I’m currently rebuilding a BX 16v engine (D6C) for normal road use.
It’s a known issue with these engines that they can suffer from oil starvation on long bends, often resulting in con rod failure.
I’m updating the oil pump with a 6 bar (XU10) spring and a bigger 26T crank sprocket, the sump will be baffled just to make the engine future proof.
All the parts together cost less than £100.

Hi Bjorn. No changes to the oil sump on this one. They’re generally not needed, unless the engine is used on track. At that point the engine would need a lot more work.
An XUJ94 can cope quite happily with spirited driving if the engine is well maintained, and the galleries kept clear. Ultimately this is project is to put the car back on the road, and not a race/track project.

That said, I did look for a baffled sump and windage tray but couldn’t find either within the restoration budget. Might have made a nice selling point.

M