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  1. #1

    Default NHRA Chassis Certification

    I need to upgrade the roll bar in my car to a 10pt roll cage. The cage needs to pass an NHRA Chassis Certification inspection.

    Has anybody been through one of these inspections in the past? What exactly will they be looking at or looking for? Is it simply a visual inspection?

    The rules are pretty clear on tube dimensions and locations and the cage is chromoly so it will need to be tig'd.

  2. #2
    Join Date
    Nov 2003
    Posts
    3,419

    Default NHRA Rulebook

    Quote Originally Posted by Brian Oatway View Post
    I need to upgrade the roll bar in my car to a 10pt roll cage. The cage needs to pass an NHRA Chassis Certification inspection.

    Has anybody been through one of these inspections in the past? What exactly will they be looking at or looking for? Is it simply a visual inspection?

    The rules are pretty clear on tube dimensions and locations and the cage is chromoly so it will need to be tig'd.
    Here is a good place to start..

    You could always get in touch with one of the Tech Support Contact people to answer your questions..

    http://www.nhraracer.com/content/gen...636&zoneid=132


    if you are a current member you can download the rulebook here..

    http://www.nhraracer.com/content/general.asp?articleid=47000&zoneid=132



    Last edited by H80N; 12-04-2014 at 09:38 AM.
    .

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  3. #3
    Join Date
    Apr 2009
    Posts
    22

    Default

    Just did one recently. Certed to 8.5 ET... They did visual and ultrasonic test on it.

  4. #4
    Join Date
    Feb 2012
    Location
    Wa
    Posts
    620

    Default

    Quote Originally Posted by gocirino View Post
    Just did one recently. Certed to 8.5 ET... They did visual and ultrasonic test on it.
    What exactly is the ultrasonic test? I have never seen one administered. Also, what car did you just get that inspection done on?

  5. #5

    Default

    Thanks for replying.

    The replies are exactly where my confusion is coming in. I've had people tell me that it's just visual and others tell me they do some testing of the welds.

  6. #6
    Join Date
    Apr 2009
    Posts
    22

    Default

    Depends whether the track can afford a sonic tester. Mine was a 68 Camaro. Here's a link for the sonic tester unit.
    http://www.checkline.com/product/PR-82

  7. #7

    Default

    Gotya.....did they use it to verify welds or were they just checking tube wall thickness?

    It's interesting that a track will issue a chassis certification sticker that is good anywhere but different tracks use different inspection procedures.

  8. #8
    Join Date
    Apr 2009
    Posts
    22

    Default

    Both... of course!

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