Originally Posted by Rog G
Originally Posted by LightSpeed
The big deal to find out is what caused that to happen.

It is likely that the retaining bolt was not properly torqued with Loctite, and allowed the cam pulley to fret away the keyway eventually failing.


Probably true, having had all that apart to replace the cams i knows what it takes and what could happen if shortcuts were taken.

2019 M3W Sold and is now in Las Vegas enjoying the showgirls :-)