Sump Studs v Bolts

[Charles P]

Yes - to be clear, the original pressed tin  sump would not need removing to enable the engine to come out. The deep ali type that you can find nowadays that has a very clear 'square' front, do need removal. The deep ali type with the 'sloping' front might not need removal (mine, on the Cabriolet and the Box do not require it, for instance) Though Charles' problem suggests it might be an issue for some cars. But one that can be overcome...

Hugh

For the avoidance of doubt my engine comes out OK with the "semi-deep" (sloping front) sump attached.

The challenge I had at Wiscombe was removing the sump with the engine in-situ. 
The idiot mechanic had allowed a magneto HT cable nut roll down the scuttle and straight into the oil filler, and thus the sump. On a mag engine this bypasses the wire mesh and is therefore an immediate hazard.
The idiot mechanic had a strong word with himself about that one.