No that doesn't sound right. Here is the exact info from the ford technician...
Tighten all bolts in a single sequence
Note: Always install new cylinder head bolts. 50 Nm
Back the bolts off 1/2 turn.
Tighten the bolts in sequence shown to 50 Nm
Note: Rotate all the bolts in a single sequence an additional 180 degrees in two steps of 90 degrees each.
Hope that helps.
Anthony ....The one and only GTS Blue SVT
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