Originally Posted by Acidtc
Yeah I'm considering finding a lightweight crank pulley of stock diameter, on the original alt I had the 20% overdrive alt pulley assuming it would balance out the lack of rotation from the crank
On the original alt you could do that as it didn't take as many alt rpm to kick in.
The problem with that is with high output alts the low alternator rpm output is sacrificed for more peak output at higher alt rpms. A overdrive pulley is used by default to counteract the weak output at idle by spinning the alt faster.
Odd's are you have a 1.7'' diameter pulley on there now, as thats generally what we ship. Thats as small as we can get our hands on as far as i know. If there is something smaller it wont be much, maybe 1.6-1.65. Going any smaller youd need to use something stronger than hardened steel, which you'd come out cheaper putting a turbo kit on your car.