Idler pulleys

[fas4d]

I need idler pulleys for my car. It has a 2.3 Whipple w/ a 3" pulley and a Metco 4# lower. I would also like to be able to lower the boost to around 15#'s for the street. So I need to find a pulley combo that will lower the boost and fit w/ the Idler pulleys.
Thanks,
Josh

 

[Screamin Cobra]

Buy 3x100mm and 1x90mm...if you want a 15# pulley combo then purchase a 3.25'' upper pulley with the stock lower and if you are not running the stock lower which I do not believe that you are, then buy a 3.5'' upper (or use the stock whipple pulley) with a 2# lower for 15lbs of boost. :thumbsup:

<edit> I suppose that it would be the same for a Mach.

 

[fas4d]

I have a 3.5" upper for the Whipple , I just didn't know if it would fit w/ the idlers.

 

[Screamin Cobra]

I have a 3.5" upper for the Whipple , I just didn't know if it would fit w/ the idlers.

Oh alright, when I was running my whipple, I used the 3x100mm - 1x90mm idlers with it just fine with my 3.5'' upper pulley. In fact, I am running the same now with the KB.