Thread: Alternator Mods
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Old 06-16-2008, 08:59 AM   #4 (permalink)
Shawn D.
Harebrained Idea Skeptic
Join Date: Jun 2008
Location: Alpharetta, GA
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The White Car - '84 Mercedes-Benz 300td
90 day: 28.84 mpg (US)

The Blue Car - '86 BMW 535i
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Originally Posted by BITBY View Post
... any fuel savings you may experience may be trumped by a much shorter battery life.
... and reduced FE. It used to be common to run without an alternator in certain racing circles, but it was found that the reduction in ignition efficiency (~14V from the alternator vs. 12.6 from a fully-charged battery) actually hurt power. Thus, I'm dubious that disconnecting the alternator is a good idea.

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