1. All tractors must be stock in appearance
from front to rear. All hoods, grills, fenders, and frame must be stock
appearing for make and model being pulled. Tractor must have stock block or its
replacement.
2. Wide Front ends only. The front end
will be located in the factory position.
3. Engine size limited to 640 Cubic inches.
4. Turbo must match make and model of tractor
or may be no larger than a 3LM 466. The compressor housing will have a
maximum 2.9" I.D. of intake and 2.0" O.D. outlet. The exhaust
housing will be no larger than 360 with a maximum outlet of 3.06 I.D.
5. Exhaust pipes off of turbo must have cross
bolts in pipes a minimum of 3/8" in diameter and grade #5 hard or better.
Exhaust must discharge vertically.
6. Tractor must have either the stock pump for
that make and model or a maximum of an A pump. Legality of the injector
pump is based on the visual inspection of the outside housing and not the inner
workings of the injector pump. PUMPS: Only one plunger per cylinder
and one injector per cylinder are permitted.
7. OEM stock intake and exhaust manifolds must
be used for that series engine (alterations for turbo mounting ONLY are
allowed).
8. No pressurized fuel tanks allowed.
Diesel is the only acceptable fuel.
9. Water for cooling purposes of the turbo will
be permitted, no types of accelerants or oxygen extenders or the like will be
permitted.
10. Front weights may not extend more than 11
feet from center of rear axle to the front of weights. Rear weights may not
extend more than 6" past rear tires, and in no way interfere with hooking
device or being able to hook and unhook the tractor from the sled.
11. Tractors must be equipped with steel
hitching device not more than 1.5" thick and with a 3.5" diameter
opening. Cross sectional thickness must be measured 7/8" minimum to
1.5" max. Pulling point must not be more than 1.5" from back edge of
the pulling device.
12. Tractors must hitch to a stationary draw bar
with a maximum 20" height, and a minimum of 18" from the center of
rear axle to the hitch point, no clevises.
13. Cut tires are permitted.
14. Maximum tire size of 20.8 x 38.
15. If weights, excess fluids or any part of the
tractor falls off during pull, that pull disqualified. Tarp straps are not
allowed anywhere on the tractor.
16. No more than one person is permitted on the
tractor at any time.
17. Driver must remain seated and have at least
one hand on the wheel at all times. Driver may not leave the seat of the
tractor when it is running.
18. All tractors in this class must have wheelie
bars that are able to support the weight of the tractor.
19. All engine fans must be shrouded with
factory shroud or minimum of 1/16" thick steel.
20. All tractors must have a safety kill switch
or an air shutoff accessible to the driver while operating the tractor.
21. All tractors must have a double spring
loaded throttle. One spring on the injector pump and one spring on the
hand throttle.
22. All tractors must have a 2.5 lb. dry
chemical fire extinguisher accessible to the driver while operating the
tractor.
23. Roll-over Protection System (ROPS)
required. A cage is NOT necessary.
24. Driver must wear a motor sport designed
helmet. (Snell 80 or higher)
25. All drivers must wear leather shoes, long
pants and an approved racing jacket when hooked to the sled.
26. SFI approved Flywheel blankets, .060 Inch
thick aluminum side shields, SFI approved Clutch blanket and a dead man's
throttle are required in this class. Performance clutch assembly and flywheel.
NO CAST IRON CLUTCH PARTS.
27. Tractors must have safety tie bars mounted
to rear axle housing with at least 4 bolts axle housing and extend forward of
the flywheel area and fastened to the side of the block or main frame with at
least 2 5/8" bolts. Tie bars must be of sufficient strength to support the
weight of tractor with the bolts used to split the tractor is removed. Safety
blankets must be on the inside of the tie bars and tie bars must be fastened
forward of the rear of the engine block.
28. "Hot Farm" tractors are not
permitted pull in any farm stock or antique classes operated by Allegheny
Highland Pulling Association Inc.
29. All officials will be certified. All
decisions of the officials are FINAL.
30. Operation of contest will be by current
Allegheny Highland Pulling Association rules.
31. Rules may be reviewed and or altered for the
betterment of the class by the committee of Allegheny Highland Pulling
Association Inc.