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ChampCar Tech Desk

Official channel for ChampCar technical questions, interpretations, and VPI requests.

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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.

VPI request checklist

For all Vehicle Performance Index (VPI) requests you must include:

  • Year, make, model, and trim level
  • Engine size and engine horsepower
  • Drive type: FWD, RWD, AWD, or 4x4
  • Transmission type: automatic or manual
  • Car weight and all factory options that affect performance
  • A link to the vehicle on automobile-catalog.com or another site with full specifications if it is not listed there

Requests that do not include all required info and research will be denied without review.

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2020-06-02 - Individual Throttle Bodies (ITB)
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2020-06-02 - Individual Throttle Bodies (ITB)

Q.
Is there an established point value for ITB's?
Technically they replace the Intake Manifold and Carb/Throttle body - so 50 points?

A.
Aftermarket intake - 25 points
Required Individual Throttle Bodies (ITB's) up to one per cylinder - 25 points
Example - BMW 6 cylinder with 6 ITB's (25 points) and one intake manifold (25 points) to allow them to bolt to the head. 50 points total

 

Updated 26Dec23

Q2.
Do I need to pay intake manifold points as well if claiming ITB's (1 throttle per cylinder)

A2.
You have to pay Intake points unless the throttle bodys bolt directly to the head. In all that I have seen there's a small runner or in some cases long individual runners then again some use a one piece intake. Anything that goes between the throttle bodies and the head will be figured as + 25 points for intake and + 25 for throttle body or bodies. Total 50 points.

Q3.
Can I manufacture the adapter plate between ITB and head by hand for 0 points?

A3.
Anything serving the purpose of an intake and nonstock to the car is + 25 points for an intake

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Article Details

Article ID:
134
Category:
Engine & Cooling
Date added:
2020-06-02 19:08:57
Views:
1,152
Rating (Votes):
(381)

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