Thoughts on carbon clean?

[C-B]

Who offered £650? I’ve been quoted best part of a grand by ADS

[TheBigFish]

Hi gents,

I bought an inlet manifold walnut blaster adaptor for the B8 on ebay - 12 quid. Thinking of giving this a 'blast' myself
2 questions -

1) How long does it take to remove the inlet manifold approximately?
2) How do you turn the engine by hand to close up the other half of the ports you wish to blast? Do you need a special tool? Can turning of the engine be done easily?

Cheers