I'm bout to upgrade the pulley on my 02 6spd.. Was looking aroun and figured the best route to go was just to get a lightweight stock size pulley instead of underdriving it. (Have sound system) I seen a Ralco Lightweight pulley on Ebay but they havent accected any of my offers. So I might just ubderdrive it.. What yall think would bring better results???

 

IIRC, youre not supposed to change your UDP for a lightweight or smaller pulley if you a system.

 

I fully understand not using a UP with a system, but why not a lightweight pulley?

It does not change the diameter of the pulley. It reduces the rotational mass of the pulley. The pulley system would still get the same belt size therefore not changing any of the charging characteristics...

 

Exactly.. Thats why I said LIGHTWEIGHT but I cant decide which one to get

 

no idea. Something I remember reading here a few years back. Hence the IIRC (if i remember correctly)

 

I would just go to the Nissan dealership and get a stock pulley and change it out for the old one.

 

if you are already swapping out the belts then maybe but that mod is not worth my time for the hp gain on its own

 

I have had the stillen UDP for about a year and a half no problems!

 

What is that solving??

 

Spark plugs n spacers will b put on the same time I get the pulley put on if I get it..

 

There is no HP gain from a pulley. Never has been and never will be. Not reason for installing one...