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Diesel Trucks - 8000# 2.6 Smooth Bore 

  1. NK Pullers Safety/General rules apply

  2. 2.6” Turbo will follow Lucas Oil Pro Pulling League (PPL) rule (note 2016 changes listed below)

  3. D.O.T. Tires required

  4. Dual wheels allowed on rear

  5. NK pullers diesel truck pullers have agreed to follow the PPL 2.6” turbo, 8000lb diesel truck rules as stated in the 2016 handbook. 

  6. 3.0” turbos will be an exhibition pull only and follow NK general safety rules.

  7. All turbos will be subject to inspection at any or all pulls.

  8. Diesel trucks with 3.0 “smooth bore” will drive in there own diesel truck class.

  9. Fire suit (jacket & pants or 1 piece) required

  10. Helmet with strap required. Face shield recommended

  11. Fire retardant head sock, boots, gloves and a neckbrace-recommended.

  12. Fully charged fire extinguisher must be mounted within reach of driver.

  13. All drawbars will have an opening minimum of 3.75” x 3”.

  14. A white safety light is required to indicate that vehicle is in neutral during process of hooking or unhooking from sled.-Required. An additional reverse light, amber in color will Illuminate when vehicle is in reverse. -Recommended.     

  15. AIR SHUT OFF: must be operated from the driver seat and will consist of cap or guillotine that closes off air into the engine. The cap or guillotine will be spring loaded. Butterfly systems not permitted.

 

BELOW - (COPIED FROM THE LUCAS OIL PRO PULLING LEAGUE (PPL) 2015 HANDBOOK) FOR DIESEL TRUCKS

**** REVISIONS FOR 2016 LISTED BELOW****

​

2.6 Diesel 4X4 Truck

  1. Ballast iFront hanging weights are allowed, not to exceed 60 inches forward of the center of the front axle. This will be measured from center of front wheels to end of weight assembly.Ballast may be added in the bed of the truck. Maximum weight 8000#.

  2. The body must be the OEM truck body, including the full bed floor. No flatbeds permitted. The body must retain full sheet metal, after-market hoods are permitted. The hood must be closed and securely latched while the vehicle is hooked to the sled.

  3. Front brakes only are required.

  4. The OEM chassis is mandatory. The engine must be in the OEM location for the body used. The vehicle must retain the full OEM chassis. Wheel tubs, back-half conversions, tube chassis, etc., are prohibited.

  5. All drivers must have a valid state driver’s license and  fire suit. (see General Rules) which includs helmet. Seatbelt/restraint system must be worn.

  6. An OEM transmission and transfer case are mandatory. They must have been an option on a one-ton or smaller pickup.

  7. All trucks must have at least six inch wide u-joint shields around the rear u-joint constructed of at least 1/4 inch steel or 3/8 inch aluminum that will safely contain the u-joint and the end of the rear shaft. All shields must be securely mounted to the vehicle. Any front shaft u-joint that is visible from the side of the truck must be shielded to contain the u-joint and the end of the shaft.

  8. The engine is limited to a stock-appearing, Engine and transmissions can be interchanged between Dodge, Ford and GM as long as they came in a 1 ton truck or less from the factory. Complete engine must have stock appearance except where otherwise noted in these rules. Front of engine block can be no farther forward than 17” of centerline of front axle.

    • 8A. Cylinder head must be OEM or OEM replica for that brand engine. Outside of cylinder head must measure factory width and length. Head must retain OEM valve angle.

  9. All vehicles must be equipped to direct exhaust upward. Two 3/8 inch diameter bolts must be placed through the exhaust pipe in a cross pattern within one inch of each other, within 12” of the turbo.

  10. A fire extinguisher system is permitted. It must be securely mounted. A complete OEM firewall is mandatory.

  11. The complete OEM floor pan is mandatory.

  12. Hand throttles permitted. Diesel fuel only. (see Fuels for specs) No propane or NO2 permitted or any other oxygen enhancers. Racing fuel cells are permitted.

  13. Maximum of one P7100 pump limited to one plunger per cylinder. The use of multiple high-pressure common-rail fuel pumps is legal. Powerstroke engines with a single factory turbo may utilize a second HPOP. 43

  14. Hook point must be no closer than 44” of centerline of rear axle, hitch height maximum of 26”, with a minimum of a 3.75” X 3.0” opening. Hitch point must be easily accessed. No “trick” type hitches permitted. Hitch must be stationary in all directions. Hitch must be frame mounted. Hitch must be mounted centerline of rear axle or behind. Hitch must not exceed a maximum of 25 degree angle from pivot point to hook point. No hitch supports or adjusters, if fastened to the rear axle housing shall be above the centerline of the rear axle. Pivot pin of drawbar can be no farther forward than the centerline of the rear axle.

  15. Non-OEM rear-end housings are prohibited. It must have been an option on a one-ton or smaller pick up. Rear axle bolts must be covered by a cap or shield.

  16. Safety switch (Rain cap or guillotine) must shut-off air to diesel motors. Switch will be securely mounted to the back of the vehicle and have a two inch diameter metallic type ring to attach to the sled.

  17. Hydraulic steering permitted.          

  18. Suspension,

    • 18a Front: The upper mounting point for strut assemblies must be in the factory location. Adjustable caster/camber pillow ball mounts are permitted. The lower control arm may be strengthened provided factory-mounting points to chassis are maintained. The lower mounting point for the strut assembly may be modified for improved caster or camber. Strut tower braces, lower tie bars, sway bars, and limit straps are permitted. Traction bars and devices are permitted.

    • 18b. Lowering or raising the vehicle height with suspension modifications is permitted; must be bolt on only; welds permitted for attachment to frame or axle housing. Sway bars, limit straps, and camber kits permitted. Traction bars and devices are permitted; Blocked suspension is permitted. No air bags.                    

  19. Must be DOT approved tire. Maximum tire height 35 44 inches. No studded tires or chains. No alterations to tires permitted. No bar or terra tires. No front duals on front axle permitted.

  20. Non-OEM transfer cases are prohibited. The transfer case must have been an option on a one-ton or smaller pick up truck.

  21. Non-OEM transmissions are prohibited. Aftermarket torque converters, valve bodies and internal components are permitted. Transmission brakes are prohibited. Any non-OEM floor-mounted automatic transmission shifter must be equipped with a spring-loaded positive reverse lockout device to prevent the shifter from accidentally being put into reverse gear. A functional neutral safety switch is mandatory. All transmission lines must be metallic or high-pressure-type hose. All vehicles using an automatic transmission must be equipped with a transmission shield meeting SFI Spec 4.1 and must be labeled accordingly. A blanket-type shield is permitted; it must be appropriately labeled as meeting SFI Spec 4.1 and it must extend from the rear of the block to the front of transmission main body the bell housing area is to be completely covered six inch overlap where it is fastened. All non-blanket-type shields must incorporate two (or one, per manufacturer’s instructions) 3/4 inch by 1/8 inch straps that bolt to the shield on each side and pass under the transmission pan unless the transmission pan is labeled as meeting SFI Spec 4.1. All vehicles using an automatic transmission must be equipped with a flex plate meeting SFI Spec 29.1 and be covered by a flex plate shield meeting SFI Spec 30.1.

    • 21b.Non-OEM transmissions are prohibited. Aftermarket internal components are permitted. A clutch meeting minimum SFI Spec 1.1 or 1.2 is mandatory on all vehicles. All manual transmissions must be clutch assisted. Sequential shifters are prohibited. All vehicles equipped with a manual transmission must Have a flywheel shield labeled as meeting minimum SFI Spec 6.3 or greater. Applications for which an SFI Spec flywheel shield is not available may use a properly attached SFI 4.1 or 4.2 blanket that completely covers the bellhousing; it must be attached to the block and extend rearward to the transmission with a minimum six inch overlap where it is fastened.

  22. The vehicle is limited to a 2.6 inducer bore single turbocharger. The compressor wheel must protrude into a 2.6” bore for 1/8”. All primary blades must protrude into the bore. The inlet will be measured using a 2.605 inch plug the plug must not be able to enter the inducer bore. A stock map width enhancement (MWE) groove must be inside neck area where intake cover is measured. No MWE groove will be allowed that has a width greater than .200”. All provisions allowing air into the wheel other than via the bore and the MWE groove are prohibited. The vehicle driver will be responsible for making compressor wheel accessible for tech personal to measure bore and be able to inspect compressor wheel.

  23. Water injection is prohibited. All system components must be removed from the truck.

  24. Intercoolers are allowed. Dumping/draining of intercooler within 100 feet of track is prohibited.

  25. The vehicle must retain the original factory wheelbase and track width. Maximum of 1 ton truck chassis only allowed (SEE BELOW FOR 2016 CHANGES TO PPL DIESEL PICKUPS CLASS)             
     

COPIED FROM THE 2016 PPL RULE CHANGES - DIESEL PICKUPS (1/1/2016)

Limited Pro Stock Diesel Trucks (Old 2.6 Diesel Trucks) - 2016 Changes

  1. The OEM chassis is mandatory. The vehicle must retain the full OEM chassis. Wheel tubs, backhalf conversions, tube chassis are prohibited. Maximum wheelbase 158”and 102” maximum width.

  2. The body must be the OEM truck body, including the full bed floor. No flatbeds permitted. The body must retain the full sheet metal, after market hoods permitted. The hood must be closed and securely latched while hooked to the sled.

  3. Front hanging weights are allowed, not to exceed 60 inches forward of the centerline of the front axle. This will be measured by center of  the front wheels to end of weight assembly. Ballast may be  added in the bed of the truck, but securely fastened. Maximum weight 8000#.

  4. All drivers must have valid state driver’s license and full SFI firesuit. (See General Rules) which includes helmet. Seat belt/restraint system must be worn.

  5. All trucks must have at least six inch wide u-joint shields around the rear u-joint constructed of at least 5/16 inch steel or ⅜  aluminum that will safely contain the u-joint and the end of the rear driveshaft. All shields must be securely mounted to the vehicle. Any front shaft u-joint that is visible from the side of the truck must be shielded to contain the u-joint and the end of the shaft.

  6. The engine is limited to stock appearing, engine can be interchanged between Dodge, Ford, and GM as long as they came in a one ton truck or less from the factory. Complete engine must have stock appearance except where  otherwise noted in these rules. Front of engine block can   be no farther forward than 17” of centerline of front axle. Engine must have cable surrounding engine block and head. The cable is ⅜ diameter located between #1 and #2 cyclinders. Cables must pass through mainfolds. Cable will have 4 to 6 inches of slack. There will be two (2) clamps at splice.

  7. Cylinder head must be OEM or OEM replica for that brand engine.Outside of cylinder head must  measure  factory width and length,Head must retai OEM valve angle.

  8. All vehicles must be equipped to direct exhaust  upward. Two-⅜ inch diameter bolts must be placed through the exhaust pipe in a cross-pattern within  one inch of each other, within 12 inches of theturbo.

  9. A fire extinguisher system is permitted (required for NK) 2.5 #Fire extinguisher must be securely mounted. (per NK within reach of driver). A complete OEM firewall is mandatory.

  10. The complete OEM floor pan is mandatory.

  11. Hand throttles permitted. Diesel fuel only. (See Fuels for specs.) No propane or NO2 permitted or any other oxygen enhancers. Racing fuels cells permitted.

  12. Maximum of one p7100 pump limited to one plunger per cyclinder. The use of multiple high pressure common rail fuel pumps is legal. Powerstroke engine may utitlize a second HPOP.

  13. Hook point to be no closer than 44” of centerline of rear axle, hitch height maximum of 26”, with a minimum of 3.75X3.0” opening. Hitch point must be easily accessed. No “trick” type hitches permitted. Hitch must be stationary in all directions. Hitch must be frame mounted. Hitch must be centerline of rear axle or behind. Hitch must not exceed a maximum of 25° angle from pivot point to hook point. No hitch supports or adjusters fastened to the rear axle housing shall be above the centerline of the rear axle. Pivot pin of drawbar can be no farther forward than the centerline of the rear axle.

  14. Axle shields are required. Shield to be .060” thickness steel or aluminum. Shield not to be mounted to axle ends or hub bolts. A hole may be  cut in one to allow locking in of hubs.

  15. Safety switch (rain cap or guillotine) must shut-off air to diesel motors. Switch will be securely  mounted to the back of the  vehicle. Ring at rear of truck, minimum of two inch diameter solid ring, which the zip tie will tie to rigid point on truck. For any cases of re-pull, zip tie must be broken.

  16. Hydraulic steering permitted.

  17. Suspension- The upper mounting point for strut assemblies must be in the factory location. Adjustable caster/camber pillow ball mounts are permitted. The lower control arm may be strengthened provided factory –mounting points to chassis  are maintained. The lower mounting point  for the strut assembly may be modified for improved caster or camber. Strut tower braces, lower tie bars, and limit straps permitted. Traction bars and devices permitted     17b. Lowering or raising the vehicle height with suspension modifications permitted; must be bolt on only, welds  permitted for attachment  to frame or axle housing. Sway bars, limit straps and camber kits  permitted. Traction bars and devices permitted. Blocked suspension permitted. No air bags.

  18. Must be DOT approved tire. Maximum height 35 inches.No studded tires or chains. No alterations to tires permitted. No bar or terra tires. No front duals on front axle.

  19. Drivetrain will consist of the following: Any front axle, transmission, transfer case, rear axle permitted. No planetaries permitted.

  20. SFI bell housing and/or\ SFI blowproof bell housing required.

  21. The turbocharger is smooth-faced intake  housing, limited to a 3.0” inlet,(no map ring) with all air entering through the 3.0” intake opening. Intake wheel must protrude 1/8th inch inside of  opening.

  22. Water injecton is prohibited. All components must be removed from the truck.

  23. Intercoolers are allowed. Dumping/draining intercoolers without a catch pan within 100 feet of trac is prohibited.

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