Hydraulic lock can only occur when water (or other liquid) enters the cylinder through an open inlet valve. The moment the piston commences the compression stroke the inlet and exhaust valves will be closed resulting in a bent con rod or rods...

Haha if only mate. Haven’t even got the engine out. It’s coming out this weekend… it’s completely seized so I’ll be interested to see what’s what.

That’s helpful mate. Don’t worry the doom is well realised. The engine is completely seized. It’s coming out this weekend and I’ll probably rebuild it completely. Might leave the cam shaft alone as I’m not set up to reem new bearings.

As above it needs a little bit of play before the pedel engages the hydraulics, otherwise the clutch is always slightly disengaged and can slip, especially when warm

Take the little cover off and, with a helper, there should be a little movement of the pedal before the pushrod moves, that's it basically.