Well, it seems like you hit a ''nerve'' with most of the responders to this thread, not just me.
And i feel that we struck a ''nerve'' with you judging by your harsh responses.
Portraying yourself as a know it all for clutch design and what materials and technology works, and for that matter, what doesn't work on ALL applications makes you a self professed expert on the subject.
Naturally, many would draw the inference that if you have the vast experience that you are portraying on here with your posts, running 9 second stick cars in the past and all, that you would be up to snuff with the higher end racers who run Pro Stock etc. who demand the latest in technology mixed with the experience of a ''been there done that and it didn't work, but i do know what does for every application'' person like you.
FWIW, i still stick by the fact that my engine does not vibrate at over 6,000 rpm with my new Centerforce clutch, so i am certain that the balance to the engine wasn't changed much at all in my application, if any.
Also, what brand and weight of synthetic oil do you run in your transmission?
I ran Amsoil 75/90 in mine and couldn't get it to work without clashing. I even checked that the clutch was fully disengaging, so that wasn't the issue. A flush and change back to 75/90 GL4 solved the issue completely.
This is sad, because i believe in the great benefits of using synthetic oils.
My apologies for the O.P., it seems we got side tracked on what was a reasonably simple question.
