The Project

iTrader: (6)

I'm looking to mount a battery under the front nose somewhere away from the battery tray (maybe under the battery tray. I need the battery tray area to mount (relocate) some of the air conditioning parts and smog pump...just trying to clean up the pass side of the engine bay.

I'm just wondering what battery I can use? I need one that is a small as possible while providing enough Cold Cranking Amps (power) to turn over the 305TPI motor.

Can someone please provide some advise or suggestions.

Also how much CCA do I need?

thanks

Apeiron

Why not put it in the back instead?

AlkyIROC

If it's strictly for street driving, you can mount the battery wherever you want. If you ever want to go to a race track though, any battery not in the OEM location will still need a master switch mounted at the rear regardless of speed, even if you relocate the battery to some other location at the front.

You either leave it in the present location or mount it in the rear as per rulebook specifications. If you never plan on going to the track, mount it wherever it fits best.

The Project

iTrader: (6)

Later on I plan to add a second battery in the rear to power the stereo system.

For now I want to keep the engine battery up front somewhere.

I was thinking of using a snowmobile battery.

Any thoughts on how many CCA I need to turn over the motor?

BluFBdy

iTrader: (1)

look into a stinger battery, theyre pricey and normally used for an aux battery for the stereo like you mentioned but i know quite a few people that use them for car batteries simply to save space, they put out much higher CCA's for their size, you could probably cut the size in half and still get good CCA and all that

either stinger or kinetic, i know stingers are roughly 120ish and they last longer than a normal battery

hope that helps

AlkyIROC

How much cranking amperage you need depends when you plan on using the car. If it's driven in winter at all, I wouldn't recommend anything smaller than 850 CCA. 1000 CCA is better. Even with a V8, if you don't have a lot of power hungry accessories, about the minimum battery size you should use is 650 CCA. Race cars that are only driven in the summer can get away with much smaller batteries.

For a race only battery, something like this will work but don't expect it to start and engine when the temperature is cold outside and don't expect it to maintain a load if you have a lot of accessories drawing amps.
http://www.jegs.com/i/Odyssey+Batter...680MJ/10002/-1

In my race car, I run a late model CS style alternator rated at 130 amps and I have a single 31 series commercial battery in the back of the car. The battery has a 180 minute reserve and around 950 CCA. I forgot and left my water pump and rad fan on for an hour and was still able to start the engine without a boost. I don't have to put a battery charger on the car between rounds and I always have good voltage even at an idle.

dimented24x7

iTrader: (2)

Im getting by with 550 CCA with a free battery that I put in after my delco crapped out. Thats enough to turn the engine over at 10-15 deg F. But, thats with a metric FWD starter with new brushes and a polished commutator, clean grounds, and a battery thats been completely desulfated. Even after all that, I would say that its only JUST enough to get the job done.

Id say use a standard battery and put it in the back out of the way with the proper vented enclosure.