Battery rules for NHRA? - Team Camaro Tech
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post #1 of 6 (permalink) Old Oct 25th, 08, 03:38 AM Thread Starter
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Paul Church
 
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Battery rules for NHRA?

I need to plan my battery system;

What are the NHRA rules regarding battery placement/mounting and shut-off devices for a car slower than 10 seconds?

Since I'm assuming an emergency killswitch is required (and usually mounted on the back of the car), is a trunk-mounted battery the only option?
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post #2 of 6 (permalink) Old Oct 25th, 08, 10:17 AM
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Re: Battery rules for NHRA?

If battery is mounted in the trunk, the trunk must be sealed from the interior, as in installed back seat or paneled.
Battery cutout switch must be connected to positive cable. Should be ground cable, but NHRA might change the ruling someday.
Battery cutout switch must kill all electrical system, including engine and alternator, no running of engine after switching to OFF.
Battery switch must be labelled for OFF position, whether rotary switch or PUSH-OFF.
Battery must be bolted to frame member with min two min 3/8 inch hardware and in a vented box to the outside.

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post #3 of 6 (permalink) Old Oct 25th, 08, 03:13 PM Thread Starter
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Re: Battery rules for NHRA?

Thanks for those rules!

So is the stock underhood mounting shelf considered 'bolted to a frame member'? If so, maybe a sealed red-top optima battery with a billet hold down will work since it has 3/8" hardware?



Then I could still mount the cutout switch on the back of the car using one of these Painless remote disconnect solenoids (if these solenoids are still considered NHRA legal?)

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post #4 of 6 (permalink) Old Oct 25th, 08, 03:19 PM
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Re: Battery rules for NHRA?

I haven't been given a problems with the track Techs on mine. Stock location, and stock hold down... no cut-off switch (but I'm only in the mid-high 11's)

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post #5 of 6 (permalink) Old Oct 25th, 08, 08:52 PM
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Re: Battery rules for NHRA?

If you plan on leaving the battery in its stock location, its fine. But you do have to install an across the top battery holddown as the stock 'clip' bolted to the bottom of the tray didn't pass at time I got tech inspected. Each track inspector varies.

I bought an over the top holddown and used all thread from the tray to secure one side then added a bolt to the rad support for the other side.

The only time you need to add a cutout switch is when battery is mounted in the trunk, then the rules apply.

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post #6 of 6 (permalink) Old Oct 26th, 08, 05:06 PM Thread Starter
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Re: Battery rules for NHRA?

Cool! Thanks a lot for the info, that helps me a bunch- no switch needed!
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