When moving the battery into the trunk from underhood, what size cable is reccomended ?
When moving the battery into the trunk from underhood, what size cable is reccomended ?
2 Gauge is fine. That is what BMW uses in their cars fwiw. I used a cable kit from Summit Racing when relocating the battery in my RX7. http://www.summitracing.com/search/Part-Type/Battery-Cables/
Make sure to use a circuit breaker on the positive cable near the new battery location.
Four gauge would likely do, if you use a high quality cable. I believe that my Miata uses something in the range of 8 gauge. Shorter run than many cars, bur still....
What car? I would imagine the cables for a Cadillac stretch limo with a 500ci engine would need to be heavier duty than those for a Yugo.
I started with the Summit relocation kit too. 2ga is more than enough for my 4 cylinder.
See if you can get the battery cables from a 89-91 E30, they have batteries in the trunk stock. Good, cheap option.
Gauge and length are the factors. Longer length needs larger wires to minimize voltage loss to heat in the circuit. Thus a Miata with a short run can get by with 8 gauge, whereas the same system with a longer run could need a 4 guage or bigger to have the same overall voltage drop as the 8 ga short run.
It would be for a ZX2.
go with #2 welding cable and you'll never have a problem. Welding cable is more flexable then regular. Use Moroso's end kits they use a farell to clamp the cable and never rot out as there tined brass. http://www.jegs.com/i/Moroso/710/74175/10002/-1 for top post http://www.jegs.com/i/Moroso/710/74170/10002/-1 for side post.
Or buy the kit with same ends but cable at welding supply is cheaper.
Cable from welding shop ends from your local speed shop or jeg's.
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Can a guy go too big?
belteshazzar wrote: Can a guy go too big?
technically yes but most would never see the loss in efficiency
belteshazzar wrote: Can a guy go too big?
depends on how you use it 
I would be careful of how you route it in the rear for certain!
belteshazzar wrote: Can a guy go too big?
Larger cables won't hurt anything, other than adding weight, being harder to route through the car, and costing more.
Larger cables won't hurt anything, other than adding weight, being harder to route through the car, and costing more.
Which can definitely be significant.
I second the welding cable. Thats what i used in my aries.
John Brown wrote: I would be careful of how you route it in the rear for certain!
That's what she said 
+1 on the welding cable. When I did the battery relo in my FC RX7 I found a guy selling 0ga welding cable on CL. Picked up 20ft for something like 20 bucks. Got lug ends, solder plugs and a 150amp push-to-trip breaker from Del-City (delcity.com) to round out the package. Worked out very well.
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