Following the feedback of Daytona Prototype team owners, IMSA released an updated set of draft technical regulations for DPs Monday evening.
While not featuring wholesale changes from the first set of regulations, released just over one week ago, the second draft does clamp down on a few key areas aimed at cost-containment.
Here’s a rundown of the noteworthy changes:
**More defined shock regulations. Teams can choose from the following approved brands and models: Dynamic Suspension DSSV, Penske 8760 and Penske 8780.
**Reduction in size of rear brakes. Single-piece wheels will only be permitted for front wheels in order to accommodate the larger optional carbon brake discs.
**Cars using carbon brakes will be subject to a +25lb Balance of Performance adjustment.
**Viscous differentials will no longer be permitted.
**Gear ratios are now free (removed the previous three-gear set limit).
**Maximum displacement for turbocharged engines has been increased from 3.4 to 3.5 liters.
The majority of the aerodynamic specifications have yet to be defined but will be following next month’s Balance of Performance tests at Sebring and Daytona, which will mark the expected first on-track tests for the DPs in their new configurations.