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Thread: Are small batteries allowed?

  1. #1

    Default Are small batteries allowed?

    Maybe I'm over thinking this. 9.1.4.L.1 says:

    The battery may be replaced with any equivalent battery of the
    same type. Battery may be relocated, but must be secured by a
    tie-down bracket and positive terminal must be covered to prevent
    accidental sparking.


    What is an "equivalent battery of the same type"? Does this just mean 12v, or does this mean the same battery group number? In other words, am I stuck with the stock size battery?
    EP 1990 Mazda RX-7 (used to be STU until the turbo cars scared me away, and STL rotary cars require too much ballast)
    ITS/T4 2004 Nissan Sentra SE-R Spec V

  2. #2
    Join Date
    Mar 2001
    Location
    Connecticut
    Posts
    7,381

    Default

    Got a letter on that in our queue, Prof. We're going to E&O the reg to make more sense. Watch for Aug Fastrack. - GA

  3. #3

    Default

    Cool beans! I'd really like to be sporting a small battery at the Runoffs.
    EP 1990 Mazda RX-7 (used to be STU until the turbo cars scared me away, and STL rotary cars require too much ballast)
    ITS/T4 2004 Nissan Sentra SE-R Spec V

  4. #4
    Join Date
    Aug 2005
    Posts
    1,717

    Default

    Did you get your ecu back yet??
    STU BMW Z3 2.5liter

  5. #5
    Join Date
    Jan 2010
    Location
    Houston-ish
    Posts
    932

    Default

    Every STU car I've seen has a smaller than stock battery, but they're all lead-acid.
    IMO, that falls within the scope.
    (And dammit, I hope so.. I'm running a Miata battery relocated to the trunk to get the 70lb off my RF corner!)
    Houston Region
    STU Nissan 240SX
    EProd RX7

  6. #6

    Default

    Quote Originally Posted by Z3_GoCar View Post
    Did you get your ecu back yet??
    The ECU and coils came back today, so I'll be installing all of that on Sunday. If all goes well, I'll also get to start the car the weekend! I may even jump the gun and install the lightweight battery I have sitting around.

    Then it's just a matter of whether I want to make the drive to Miller in August.
    EP 1990 Mazda RX-7 (used to be STU until the turbo cars scared me away, and STL rotary cars require too much ballast)
    ITS/T4 2004 Nissan Sentra SE-R Spec V

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