I was just on the Toyota Owners Club site and found this information from Martin_Longbow;
Toyota Carina E 2.0Ltr D Turbo 1996 - 98 (2C-T)
Head tightening sequence (new bolts not required)
Stage 1, 44 Nm
Stage 2, Tighten 90 Degrees
Stage 3, Tighten 90 Degrees
On the older ones there is a four stage sequence and there are 18 bolts according to the diagrame I have for the tightening sequence
I hope it's of some help.