No, I'm talking about engine balance. Not having a damper affects engine balance. I wanted people to understand a little more about engine balance, hence the links I choose. You know, connect the dots. What honda owners and V8 owners say about undamped lightweight pulleys *DOESN'T* apply to us. We don't have a balanced engine - they do. They can get away with not using a damped pulley, we can't.
I have not had any personal experience with a lightweight undamped pulley, mostly, because they cost around $400, and the benefit is pretty marginal. IF I was trying to make a FE-DOHC spin to 9,000 rpm, then I would be using a FluidDampr pulley, you betch-yer-best-buttons I would.
There is a wonderful video, which I was unable to find in a timely fashion, which shows the difference a damper makes on crankshaft vibrations.
I want people to know, that if the put an undamped pulley on their engine, that there is a good chance it will significantly shorten the life of their engine, especially under high power situations.
So, go for the undamped pulley, and let me know how much you enjoy changing your main bearings.
Oh, and please post before and after 1/4 runs, so people realize how much difference it doesn't make to have a lightweight pulley.
More ... relevant links:
Welcome to ATI Performance Products.com
and
Team3S- Dodge Stealth Mitsubishi 3000GT Owners Pages
and
Pinkcore BBS: light weight pulley problem?
Mostly first hand reports from other (non-MX6) internally unbalanced engine owners who have used, or thought about and are warning others against an undamped lightweight pulley.