Quote:
Originally Posted by scott_fx
why do you feel that higher voltage is superior for cranking? current would be the main factor for "better" cranking.
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Ran 16 volt batteries in all my race cars. No alternators. Your gauge lighting will be noticeably brighter, and the starter will turn the engine over very quickly.
When I bought my first 16 volt battery, the salesman told me "if the engine is seized and you try to start it, it will spin the entire car over". Of course he's joking, but he's trying to emphasize to me about the difference in starter speed. I didn't believe him. Until I installed the battery. Wow, what a difference.
The real reason we ran them was even if fully discharged at the end of a big event (125 laps) the batteries still produced around 12 volts.
And my cars would turn another 300 rpm on the straights, with only a battery change. My brother even said that the exhaust note sounded different with the 16 volt units.
Our cars had no electronics, except ignition systems. Our radios had their own batteries. I have no idea what a 16 volt battery would do to an ECM, or other electronics, so do your homework if your putting a 16 volt battery in a street car.