Mounting a battery in the trunk - Team Camaro Tech
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post #1 of 9 (permalink) Old Aug 5th, 03, 06:47 AM Thread Starter
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Question

I have read all the posts (from searches) and I am wondering, is it a problem running a battery without a battery box? Are the "fumes" put off from a battery damaging to the car body? Is the smell a problem? I am in an engineering mode. I want to meet the NHRA specs for a holdown (3/8 holdown through the floor)and I want to use a box. I am having a problem trying to develop a method to use both and still have the ease of removing teh battery without to much hassle. Any ideas would be appreciated.

Daddy's Hot Rod.
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post #2 of 9 (permalink) Old Aug 5th, 03, 12:44 PM
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I can tell you that yes, the battery will emit a fine mist of acid while it's charging. Over time, the gases will take their toll on the metal.

-dnult

Dave
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68 Coupe, 350 w/ Edelbrock Performer RPM heads, cam, intake, 700R4, Dave's small body HEI
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post #3 of 9 (permalink) Old Aug 5th, 03, 05:46 PM
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Iím in the process of installing this kit from DSE which includes this Optima Holder, cable, connectors, and a bulkhead connector to route the Pos. out the front right above the starter (all seen up one page when on the above link). The ground will just go directly through the firewall via grommet to the block somewhere. Cables are routed inside up around the well from the trunk through that valley above the rocker.

Here are some pics of the kit I scavenged off the web (not my car):


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post #4 of 9 (permalink) Old Aug 6th, 03, 06:25 AM Thread Starter
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Yep, saw the pics for the trunk mount. Looks very nice and very clean. I don't want to use an Otima battery as I have not heard good things about them holding up over time. I guess I will just keep trying to engineer a case and mount. I may have to give up on the NHRA style holddown rods and use a case and strap mount system. I like the routing of the wires in the pics. very clean.

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post #5 of 9 (permalink) Old Aug 6th, 03, 10:07 AM
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Go to web site and look at battery pic, Thats the summit $40 kit made a steel plate under box for support, cables are run along rear frame and into rocker, then out of rocker in front to remote sol.

Pics <a href="http://hobbystage.net/camaro/clash/" target="_blank">http://hobbystage.net/camaro/clash69/</a>
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post #6 of 9 (permalink) Old Aug 6th, 03, 12:17 PM
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One thing I would recommend-put your remote mount solenoid in the trunk as close to your battery as possible. Doing it this way insures that there is no current in the long cable snaking it's way through the car (through and past many sharp surfaces!) unless you are starting it. I did mine this way and it works like a charm. The positive cable in my trunk is only a foot long as it attaches to the remote solenoid, and the remote solenoid never gets hot so hot-starts are not a problem either.. The only extra work here is running a 12+ source wire to the trunk to activate the solenoid when the key is in the start position, and also running a charging wire back to the battery from the alternator. The wire from the alternator to the battery MUST have a fusible link installed in case the wire ever get's chafed.

If you are going with a traditional battery as opposed to the newer sealed units, get a marine battery box, and make certain that when the battery is in the box and it is strapped in that it is air tight.. After that, drill a line (anywhere in the box you prefer) to attach a 3/8" hose that exits out underneath the car.. This way, the fumes have a way out of the box and they end up outside the car away from precious sheet metal.

1969 383CI, T-56, 12 bolt-3.31 posi, 13" C5 Rotors, PBR Calipers, rear disc system..
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post #7 of 9 (permalink) Old Aug 7th, 03, 04:48 AM
 
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I couldn't locate a fusible link so I used some of that auto stereo gear, a high-end fuse holder with a 80amp fuse installed. This runs through an eight gauge wire to the junction block on the radiator support aside the old battery location.

In your opinion, am I flirting with disaster or is this just a variation of what you did? My thinking was if I drop the 800 cold cranking Optima to ground, the fuse wouldn't last a blink.

Rick.
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post #8 of 9 (permalink) Old Aug 7th, 03, 05:22 AM Thread Starter
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Thanks Go69. I was planning on using the solenoid in the trunk setup. I've been spending time in the MAD electric website and I read about several changes I will be making. As for the battery box, I agree, a good plastic marine style box will work well. It will probably offer a cleaner look as well. As for the venting, that was one of my major concerns. A sealed box is an absolute.

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post #9 of 9 (permalink) Old Aug 7th, 03, 09:52 AM
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Gee, that car looks familier? For what it's worth, I have had NO problems at all with the Optima, never had a hot start issue, and no venting required.....Just use QUALITY cables and components..

Good Luck. [img]graemlins/beers.gif[/img]
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