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/web/rules.php
VPI requests require the year, make, model, trim level, engine size, engine HP, Drive type (FWD, RWD, AWD, 4x4), auto or manual transmission, car weight, and all options. Your request will not be answered if you do not include all of that information. You must use http://www.automobile-catalog.com for all of your information submitted. Include the link to the automobile catalog so we can quickly reference the data. If your car is not listed on that website, please link any website that has the info. If you do not include your research info above, your request will be denied.
Thank you.
The ChampCar Endurance Series Tech Team
ChampCar ChampCar Tech Desk Knowledgebase
Drivetrain & Axle
Suggested knowledgebase articles:

Knowledgebase Drivetrain & Axle

Articles in this category

2020-01-05 - Modifying Driveshaft

Q.If a stock driveshaft is shortened to move an engine rearward, is there a point penalty?A.Removing...

663
(416)

2020-01-10 - Miata rear differential gear ratios

Q.I want to confirm I am reading this rule correctly. 4.7.8. Rear-end gear-ratios are open to all OE...

1,385
(290)

2020-03-20 - Welded Differential

Q.Is there any point value charge for welding the spider gears in an OE open differential so that it...

721
(298)

2021-11-22 - Transmission Swap & Required Components

Q.Are all of the required components for a transmission swap included for the 25 point fee? Those pa...

709
(2)

2022-12-26 - NA to NB Miata transmission swap

Q:The 5 speed NA and NB Miata transmission have exactly the same parts, gearing, functionality and f...

978
(1)

2023-02-25 - Miata Diff Housing Notch

Q.Due to the stock miata torsen diff housings having a notch made into the passenger side by the fac...

473
(1)

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