Two questions - Have got my M's engine tore down. It appears that there were no valve stem oil seals used on these engines. Has anyone put seals on these heads after a valve job? Would there be any issues with using seals on these heads now?
Second, the little hairpin clips on the valve stems, "valve stem retainer" they are called in the parts diagram. What purpose do they serve? There were a couple missing upon disassembly, and I can't see where they really do anything, unless they just hold the valves in place during reassembling the head.
Second, the little hairpin clips on the valve stems, "valve stem retainer" they are called in the parts diagram. What purpose do they serve? There were a couple missing upon disassembly, and I can't see where they really do anything, unless they just hold the valves in place during reassembling the head.
