Hi Zoe, First you must use NEW bolts then tighten in the following:
1) 30Nm then
2) plus 80+/-4 degrees then
3) wait 3 minutes then
4) slaken off bolts 1&2 then retorque to 25Nm then plus 213+/-7deg
5) repeat step(4) for bolts 3&4, 5&6, 7&8, 9&10.
the sequence for tighning is
8, 4, 1, 5, 9,
7, 3, 2, 6, 10,
front of engine
nigel, June 2008