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Discussion Starter #1
For a mini r56 1.4 cylinder head it says
30 jointing torque which can be done on torque wrench.

Then angle of rotation 90 then 180.
Can I do this in the sense of like using a protractor ?
Just turn it 90 degrees. Then turn it another 180 degrees more ???

Have I got that right ??
 

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More or less, yes. Torque them down to 30 in the correct sequence, then turn a further 90 degrees in sequence, then another 180 degrees in sequence馃憤馃徎
 

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Discussion Starter #6
I know but why does that mean you can't use a torque wrench to a particular figure?

Does it not work?
 

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you can

30

then it's referred to as torque to yield which is the angular value

if you want to use normal bolts you can buy them from ARP but close to 拢500, those you can also reuse which on one of these is always on the horizon 馃槀
 

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Discussion Starter #8
Yes but, why can't they just give a single figure like torque them to ....50 nm or what ever.
Why have a torque then another angle figure?
Is torque not precise or something??
See what I mean ?
 

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Torque when applied to a bolt is dependant upon friction resisting it, but angular motion then stretches the bolt by a proportion of the thread, so then applies a far more accurate amount of tension to the fixing.
 
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