Supposedly it’s a big no-no to run an undampened pulley because of the premature wear that it can cause on the main bearings. However, from what I recall, some earlier D16A6’s didn’t come with a dampened crank pulley so I’m not sure how much truth there is to this. I know Bone said he trashed some bearings after 5-600 miles and I certainly believe that.
I’m just wondering if it has to do with how much load there is on the crank pulley? In other words, do accessories like AC and PS increase the amount of wear on the main bearings? Is it ok to use an undampened pulley if you’re only running the alternator?
The JRSC crank pulleys for the Y7 and Y8 were undampened...