CENTRAL OHIO TRACTOR PULLERS ASSOCIATION

DIVISION 5 CLASSIC SUPER STOCK

2008/2012 RULES

WEIGHT;  7700#

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

AGE OF DRIVER;    18 years or older

FUEL;   Diesel fuel only, no pressurized fuel tanks.

TIRES;  18.4 x 38 maximum  radials allowed

CYLINDER BLOCK OR 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 466, JD 5010 & 5020 must run 531 block, AC 426, 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 that hook 3 or more times in one season must have a cubic inch, turbo, and Safety inspection.

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

HOOD, GRILL, FRAME, TRANSMISSION, REAR END, AXLE;  Must be for that make and model and must maintain stock appearance and dimension. front ends may be homemade but must maintain stock appearing wheelbase. Frames may be altered to except upgraded blocks.  No cast iron engine frames.

TOTAL LENGTH OF TRACTOR;  Maximum length 12’ 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).

INJECTOR PUMPS;  P - Pump maximum, one plunger per cylinder. No computerized fuel systems allowed.

The Committee will monitor the new pump rule and may make changes to level the playing field as they deem necessary.

MANIFOLDS;  No inner coolers, no after coolers. 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 inlet of a maximum of  2.7 in. The wheel may be no larger than  this measurement at the inlet. 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.

ALL RULES WILL BE INTERPRETED BY THE DIV 5 COMMITTEE. ANY UNFORESEEN PROBLEMS OR OVERSIGHTS WILL BE RULED ON BY THE COMMITTEE.

ALL COATPA GENERAL RULES APPLY