Land Rover Repair: torque specs for installing head bolts, cylinder head bolts, torque specs

Question
Hello,
 What are the torque specs for installing head bolts on a 1999 discovery II?Also is  it normal for discovery's temp gauge to run about half way between hot and cold?Or was that a warning sign before problems start?

Answer
If TD5 engine:
Cylinder head bolts initial tighten 30 Nm (22 lbf.ft),
Cylinder head bolts final tighten 65 Nm (48 lbf.ft), then a further 90 degrees , then a further 180 degrees and finally a further 45 degrees.

If V8 engine:
Cylinder head bolts tighten 20Nm, then 90 degrees, then a further 90 degrees

I dont understand the question, but Its absolutely normal if the gauge stands at half way.