Reply to "throw out and Clutch Pedal linkage"

To sort-of answer the question on how much force to disengage: some clutch mfgrs or refurbishers will tell you their 11" pressure plate is an 1800 psi (stock), a 2200 psi (noticably stronger at the pedal for street use) or 2600-up (racing). They don't normally publish this info. Many years ago, I put a pressure gauge in the clutch line out of curiosity and got around 300 psi at full disengagement for my unique system.