Rolls-Royce 20/25 - crankshaft damper






Old and new.  The driven disk was corroded and had already been ground below limit.  The disk is held in place by 4 rivets; visible in the photograph.




The old disk resting on top of the overhauled and reground replacement.  The new disk is 0.088" thick compared with 0.061" of the old one.

pressure plates



Rear and centre elements of the damper, which have been reground with a minimum of material removed.