Gentlemen;
Looking at the disc from the edge, the hub holding the coil springs is offset. Although one can see the coils from both sides, the 'offset'portion goes toward the transmission (inside clutch assembly) to operate.
If installed backward the hub will hit the flywheel, locking up the clutch. Sometimes it won't completly lock & the disc will gring on the flywheel bolts.
Most clutch sets are rebuilt and have a sticker on the disc saying "flywheel side". These usually are correct but can be on the wrong side.
This may have happend to you.
John M.........
