Lightweight Flywheel Chatter

[pecivil]

I have the aasco fly and it has chattered fron day1. I also had clutch done, with new everything when it went in. My porsche mech who did it told me it would chatter before he did it. What exactly makes the noise he was not sure about. He said it is much better in boxsters than in 996's. In a 996 the transmission is between you and the engine, and in the box, the engine is between you and the tranny, this was his reason. My chatter is only noticable stopped at idle, you can hear it, but it isnt what I would call loud. But any "car guy" standing next to the car would immediately know something is up.

I did get a chance to hear a 996 with one in his shop, and it is MUCH louder inside the car than in the box.

I also know that in BMWs with lt wt flys there is chatter. I think it is just inherent to lt wt flys bolted onto cars designed for dual mass flys.