2024 Turbo Exhaust Containment

Turbo Exhaust Wheel Containment

  1. Any turbocharger used in NTPA competition where exhaust exits to atmosphere must have an approved exhaust wheel containment device installed.
  2. Containment device and any attaching components or hardware must be supplied by a NTPA approved manufacturer.
  3. Containment device cannot be placed in any part of exhaust pipe. If containment device is attached to turbo exhaust housing flange by use of a clamp, then the exhaust pipe must be welded to the containment device.
  4. Containment device must be installed as designed by manufacturer. No modifications or alterations of any kind allowed.
  5. Manufacturer may identify each component or assembly by engraving part numbers or some type of identification into each part.

NTPA Approved Containment Devices

1) Option 1 – Cross Bolts in Turbo Exhaust Housing – installed by turbo manufacturer

  1. Qty. 2 (two) .500-inch diameter, grade 5 or greater bolts installed by drilling qty. 4 (four) holes into turbo exhaust housing and welded in place.
  2. Bolts must be installed at 90 degrees from each other and no more than .0625-inch (1/16-inch) between the two bolts.
  3. Cross bolts must be located as close to the center of exhaust wheel as possible.

2) Option 2: Containment Adapter – supplied by turbo manufacturer

  1. Containment device supplied by turbo manufacturer must be approved by NTPA Tech Services and installed as supplied by manufacturer.
  2. Containment device must be located as close to exhaust wheel as possible.
  3. Containment device and components supplied for attachment to turbo housing must contain the manufacturer’s name or logo identification.

3) Option 3: Containment Adapter – supplied by NTPA approved manufacturer

  1. Exhaust adapter must be fabricated using two interlocking pieces of .250-inch x 1.000-inch flat steel notched .250-inch x .500-inch at center creating a single interlocking assembly and fully welded into a cross pattern.
  2. Round steel containment adapter must be a minimum .175-inch wall thickness and contain cross assembly fully welded inside the adapter, not in exhaust pipe.
  3. Leading edge of cross assembly can be sharpened a maximum of .250-inch back from leading edge facing the exhaust wheel. Any tapered or sharpened edge is in addition to 1-inch minimum width.
  4. Location of leading edge of cross assembly not to exceed .125-inch behind face of adapter flange on turbo side.
  5. Adapter mounting flange must be a minimum .140-inch wide at base of flange and a minimum .125-inch wide at narrowest point of taper.
  6. Adapter must be attached to turbo exhaust housing flange using clamp supplied by adapter manufacturer. Since this containment device is attached to turbo exhaust housing flange by use of a clamp, the exhaust pipe must be welded to the containment device. Adapter and attaching clamp must be clearly identified with manufacturer name or logo.

Exhaust Wheel Cage

Note: Exhaust Wheel Cage is a containment device bolted to exhaust housing by turbo manufacturer. Same rule as adopted in 2023.

  1. Billet steel cage made from 304 stainless bolted and fastened to exhaust housing as supplied by the turbo manufacturer.
  2. Exhaust wheel cage must be fastened using bolts, a minimum qty. 8 (eight) – 5/16-inch diameter, grade 8 or greater bolts required or wheel cage fastened as designed by turbo manufacturer.
  3. Turbo exhaust wheel cage must be manufactured by sane turbo manufacturer on which it is installed.
  4. Exhaust wheel cage must be installed as supplied. No modifications allowed.
  5. NTPA Technical Services to determine any additional dimension or specifications required.

Anyone intending to install a device like the one pictured in your exhaust pipe or flange, this is not an approved device and will not be accepted as a turbo containment device for NTPA. If you do not use one of the Turbo Manufacturers devices, (APEX DIESEL, APEX TURBO, WIMER, Hart’s etc.) then you must have a device and clamp per the drawing on this Tech Page.

About the National Tractor Pullers Association

The NTPA is the sport’s oldest and most respected truck and tractor pulling sanctioning organization. Governed by a board of directors, the NTPA is managed by World Pulling International (WPI), an independently owned entity. Headquartered in Columbus, Ohio, the NTPA provides rules and regulations and the infrastructures required for organizations throughout the country to arrange truck and tractor pulls.

The 2023 NTPA Championship Pulling Circuit is sponsored in part by Case IH; Beck’s Hybrids; Enderle Fuel Injection; Hot Shot’s Secret; MAC Trailer; O’Reilly Auto Parts; Ag Protect 1; Cen-Pe-Co Lubricants; STOP-FYRE; the National Tractor Pulling Championships in Bowling Green, Ohio; the Budweiser Dairyland Super Nationals in Tomah, Wisconsin; Heritage Iron Magazine; and Midwest Wheel Inc. Grand National Divisional Sponsors include Hi Torque (Super Farm), Doctor Preload (Super Semi), and KPXA (Modified Mini).

Watch “NTPA Championship Pulling” presented by Case IH: Tuesdays at 6:30 p.m. Eastern/5:30 p.m. Central. Encore performances appear on Mondays at 12:30 a.m. and 6 a.m. Eastern. RFD-TV is available on satellite through DirecTV (345), Dish Network (231), and AT&T (568) along with Spectrum/Time Warner, Brighthouse, Comcast, Charter, Suddenlink, Cox, and other cable providers. Check your current provider for details or visit the channel finder at www.rfdtv.com.

Visit NTPA.tv to purchase on-demand access to individually live-streamed truck and tractor pulling events. Or go all-in on the $349 Yearly Pass and get live and on-demand access to all streamed summertime NTPA events plus current and past episodes of “NTPA Championship Pulling” included! Purchase each stream or the package in your browser at NTPA.tv and watch there or via the NTPA.tv app on popular smart tv platforms including Roku, AppleTV, and AndroidTV and on both Apple iOS and Android mobile devices.

Wear it loud! The ShopNTPA.com store has pulling apparel in fresh, new designs for fans of all ages and sizes. Hats, event shirts, hoodies, pins, and patches all sport the iconic NTPA shield that represents excellence in premier-level pulling. Event, TV series, and special DVDs let you watch pulling action on your schedule. See it all at ShopNTPA.com.

For more information about the NTPA, visit our website, www.NTPAPULL.com, follow us on social media at our Facebook page (ntpapulling)Twitter (@NTPApull)YouTube (NTPApull), Instagram (ntpa), and TikTok (@nationaltractorpulling) or call the NTPA office at 614.436.1761.

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