heads bolts are:
stage 1: 10 Nm or 7lbft
stage 2: 30-50 Nm or 22 to 37 lbft
stage 3: (after 10-20 min wait) 82-92 Nm or 61 to 68 lbft
stage 4: 110 117 Nm or 81 to 86 lbft
stage 5: (after running engine for 15mins at 1k) 110 to 117 Nm or 81 to 86 lbft