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Where to mount battery in the back

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Old Jan 2, 2012 | 01:26 PM
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Default Where to mount battery in the back

Where's the best place to mount the battery in the back, t-top well or in the right rear wheel well?
Thanks

right rear wheel well, say that 3 times! LOL.

Last edited by RENE'S RAGE; Jan 2, 2012 at 03:38 PM. Reason: spelling
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Old Jan 2, 2012 | 02:02 PM
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i personally put mine in the r/r wheel well where the spare tire goes...looksclean,and cant even see it with all the plastics covering it.
heres the relocation i mademyself with some angle iron.

Last edited by JaYZeig; Jan 2, 2012 at 02:13 PM.
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Old Jan 2, 2012 | 02:49 PM
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Only thing I will say is...if you go to the track, they will require a battery box if in the passenger compartment and a battery cut-off switch that kills all electric to the car and also kills the motor.

Where to mount battery in the back-cutoff.jpg
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Old Jan 2, 2012 | 03:22 PM
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I've got a battery box and cut-off switch. I have it mounted in the r/r well now.
Just wandering what everyone else is doing. Any advantages, weight distributions, traction, ect. from one or the other.

Last edited by RENE'S RAGE; Jan 2, 2012 at 03:39 PM. Reason: spelling
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Old Jan 2, 2012 | 04:05 PM
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If you seal off the rear area with a bulkhead, you don't need to have your battery in a box.
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Old Jan 6, 2012 | 04:35 PM
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Mines in the wheel well also. I have a heavy azz optima red top. It may be too much weight biais on the right side with my battery. It does make for a nice clean install
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Old Jan 6, 2012 | 04:48 PM
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I had mine on the right side of the t top well, down in a little bit. It will now be located on the same right side, but no longer in the battery box, since a bulkhead is going in to seal off the fuel cell that's going next to the battery.

Some people that run 2 batteries put one on each side, 2 in the middle, sometimes one in the middle.. I have seen one in the left side of a car as well... I wouldn't make a big deal about where it is... as long as the car is scaled properly.
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Old Jan 7, 2012 | 10:08 AM
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Originally Posted by JL ws-6
I had mine on the right side of the t top well, down in a little bit. It will now be located on the same right side, but no longer in the battery box, since a bulkhead is going in to seal off the fuel cell that's going next to the battery.

Some people that run 2 batteries put one on each side, 2 in the middle, sometimes one in the middle.. I have seen one in the left side of a car as well... I wouldn't make a big deal about where it is... as long as the car is scaled properly.
That's the answer, I was looking for: scaled properly.
Thanks JL
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Old Jan 15, 2012 | 03:43 PM
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Originally Posted by JL ws-6
I had mine on the right side of the t top well, down in a little bit. It will now be located on the same right side, but no longer in the battery box, since a bulkhead is going in to seal off the fuel cell that's going next to the battery.

Some people that run 2 batteries put one on each side, 2 in the middle, sometimes one in the middle.. I have seen one in the left side of a car as well... I wouldn't make a big deal about where it is... as long as the car is scaled properly.
Do you have pics to help explain what exactly this having a bulkhead is???

edit: is it this? http://www.wolferacecraft.com/instal.../fbodbulk.aspx
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Old Jan 15, 2012 | 07:36 PM
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Yes that's it.
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Old Jan 16, 2012 | 02:26 PM
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Originally Posted by Doug G
Only thing I will say is...if you go to the track, they will require a battery box if in the passenger compartment and a battery cut-off switch that kills all electric to the car and also kills the motor.
And that's not as easy as it sounds because of the alternator wiring. And, it will reset the PCM when you kill power.

Al 95 Z28
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Old Jan 16, 2012 | 02:36 PM
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Define reset PCM...?
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Old Jan 16, 2012 | 08:44 PM
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I ran the ALT wire back to the battery's + side.. and when the car was shut off by the switch, it killed everything.

I hear people talk about the PCM getting "reset" from this all the time. I absolutely never saw any ill effect of doing this... so what gives, I'm curious to hear about someone having an issue because of the PCM being "reset"
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Old Jan 16, 2012 | 08:46 PM
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I disconnect my battery all the time and never have to reload anything on my PCM. I don't understand exactly what he is meaning
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Old Jan 16, 2012 | 08:50 PM
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Nor do I. I've "heard" this before, but never experienced anything from it. I used to kill the power on my car every time I put it on and off the trailer just so I knew the car wasn't live while being towed.

Never saw any adverse effects from doing this.
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Old Jan 16, 2012 | 11:15 PM
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Originally Posted by JL ws-6
Nor do I. I've "heard" this before, but never experienced anything from it. I used to kill the power on my car every time I put it on and off the trailer just so I knew the car wasn't live while being towed.

Never saw any adverse effects from doing this.
It doesn't lose the program, it loses the calculated stuff, like fuel trim. Running the alternator directly to the battery is against NHRA rules, IF they catch you

Here's an article that explains the use of a double pole switch:
http://www.timskelton.com/lightning/...y_relocate.htm

Al 95 Z28
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Old Jan 16, 2012 | 11:23 PM
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Good info. Thanks for explaining it!
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Old Jan 17, 2012 | 06:30 AM
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Al I had it fused fwiw That is one nhra rule that I'm not really sure how and if they ever inforce... simply becuase alot of factory cars are wired this way. I know the 4th gen f body had a wire that ran right from the alt to the fuse box power lug, and a wire from the battery to the same lug, essentially directly tieing them together.

I would like to see someone just have nice double pole single throw switch, so that when the switch is killed it could cut the alt to battery and battery to ign. power.

But, noone really makes one that has 2 sets of contacts that can carry some power. I hate adding extra relay's anywhere, it's just another electronic item that can fail.
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Old Jan 17, 2012 | 01:14 PM
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Here is a quick pic of my battery box in the spare tire well. Disconnect is also back there so it all hide's behind the panel.

I wanted use of the t-top holder.
Attached Thumbnails Where to mount battery in the back-005-4-.jpg  
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Old Jan 17, 2012 | 02:05 PM
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Originally Posted by JL ws-6
Al I had it fused fwiw That is one nhra rule that I'm not really sure how and if they ever inforce... simply becuase alot of factory cars are wired this way. I know the 4th gen f body had a wire that ran right from the alt to the fuse box power lug, and a wire from the battery to the same lug, essentially directly tieing them together.

I would like to see someone just have nice double pole single throw switch, so that when the switch is killed it could cut the alt to battery and battery to ign. power.

But, noone really makes one that has 2 sets of contacts that can carry some power. I hate adding extra relay's anywhere, it's just another electronic item that can fail.
One of my cars has a one wire alternator and a small crank pulley. If I start the car and let it idle the alternator will not charge. So when the tech inspector kills the power it dies. First time you zing the engine and the alternator comes on and it won't die Not safe but I pass tech.

Al 95 Z28
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