I am going to use a optima red top and a marine box. mount it to the floor in the bin. what size battery cable should I use.

I used the typical 4 gauge wire that you get in an car amp installation kit. The one I used had like 20 ft of red 4 gauge, connectors etc. I bolted the negative cable to the seatbelt bolt.

I have seen people use 0 or 00 arc welding wire. It has a cross section of @ 1/2in.



Raul

I'm not sure which it is, its sitting on the shed floor waiting for an engine to be put with. https://www.nopistons.com/forums/pub...1047683561.gif

I got it for AU$60.

Story:

My friend owns a RAC battery franchise, some asian guy called him out cos he's battery was flat, turns out his g/f had been sitting in the car with the stereo cranked for 3 hours (2x Alpine V12 amps) and it died. He bought a new battery for $100, my friend took the old one (which happens to be the odessey) and says bye. My friend (knowing they're good for 300-400 full cycles), takes it home, charges it on the battery charger, it tests perfect, then sells it to me for $60. Win, win.

RX7CMS



Yo don't need any sort of box w/ the optima red top battery. Thats why it is what it is.



Its like waterproofing plastic.... You dont' have to do it.



~Geoff

true, but there's still a small amount of gas that is vented from it. (see small round

spongy holes in top).

This is from the Optima site Gas Leakage FAQ



So a "vented to atmosphere" box would be a good thing. https://www.nopistons.com/forums/pub...#>/biggrin.png

I've never known anyone to run an optima in a box. *shrugs* go for it if you want, i'm not going to.



~Geoff