maybe someone has asked a question similar to this, but I have looked through the forums and have not been able to find what I am looking for. I've got an 86 Indy trail with a 108-c clutch and want to mod the clutch, but before doing so, I want to know how it works and what will affect the performance before making any changes. For example what will changing the weights do. what does the helix do. how do you know what your angle is on the helix, can you change a button secondary into a roller? Any help would be greatly appreciated SWRules

best advice is buy oliv aaen's book on clutch tuning. grasp that and u are in the business.