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Corsa Sport » Message Board » Help Zone, Modification and ICE Advice » battery change on corsa C sxi » Post Reply
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Dom |
posted on 7th Jan 05 at 12:06 |
quote: lol...yea im wrong mate :lol: i wasnt thinking correctly and this website was chatting shite then - my old man confirmed that the bigger the cable, the less resistance, therefore less of an voltage drop over any given meter (between different sized cable) etc etc However, alot of cable even stinger/JL etc stuff is still rated in watts, as its generally easier - otherwise you would have to add all of the Amps required + overheads etc etc but yea, oh wells, you learn something new everyday :lol: :thumbs: | |
corsacman |
posted on 6th Jan 05 at 22:14 |
Dom, this is the reply from "black-cat" about the above you stated. He is an physics wizard. quote: | |
corsacman |
posted on 6th Jan 05 at 18:02 |
quote: Not really sure, never heard off this in my life. Ill ask a chap called BLACK-CAT from talkaudio he will be able to give us a straight answer. cheers | |
Dom |
posted on 6th Jan 05 at 13:17 |
quote: well if your gonna be drawing alot of current, then bigger the cable on the "BIG 3" will help shite loads. As for power cable, you are correct that bigger the cable the harder to route. However, it not always wise to use the biggest cable you can afford, as if you think about it - If the cable is too thick for the current being drawn, the electrons have so many different paths within the wire to take that overall power is reduced (been reading up about it ;)). Therefore you need to select the correct cable gauge for your setup, hence why ICE power cable is rated in watts rather than current load. Obviously you can get away using huge power cables if you use a split charging system because, as you rightly said, the length of the cable will be too short for any major voltage drop :thumbs: | |
corsacman |
posted on 5th Jan 05 at 23:52 |
quote: Thats an overkill. As the lenght of the cables are small the voltage drop over them is minimal. As for the main power feed being to big, thats nosense. The bigger the better, only thing is 0 awg can be hard to route and get through the bulkhead without drilling a hole in many vechiles. | |
Dom |
posted on 5th Jan 05 at 21:50 |
quote: a few changes - i would use 1/0 on the 3 wire changes underneath the hood, as thats where majority of the high current will be. As for the main power feed to a dizzy block in the back, its not always wise to go for the biggest due scientific reasons (canne remember the post exactly, but it did make sense at the time lol - ill try hunting it out :)). Personally for your setup, 4 gauge would be alright :) But at the max, i would use 2 gauge :thumbs: | |
Martin |
posted on 5th Jan 05 at 21:02 |
ledgend :thumbs: | |
corsacman |
posted on 4th Jan 05 at 22:20 |
First thing is do upgrade the front battery to the best one you can afford and will fit. Then upgrade the 3 wires under the bonnet to either 4 or 2 gauge. Make sure the cable that is supplying powering to your amps is adaqute to carry the current without to much of a voltage drop. If i was you i would use either 0 or 2 gauge to a distribution block then two small 4 gauge runs to each amp. After all this measure the voltage accross both amp terminals, and if its low then upgrade the ALT. Vauxhall do ones that are 100 AMPs that will be fine but for your system i think you will be fine to be honest. | |
Martin |
posted on 4th Jan 05 at 21:11 |
for an alternator upgrade, should i just get one off a diesel corsa, or should i go hunting for a non vauxhall part that perhaps produces more amps? | |
Richie |
posted on 4th Jan 05 at 09:24 |
Like Dom and corsacman have said, with big power systems (anything over 500wRMS imo) then you will be looking at an alternator upgrade. If your not bothered about getting the full power out of your system, or bothered about dimming lights, then just do it how you want. | |
corsacman |
posted on 4th Jan 05 at 09:19 |
You might and probably want need an alternator upgrade. I know people who run 4Kw (rms) through there stock charging systems. 100 Amp alt for the Cosra is around £90. | |
Martin |
posted on 3rd Jan 05 at 23:06 |
dont see many corsa c's up scrappies thou mate. a trip to motorbodies is on the cards, great fun... cheerz for ya help mate, should help me sort my life out :thumbs: | |
Dom |
posted on 3rd Jan 05 at 22:34 |
quote: well no offence to him, but he bodging it :rolleyes: and a bigger battery will fry everything ?!?!?!?!?! :lol: if you wack in a 24volt battery, yea maybe, but going for a more powerful battery (bigger Ah) won't fry anything, it just means a) it can hold more juice and b) supply more juice for longer periods at X Ah etc etc However, having a bigger puts strain on your alternator as well, so you should really replace your alternator anyways. like i said, the cap is the last thing you do...so if your suffering from dimming after replacing the battery and doing the "big 3" (cables under hood), then you will have to replace the alternator - like i said, get something from one of the bigger versions (go scrappies or something :)). once you have sorted the dimming, then you can pop in a cap to smooth things over and take some of the strain away from the battery, and keep the voltage up abit :) A cap shouldnt be used to solve dimming of lights etc as it just put strain on your whole electrical system of the car. but yea, 8 gauge is fine mate :) But like i said, i would run 4 gauge to your boot, then use a dizzy then out to two sets of 8 gauges to your amps :) - you might also want to drop the whole lot (ie: 2 gauge into boot and 4 gauge to amps) as im not to sure on how well the 8 gauge will like your amp as i have a feeling its gonna be heavy on the old juice :o as a last note mate, its horses for courses isnt it? spend the cash and you will have something that will last and happily supply the power, and probably help towards future upgrades :thumbs: | |
Martin |
posted on 3rd Jan 05 at 21:37 |
Reply to DOM: | |
Richie |
posted on 3rd Jan 05 at 21:09 |
hmm i see a crispy new year coming for that car :lol: | |
Dom |
posted on 3rd Jan 05 at 19:37 |
A) who the fuck told you anything about caps | |
corsacman |
posted on 3rd Jan 05 at 18:31 |
16 Gauge is far to fine to carry current to your amp to the battery. What you want to do is run 0 awg to a distribution block and two short 4 gauge runs to the amps. This way you will get minimal voltage drop. Look at www.cablesexpress.co.uk for cheap cable. £6.50 p/m for 0 awg :D Buy around 4 Meters for power and earth and about 2/3 meters of 4 gauge. | |
Martin |
posted on 3rd Jan 05 at 17:39 |
i've already got the 6x9's though mate :| | |
corsacman |
posted on 3rd Jan 05 at 17:25 |
You will not need a Cap, there useless, same goes to 6x9's. They will drag the sound stage backwards and intefere with the subwoofer. Have you got any front speakers?? If not invest in components and get a nice amp to power them. As for electrical upgrades to your system, make sure you are running 0 awg to a dissy block then some 4 gauge to your amps. Upgrade the wires under the bonnet, such as the Alternator (+) to battery (+)Engine Block to chassis and battery (-) to chassis with 4 gauge or 2 gauge wire. Then if you are still getting voltage problems invest in a new battery, maybe one from a Corsa Diesel (if it fits) or go to Halfords and get one of there Heavy Duty batteries for the Corsa. | |
Martin |
posted on 3rd Jan 05 at 16:04 |
going to have an rockford x6 amp. |