UMP Pro Late Models
UMP Modifieds

2008 UMP Pro Late Model Rules (crate)

UMP DIRTcar Late Model Rules will apply except in the specific areas outlined in this document.

UMP DIRTcar Pro Late Model Specifications in addition or replacing Super Late Model rule:

1.1 Body
a) Maximum Spoiler Height is 8 inches

1.11 Frame
a) No rear push-bars to extend beyond 6” (six inches) of rear quarter panel.

1.21 Engine
a) All headers must be pointed away from ground, horizontal, and preferably outside of car. Tri-Y headers are not allowed.
b) GM Performance Parts 602 crate engine (Part #88958602) and the GM Performance Parts 604 crate engine (Part # 88958604) are the only two engines allowed to participate in any UMP DIRTcar Pro Late Model sanctioned event. All engines are sealed from the factory and such seals may not be removed, touched, modified, or broken.
c) All engines and and all components there of must be in original form as delivered from the factory. Any changes to the factory sealed delivered configuration and assembly will result in disqualification and no points awarded. No upgrades are allowed to any engine.
d) Any part that a sealing bolt has been tampered with and or removed will result in a $1000 fine, loss of points for the year, and loss of winnings for the night.
e) Penalties may include, and not be limited to; a suspension of the car, driver, car owner, engine builder from all participation of any UMP DIRTcar, DIRTcar Northeast, or World of Outlaw events. The car and/or driver will not be allowed to participate until the fine has been paid in full. This is considered to be a serious offense and will be treated as such.
f) Any participant (driver, car owner, engine builder) caught with illegal parts within the sealing bolts on the engine will lose all points accumulated for the season, forfeit all earnings, and forfeit said illegal parts. The competitor will be banned from any/all future UMP DIRTcar Pro Late Model Sanctioned Events.

1.23 Fuel System
a) All cars must have fuel cells—32 (thirty-two) gallons maximum capacity meeting SFI specifications.
b) Fuel cell must be completely enclosed in 18-gauge steel container. No aluminum allowed.

1.25 Weight
All cars using the GM Performance Parts #602 engine must weigh 2250lbs. at all times.
All cars using the GM Performance Parts #604 engine must weigh 2400lbs. at all times.

1.21 Carburetors
a) Any 750 CFM Carburetor or smaller must have 1 11/16th base plate maximum. No exceptions. (measured with go/no-go gauge)
b) 1” (one inch) Spacer maximum on Crate Engines. 1” is measured top to bottom of spacer, including any gaskets that are between any parts of spacer on 2-piece spacers.
c) Please take time to check your plate. It is your responsibility to make sure it's right. It is the Series responsibility to make sure it's legal.
d) Spacer must not be more than 1” at all points (not just around the edges)
e) No spacer may protrude into intake.
f) One gasket allowed on top from carburetor to spacer. One gasket allowed from bottom of carburetor to intake.
g) Legal gaskets or standard gaskets only. (Completely up to the discretion of Official)
h) Two throttle springs strongly recommended!
i) Billet base plates may be used but cannot be taller than standard Holley base plate (570 maximum)

1.21 Oil Pump
a) Wet sump only.
b) Absolutely no external oil pumps—even if considered “wet”:
c) Remote oil filter and lines permitted. (One) remote oil filter.
d) Oil cooler allowed. (One)

1.21 Distributor
a) No magnetos.
b) Electronic ignition allowed.
c) MSD type box allowed.
Series retains the right to change MSD boxes with any car at any time without notice.

1.21 No Electronic Water Pumps

1.21 No Vacuum Pumps

1.14 Drive Shaft
b) Two 1 1/2” (one and a half inch) 18-gauge steel drive shaft loops or sling are mandatory.
c) Steel, aluminum, or carbon fiber drive shafts are permitted. Drivers are encouraged to perform systematic checks on their drive train to help reduce maintenance-related drive-shaft problems.

1.20 Tires
a) Hoosier Racing Tire WRS-2-55 and LM 40 are the only tires allowed or as amended by bulletin.
b) Mud plugs should be foam or bolted securely behind bead lock to the wheel. Any driver who loses a metal or plastic mud plug on the race track is subject to a $100.00 fine.
c) Steel and aluminum wheels are permitted and must be mounted with lug nuts. Center lock wheels, carbon fiber wheels, or plastic wheels are not permitted.
d) All wheels must fit template with 14” (fourteen inches) maximum width.

1.27 Shocks
a) Canister shocks are not allowed
b) UMP Dirt car will impose a $200.00 shock claim and exchange. Promoter, Driver, or UMP DIRTcar has the right to claim shock. If you turn down claim, You will lose all monies and points for that event.

1.28 Miscellaneous

a) SERIES DECALS AND PATCHES
1.1. All participants shall display required decals as provided on decal verification sheet to be allowed to compete.
1.2. Series Decal on both side of the car is mandatory, Driver's series patch mandatory to receive point fund distribution.
a) To receive any contingency sponsorship awards, team must meet the requirements of the award, such as; decals, patches, product use, product, etc.
b) Driver's last name in minimum 8-inch letters should be displayed under the car's number

UMP Modifieds Rules

1. GENERAL RULES AND PROCEDURES

1.1. The rules and/or regulations set forth herein do not express or imply

warranty of safety from publication of or compliance with these rules and/or

regulations; they are intended as a guide for the conduct of the sport and

are in no way a guarantee against injury.

1.2. UMP DIRTcar may at anytime make amendments to the rules set forth.

Rule amendments will be posted online via the UMP DIRTcar web site and noted

in the official UMP DIRTcar newsletter.

1.3. UMP DIRTcar rules shall apply at all UMP DIRTcar sanctioned events.

Tracks that neglect to enforce UMP DIRTcar rules may lose their UMP DIRTcar

sanctioning and participation in State and National point's competitions.

1.4. EIRI (except in rare instances) Decisions of UMP DIRTcar Officials are

final and binding without exception. In some cases, track safety rules may

take precedence over UMP DIRTcar published rules. Any discrepancy between

UMP DIRTCar and track rules should be brought to the attention of UMP

DIRTcar.

1.5. UMP DIRTcar officials shall have full authority over UMP DIRTcar

sanctioned events. At the discretion of UMP DIRTcar officials, any

competitor may be penalized for rule violations, hazardous actions or

assaults/threats against any official.

1.6. No car will qualify without inspector approval. All UMP DIRTcar race

cars are subject to inspection by UMP DIRTcar officials at any time.

1.7. The uses of pit boards or colored flashlights are prohibited.

1.8. All UMP DIRTcar racetracks will phone, e-mail or fax results to UMP

DIRTcar headquarters before noon each Monday.

Fax# (812) 426-1211 E-mail: sdillman@dirtcar.com This e-mail address is

being protected from spam bots, you need JavaScript enabled to view it

2. SERIES DECALS AND PATCHES

2.1. All participants shall display required decals as provided on decal

verification sheet to be allowed to compete.

2.2. Series Decal on both side of the car is mandatory, Drivers series patch

mandatory to receive point fund distribution.

2.3. To receive any contingency sponsorship awards, team must meet the

requirements of the award such as; decals, patches, product use, product

verification

3. SAFETY

3.1. Seat Belts

3.1.1. The use of at least an SFI approved five point seat belt system

including a crotch belt is required. The system is to be mounted to the

specifications and instructions of the seat belt manufacturer.. The date on

the belt must not exceed 4 years.

3.1.2. Seat belt webbing that comes into contact with any sharp or

unradiused metal edge must be protected from that edge. Belts must pass

through seat according to the specifications of the seat and belt

manufacturer..

3.1.3. As racing seat belts are subjected to severe conditions, it is

encouraged that worn or frayed belts are replaced immediately and undamaged

belts are replaced every 24 months or the belt manufacturer's

recommendations. The date sewn into the webbing should be used as a guide.

3.2. Halon fire extinguisher system is highly recommended.

3.3. The firewall at front of cockpit should be constructed of metal to

minimize airflow from the engine compartment into the cockpit and contain no

holes or gaps.

3.4. Driver's seat must be of a proper racing seat design, installed on the

left side of the car, and securely attached to the frame as per manufacturer's

specifications.

3.5. All drivers must wear a clean one or two piece approved driver's suit,

quilted or with underwear, head socks, gloves, foot socks and shoes to SFI

specifications.

3.6. An undamaged Snell SA2000 0r SA2005 or newer spec full face helmet is

mandatory for all events including track packing. SA95 is not acceptable

effective March 1st 2008.

3.7. All crews must carry an operable fire extinguisher of 20 pounds marked

with the car number in 2 inch numbers/letters in the rear of their

transporter, capable of extinguishing gas and oil fires.

3.8. Numerous driver restraint and personal protection devices such as

window nets, neck collars, Hans devices, arm restraints head and neck

restraints or similar are available and highly recommended. It is the driver's

decision on his/her personal protection and selection of use.

3.9. Solid steering wheel for protection of wrist is recommended

4. ROLL CAGE

4.1. All cars must have a suitable steel cage in driver's compartment

including headrest. Roll cage must be welded to the frame and extend above

the driver's helmet.

4.2. Driver door bars must be as close to parallel to the ground as possible

and located perpendicular to the driver for maximum driver protection and

easy accessibility. The side bars must be welded to the front and rear of

the roll cage members. No brazing or soldering is permitted. Door bars

that have a thickness of .095" (ninety-five one-thousandths of an inch) or

less must have at least 1 1/2" (one and a half inch) diameter. Minimum of

(3) Three door bars on divers side.

4.3. Protection of feet is mandatory. A bar across the back of the engine

with vertical bars and rub rails or similar protection is sufficient.

4.4. Side roll bars are mandatory and must extend into the door panels.

4.5. Roll cage must consist of continuous hoops that are no less than 1 1/2"

(one and a half inches) outside diameter and must have a wall thickness of

at least .095" (ninety-five one-thousandths of an inch).

4.6. Roll cage must be frame-mounted in a minimum of 6 (six) places.

4.7. Roll cage must consist of a configuration of front and rear hoops

connected by tubing on the sides or side hoops. Driver's head must not

protrude above cage with helmet on. Roll cage must be securely supported

and braced

5. FRAMES

5.1. Factory production full 1950 or newer parallel American passenger car

frames only. Frames must be complete in front of firewall. No cutting of

frame in any way in front of firewall!

5.2. Front cross member may be notched for radiator clearance only. Cross

members must be plated to retain complete box configuration..

5.3. Jeep, Bronco, 4-wheel drive, front wheel drive or sports car frames are

not allowed. .

5.4. Minimum wheelbase is 108" (one hundred and eight inches). Maximum

wheelbase is 112" (one hundred and twelve inches).

5.5. Rear of frame may be altered to accept leaf or coil springs. Any coil

spring must be at least 4 1/2" (four and one-half inches) outside diameter.

(Any spring)

5.6. Fiberglass lift bars are not permitted. Rear torsion bars are not

permitted.

5.7. Frames may not be widened or narrowed and must be able to support roll

cage on both sides and must be full and complete on both sides. Minimum

frame and body height from ground is 4" (four inches). Front bumper must be

mounted to the ends of the frame with the bottom loop parallel to the

ground. Minimum of 1" pipe is required to support the car when being towed.

Rear bumpers must be constructed of pipe or flat stock and must protect the

fuel cell. Center of bumpers (front and rear) must have 25 inches of ground

clearance with a 2" (two inches) tolerance. Rear bumper, Nerf bars must not

extend beyond width of rear tires and must not contain any sharp edges.

5.8. Brace bars forward of the cage may not be higher than stock hood

height.

5.9. Rear push-bars may not extend beyond 6" (six inches) of rear quarter

panel.

5.10. All side bars and bumpers must be capped on ends.

6. BODIES (see drawing diagram for reference)

6.1. Bodies must follow dimension and appearance as shown on diagram. Body

shall be the fabricated modified body from approved vendors.

6.2. Front windshield and rear window support must be stock appearing.

Front window support may have clear Lexan support of no more than 16"

(sixteen inches) including the roof post at the bottom and going straight to

top.

6.3. Front roof post must be in a straight line from top to bottom.

6.4. Engine compartment will remain open. Side panels are not permitted.

Hood sides may have a maximum 5" (five inch) drop and must be enclosed at

rear of hood. Firewall on driver's side must meet front of door.

6.5. Side fins or lips of any kind are not permitted along the entire length

of car or any panel (hood, front, nose, and roof).

6.6. Bodies should extend no further forward than the back of the block.

6.7. A maximum of one (1) stone deflector, for rear mounted oil pumps, oil

filters, and for the main oil tank will be permitted. The deflector may be

made of steel, aluminum, or heavy gauge wire. The cover may only be mounted

near the unit it is designed to protect with a maximum size of eighteen

inches square (18" x18") and mounted only from the upper right frame rail to

the lower right frame rail.

6.8. Minimum height to top of roof is 42" (forty-two inches) with a maximum

height not exceeding 52" (fifty-two inches).

6.9. Minimum height to top of deck is 28" (twenty-eight inches) with a

maximum height not exceeding 38" (thirty-eight inches).

6.10. All cars must have a car number on both sides and the roof that are at

least 18" (eighteen inches).

6.11. Drivers last name in minimum 8 inch letters should be displayed under

the cars number

6.12. There must be a minimum of 2" (two inches) of tire clearance from the

body.

6.13. 4" (Four inches) of ground clearance.

6.14. Measurement from center of hub to rear top of deck; Maximum: 48 inches

/ Minimum: 34 inches

6.15. Maximum body width is 68 inches at any (widest) point. Minimum 53

inches.

6.16. Bottom of doors may be 68 inches wide Maximum

6.17. Rear of door may flare out 6 inches for tire clearance left side only.

6.18. Bottom of flare must be curved not pointed

6.19. Maximum rear width of car must be 67 inches at the widest point.

6.20. Roof width: Maximum - 50 inches / Minimum - 44 inches.

6.21. Roof length: Maximum - 56 inches / Minimum - 41 inches.

6.22. Maximum height on rear roof post vertical is 5 inches

6.23. Nose piece shall not be longer or wider than frame horns and shall not

attached any further back than the radiator.

6.24. Spoiler shall be a maximum of 5 inches tall total material. You may

run your spoiler at any angle you choose. 3 Spoiler supports may be used;

this includes your side spoilers. Spoiler supports and side spoilers shall

be 5 inches tall in the back and 2 inches tall in the front with a maximum

total length of 12 inches at the bottom.

6.25. Spoiler may be lexan or aluminum. You may use the roof post / spoiler

kit. This kit has the roof post and spoiler all made into one piece provided

the spoiler does not exceed 5 inches tall.

7. INTERIOR AND DRIVER COMPARTMENT

7.1. All windows must have a minimum 11" (eleven inches) vertical opening.

The entire interior must have 11" (eleven inches) of clearance from interior

deck to roof and all sections of roll cage.

7.2. A kill switch is required within easy reach of the driver. It must be

clearly labeled "ON" and "OFF".

7.3. Adjustable shocks are not allowed

7.4. Hydraulic or pneumatic weight jacks, trackers, or similar adjustable

components of any kind are NOT allowed inside cockpit of car. Items must be

removed from the car.

7.5. Mirrors are NOT permitted.

7.6. Rock guard should end at steering wheel.

7.7. Drivers compartment must be sealed from engine and race track.

Including rear of bubble hood.

7.8. Maximum slope of the interior sheet metal "shelf" is 4" front to rear

and flat side to side. 50% of the 4"slope must be used in the half of

interior forward of the driver.

7.9. Top of the interior must be flush with the top of door and quarter

panels.

8. ROOF & ROOF SUPPORTS (see drawing diagram for reference)

8.1. All roofs must be full size. No half-moon roofs. Roof cannot be more

than 12" (twelve inches) past the rear axle.

8.2. Wings, roof spoilers or ground effects of any kind are NOT allowed.

8.3. All flat type roofs will be allowed a maximum 1 inch difference between

the front of the roof and the rear of the roof.

8.4. All curved type roofs will be allowed a maximum of 5 inches in the

front and 2 inches in the rear. The break in the roof must be within 6

inches from the center of the roof.

8.5. Wedge roofs are not allowed.

8.6. Dished roofs are not allowed. Roofs must be rounded side to side.

Bead rolls acceptable.

8.7. Rear roof supports may not extend past the front side of rear upright

of the roll cage.

8.8. Side vents on front roof posts may extend rear ward from the lowest

point, a maximum of 16" (sixteen inches), then at a 90 degree angle to roof

for 1 configuration, side vents must meet outside of car.

8.9. Any sun shield must be on hinge for easy exiting, no taping allowed

that brings window opening to less than 12" (twelve inches).

8.10. All race cars must meet the measurements illustrated in the UMP

DIRTcar drawing.

8.11. Only 5 (five) roof supports to choose from - no exceptions!

6.10. Roof should be single thickness of material. Roll bar hoops must be

exposed for inspection.

8.12. Flat type roofs will be measured from the front edge of the roof down

to the interior and measured from the rear edge down to the interior,

assuming a flat interior.. A 1 inch difference between the two measurements

is acceptable. . If the Interior has been changed, the measurement be from

the front edge of the roof to the ground, and the rear edge of the roof to

the ground. A one inch difference between the two measurements is

acceptable..

8.13. If the roof is curved then a level will be placed on the top of the

car and if the roof is 5 inches or less in the front and 2 inches or less in

the rear and the break is in the middle, then the roof is acceptable..

8.14. Roofs on these cars will be stock appearing. If a UMP DIRTcar tech man

determines your roof is to far out there, you will have to make some

corrections before you will be allowed tom run that night.

9. WEIGHT

9.1. All added weight(s) must be painted white or a bright color with the

car's number clearly painted on each piece.

9.2. All added weights must be securely mounted to car with minimum of 2

(two) 1/2" (one-half inch) bolts through each weight. No weights may be

mounted on rear bumper or outside the body of the car. All added weight

must be mounted below all windows and interior sheet metal. Any size

weight.

9.3. Any car that loses lead weight during an event may be fined up to

$500.00.

9.4. Minimum weight of car with driver at all times including after the

race is 2,400 (two-thousand four-hundred) pounds.

9.5. All weight determinations will be measured on the scales selected and

by UMP DIRTcar for each racing event. Zero tolerance is strictly enforced.

10. ELECTRONIC DEVICES & TRACTION CONTROL

10.1. All electronic or computerized wheel spin or acceleration retardation

traction control devices are strictly prohibited. Controlled timing devices

attached to or controlling accelerator or rotation of wheel are strictly

prohibited..

10.2. All traction control devices utilizing wheel sensors or any means of

measuring ground speed to control wheel spin are strictly prohibited.

10.3. Adjustable ping control devices, dial a chip controls, timing controls

or automated throttle controls are not permitted in cockpit or driver

accessible areas.

10.4. Adjustable restrictor plates are prohibited.

10.5. Any remotely controlled components inside or outside the cockpit of

any competitor's racecar are not permitted.

10.6. Any competitor found with any of the aforementioned devices will be

fined and lose all accumulated points as a minimum penalty.

10.7. Radios or devices for transmitting voice or data are prohibited,

either in the racecar or on anyone connected with the car.

11. FUEL SYSTEMS

11.1. All cars must have fuel cells - 32 (thirty-two) gallons maximum

capacity. Fuel cell must be completely enclosed in 18-gauge metal

container. No aluminum allowed. All fuel cells must be completely visible.

All cells must have a minimum of 2 (two) 2" (two inch) x 1/8" (one-eighth of

an inch) steel straps surrounding them. Fuel cells must be protected in

rear of axle by securely-mounted roll cage tubing. Any driver having a fuel

cell with a capacity greater than 32 (thirty-two) gallons, will lose all

winnings and points for that event and fined $1,000.00. Any driver must be

prepared to drain fuel upon request for measurement.

11.2. One 2 (two) or 4 (four) barrel carburetor is allowed. Must be

naturally aspirated.

11.3. Fuel injection systems or electric fuel pumps are prohibited.

11.4. No part of fuel cell may extend lower than protective tubing.

11.5. Racing gasoline or alcohol is permitted.

11.6. Nitrous oxide, nitrous methane, propylene oxide or any type of

additives are strictly prohibited.

11.7. Fuel may be checked at any time.

11.8. All fuel cells must have check valve in breather and filler check

valve..

12. ENGINES

12.1. Any American made engine may be used as long as the rear of the engine

bell housing flange is mounted at least 72" (seventy-two inches) forward

from the center of the rear axle. Engine offset must be kept within 2" (two

inches) of center line from cross member. Engine height minimum is 11"

(eleven inches) from ground to front center of crankshaft.

12.2. All engines must be able to be used in a conventional passenger car

without alteration. Motor mounts cannot be removed or altered. Castings

and fittings may not be altered. Machine work on the outside of the engine

or machine work on the front or rear of the crankshaft is prohibited.

12.3. Aluminum blocks are not permitted.

12.4. Magnetos are not permitted.

12.5. . Wet systems must be operative and will go with a claim by UMP

DIRTcar officials. Total dry sump systems are not allowed

12.6. Cooling systems may be altered or modified if stock-appearing hood

line is maintained.

12.7. Batteries must be securely mounted and shielded. Batteries may not be

mounted inside driver's cockpit.

12.8. Exhaust systems must be mounted in such a way as to direct spent gases

away from areas of possible fuel spillage. All headers must be pointed away

from ground, horizontal and preferably outside of car. No more than 1/2"

(one-half inch) clearance surrounding header pipe when directed through

firewall on driver's side. Mufflers may be required at certain tracks.

13. ENGINE CLAIMS

13.1. Any qualified UMP DIRTcar competitor has the right to claim any engine

at any time during a UMP DIRTcar event. The claim is $550.00 + exchange of

engine plus $50.00 for the tow truck. Claims do not include: flywheel,

clutch, pressure plate, bell housing, headers, carburetor, starter, fan &

pulleys, motor mount, sending units and switches for oil pressure and water

temperature, carburetor adaptor, clutch ball, clutch arm, throw out

bearings, dip stick, water pump, distributor, plug wires or fuel pump.

13.2. Any driver wishing to make a claim must have taken the checkered flag

in the feature and be on the same lap as the leader. The claim must be made

in cash or certified check to promoter or designated DIRTcar official within

5 (five) minutes after the completion of the feature. The driver must have

the claim payment and his/her UMP DIRTcar current/valid license available -

a third party cannot provide these items to the claiming driver. (Yearly

membership runs from February 1 through January 31.) All claims, positive

or negative, must be reported immediately to UMP DIRTcar headquarters by the

event promoter. No driver can make over 2 (two) claims in UMP DIRTcar

within the same year. A driver can claim another driver's engine only once

during the year. Only the engine of the event winner can be claimed. In

case of multiple claims on the same engine, the engine will go to a

qualified driver who finished the furthest back in the field on the lead

lap. No driver may claim an engine if he/she has spun out and caused a

caution period. If a claim is refused, the claim is not held against the

claiming driver. The motivation behind claiming is to keep the prices

affordable and create competitive racing.

13.3. Any driver making a claim must drive his/her car immediately after the

finish of the feature, under its own power, directly to the claiming area.

Only drivers and officials are allowed in the claiming area. Claiming area

must be designated by the promoter to all drivers at the driver's meeting

prior to the feature event. The feature winner must go to the claiming area

immediately following the finish of the feature event. If no driver comes

immediately to the claiming area, the winner may proceed to the pits.

13.4. The claimed engine must be completely removed within 1(one) hour from

the time the claim is made.

13.5. The first sell/no sell or trade of the engine by the driver being

claimed is considered binding.

13.6. Only a qualified driver may claim an engine and only the winning

driver may agree to sell.

13.7. Refusal to sell forfeits all cash, trophies and contingency winnings

for the feature as well as all UMP DIRTcar State and Nationals points' award

for that night. Any driver refusing to sell his/her engine the first time

is fined $200.00 and is suspended from racing at any and all UMP DIRTcar

sanctioned race tracks and events for 1 (one) week. The second infraction

for a driver refusing to sell their engine carries a $600.00 and suspended

for 4 (four) weeks.

13.8. All claimed engines must be removed from the car at the track. The

buyer must examine the engine before removal. Once removal has started, the

sale is final. Any sabotage to claim an engine will result in the saboteur

being suspended from all UMP DIRTcar races for 30 (thirty) days and until

the fine of $1,000.00 is paid to UMP DIRTcar

13.9. To claim an engine, the claiming driver must have raced at least 1/2

(one-half) of the sanctioned events at the sanctioned track where the claim

is made or at least the last 3 (three) consecutive feature events at that

track. A driver can have his/her engine claimed at any time. No claim can

be made against a driver on his/her first night at a sanctioned track.

14. DRIVETRAIN & SUSPENSION

14.1. All drive shafts must be painted silver or white.

14.2. Aluminum, fiberglass, or carbon fiber drive shafts are not permitted.

14.3. A 1/2" (one-half inch) x 2" (two inches) 18-gauge steel drive shaft

loop is mandatory. Loop must be at least 6" (six inches) behind U-joint.

Two loops are recommended.

14.4. Drivers are encouraged to perform systematic checks on their

drivetrain to help reduce maintenance-related driveshaft problems.

14.5. Direct drives are not allowed.

14.6. Transmission must be bolted to engine. All cars must have forward and

reverse gears and be able to shift to forward or reverse with engine

running. BERT-type transmissions are allowed.

14.7. Clutch type transmissions must be equipped with explosion-proof steel

bell housing. If no explosion-proof bell housing is available for your

engine, or if you prefer, you may construct a shield of at least 1/2"

(one-half inch) x 6" (six inches) steel covering the clutch area 360 degrees

and be securely fastened.

14.8. Steering box must be O.E.M. Rack and pinion style steering is not

allowed. Must use original bolt pattern that matches frame type. In

cockpit, steering may be modified to suit the driver but must remain on the

left side. Center steering is not permitted.

14.9. "live axle" rear ends prohibited.

14.10. Quick change rear ends are approved, but not mandatory. Steel tubes

only.

14.11. Aluminum birdcages are not permitted.

14.12. Independent rear suspensions are not approved.

14.13. Floater hub assembly only.

14.14. Front suspension must be O.E.M. and be in stock location. Must be

replaceable by stock part from same type of suspension.

14.15. Aluminum spools are permitted.

14.16. Steel coil-over eliminators or steel/aluminum coil-over kits

allowed-must conform to shock and spring rules. (Rear only) (5 inch spring)

14.17. All springs must be tethered or cabled.

14.18. Aluminum shocks, shells, aluminum hubs, aluminum A-frames, aluminum

rear-end, aluminum tubes or other aluminum suspension parts are not

permitted

14.19. Steel body, one piece non adjustable shocks only

14.20. Coils over shocks are not permitted on front of car including

homemade coil-overs - no exceptions.

14.21. One shock per wheel only. No lay down shocks less than 12" (twelve

inches) away from brake rotor. Additional shocks in other locations are

permissible.

14.22. Any shock may be claimed for $120.00.

14.23. Stock passenger car spindles only. No fabricated spindles are

permitted.

14.24. Lower A-frames cannot be altered or moved. Pre-approved

after-market lower control arms are legal but must remain in factory

location. All after-market lower control arms must have an official UMP

DIRTcar-approved and numbered sticker at all times.

14.25. Tube type upper A-frames are allowed and may be moved. Aluminum

cross shafts OK.

14.26. Composite leaf springs are permitted.

14.27. Aluminum shackles are permitted.

15. BRAKES

15.1. All cars must be equipped with a working braking system on all four

wheels and all four wheels must lock up at all times.

15.2. Steel rotors only. Carbon fiber or aluminum are prohibited.

Drilling, lightening or alteration to the brake rotors or calipers is

prohibited All calipers must be O.E.M.

15.3. Single disc brake rotors or scalloped rotors are not permitted. Must

be O.E.M.

16. TIRES & WHEELS

16.1. Tire rule may be amended by bulletin.

16.2. The UMP DIRTcar approved tire is the Hoosier A-40, D-40 or H-40

compounds in the UMP DIRTcar plated tire 26.5/8.0/15 or 27.5/8.0/15.

Maximum width = 9" (nine inches).

16.3. Grooving is strictly prohibited on all tires. Only the A-40 and H-40

may have siping. Recapping of an approved tire is not permitted.

16.4. A UMP DIRTcar official can confiscate any tire at any time and at any

UMP DIRTcar track/event to be evaluated including verification using a tire

durometer. Tires that are found to be legal will be returned within a

reasonable period.

16.5. Defacing or altering any of the manufacturer's identification

markings, letters, words, numbers, on any tire is strictly prohibited. Tire

compounds may be covered by duct tape as long as UMP DIRTcar officials are

able to lift the covering at any time. Any alteration of tires may result

in immediate suspension from all UMP DIRTcar racetracks and penalties deemed

appropriate by UMP DIRTcar.

16.6. Tire softeners or chemicals designed to change the characteristics of

the tire chemistry or surface are strictly prohibited. Such chemicals or

processes may result in an EPA investigation and force the closure of that

racetrack.

16.7. Mud plugs are allowed on all four wheels. Bead locks are allowed on

right side only.

16.8. Mud plug must have car number on it.

16.9. Only 8-inch racing wheels are allowed.

16.10. Wheels must be conventional one-piece steel and must be mounted with

lug nuts. Aluminum, plastic or carbon fiber wheels are NOT permitted. Must

have five lugs.

16.11. Maximum overall width (front or rear) shall not exceed 78"

(seventy-eight inches) from the outside of tread to outside of tread.

Maximum 1" (one inch) spacer between hub and wheel is allowed. Steel or

aluminum spacer is allowed on the front of the car only so long as overall

width does not exceed 78" (seventy-eight inches).

17. BEHAVIOR

17.1. Derogatory or distasteful statements on any racecar or hauler are not

permitted at any UMP DIRTcar racetrack. UMP DIRTcar officials have

discretion and the final decision on all lettering on all racecars and

haulers. Failure to remove offensive lettering will mean disqualification

from all UMP DIRTcar events and a fine of up to $500.00.

17.2. No driver or pit crew member shall subject any UMP DIRTcar promoter or

official to threats, abusive or improper language at any time. The driver

is responsible for all crew members or those associated with the car. Any

driver or pit crew member who assaults or threatens any UMP DIRTcar promoter

or official may be fined up to $1,000.00 and suspended indefinitely from all

UMP DIRTcar events until fine is paid. Reinstatement and fines are at the

discretion of UMP DIRTcar management and non-contestable.