[TR] TR torque method

[Chris Simo]

>
> There's many methods/opinions on how to check torque after heat cycling
> the engine.  Some head fasteners are one time torque and stretch the
> fastener during installation. Other's like our head hardware can be reused
> multiple times.
>
> For what it's worth,  I don't back off the nuts for the sole reason of
> fear of breaking the head gasket seal. It's a fear - not sure its
> validated.  I give a pull on each of the nuts with the torque wrench at the
> specified torque.  - Last engine rebuild, I got some movement on most of
> the nuts.  My 2 cents.
>
> Update - , my reused Payen head gasket on my TR4 is going on 4 years with
> no problems.  I did coat both sides with copper spray before installation -
> your results may vary. Speaking of which... I should order a spare
> headgasket :)
>
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