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On 2001-12-21 22:57, Badkharma wrote:
Ok, I understand that (thanks!), but if you slow down those items, won't it produce less output (ie, alternator)?? It just seems to me that you're stealing power away from those items that require it. Basically what I'm asking is, do the underdrive pulleys reduce the REQUIRED output of those items, or is it reducing EXCESS power to those items??
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When you replace the underdrive pulley to a smaller one, you should replace the water pump pulley to a larger one. Think of your bicycle and it's gears. When you have a big gear in the front and a small one in back, its really hard to pedal, right? But when you increase the size of the rear gear, it gets really easy to pedal.
So, in this case, you replace the underdrive pulley with a smaller one and replace the pump pulley with a larger one. This way, the engine doesn't have to work as hard to turn the units at the same rotational speed (or close to it I guess).
Hope this helps.