Classes

Tri-State Tractor Pullers Association

6200 Naturally Aspirated Super Stock

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General Safety Requirements

101. Tractor must be equipped with rear fenders.

102. Tractor must be equipped with a minimum 2 bar roll cage.

103. Tractor must be equipped with a minimum of a four-point driver’s restraint harness.

104. Tractor must be equipped with a fully charged fire extinguisher that is securely mounted to the tractor and within reach of the driver.

105. Tractor must be equipped with a scatter blanket or steel shield that is fully enclosed and bolted or welded together. Steel must be a minimum of 4 inches wide and .375 inches thick.

106. Tractor must be equipped with a forged steel or aluminum flywheel. Cast iron flywheels are strictly prohibited.

107. Tractor must be equipped with wheelie bars that are constructed with pads that are no higher than 10 inches from the ground and the furthest point of the pad must extend 2 inches past the furthest point of the rear tire. See Appendix A drawing for details.

108. Tractor must be equipped with an emergency shut off. Spark ignition engines must use an electrical kill switch and engines operating on diesel fuel must use an air shut off system.

109. Tractor must be equipped with removable side shields that fully enclose the engine. The side shields must be aluminum or sheet metal steel.

110. Drivers must wear helmet, fire suit, and flame-retardant gloves.

111. Tractor must be equipped with front axle skid plate, also known as front ski’s designed to prevent a roll over in the event one or both front wheels breach from the tractor. The front axle skid plate must be mounted in line with each frame rail and extend from the center of the front axle forward (on both sides) and comprised of a minimum of .100” wall x 2” diameter mild steel tube or of equivalent strength material. The front axle skid plate must be securely mounted to the chassis. The front axle skid plate surface must be a minimum 4″ wide and 12″ long with a minimum 6″ curve when measured from the front most part of the rolled edge. The front axle skid plate must support the weight of the front end when checked with a jack. The maximum ground clearance is bottom of the wheel rim but not to exceed 4″ with front tires in normal operating position. See Appendix A drawing for details.

Tractor Chassis Requirements

201. Six cylinder tractors can weigh no more than 6200 pounds.

202. Tractor must not exceed 12 feet from the center of the rear axle to the furthest point forward (including weights).

203. Tractor must be equipped with wide front end.

204. The center of the front axle must not exceed 12 inches past front edge of the grille.

205. Tractor may use tubular frame rails; however, they must be covered by sheet metal steel or aluminum.

206. Tractor’s engine, hood, grille and rear end must be from the same manufacturer. Hood, grille and rear end must be from that particular make of tractor.

207. Tractors originally equipped with a hand clutch may be upgraded to foot clutch if desired. Foot throttle required for any hand clutch equipped tractor.

208. Exhaust pipe or headers must exit the hood vertically.

209. Tractor must be equipped with a hitch that is a minimum of 18 inches behind the center of the rear axle.

210. Tractor must be equipped with a hitch that is 1.00 inches thick, has an opening of 3 inches wide by 3.75 inches long and has 1.25 inches of material to the rear of the opening. See Appendix A drawing for details.

211. Hitch may be round or square.

212. Tractors classified as “Big Blocks” pursuant to Rule 302 may not exceed 20 inches of hitch height.

213. Tractors classified as “Small Blocks” pursuant to Rule 301 may not exceed 20 inches of hitch height.

Engine & Transmission

301. Tractor engines that were originally manufactured with less than 370 cubic inches and do not currently exceed 460 cubic inches shall be considered Small Blocks. The following table illustrates approved Small Block engines by make and model:

Make Model(s) Engine Block Engine Make
Allis Chalmers 190 301 CID Allis Chalmers
Cockshutt 570 339 CID Hercules
Ford 6000 300 CID Ford
International 460, 560 301,310, 360 CID International
Massey Ferguson 1100 354 Perkins
Massey Harris 203 339 Continental
Oliver 77, 88 310, 320 Waukesha

302. Tractor engines not meeting Rule 301 shall be considered Big Blocks and shall not exceed 810 CID. The following table illustrates approved Big Block engines by tractor make and model:

Make Model(s) Engine Block Engine Make
Allis Chalmers 190 426 CID Allis Chalmers
Case 900, 930 504 CID Case
Cockshutt 570 478 CID Hercules
Ford 6000 401 or 474 CID Ford
International 460, 560 466 or 501 CID International
John Deere 4010 404 or 466 CID John Deere
Massey Ferguson 95, 97 504 or 800 CID Moline
Moline GBD, GVI 504 or 800 CID Moline
Oliver 77, 88 478 CID Hercules

303. Engine and transmission combinations listed in Rules 301 and 302 may upgrade sheet metal in accordance with the following:

Make Upgraded Sheet Metal
Allis Chalmers D-21
Case 1070
Cockshutt 1800, 2050
Ford 8000
International 656, 706, 756
John Deere 4020
Moline G1000
Oliver 1600, 1800, 2050

304. All tractor engines must be naturally aspirated.

305. Tractor must be equipped with a cast iron agricultural cylinder head from the manufacturer of the engine.

306. Tractor must be equipped with stock appearing shifter for that make and model.

307. Tractor may not use an auxiliary transmission.

308. All engines are subject to random pumping to measure CID compliance.

309. A tractor and engine combination not listed above in Rules 301 or 302 must be approved by the inspection committee and ratified by membership before pulling.

Fuel System

401. Tractors may use 4 basic fuels: gasoline, diesel, alcohol and L.P.

402. Fuel must pass random fuel tests. Non-nitromethane and non-polypropylene oxide based oxidizing additives or accelerators are permissible in all fuels provided:

A. the specific gravity of the gasoline fuel mixture is less than .755 @ 60° F;
B. the specific gravity of the methanol fuel mixture is less than .800 @ 68° F; or
C. the specific gravity of the ethanol fuel mixture is less than .820 @ 68° F.

403. Unless otherwise authorized by Rule 405 (B) or (C), the carburetor must be a manufactured updraft single barrel. Carburetor must have been manufactured with a throttle bore no larger than 3.1875 inches. Modifications to the inside of the carburetor are authorized; however modifications to the outside of the carburetor are prohibited.

404. Big Blocks must only use a carburetor detailed in Rule 403 with a modified throttle bore no larger than 3.3125 inches.

405. Small Blocks may use one of the following:

A. One carburetor as detailed in Rule 403 with a modified throttle bore no larger than 3.3125 inches;
B. One downdraft four barrel carburetor of any size. Predator™ carburetors are prohibited. Air horn shall be unaltered;
C. Not more than three down draft two barrel 500 CFM carburetors. Air horn shall be unaltered; or
D. Fuel Injection using a single throttle body air valve with a throttle bore no larger than 4.000 inches in diameter. Throttle body air valve may be oriented in any position.

406. Big Blocks and Small Blocks meeting Rule 405 (A) or (D) must be equipped with intake manifolds that are designed for one single barrel updraft carburetors. Small Blocks meeting Rule 405 (C) must be equipped with an intake manifold designed with a common plenum.

407. Carbureted engines must have a fuel sampling port connected to the carburetor float bowl(s) and must drain fuel from the float bowl(s) only. The fuel sampling port must be accessible without removing the side panels, hood or grill. Fuel injected engines must have a fuel sampling port connected to the fuel injection distribution manifold or fuel injection return system and must drain the fuel contained within the fuel injection system. The fuel sampling port must be easily accessible without removing the side panels, hood or grill.

Rear Tires

501. Tractor must be equipped with bias ply rear tires no larger than 18.4 x 38.

502. Manufacture’s size must be visible and legible on each tire.

503. Tractor may be equipped with cut or uncut tire tread.

Miscellaneous, Compliance & Sanctioning

Membership has ratified the creation of an Inspection Committee who has the authority to measure compliance with the Tri-State Tractor Pullers Association Rules and manage infractions.

901. Each Tri-State event winner will be subject to a compliance inspection by the Inspection Committee.

902. The Inspection Committee has been delegated the authority by the Membership to handle infractions by following the process outlined below, unless otherwise directed by a majority of the voting membership:

A. Tractors not meeting Rules 102, 103, 105, 106, 107, 108, 109, 111, 201, 212, 213, 301, 302, 304, 401, 404, 405, 406 and 501, and drivers not meeting Rule 110 will not be eligible to compete until compliance with the infracted Rule has been achieved.

B. Tractors not meeting Rules 101, 104, 209, 210, 407 and 502 will be expected to remedy these infractions before competing at the following Tri-State event or on a schedule that is approved by the Inspection Committee.

C. Drivers whose machines are discovered after the fact not meeting Rules 106, 301, 302, 308, 401, 403, 404, 405, 406 and who have already competed may be subject to a 366 day suspension from the Tri-State Tractor Pullers Association pending a majority vote from the Tri-State Tractor Pullers Association.

D. All other infractions will be under the discretion of the Inspection Committee for appropriate remedy. If a majority of the Membership dissents with the Inspection Committee, the Tri-State Tractor Pullers Association President will decide on an appropriate remedy.

Hot Rod Tractors
Small Block 2018 Rules

WEIGHT: 6000 #

TIRES: 18.4 x 38 maximum

AGE OF DRIVER: 16 years or older, under 18 years must have parental consent.

AGE OF TRACTOR: 1972 and older, no home- made tractors

FUEL: No pressurized fuels, no nitrous oxide, no nitrogen methanol, and no propylene oxide. Racecar gasoline, Alcohol, and oxygenated fuels may be used.

DRAW BAR: Drawbars must not exceed 20 inches in height or less than 18 inches from center of axle to hooking point. No part of draw bar may extend rearward beyond point of hook. No part of drawbar is to be attached to any point higher than the center of rear axle. Drawbars must be stationary in all directions. No clevis, absolutely no turnbuckles.

ENGINE RULE: Must be 410 cubic inches or smaller, 6 cubic inches may be added to engines that require a fresh re-bore, no engine may be larger than 416 +0 cubic inches, Must be an industry standard small block, no big blocks. Must be a cast iron block, cast iron heads, maximum eight cylinders, two valves, one spark plug per cylinder, Camshaft in block. The (Pump) is a Tech tool only; engines under protest may be subject to a tear down. All Pullers have the tear down option. All engines may be subject to a tear down by the COTPA Tech Inspector and or COTPA Officials as they deem necessary. The (Engine Rule) will be in effect through the pulling year 2020. Center of axle to rear of block (where bell housing bolts on) is to be a maximum of 72 inches

MANIFOLD, CARBURETOR: One four barrel naturally aspirated carburetor, 4150 base, 750 CFM. No predators, no dominators, no aerosol carburetors. No fuel injection, no throttle based injection. Carburetor will be inspected with a No Go gauge (1.400 top and 1.700 bottom. All intake manifolds can be low-rise type. No tunnel-ram, no sheet metal/ aluminum intakes, no casted sheet metal type, no welded manifolds allowed. Headers must exit in an upward direction.

IGNITION: All ignitions must use a MSD model 6AL or 7AL-2 system with an RPM limiting chip. Tech inspections performed by using MSD model 89952 RPM Module/Chip Tester.

Engine RPM-
1) Tractor engines will have an 8000 maximum RPM limit.
2) Tractors must use an MSD model 6AL or 7AL-2 system with chip limiter.
3) Boxes must be easily accessible for officials to tech.
4) Boxes may not be tampered/ modified. Rivets must be original. If you drill a rivet out, you will have to buy a new box. If factory sealant/ sticker is broken, a new box is mandatory.
5) Only the wiring per MSDs wiring diagram is allowed, and must be plainly visible. No other wires may be attached to any of the MSD factory wires other than as specified per MSDs wiring diagram.

HOOD, GRILL, TRANSMISSION, REAR END, AXLE: All Sheet metal to include Hood, Grill, Fuel Tank, (if part of sheet metal) Side metal, and Screens must be for that make and model and must maintain original dimensions in all directions (width, height and depth) but could be moved forward a maximum of 8 inches as a complete unit/assembly. Sheet metal must be 1972 or older. Some sheet metal modifications are allowed contingent upon Hot Rod committee approval. Agricultural rear ends must also be 1972 or older. Crossing Sheet Metal with Different Manufacturer is permissible. Bell housing and transmission may be removed if they were designed to be unbolted from the rear end at the factory. Front ends may be homemade, maximum allowable wheelbase of 100 inches from center of rear axle to center of front axle or manufacturer stock length if greater than 100 inches.

TOTAL LENGTH OF TRACTOR: Tractors maximum allowable length is 11 inches from center of rear axle to the furthest point forward, including weights.

SAFETY EQUIPMENT: Helmet and fire suit, wheelie bars, ski bars, kill switches, fire extinguishers, fenders, SFI damper, SFI flywheels and pressure plates, SFI bell housings, engine side shields must be incorporated. Drive shaft from bell housing to transmission must be shielded. Roll cages must be capable of supporting tractor and driver. No steel fans. All tractors must have wide front axles with a minimum of 32 inches between inside of tires. All electric fuel pumps must be wired to the kill switch. Neutral safety start switch is required. NO factory cast iron tub frames allowed. COTPA General Rules apply.

Technical Inspections: All Tractors must be pumped, pans sealed, and go through a complete Tech inspection prior to the summer season. There will also be random checks during the season.

Pre season inspections can be done at the Dekalb Pull at Eaton. ALL RULES WILL BE INTERPRETED BY THE Hot Rod COMMITTEE. ANY UNFORESEEN PROBLEMS OR OVERSIGHTS WILL BE RULED ON BY THE Hot Rod COMMITTEE. Hot Rod official and/or tech person has the right to check any tractor at any sanctioned event. ALL COTPA GENERAL RULES APPLY INCLUDING PROTEST POLICY Hot Rod Committee Chairperson: Nathan McCune 1-740-624-8097 Hot Rod Committee Members: Todd Cooperider, Larry Mouser, Barney Taylor.
Hot Rod technical committee: Jim Tiege Head Tech, Barney Taylor, Josh VanHorn

The Light Pro Stock Class is a black smoke, diesel tractor class. This class derived from our Classic Super Stock class. The main modifications, from the Classic Super Stocks were increased cubic inches and larger turbo size. The average horsepower for this class is approximately 1200 horsepower. This is a diesel fuel only class. The turbo charger is a 3.15 compressor wheel with unlimited turbo wheel outlet. Within our current class, the cubic inches varies between 504 to 540 with the maximum cubes allowed being 540. Maximum cut tire size of 24.5 x 32 push the ground speeds between 26 and 28 MPH. The cylinder block must be from the same (tractor) manufacturer and bolt into place without modifications. Hood, grill, transmission, frame, rear end and axle must maintain stock appearance. Maximum wheel base is 114″ measured center axle to center axle. This diverse group of pullers has all the main tractor manufacturers in this class: John Deere, International, Ford, Allis Chalmers. This ground-eating, black smoke tractor class is a very crowd-pleasing pulling class!

WEIGHT: 8500#

TIRES: Maximum 24.5×32

AGE OF DRIVER: 18 years or older

FUEL: Diesel Fuel only, water injection ok, no combustible fuels in water

CYLINDER BLOCK OR CRANK CASE: Must be from same manufacturer and must bolt in stock location without modification. All engines must be 540 cubic inches or smaller. All engine upgrades must be approved by the committee.

HEADS: Cast iron heads only. Must be from same manufacturer. No over head cams allowed.

INJECTOR PUMPS, ONE ONLY: P – Pump maximum, one plunger per cylinder. No computerized fuel systems allowed.

TURBO: One single stage turbocharger allowed. Compressor cover bore to be no larger than 3.2″ at the face of the wheel. Compressor wheel must protrude at least 1/8″ into the 3.2″ bore. Map Width Enhancement is allowed. The maximum MWE slot width is 0.200″. MWE slot will be measured where the compressor wheel is within the 3.2″ bore. The turbine bore must measure no larger than 3.70″ diameter. All the blades must protrude into this bore. No waste gates will be permitted. No Variable Geometry Turbochargers will be permitted COTPA.

MANIFOLDS: Manifolds must be from same manufacturer and must bolt onto head without modification, alteration for turbo mounting allowed. Combine manifolds OK. No intercoolers.

RPM’S: Open

DRAW BAR: Drawbars must not exceed 20″ in height or less than 18″ from center of axle to hooking point. No part of draw bar may extend rearward beyond point of hook. Drawbars must be stationary in all directions. No clevis.

HOOD, GRILL, FRAME, TRANSMISSION, REAR END, AXLE: Must be for that make and model and must maintain stock appearance. Front ends may be homemade with a maximum of 114” wheelbase. Frames may be homemade but must maintain stock appearance. Upgrades on sheet metal must be approved by the committee.

TOTAL LENGTH OF TRACTOR: Maximum length 13′ from center of rear axle to the furthest point forward, including weights.

SAFETY EQUIPMENT: Helmet, Fire Suit, Wheelie bars, Roll cages, kill switches, fire extinguishers, fenders, side shields, SFI flywheels and pressure plates, scatter blanket or steel shields, no steel fans, all electric fuel pumps must be wired to the kill switch. Wide front axles. No cast iron engine frames. (Ladder bars are recommended).

THE COMMITTEE WILL INTERPRET ALL RULES. ANY UNFORSEEN PROBLEMS OR OVERSIGHTS WILL BE RULED ON BY THE COMMITTEE. ALL COATPA GENERAL RULES APPLY.

Address Questions to:
Andy Hurst 937-790-0644
Mike Butcher 937-645-7657

WEIGHT: 7700# If a competitor moves more than 200 lb of weight forward, that vehicle’s drawbar may be remeasured and vehicle reweighed at the discretion of the official.

AGE OF TRACTOR: 1970 and older but including total run of that model.

AGE OF DRIVER: 16 years or older. Under 18 must have parent or guardian consent form signed.

FUEL: Diesel fuel only, no pressurized fuel tanks.

WATER INJECTION: Water must pass propylene oxide spot test.

TIRES: 18.4 x 38 maximum radials allowed.

CYLINDER BLOCK AND CRANK CASE: Must be from the same manufacturer. All up graded Blocks must be approved by the committee. Examples: IH 68 series 466, JD 40 series 8.1L, JD 5010 & 5020 must run 531 block, AC 516, Case 504, Ford 478, MM 504, Oliver 478 and others to be approved by the committee ALL ENGINES MUST BE 531 CUBIC INCHES OR SMALLER . All tractors must have a cubic inch, turbo, and Safety inspection before they are permitted to compete.

HEADS: Must be from same manufacturer and must bolt in stock location without modification. No over head cams allowed.

DRAW BAR: Draw bars must not exceed 20 inches in height or less than 18 inches from center of axle to hooking point. No part of draw bar may extend rearward beyond point of hook. Draw bars must be stationary in all directions. No clevis. Hitches must have at least a 3″x3¾” hole with minimum of one inch of material around the outside. A drawbar that has provisions to be made shorter than legal length is not acceptable as a legal drawbar.

HOOD, GRILL, FRAME, TRANSMISSION, REAR END, AXLE: Must be for that make and model and must maintain stock appearance. Front ends may be homemade. Maximum wheelbase to be no more than 114″. Frames may be altered to except upgraded blocks. No cast iron engine frames.

TOTAL LENGTH OF TRACTOR: Maximum length 13′ from center of rear axle to the furthest point forward, including weights. Excludes tow hook.

SAFETY EQUIPMENT: Full face helmet, Fire Suit, Wheelie bars, Roll cages, kill switches, fire extinguishers, fenders, side shields, SFI flywheels and pressure plates, scatter blanket or steel shields, no steel fans, all electric fuel pumps must be wired to the kill switch. Wide front axles. No cast iron engine frames. (ladder bars are recommended). Must have 3/8 cable around block and head. 2 Throttle return springs. 2 3/8 grade 5 cross bolts in exhaust. 3 way dump valve. Driver must be in seat at all times while engine is running. No excessive loss of liquid onto track by a vehicle while hooked to sled unless caused by breakage. Excessive is defined as any steady or intermittent stream discharged onto the track or a spot equivalent to more than 8″ in diameter.

INJECTOR PUMPS: P 3000 series Pump maximum, one plunger per cylinder. No computerized fuel systems allowed.

MANIFOLDS: No inner coolers, no after coolers. No intercooler style manifolds. OEM stock intake and exhaust manifolds for that series engine, alteration for turbo mounting allowed.

TURBO, ONE ONLY: One single stage turbo allowed. Turbo must not extend through hood.
A. Exhaust bolt pattern no larger than 2.750 in x 3. 250 in .
B. No altering of a housing to accommodate a smaller base; e.g. T-18A95 with a smaller base welded to it. No external altering of housings. Compressor housing must be 3LM style with 2” OD outlet.
C. A compressor measurement to be measured at the face of the wheel a maximum of 2.7 in. The wheel may be no larger than this measurement at the inlet. Compressor housing inlet bore to be no more than 2.75″ maximum. Tips of wheel must protrude into opening at least 1/8”. No slots or grooves. A maximum of 2 in. OD at the outlet.
D. An exhaust measurement to be measured at the face of the wheel outlet of a maximum of 3 in. The wheel may be no larger than this measurement at the outlet. Exhaust housing bore to be no more than 3.06″ maximum.

ALL RULES WILL BE INTERPRETED BY THE DIV 5 COMMITTEE. ANY UNFORESEEN PROBLEMS OR OVERSIGHTS WILL BE RULED ON BY THE COMMITTEE.
(The Division 5 official and/or tech person has the right to check any tractor at any time at any place.)

ALL COATPA GENERAL RULES APPLY
Chairman: Matt Spillman 330-268-4301