Now this is funny. My buddy is building a 163 mm pulley for me from a stock new piece because I would like to keep my 65 SC pulley as well. BTW the stock pulley is not a "special" AMG part. It is a mass production part, build to fit many Mercedes V6 engines and could be purchased as an aftermarket part for about $60.

We are still not sure if we keep the vibration damper on the pulley or not. The crankshaft pulley is a wear part and balancing a construction with a plastic vibration damper between 2 steel rings is kind of tricky and makes no sense to me.The pulley runs out of balancing tolerances sooner or later when the damper worns out.

So i wouldn`t be focused too much on balancing the 178mm ebay pulley as well.

In my opinion it would be the best to build a kind of a solid "2 - piece" crankshaft pulley with a hub and a set of different sized pulley wheels - of course.

Something like this (seen on eaton superchargers).

http://i.ebayimg.com/images/i/380114...-1/s-l1000.jpg

Steven

Berlin Germany