To get to the clutch bearing, the 6 bolts with staked washers on the perimeter must be removed. This is pic of the 2nd R4 clutch disassembled. The 2nd R4 has 11 mm bolts, but the 1st R4 has 8 mm bolts. Why the difference?

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85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked