 Increasing the size of wiring on the Starter Battery Lead, True or False? |
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| bandjoey |
 Mar 3 2011, 04:48 PM
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#1
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bandjoey  Group: Members Posts: 4,934 Joined: 26-September 07 From: Bedford Tx Member No.: 8,156 Region Association: Southwest Region  |
I read online where some car builders replaced the battery to starter lead wire with a larger size wire, to improve starting power.
Anyone do this? Worthwhile? What size wire, if so? Thanks |
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| Mike Bellis |
Mar 3 2011, 09:12 PM
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#2
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Resident Electrician Group: Members Posts: 8,347 Joined: 22-June 09 From: Midlothian TX Member No.: 10,496 Region Association: None 
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The Ohms law answer is yes, a larger cable will flow more current due to less resistance in the larger cable. Kirchoff's law also applies; If your cable drops 2 volts, you starter will only receive 10 volts under load. Voltage drop can ONLY be measured under load. With no load, the starter voltage will be 12 volts.
The real problem is corrosion. As the existing wires age, they develope corrosion and resist current flow. That causes poor starting conditions and other problems. Battery cables corrode faster than any other wire in your car. Even if they look good, they may be bad. If they are over 10 years old, change them. |
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Posts in this topic
bandjoey Increasing the size of wiring on the Starter Battery Lead Mar 3 2011, 04:48 PM
ventedrib
I read online where some car builders replaced th... Mar 3 2011, 04:59 PM
Drums66
I read online where some car builders replaced t... Mar 3 2011, 05:40 PM jsayre914 I just replaced mine recently with a 0guage power ... Mar 3 2011, 05:21 PM Andyrew I've always given the starter a better ground ... Mar 3 2011, 05:34 PM 914.SBC
I've always given the starter a better ground... Mar 3 2011, 05:36 PM Cap'n Krusty It's essentially true, but 914s already have a... Mar 3 2011, 05:58 PM McMark Gotta wonder how many people who hear a benefit ar... Mar 3 2011, 06:53 PM |
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