Streak Snapped: Searing Stops Peterlin, Tops Provo...
Contingency Awards to be Dolled Out Daily at WISSO...
WISSOTA Welcomes Mike Lacy to Lead Sponsorship Sal...
Streak Snapped: Searing Stops Peterlin, Tops Provo...

Streak Snapped: Searing Stops Peterlin, Tops Provo...

9/2/2024 -
For Immediate Release – September 1st, 2024 The Structural Buildings WISSOTA Late Model Challenge Series powered by Momentum Truck Group, Freightliner
Contingency Awards to be Dolled Out Daily at WISSO...

Contingency Awards to be Dolled Out Daily at WISSO...

9/3/2024 -
As always, we will be offering a ton of contingency awards at this year’s Speedway Motors WISSOTA 100, including product certificates from some of our
WISSOTA Welcomes Mike Lacy to Lead Sponsorship Sal...

WISSOTA Welcomes Mike Lacy to Lead Sponsorship Sal...

9/30/2024 -
WISSOTA Auto Racing leadership is excited to welcome Mike Lacy to the team effective immediately to lead sponsorship acquisitions and fulfillment head

Latest News

WISSOTA Welcomes Mike Lacy to Lead Sponsorship Sales & Fulfilment

WISSOTA Welcomes Mike Lacy to Lead Sponsorship Sales & Fulfilment

9/30/2024
WISSOTA Auto Racing leadership is excited to welcome Mike Lacy to the team effective immediately to lead sponsorship acquisitions and fulfillment heading into the 2025 racing season. Mike will work closely with WISSOTA board member Mike Jordet in soliciting and securing...more
2024 Challenge Series Recap; Searing Stands Tall as Champ

2024 Challenge Series Recap; Searing Stands Tall as Champ

9/17/2024
The 2024 edition of the Structural Buildings WISSOTA Late Model Challenge Series powered by Momentum Truck Group, Freightliner, Western Star wrapped up this past Wednesday at the Speedway Motors WISSOTA 100 with Shane Sabraski winning the finale and securing the GTX Rookie...more
Sabraski Wins The Battle; Searing Wins The War Claiming Challenge

Sabraski Wins The Battle; Searing Wins The War Claiming Challenge...

9/12/2024
For Immediate Release – September 11th, 2024 The 2024 season for the Structural Buildings WISSOTA Late Model Challenge Series powered by Momentum Truck Group, Freightliner, Western Star wrapped up its 26th season in existence at the I-94 emr Speedway in Fergus Falls,...more

Quick Info

https://linktr.ee/wissotaautoracing All of WISSOTA Auto Racing in one place.

Structural Buildings Challenge Series
Click the logo for the Schedule

Rules/Forms

WISSOTA Rules and Procedures

The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events, and by participating in these events, all participants are deemed to have complied with these rules. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATIONS 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 or death to a participant, spectator, or official. The race director shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in his/her opinion does not alter the minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation or deviation of these rules is left to the discretion of the officials. Their decision is final.

UPDATES:

Extra Halo Bar/Added Driver Protection

Extra Halo Bar/Added Driver Protection

Extra Halo Bar/Added Driver Protection

1 1/4" minimum material diameter with wall thickness of [13 Ga.] .095". It fastens to the halo @ or in front of seat headrest. Out and down to top door bar or angle back to the top door bar or B bar that goes up to the halo One horizontal bar from extra bar to B bar. Does not have to be 1 1/4". All cars need one in 2024.

2024 INFORMATION

Documents and information labeled 2023 have not yet been updated to 2024. Once that information is complete, it will be updated. The information on this page is as up to date as possible.

2025 Rule Changes

2024 Rule/Tech Clarifications:

The 2024 WISSOTA Rule Book will be available right here upon completion. Rules for all classes are in the rule book. Updates or clarifications needed during 2024 will be posted here and also published in All The Dirt! Racing News. If you have any questions pertaining to any car rules, contact: Bill Engelstad at (218) 208-7844 or bill@wissota.org.

2024 Required Patch Placement

Required Stickers 2024

All Class Clarifications

4-15-24 All cars with molded in diffusers on the back of roof are allowed for 2024. In 2025 there will be NO diffusers allowed.

4-15-24 The horizontal bar in the new intrusion/halo bar is mandatory. Must be installed by June 1 2024.

5-7-24 Hoods must be able to be removed without taking air cleaner off. [SAFETY]

9/19/24 - Stock appearing cast iron brake calipers allowed the rest of this year. Next year look for updates on caliper in the rule book for 2025.

Late Model Clarifications 2024

1/18/24
Wissota is aware of some new shock technology this is coming out. We at Wissota will not be allowing this technology in our Late Model Class. We will be releasing the rule wording soon.

Modified Clarifications

2024

7/16/24 - Adjustable Bump Stop Cups are not allowed.

Super Stock Clarifications

2024
5/22/24 - Are allowed a max. of 1/2" total travel limit material on shocks.
7/16/24 - Adjustable Bump Stop Cups are not allowed.

Midwest Modified Clarifications

2024

7/16/24 - Adjustable Bump Stop Cups are not allowed.

Street Stock Clarifications

2/7/24
Front fender tops. Max. of 4" showing outside of hood on both sides.

Rear quarter panel tops. Max. of 4" showing outside of trunk on both sides.

All engine options must follow the exhaust / header rule on page 80 rule [H] of the 2024 Wissota rule book.

5/22/24 Decks can be aluminum they can run from back of hood to front of trunk. Nose filler panel, hood and trunk hold down/ lips must be steel as they are part of body.

5-28-24 Street Stocks are allowed a max. of 1/2" total travel limit material on shock shaft.

7/16/24 - Adjustable Bump Stop Cups are not allowed.

Mod Four Clarifications

1/31/24
No light weight rear end gears allowed. [polished gears allowed]
No light weight / gun drilled axles allowed.

5-7-24 Engine side covers must be attached to frame and can not be mounted to door and can not go past mid plate.

7/16/24 - Adjustable Bump Stop Cups are not allowed.

Pure Stock Clarifications

2024
5/22/24

Fuel regulators are allowed.

Shocks must be stock type, No racing shocks. Shocks can not be take apart / rebuildable must be welded. Shock ends may not be removable. Must be same p/n side to side.

Hornet Clarifications

7/2/24
Transmissions found with the wrong gears in them will be a SPEED Infraction as stated in the Rule book with all the Penalties going with it. {NO Place in the RULE Book does it say you can take out or disconnect the POWER STEERING or the ALTERNATOR.} That will start to be checked July 8 and will be a DQ for that Race. All 3 of these will have to be fixed and showed to a tech Inspector before racing again. As for the AC Compressor we allow gutting the dash so you would have to take that out anyway and we don't want the AC liquid leaking all over.

Late Model GM CT525 Timing Curve

All Late Model drivers utilizing the GM CT525 Crate Engine must program the ignition to meet the following timing curve and RPM limits:

Max Timing: 26*
Rev Launch: 7,200
Rev Max: 7,200

Frame Measurements, Modifieds & Midwest Modifieds

ST. CLOUD, MN (December 18, 2014) – A diagram which outlines the specifications for frame measurements in the Modified and Midwest Modified divisions is available. Shown are the legal dimensions for the 1968 to 1972 Chevelle stub/frame. If your frame does not meet these measurements, please consult your chassis builder.

Officials of WISSOTA, USRA, and USMTS have produced a video tutorial which will help drivers, chassis builders and tech officials properly measure race car frames to ensure they meet 2015 rules and beyond. The following video helps to explain how Modified and Midwest Modified frames will be measured to ensure they comply with WISSOTA rules. If you have any questions, please contact Bill Engelstad at (218) 262-5823 or (218) 208-7844 or email him at bill@wissota.org.

The rules and/or regulations set forth herein are designed to provide for the orderly conduct of racing events and to establish minimum acceptable requirements for such events. These rules shall govern the condition of all events, and by participating in these events, all participants are deemed to have complied with these rules. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM PUBLICATIONS 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 or death to a participant, spectator, or official.

The race director shall be empowered to permit reasonable and appropriate deviation from any of the specifications herein or impose any further restrictions that in his/her opinion does not alter the minimum acceptable requirements. NO EXPRESSED OR IMPLIED WARRANTY OF SAFETY SHALL RESULT FROM SUCH ALTERATION OF SPECIFICATIONS. Any interpretation or deviation of these rules is left to the discretion of the officials. Their decision is final.