yes its in 12 stages.
tighten the head bolts down to 20nm 15lbf ft in the order that they are tightened in then tighten them all down at 97deg+2deg then wait 3minutes to let the head gasket to settle slacken bolts 1 and 2 then tighten bolts 1 and 2 to 20 nm then 97deg+2deg then slacken bolts 3.4.5.6 then tighten to 20 nm then 97deg+2deg then slacken 7.8.9.10 then tighten to 20nm then 110deg+6deg
ian, May 2009
