washers on head bolts? and torque setting

[gttjames]

Im puting my head back on this week, 2 engines i stripped down recently - 1 had washers on every head bolt, 1 had washers on every head bolt but the 2 at either end which also clamp down the rocker rail - which is correct?

Using high tensile bolts, what are people torquing them up to these days?

cheers

[James5]

You dont need the washers on the rocker pedestal ends just were the bolts meet the head so you need 6 thick washers not those thin crappy things

[GTphil]

80Nm is good for the 12.9's I do mine to 85, depends how accurate your wrench is;)

As mentioned with the washers make sure they are the thick cast type washers, otherwise as happened in my case the washers mushroomed and the head began to lift under boost:eek:

[gttjames]

cheers guys, 80nm's it is :niceone: