rear battery relocation question ?

[ValerianMagnum]

hi guys ! my friend relocated my batterie in the trunk for the weight ratio.. ive seen a lot of mopar cars who ad the battery on the passenger side .. is it that bad that i was installed on the driver side ? do i have to put some weight on the on the other side ?

 

[ValerianMagnum]

 

[67Dart273]

Well it belongs on the right side. Adding weight when you can move the battery is well.....adding weight.

IF you expect to race that thing, you need to consult the NHRA rules, or at least the rules under which you are going to race, for needed safety concerns

I believe you either have to have the battery in a METAL box which is externally vented, or a plastic box with an added firewall behind the rear seat.

You need a battery disconnect which will ALSO KILL THE CHARGING SYSTEM so that if the switch is pushed (and it MUST PUSH, not PULL) to off, the engine will die. The disconnect must be in the positive lead, not the ground.

One easy way to do this is to buy a Cole Hearse disconnect with two large and two small connections. You can use the two large ones to break the battery, and the two small ones you can ground one, run the other up front on a small wire to operate a relay and break the ignition/ alternator field.

 

[OUTLAW]

my man above nailed it

 

[ValerianMagnum]

so its not affecting anything.. i wanted the car to be better proportionate

 

[1968FormulaS340]

It would be better to have it on the other (passengers) side.

 

[ValerianMagnum]

why and whats the diffenrence ? 67Dart273 : said is on the good side , and thats the reason on my thread.. i was asking why other people are installing it on the passenger side

 

[OneOfMany]

Not 100%, but I think it has to do with the fact that when you launch, the driveshaft/pinion rotation will tend to cause the right-side to lift. Putting the battery on the passenger side simply helps keep that from happening as much

Grant

 

[67Dart273]

Yup. Every rear wheel drive car I've ever seen turns the engine CW viewed from the front. I don't know if some rear engine cars are different or not.

The twist of the torque of the driveshaft literally tries to lift the rear axle off the ground, or plant that side of the body down on the axle, depending on how you want to look at it. "Torque reaction."

 

[JRDART]

Plus on top of that what happens if you get a gas leak and the battery sparks???? Its a long shot but your filler tube is farther from the passengers side than the drivers side lol

 

[Old Tired Rebel]

If you are not going to drag race does it matter for handling?

 

[71beater]

67Dart273 nailed the whole NHRA aspect of this (not that I agree with them on switching the + cable... Maybe someone here can give me a GOOD explanation on that. But hey, rules are rules.).
Now, weight distribution? Why would you want to add weight on your already heavy drivers side? No offense, but YOUR body weight is already there... and you're not changing that fact too easily... Your left/right weight bias would be better with it on passenger side.
Another thing 67Dart273 hit on is engine rotation. Your rear axle isn't just applying power to the wheels... The whole housing is trying to rotate under your car, just as the driveshaft is. That's the reason open rears light up the right rear tire. They're planting the left wheel hard and actually trying to lift the right.
Just a little more food for thought.

 

[67Dart273]

I don't particularly agree that switching the positive cable is safer or better, but IF you want to meet NHRA, THEY are the ones that specify switching the positive cable

EDIT sorry I mis read. Yeah. I agree with you here on that.