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Time Trial

NASA TT utilizes a car classification system that is easy to understand, and gives HPDE 4 drivers a taste of competition by allowing them to compete for top lap times, in advanced, open passing run sessions, against similarly prepared cars for awards, prizes, and recognition.

1,798 topics in this forum

  1. Is today the big day? 1 2 3 4

    By Pat L.,
    • 75 replies
    • 10.6k views

  2. How is NASA measuring Horsepower with GPS?

    By StealthTT,
    • 21 replies
    • 4k views

  3. 2007 TIME TRIAL RULES ARE POSTED NOW--v 4.3 dated 12-16-06

    By Greg G.,
    • 6 replies
    • 1.9k views

  4. Ah, crap...didn't notice the rule about no meth injection!!

    By warrtalon,
    • 12 replies
    • 2k views

  5. Another aero question

    By Pure Energy,
    • 0 replies
    • 818 views

  6. Greg - ignition timing

    By fast_frank_d,
    • 2 replies
    • 1.2k views

  7. Send any Curb Weight Errors

    By Greg G.,
    • 11 replies
    • 3.8k views

  8. A weighty proposal

    By ooldguy,
    • 9 replies
    • 2.4k views

  9. 2 q's on the 2007 rules 1 2 3

    By roadracetransam,
    • 58 replies
    • 9.5k views

  10. 2007 TT rules - aero - hardtops?

    By Markus,
    • 9 replies
    • 1.4k views

  11. Last minute suggestions

    By roadracetransam,
    • 5 replies
    • 1.3k views

  12. Coilover question

    By DaWorstPlaya,
    • 5 replies
    • 1.2k views

  13. Unofficial NASA TT (PT) S-U-R Configurator excel spreadsheet

    By GooRoo,
    • 1 reply
    • 1.1k views

  14. Rule question.

    By roadracetransam,
    • 16 replies
    • 2.3k views

  15. Adding an EGT probe, is that moidfying exhaust Manf..?

    By Valhakar,
    • 4 replies
    • 1k views

  16. Greg - metallic steering rack bushings

    By fast_frank_d,
    • 1 reply
    • 771 views

  17. Question on unclassed car.

    By axoid,
    • 2 replies
    • 1.2k views

  18. First comment/suggestion on the new TT rules (from me)

    By warrtalon,
    • 16 replies
    • 2.7k views

  19. Leaf spring to coil spring Conversion

    By tom97ss,
    • 1 reply
    • 1.1k views

  20. AI classification

    By marty f,
    • 17 replies
    • 2.2k views

  21. Roll cage vs weight reduction?

    By Valhakar,
    • 8 replies
    • 1.4k views

  22. What's up with the tire width spec? Penalizing lighter cars 1 2 3

    By JCraven,
    • 56 replies
    • 6k views

  23. Rule clarification on intercooler piping.

    By Valhakar,
    • 4 replies
    • 933 views

  24. Curb Weight Correction

    By vinman,
    • 20 replies
    • 2.8k views

  25. DEfinition of "UNIT"

    By tom97ss,
    • 2 replies
    • 753 views
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