[yo2001]

Okay, early 280z crank pulley and late 280zx crank pulley are different. Which one is better? 280zx crank pulley looks like it has a weight of some sort.

 

[zedder280]

Nissan Motorsports sells a euro damper which is a single pulley . If you don't have a/c it is a light weight alternative. Cost 120.00$ Other than that the two pulley set up is lighter than the three ,hense better performance. I was told the 240 single pulley uses a different belt width. Brian