Alternator Options?

[infernosg]

Originally Posted by TitaniumTT

Unless it's severely underdriven, output won't change much, idle is a different situation though which is why I prefer to NOT underdrive alternators. I also think that people that remove airpumps without a solution are asking for problems, but that's just me.

It would be nice if there were a smaller alternator pulley available to offset any underdrive caused by a reduced main pulley diameter. I'm underdriving my water pump to avoid issues at engine speeds over 8000 RPM. In order to increase the water pump pulley diameter you have to reduce the main pulley diameter so even though my alternator pulley is the stock diameter the alternator is still underdriven.

Originally Posted by TitaniumTT

Also.... I don't know which one it is, that diagram MAY be it..... double check the wiring diagrams with the FSM. I have had sooooooo many problems with alternators in the past because someone posted up a diagram like that on TeamFC3S back in the day that I printed out and it was WRONG!!!!! What I'm going to do now is find an FD or S5 connector and wire it up ONE TIME and mark everything..... I don't know how many alternators I've blown because the INTERWEBZ WERE WRONG!!!!!

Based on MY understanding of the S4 and S5 wiring diagrams it looks right. It has the field signals (L terminal) coming from the dash (idiot cluster in S5 and CPU in S4) and the sense signals (S on S5 and R on S4) coming from 12V sources (constant on S5 and switched on S4).