1st Gen R53 Cooper S Most liked posts in thread: High output Alternator

http://www.qualitypowerauto.com/Wire%20Sizing%20Chart%2012V%20DC.htm

wire gauge chart. You would need to figure total amps -- I'm guessing your north of 200A. Back in my electric motor days whenever we needed slightly more Amperage a smaller alternator pulley was used. Here that would be especially useful at idle when the alternator pulley spins slower, thus producing less useful current.

 

At 200A the chart calls for 4 gauge.... Pretty sure the stock isn't that heavy...

 

This is still the best answer. :eek6:

Weight concern......where.....:ihih:

 

Pc1200?

 

Optima is junk.

Are the factory hk speakers not one ohm?

I plan to do a three channel this summer just fronts and a sub. No rear fill.

 

Knowing the plans for what this car is going through... A little extra weight wont matter much!