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farmwalker 01-05-2013 04:09 PM

Battery Relocation Quesions
 
Hi guys,

I'm going to be relocating my battery to my trunk in my 77 camaro and I know what to do about a box and venting it. What I'm wondering is what gauge cable should I use for the cable to the starter and what guage wire should I use for my charging wire?? Also what size fuse should I use for both the starter cable and the charging wire?

Thanks!!

hcompton 01-05-2013 04:44 PM

Quote:

Originally Posted by farmwalker (Post 1631002)
Hi guys,

I'm going to be relocating my battery to my trunk in my 77 camaro and I know what to do about a box and venting it. What I'm wondering is what gauge cable should I use for the cable to the starter and what guage wire should I use for my charging wire?? Also what size fuse should I use for both the starter cable and the charging wire?

Thanks!!

There is no fuse for a starter. You need a battery disconnect. As for wire size you need basicly double what ypu have by guage. I think normal battery cables are 4 guage you would need 2 guage. They make some stuff for stereo guys that works real well and is easy to route and bend around stuff. It is also bigger but not really as big as 2 guage should be so it works great.

Main power should be on a relay. You can use a fuse for the mains but depending on the system you may need a pretty big fuse. Again i would go with the stereo install type 50-100 amp fuse. At 100 amp it could still badly burn wires but a dead short will pop it instantly.

Also be sure to cover the wires with shrink wrap and a loom. And run the under the car inside the frame rail tied every 12 inches with zip ties or bolted down insulated clamp. Make sure it does not run thru any hole that is not covered by a groumet.

farmwalker 01-05-2013 06:41 PM

Quote:

Originally Posted by hcompton (Post 1631016)
There is no fuse for a starter. You need a battery disconnect. As for wire size you need basicly double what ypu have by guage. I think normal battery cables are 4 guage you would need 2 guage. They make some stuff for stereo guys that works real well and is easy to route and bend around stuff. It is also bigger but not really as big as 2 guage should be so it works great.

Main power should be on a relay. You can use a fuse for the mains but depending on the system you may need a pretty big fuse. Again i would go with the stereo install type 50-100 amp fuse. At 100 amp it could still badly burn wires but a dead short will pop it instantly.

Also be sure to cover the wires with shrink wrap and a loom. And run the under the car inside the frame rail tied every 12 inches with zip ties or bolted down insulated clamp. Make sure it does not run thru any hole that is not covered by a groumet.

Ok I'm going to run a 2 Gauge cable for the starter. But couldn't you put a fuse back by the battery inline; because we never plan on a wire shorting out, other wise we wouldn't need fuses. Also what size wire should I use for the wire to the alternator??

hcompton 01-05-2013 06:57 PM

Quote:

Originally Posted by farmwalker (Post 1631060)
Ok I'm going to run a 2 Gauge cable for the starter. But couldn't you put a fuse back by the battery inline; because we never plan on a wire shorting out, other wise we wouldn't need fuses. Also what size wire should I use for the wire to the alternator??

Is the engine high compression?

The fuse would need to be pretty big one. Race cars use a kill switch located in the rear trunk panel so it can be access from outside the car. Also have it close to the battery. That way you can just turn the switch when you get out of the car. Also rules for most faster drag cars.

Also you can just run the alt wire to the starter relay. Do you plan to use a ford style solenoid kit on the firewall to start the car.

Allstar Performance Solenoid and Wiring Kits ALL76202 - SummitRacing.com

hope this helps.

BUFFALOBILLPATRICK 01-05-2013 07:18 PM

Yes, use thicker wire as distance is longer.
I used 00 inclosed in a rubber garden hose inside frame. Grommet openings.
I also used a 250 amp fuse back by gel battery.

vinniekq2 01-05-2013 08:12 PM

use welding cable,works great.Also run 2 grounds.one to the frame and a separate wire to the block

hcompton 01-05-2013 08:12 PM

Quote:

Originally Posted by BUFFALOBILLPATRICK (Post 1631076)
Yes, use thicker wire as distance is longer.
I used 00 inclosed in a rubber garden hose inside frame. Grommet openings.
I also used a 250 amp fuse back by gel battery.

Will 250 turn the stock starter? Seems like it would pop the first time the engine hot started and turned a little slow.

If that works for you then putting the relay next to the battery will work as well. Then the heavy guage wire does not need to be hot more thana few inches past the battery.

But with high compression engine you may need to run a disconnect or a larger relay and mini starter.

farmwalker 01-05-2013 08:49 PM

Ok. So this is what I think I'm going to do.
2 Gauge wire with a 250 AMP fuse to a cut off switch. Then from the switch I'll run a 2 gauge wire to the starter and a seperate wire as well from the switch to the alternator with a 100 AMP fuse. (I'm doing this because I've heard it's better to run a seperate wire and since I'm doing this, I figure I might as well do it the best way the first time.)

But what size wire do I use to run to the alternator? It doesn't have to be any where near a 2 gauge for goodness sake, right??

Also whats the highest compression ratio I can have before I cant use my stock starter?

Thanks guys!

hcompton 01-05-2013 09:05 PM

Quote:

Originally Posted by farmwalker (Post 1631118)
Ok. So this is what I think I'm going to do.
2 Gauge wire with a 250 AMP fuse to a cut off switch. Then from the switch I'll run a 2 gauge wire to the starter and a seperate wire as well from the switch to the alternator with a 100 AMP fuse. (I'm doing this because I've heard it's better to run a seperate wire and since I'm doing this, I figure I might as well do it the best way the first time.)

But what size wire do I use to run to the alternator? It doesn't have to be any where near a 2 gauge for goodness sake, right??

Also whats the highest compression ratio I can have before I cant use my stock starter?

Thanks guys!

Starter depends on the timing and compression of the engine if it doesnt start slow when hot i would think your ok.

10 is stock and may work but 8 would be best for alt wire. If you have a lot of assesories you may want to use high quiality 8. You can buy a amp installation kit with fuses and wire pretty darn cheap might be the cheapest simple solution

One wire is fine unless your going to use a solienoid kit and not run full voltage on the larger wire all the time. There is no difference electricity always takes the path of least resistence.

Project89 01-05-2013 10:20 PM

instead of fuses u can buiy circut breakers from any real car audio place thse things come in 100/150/200/250/300/400 amp , the big fuses starting at 100 amp and up run about 22 bucks each and arent easy to find if u happen to pop a fuse and need a new one

the big circut breaker should run about 50-100 bucks and ull only ever need one most of them will accept 0 gauge cable directly and some even bigger


if u buy car audio amp cables be sure to buy high quality cables

good 8 gauge car audio cable will out perform cheap car audio 4 gauge

farmwalker 01-06-2013 12:00 AM

Cool guys. Thanks for all help. I think I know what I want to do now. All of your advice was helpfull. I like the idea breakers instead of fuses too.

malc 01-06-2013 12:12 AM

I relocated my battery and installed the solenoid alongside it using MadElectrical´s kits.

REMOTE STARTER SOLENOID

Trunk Mount battery helper kit.

Website has plenty of info too.

68NovaSS 01-06-2013 01:13 AM

MALC's link specs 1/0 wire to the starter, I use 00, not fused, in my blower car, trunk mounted battery, wrapped in hose running along the inside frame rail.

malc 01-06-2013 08:12 AM

This is my setup in the rear of my 3rd gen Camaro.
Battery box is a Summit piece, with vent tube.

http://www.hotrodders.com/gallery/da...ox_Install.jpg

sedanbob 01-06-2013 09:57 AM

To minimize voltage drop over the distance, I suggest 1/0 welding cable. Run from positive to starter, and negative to a bolt on the bellhousing. As was suggested, support it along the way, and protect it anywhere it goes through a hole or by a hard edge. Use 8 gauge from the alternator to the starter. Run grounds from the bellhousing bolt to the chassis, and chassis to body. The welding cable is fine wire so it's nice and flexible. I crimp and solder lugs on the ends, and cover the joint with heavy duty shrink tube. A battery disconnect switch is a good idea, as are auxillary battery terminals under the back of the car, near the battery.


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