Barry, the block is -86 and the head is cast -87.What year is this Robert ? as i see the roundel BMW logo on the valve cover it isn't a B35... ?
and no thooted balancer.. just the pin for the CPS … as in older engines.
It's not a B35, it's the high compression 10:1 B34. Downside is a less flowing head, and 1mm smaller intake valves compared to the B35, but I might fix that if I can find someone who knows their way around an M30 head in Europe.