractors with ROPS or roll cage must have seat belts.

·        20.8- 38 0r 18.4- 42 max tire size; will allow top cut tires. No duals or chains.

·       Any tractor operated in an unsafe manner, with foul or abusive language or excessive use of alcohol will be grounds for disqualification or suspended for life. No alcohol for drivers until his or her classes are over

·        No riders on tractor

·        Anyone protesting the legality of a tractor, per the rules will be required to put up $250.00. If the tractor is found to be in violation protestor will retain $250.00 and any disciplinary action will be handled by the tech official and the SCWTP board. If tractor is found to be with-in rules, the owner of the suspect tractor retains the $250.00

. “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)

·        Tractors may be pumped for cubic inch displacement at any time by tech officials.

·       All tractors will be subject to inspection by SCWTP directors or tech members before and after each pull. All tractors will be inspected 3-4 times per season minimum. All rules will be strictly enforced. Any questions on the legality of a tractor please consult a tech member. Tech members will have the power to enforce all rules and settle disputes over disqualifications on a pull to pull basis. Any repeat infractions shall result in a meeting of tech members and board members.

·        SCWTP reserves the right to refuse any individual the right to be a member, attend or participate at any or all events, due to, but not limited to, unsportsmanlike conduct, misrepresentation of club or affiliation.

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

·       Any rules or regulations that form a grey area or not previously stated are subject to be defined or changed by SCWTP board members at any time.