HUUUGE update.
Everything is bolted up, torqued down. Thats it, it's all done!
Nitty gritty details of the engine are as follows;
Piston to bore clearence is 2 thou
6 thou deck height with a 35 thou thick (0.9mm) gives a squish of 29 thou (Bobby. A bit tighter than what you said but its close enough)
Comp ratio is smack on 9.0:1
CC of the head is 66 CC
Piston CC is - 12.2 CC
Top ring gap is: 16 thou
Second ring gap is: 18 thou
Mains clearance is: 2.1 thou
Big ends is: 1.88 thou
That little prick the bolt fairy has moved some bolts and nuts!!! . Sump to bolt nuts and bolts, oil pump, water pump bolts are MIA! Ordered them all from Nissan on Wednesday and luckily most are in the country. Pick up on Monday morning.