My 03' MCS has all of the JCW stuff...exhaust, JCW IC cover, JCW Tune Kit Tag on the valve cover.....but I'm wondering if it has the 11% JCW pulley, or the stock non-JCW MCS pulley. I can get a tape measure in and measure the diameter of the pulley (the other flange), and it's right at 2.5"..or 63.5mm. This is the outer diameter of the flange that is on the pulley...not the diameter of the surface the belt rides on.

Can someone tell me what pulley I have on my MCS?

Thanks!!

 

Nobody's got a stock pulley laying around that they would measure for me?? I just need the outside diameter of that outer flange. I can't really get to the area that the belt rides on since it's got a belt wrapped around it!

Thanks!

 

If your Mini is JCW then I would not worry to much about the pulley, I doubt the previous owner pulled it off for a stock pulley. The difference in stock and JCW pulley as far as seat of the pants feel is minimal. Put a 15 or 17 % for a noticeable difference.

 

Thanks...that's kind of what I was wondering! I think I'm going to order one of the May 17% kits with the plugs, pulley, and belt. I need to install my boost gauge first so I can see what kind of results I get from the new pulley