The TCA class, an evolution of the current TCB class, places an emphasis on maintaining cost effectiveness while providing an easy avenue to entry into professional racing. Performance modifications are limited to stock sealed motors and stock transmissions, limited suspension modifications, StopTech front brakes and stock bodywork with no composites. Examples of eligible cars include the Honda Civic Si, Mazda MX-5, Ford Focus, and Scion FR-S.
The series has reduced entry fees for the TCB class in 2014 by 13% and the class rules remain stable with the addition of rewards weight to further balance competition. TC class rules remain stable for 2014.
Additionally, a new Pirelli P Zero tire will be used for TC/TCA and TCB in 2014. The tire will be longer lasting and is projected to wear over two race weekends instead of one.
The series has also announced a 'P ZERO Dollars' program. Teams that prepay a full season, receive $200 P Zero dollars for each event, which totals $1,400 in P Zero dollars that can be used to purchase tires. Teams that pre-pay four races receive $100 per race weekend, and teams that enter on a race-to-race basis receive $50 per race weekend.
For 2014, the series is again offering TC/TCA and TCB teams sponsor packages for $7,000. The package includes over $100,000 in marketing value/savings that can be used to leverage team partnership opportunities.
"We pride ourselves on listening to our teams and implementing solutions to address their feedback," said Geoff Carter, Director of Competition, Pirelli World Challenge. "It wasn't surprising to hear that the cost of racing, especially for some of our TC and TCB competitors, is a barrier to running in the series. So we look at ways to reduce costs where we can."
Listed below is an overview of Pirelli World Challenge TCA Rules:
- Stock motor specifications – will have sealing procedures at first
event for each vehicle
- Stock exhaust manifold, rest of exhaust is unrestricted, must exit
at stock location
- Air filter element is unrestricted
- Stock flywheel, open clutch – same physical sizes as stock
- Cockpit is per general rules, must retain factory dash pad
- Must use Optima brand battery
- Double adjustable shocks, non-remote reservoir, any manufacturer
- Open springs
- Minimum ride height – expected at 3.5" for all cars
- Base weights per each VTS
- Stock swaybars, may upgrade if allowed by VTS
- Stock suspension arms, limited suspension bushing upgrades
- Camber adjustment (plates or arms)
- Engine mount bushing maybe replaced with non-metallic (must retain
stock configuration and location)
- StopTech front brake package is optional
- Stock rear brakes
- Stainless Steel brake lines are allowed
- Brake ducting is allowed – see PRR for options
- Limited ECU software – only approved per VTS
- Stock Bodywork – no composite components
- Hood latches may be modified or replaced
- Transmission stock with stock ratios (F.D. maybe approved as adjustment)
- Helical gear Limited Slip Differentials, ratios and specifications
per each VTS
- 17×8 wheel – minimum weight specifications
- TC specific Pirelli Tire