Originally Posted by
waldig
What is the size of that idler next to the supercharger pulley? The wrap does look good. Woody
The flanged-smooth idler (next to the SC pulley) has an OD (at the belt surface) of 65mm. It is a double bearing idler and has a hard-black anodize on the belt contact area.
I had this pulley made so that it could mounted as shown above OR, it can be mounted with the factory (black) bracket if so desired.
The idler below it is 76mm and is also hard anodized on the belt mating surface.
Anthony (grip grip) has it shown installed with a 65 mm SC pulley, but it also works with the 62 mm SC pulley using the same belt.
The underdrive Alternator pulley is also hard coated on the belt mating surface. It is lighter than the factory pulley and is 15% larger so it will slightly reduce the load (from spinning up the Alternator) and it will increase the belt contact area (and thereby reduce slip sometimes indicated by belt dust near the alt). It should be available within the week.
Chris