Clutch "knocking"?
You mentioned it's a diaphragm multi finger clutch pressure plate and not a 3 finger Borg and Beck style. Check under the dash, specifically for the really really large clutch assist spring. If it's there, remove it. Not needed with a diaphragm style clutch, possibly adjust the linkage under the car as well. Should solve your problem.
If you dont want to destroy the spring and its retainer, easiest way is to remove the complete pedal assembly from that car, push the clutch pedal down. "Watch your fingers", you can actually push the pedal past it's normal floorpan stop point with it out of the car, and simply unhook the spring and its retainer and remove them.
Other people cut em off with a die grinder, or stack washers between the coils to spread the spring to unhook it. Have fun its like a giant mouse trap. Pix are of the pedal set I restored for my 67.
You mentioned it's a diaphragm multi finger clutch pressure plate and not a 3 finger Borg and Beck style. Check under the dash, specifically for the really really large clutch assist spring. If it's there, remove it. Not needed with a diaphragm style clutch, possibly adjust the linkage under the car as well. Should solve your problem.
If you dont want to destroy the spring and its retainer, easiest way is to remove the complete pedal assembly from that car, push the clutch pedal down. "Watch your fingers", you can actually push the pedal past it's normal floorpan stop point with it out of the car, and simply unhook the spring and its retainer and remove them.
Other people cut em off with a die grinder, or stack washers between the coils to spread the spring to unhook it. Have fun its like a giant mouse trap. Pix are of the pedal set I restored for my 67.
