Clutch "knocking"?

moparmat2000 said
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.

View attachment 1715714973

Daves69 said
FWIW, The HD pedal has an outer bracket to deal with.........
View attachment 1715715035

Thanks guys. I did confirm the spring had been removed from the pedal assembly a while back when I was having another issue with some play in the pedal assembly right after I got the car. It was missing the circlip that holds the pivot assembly together, so the pedal was moving side-to-side a bit.

I did find one thing this morning that might have been part of my problem anyway. The nut that holds the clutch linkage to the body right above the frame rail was missing, so I put one on and got that all mounted nice and tight. Not sure if it was also causing "the knock" just yet, but I know it was the source of a really annoying body squeak when it was going down the road.

I did notice after getting the linkage mounted solidly that the other end seemed to be slightly off center, or not in a perfect straight line if that makes sense (see circled area of the pic). Not sure if that is anything I should try to correct because it looks like there is supposed to be play in that joint and the linkage seems to work fine. Any thoughts on that?