ChampCar Tech Desk
The tech desk is used to ask technical questions and is not to be used as a post race tech line or to phish for how others built their cars.
Please reference the BCCR as most questions submitted to the TechDesk can be answered by reading the BCCR.
You can download the BCCR here: https:champcar.org/rules
2022-12-29 - Removal of Cat Converter from exhaust manifold
I am looking to get an interpretation of the no additional points rule 4.7.2 for "exhaust systems downstream of the header/ exhaust manifold (from the collector back)" for an exhaust manifold that comes from the factory with a cat. converter built in. Can we remove the catalytic converter and replace with the a straight section of pipe?
Yes you can cut off the cat's. You should keep a small amount of the factory collector.
Note. Some of these manifolds are made of aloy steels that require different welding techniques and materials.
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