DDM Project 370Z

M.Bonanni · 07-08-2009, 02:31 PM

Quote:

Originally Posted by semtex

But doesn't pulley diameter come into play as well? Smaller diameter = less power diverted to the auxiliary systems, right? I think that's what wstar is getting at.

Yeah it does also have effect but if its also heavier than the UR one then it will be a wash. Even if they weigh the same, I would guess that it will make 1whp difference max, or less. You will gain more from less weight than less parasitic drag. Like I said, we'll see once I put the UR pulley on my car. I personally prefer to use a stock diameter pulley to maintain factory accessory outputs from the alternator, power steering, etc.