Official channel for ChampCar technical questions, interpretations, and VPI requests.
The Tech Desk is for rules clarifications and technical questions. It is not a post race tech line, a place to protest results, or a place to fish for how other teams built their cars.
Most questions can be answered by reviewing the current BCCR Rulebook. Please read the applicable section before submitting a ticket.
If your question is already covered clearly in the BCCR, your ticket may simply be answered with a reference to the rulebook section.
For all Vehicle Performance Index (VPI) requests you must include:
Requests that do not include all required info and research will be denied without review.
Q1.
What is the value of an aftermarket piston if kept at the same compression ratio?
Q2.
What would the points if you raised the compression?
A1.
You cannot use aftermarket pistons unless they are OE equivalent. Please submit the specs. on the desired piston to tech for pre-approval.
A2.
You can overbore to factory overbore specs but forged or higher compression performance pistons are not allowed
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