Register now to get rid of these ads!

Hot Rods Trunk mounted battery

Discussion in 'The Hokey Ass Message Board' started by pie pie, Feb 3, 2011.

  1. pie pie
    Joined: Jun 29, 2008
    Posts: 673

    pie pie
    Member
    from missouri

    On my Galaxie I want to mount the battery inside the passanger fender in the trunk since it is out of the way. I cannot fit the battery box in there and out the battery in it so I want to mount it in that spot without the box. Does anyone see a problem I can't think of?
     
  2. 53sled
    Joined: Jul 5, 2005
    Posts: 5,817

    53sled
    Member
    from KCMO

    they aren't mounted in boxes from the factory.
    I've got mine bolted to the floor in the trunk.
    I take it you got the alternator, brakes, etc fixed now?
     
  3. llonning
    Joined: Nov 17, 2007
    Posts: 681

    llonning
    Member

    Take into consideration that when the battery charges you will get the acid residue in/on the trunk area. acid residue=rust eventually.

    If they are still available Corvette's had battery caps that had a vent tube to hook hoses to. The only problem you have to use an AC/Delco battery. I did that one in the past and it worked fairly well.
     
  4. Hollywood-East
    Joined: Mar 13, 2008
    Posts: 2,141

    Hollywood-East
    Member

    Use welding grade ground cable for your + lead...
     
  5. hotroddon
    Joined: Sep 22, 2007
    Posts: 28,240

    hotroddon
    Member

    The other issue is the outgassing of the battery, a potentially deadly consequence. Especially in a situation where it is overcharging, the gasses can easily creep through the rear seat area into the passenger compartment. Not a problem up front since firewalls are sealed from the greenhouse, but trunks are not.
     
  6. cool57
    Joined: Dec 19, 2002
    Posts: 1,756

    cool57
    Member

    Lots of new cars have trunk mounted batteries. They are designed to breath through an external vent. Find one with CCA rating and dimensions you need.
     
  7. Master of None
    Joined: Dec 18, 2009
    Posts: 2,279

    Master of None
    Member

    Make sure you put covers or a cover on the positive lead. That way you won't arc anything when your getting something out of the trunk.
     
  8. Larry T
    Joined: Nov 24, 2004
    Posts: 7,921

    Larry T
    Member

    Do sealed batteries outgas?
    Larry T
     
  9. hotroddon
    Joined: Sep 22, 2007
    Posts: 28,240

    hotroddon
    Member

    Some of the so called sealed batteries are just capless and vent like old batteries. I think only the ones that can be mounted sideway and upside down like Odyssey's are truly sealed. I know Optima's are vented.
     
  10. slickhale
    Joined: Dec 19, 2010
    Posts: 772

    slickhale
    Member
    from Phoenix

    99 jag xj8 battery should be about the right size/cca etc, it has the vent tube for trunk mounting.
     
  11. newsomtravis
    Joined: Jun 1, 2009
    Posts: 562

    newsomtravis
    Member
    from pville, ca

    when i have done them, mount the battery whereever your gonna put it, then close by, put your starter soleniod, that way you don`t have a huge power cable running all the way from thr back to the front of the car.......and optimas can be mounted in any position, they are vented, but nothing to spill, but there quality has gone down hill in the last few years i have experienced......and use the welding cable, works very good, more finer strands of wire, solder on the lugs that u need and done....will last a long time and be just about bulletproof.....
     
  12. pie pie
    Joined: Jun 29, 2008
    Posts: 673

    pie pie
    Member
    from missouri

    Well it is an optima and I am going to use the battery extension to have it sit up off the floor a little bit. The amount of cable doesn't bother me because I got a roll for free. I am still waiting on the alternator brackets, but got the master cylinder today and am going out to put it in shortly. So I don't gave to worry about the venting problem with an optima?
     
  13. newsomtravis
    Joined: Jun 1, 2009
    Posts: 562

    newsomtravis
    Member
    from pville, ca

    i have had optimas in alot of trunks and never had any problems, only time i`ve seen one really gas in on a car with a alternator really overcharging, otherwise pretty clean, and they also don`t have nearly the corrosion problems of normal bateries......good luck
     
  14. pie pie
    Joined: Jun 29, 2008
    Posts: 673

    pie pie
    Member
    from missouri

    Here in a little bit I will snap a pic of it both ways and you guys could give me some input
     
  15. pie pie
    Joined: Jun 29, 2008
    Posts: 673

    pie pie
    Member
    from missouri

    Does anyone know were I could find any terminal covers for a side post? Or I may just make a shield out of aluminum that protects the side I'd the battery
     
  16. nunattax
    Joined: Jan 10, 2011
    Posts: 3,382

    nunattax
    Member

    ive taken the petrol tank from under the seat in my 38 chevy pu.was going to put the battery and electrics under the seat looks like i need a odyssey .the only battery that would start my 88 ci stroker shovelhead long term
     
  17. Mr48chev
    Joined: Dec 28, 2007
    Posts: 35,921

    Mr48chev
    ALLIANCE MEMBER

    Batteries for Audis and *ercedes have a vent tube to run through the floor and they are usually low profile and have plenty of power. They go under the back seats in those cars. Boat battery boxes aren't too spendy and should fit in there and usually have the tie down stuff with the* when you buy the*.

    But fro* experience, batteries in the trunk can be a pain in the***** at ti*es. Tie it down as they like to bounce around if you don't.
     
  18. pie pie
    Joined: Jun 29, 2008
    Posts: 673

    pie pie
    Member
    from missouri

    It will be bolted down better than factory ones
     
  19. Kerrynzl
    Joined: Jun 20, 2010
    Posts: 3,595

    Kerrynzl
    Member

    Go and look in the trunk of most 1992 onwards BMW's, they are trunk mounted
    They clamp the battery down at the lip on the bottom of the battery, and use a plastic cover

    If you're at a junk yard, try and get the factory BMW cables and the little junction box that goes on the inner guard [ for jumper starting ]

    It'll be cheaper than making cables
     
  20. falcongeorge
    Joined: Aug 26, 2010
    Posts: 18,339

    falcongeorge
    Member
    from BC

    Make sure you have a GOOD ground between the engine and chassis as well.
     
  21. pie pie
    Joined: Jun 29, 2008
    Posts: 673

    pie pie
    Member
    from missouri

    [​IMG]

    Here is one option
     
  22. pie pie
    Joined: Jun 29, 2008
    Posts: 673

    pie pie
    Member
    from missouri

    [​IMG]
    This is the other
     
  23. 61falcon
    Joined: Jan 1, 2009
    Posts: 772

    61falcon
    Member

    just be sure to protect the positive cable if you choose no box. you wouldnt want the frame of an aluminum chair or something to come in contact wth it and cause problems.
     
  24. Larry T
    Joined: Nov 24, 2004
    Posts: 7,921

    Larry T
    Member

    A long time ago, I heard it was better to mount the battery crosswise and not lengthwise. The theory was that the force of the battery acid sloshing would not be pushing against the plates on take off. And the plates would not be as prone breaking loose and shorting out. Of course this doesn't have any relavence on a true dry cell battery or an Optima syle battery.
    Take it for what it's worth (not much).
    Larry T
     
  25. pie pie
    Joined: Jun 29, 2008
    Posts: 673

    pie pie
    Member
    from missouri

    Well I'm thinking of making an aluminum sheild in front of the battery with foam backing on it to help since the terminals I'm using can't have covers
     
  26. dmfitz66
    Joined: Feb 6, 2011
    Posts: 6

    dmfitz66
    Member

    I would put rubber caps over the battery terminals also.
     
  27. pie pie
    Joined: Jun 29, 2008
    Posts: 673

    pie pie
    Member
    from missouri

    is there a benifit from putting the solinoid in the trunk?
     
  28. Hnstray
    Joined: Aug 23, 2009
    Posts: 12,357

    Hnstray
    Member
    from Quincy, IL

    Sort of. If the solenoid is in the trunk, near the battery, the only time the heavy cable to the starter is carrying full amperage potential ("hot") is when the starter is activated. You will still need to have a substantial size power lead from the alternator back to the solenoid/battery positive cable in order to charge the battery and/or feed the rest of the vehicle electrical system. If that lead is fused adequately it would protect the system, and in any case, would carry far less amperage than the starter cable if the solenoid is in the front.

    Ray
     
  29. terryr
    Joined: Feb 8, 2007
    Posts: 285

    terryr
    Member
    from earth

    Years ago I bolted the battery to the trunk floor of my camaro, and the flexing cracked the metal all to hell.

    Make sure it is properly supported.
     
  30. oldcarfart
    Joined: Apr 12, 2005
    Posts: 1,436

    oldcarfart
    Member

    and negative (always same size) and if in enclosed space I prefer AGM (Optima) battery for safety. Have you tried a marine battery box?
     

Share This Page

Register now to get rid of these ads!

Archive

Copyright © 1995-2021 The Jalopy Journal: Steal our stuff, we'll kick your teeth in. Terms of Service. Privacy Policy.

Atomic Industry
Forum software by XenForo™ ©2010-2014 XenForo Ltd.