I did consider an aftermarket pulley, but bigger gains are to be had by disabling the alt's field windings, virtually eliminating parasitic load of the engine, and charging off the grid. The pulley is less effective. But I suppose if you have it already, you could put it to use: fully charge your battery off the grid each night and let the pulley do its part?
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See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.
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