ALternator mod

I once heard you could run a switch to the alternator to turn it off & reduce drag while at the truck. All this without removing the belt. Anyone know what I'm talking about and how to do it?

You could probably install a microswitch to kick it off at WOT. I'll have to do some head scratching on it, should pick up a few more on the high end.

isnt that the differance between a ac compressor and an alternator, one can get switched on/off clutch, an alternator is always spinning???
that's the way I see it????

<div class='quotetop'>QUOTE(Detroitjoe &#064; Jan 25 2007, 11&#58;12 AM) [snapback]81171[/snapback]</div>

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isnt that the differance between a ac compressor and an alternator, one can get switched on/off clutch, an alternator is always spinning???
that&#39;s the way I see it????[/b]

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Alt is always charging, if you install a microswitch to disconnect the reg it won&#39;t charge...

All you need is a toggle or micro switch to cut off the signal from the little wire coming from the alt to the PCM, right?

would it really make enough of a difference for you guys to go through the hastle?

It probably has more benefits than the TB water bypass. I would think that the alt would eat 3-5 HP. My only concern would be if battery voltage dropped when the switch was off.

I know E46 M3 BMWs kick the alt off at WOT...

It only makes sense to disable the alt and a/c at full throttle. If you could put a clutch on the power steering that would free up some HP, also, if it were to free wheel at full throttle. That&#39;s probably why Honda is experimenting/implementing electronic power steering and electric water pumps instead of engine driven.

A micro switch on the peddel and a NC relay for the sml red wire should work. I know when you have an alternator on a test bench and you energize the field you better have a good grip on it.... they will pull out of your hands