Yes it really is about half a centimetre!
So spent yesterday doing this
No immediate/obvious damage seen (no real oil leak or metal shavings)
Was thinking maybe the crankshaft needle bearing behind the flywheel gland nut was knackered (explaining the massive end float?). The dowel pins look tight fitting to me, but I have not managed to get the flywheel nut off yet, Fecking hell that torque is insane?
Am I speaking rubbish or could this (or end float shims) be the source of the excessive play? Anything else I should investigate whilst the engine is out? Any tips on getting that nut off? who framed roger rabbit? who shot Mr Burns...