battery relocation ? - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

MakotoS13 · 07-04-2004, 09:37 AM

i'm looking at battery relocation kits and all of them have like 20ft of positive cable and only 3 ft of negative cable.

why is this and what would i do with the extremely short negative cable?

element240 · 07-04-2004, 09:46 AM

i would assume the short black (negative) wire would connect to the battery and then to the chassis. therefore it does not need to be that long.
electrical circuits can ground thru the chassis and then get back to the battery that way.

citizen · 07-04-2004, 11:01 AM

yep chassis ground circuit.

MakotoS13 · 07-04-2004, 11:37 AM

thanks guys. i've also heard that gasses will permeate right through plastic and that a metal (and much more expensive) box is necessary for safety reasons... is there any truth to this? i dont wanna drop 100 bones on a metal box but if that's what i gotta do....

*SaintlyCharBoy* · 07-04-2004, 04:11 PM

depending on what yoru final goal is, you can go to just about any marine store and pick up a polyurethane box for 10-20 dollars. the problem with this is that for auto-x you need to have an added battery restraint (j-bars) for a lot of other racing you need an external electrical kill switch and some times an externally vented box.

if you run a sealed lead acid, or an optima, or a dry cell battery, they do not outgas, and therefore they do not have gasses that will permeate anything

i went with optima yellow if it helps

MakotoS13 · 07-04-2004, 04:25 PM

thanks i'm getting this:

http://www.jegs.com/cgi-bin/ncommerc...26&prmenbr=361

and eventually a red top optima when i get some more cash. i plan on eventually doing road racing and time attack stuff while being streetable.

sure would hate to pass out on a 120 mph straight

mjjstang · 07-04-2004, 05:53 PM

are you doing a sr swap. I bought a battery box and then when I found out that I had to drop the fuel tank to get any kind of nice mount going, I just decided to get a miata battery.

drift into a curb · 07-04-2004, 06:13 PM

No need to drop the fuel tank at all. Also there's a nice ground point on the back right side of the trunk.

mjjstang · 07-04-2004, 06:32 PM

well then without dropping the tank how do you tighten the bolts. Im guessing your talking about using self tapping screws or something.

MakotoS13 · 07-04-2004, 07:20 PM

i'll be eventually running a dohc KA-T setup with nitrous for either cooling or an extra kick in the pants. anyhow, what would that have to do with this?

i was just gonna drill some holes and bolt the hooker up. don't see any reason to drop the tank.

07-04-2004, 09:37 AM	#1
MakotoS13 BANNED Join Date: Jan 2004 Location: Texas Age: 42 Posts: 4,205 Trader Rating: (0) Feedback Score: 0 reviews	battery relocation ? i'm looking at battery relocation kits and all of them have like 20ft of positive cable and only 3 ft of negative cable. why is this and what would i do with the extremely short negative cable?

07-04-2004, 04:11 PM	#5
SaintlyCharBoy Premium Member Join Date: Jan 2002 Location: Bow, NH Age: 43 Posts: 849 Trader Rating: (1) Feedback Score: 1 reviews	depending on what yoru final goal is, you can go to just about any marine store and pick up a polyurethane box for 10-20 dollars. the problem with this is that for auto-x you need to have an added battery restraint (j-bars) for a lot of other racing you need an external electrical kill switch and some times an externally vented box. if you run a sealed lead acid, or an optima, or a dry cell battery, they do not outgas, and therefore they do not have gasses that will permeate anything i went with optima yellow if it helps __________________ 92 vert - KADE + VH41 + GM MA5 = too many parts in the garage 95 base - retired

07-04-2004, 05:53 PM	#7
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,654 Trader Rating: (5) Feedback Score: 5 reviews	are you doing a sr swap. I bought a battery box and then when I found out that I had to drop the fuel tank to get any kind of nice mount going, I just decided to get a miata battery. __________________ I was going to, but I can not think of a sig less than 75 characters.

07-04-2004, 06:13 PM	#8
drift into a curb Post Whore! Join Date: Mar 2002 Location: Seoul, South Korea Posts: 2,870 Trader Rating: (5) Feedback Score: 5 reviews	No need to drop the fuel tank at all. Also there's a nice ground point on the back right side of the trunk. __________________ Go big or go home!

07-04-2004, 06:32 PM	#9
mjjstang Post Whore! Join Date: Apr 2003 Location: Michigan Posts: 2,654 Trader Rating: (5) Feedback Score: 5 reviews	well then without dropping the tank how do you tighten the bolts. Im guessing your talking about using self tapping screws or something. __________________ I was going to, but I can not think of a sig less than 75 characters.

07-04-2004, 09:46 AM	#2
element240 Zilvia Addict Join Date: Jan 2004 Location: MI Age: 39 Posts: 735 Trader Rating: (0) Feedback Score: 0 reviews	i would assume the short black (negative) wire would connect to the battery and then to the chassis. therefore it does not need to be that long. electrical circuits can ground thru the chassis and then get back to the battery that way.

07-04-2004, 11:01 AM	#3
citizen Zilvia FREAK! Join Date: Jan 2003 Location: Bay Area Posts: 1,240 Trader Rating: (0) Rides Gallery: citizen Feedback Score: 0 reviews	yep chassis ground circuit.

07-04-2004, 11:37 AM	#4
MakotoS13 BANNED Join Date: Jan 2004 Location: Texas Age: 42 Posts: 4,205 Trader Rating: (0) Feedback Score: 0 reviews	thanks guys. i've also heard that gasses will permeate right through plastic and that a metal (and much more expensive) box is necessary for safety reasons... is there any truth to this? i dont wanna drop 100 bones on a metal box but if that's what i gotta do....

07-04-2004, 04:25 PM	#6
MakotoS13 BANNED Join Date: Jan 2004 Location: Texas Age: 42 Posts: 4,205 Trader Rating: (0) Feedback Score: 0 reviews	thanks i'm getting this: http://www.jegs.com/cgi-bin/ncommerc...26&prmenbr=361 and eventually a red top optima when i get some more cash. i plan on eventually doing road racing and time attack stuff while being streetable. sure would hate to pass out on a 120 mph straight

07-04-2004, 07:20 PM	#10
MakotoS13 BANNED Join Date: Jan 2004 Location: Texas Age: 42 Posts: 4,205 Trader Rating: (0) Feedback Score: 0 reviews	i'll be eventually running a dohc KA-T setup with nitrous for either cooling or an extra kick in the pants. anyhow, what would that have to do with this? i was just gonna drill some holes and bolt the hooker up. don't see any reason to drop the tank.