Thread: Swapping water pump pulley?

Why?

I see no reason to do so, you wouldn't gain anything.

04+ cars have a voltage regulator built in, spinning it faster or slower will not make a difference. It only charges when the computer thinks it needs too. Voltage will at random drop to 13 volts or be as high as 15 at any given time.

Originally Posted by Fivefingerdeathpunch

Why?

I see no reason to do so, you wouldn't gain anything.

04+ cars have a voltage regulator built in, spinning it faster or slower will not make a difference. It only charges when the computer thinks it needs too. Voltage will at random drop to 13 volts or be as high as 15 at any given time.

Maybe I missed something but what does voltage have to do with a water pump pulley?