Lair

Head milled and gasket replaced - do I require new head bolts (as S2K bolts don't stretch apparently). Can I re-use the head bolts I should I spend over £100 on a new set?
Thank you

Hfreak

Head milled?

Search the forum for info on this, not advised. Good luck with the build.

Charper732

If you replace a headgasket and don't mill the head, you are retarded. You mill it just enough to get it completely flat.

And yes, head studs can be reused. if you are already in there and don't already have them, get ARP studs and you wont have an issue with blowing the HG again.

Jaspah

Simply check the workshop manual. It says the headbolts can be re used, and to check the head if it's flat. If not, make it flat.

How much did you take off to get it straight?

Hfreak

According to the manual the max one can remove is 0.008", the minimum height of the head has to be 4.132"

Resurfacing also changes - retards - the valve timing.
The top chain sprocket pitch circle diameter is (~) 95mm, it has 50 teeth.
pi * 95 ~ 298.45mm (= 360º)
0.008" = 0.20mm => 0.24º
0.030" = 0.76mm => 0.92º