still gettin my posts out here... so i read a lot about cooper owners replacing the pulley? what does that do exactly? does it save gas or increase speed?


I was looking to do a few more mods and make it a little quicker and was wonder if this pulley would do that...

thanks for your help..

mikemc

 

Most likely, they are referring to replacing the stock supercharger pulley with a reduced diameter pulley, like this one. The newer, smaller pulley increases the speed of the supercharger and increases the HP. Unfortunately, the R56 went from a supercharged to a turbocharged engine in 2007, so this is not an available upgrade path. Hope this helps.

Cheers!!

 

+1, only works on 02-06 MCS or 07,08 MCS Verts. No go on the 07+ turbo models.

 

On ours the equivalant mod might be a tune?...which is a lot more $$$

 

I have a lite weight pulley installed on a 2009 jcw

 

How? What? Where? When? as there is no PULLEY to replace I do not see how you have this done. Unless of course you changed the engine to a supercharged one, or you are talking about something completely different to what the OP is asking about.

 

he has a lightweight crank pulley

 

Yes this is very helpful! thank you!

are you reffering to the JCW tune kit from mini? because i was fortunite to have got that already...any other suggestions to increase speed?

 

Downpipe,meth injection and 25hp shot of nitrous

 

You can get ALTA's or CravenSpeed's lightened crank pulley. Supposedly supposed to add a few HP.

 

Our crank pulleys are three pounds lighter than the stock. The reduction in weight is effectively the same power increase as removing 75 pounds of weight from your vehicle. You will feel increased throttle response and acceleration!