Apparently Alpina are recommending the VANOS washers on the B3S engine are replaced with special, hardened & heat-treated items (at £47 for the three), good news is that it appears to be possible to replace them without removing the VANOS so probably worth doing as preventative maintenance at some point
Alpina part no. for these is 11 36 225 (full BMW part # is 91 47 1 136 225)
See this thread for full details http://thealpinaregister.com/forums/viewtopic.php?t=20385
Alpina part no. for these is 11 36 225 (full BMW part # is 91 47 1 136 225)
See this thread for full details http://thealpinaregister.com/forums/viewtopic.php?t=20385