Head tightening/torque/angles.

- A
- A.Lee
  
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posted
15 years ago

Sun, Jun 8, 2008 2:23 PM

I'm currently rebuilding my Skoda, and have just got round to refitting the head for a 2nd time. Anyway, in the Haynes manual, the torque routine is : 40nm, 90 degrees tighten, then a further 90 degrees. The head bolts packaging from the first re-fit says 40nm, 60nm,

90degrees then a further 90 degrees. The latest ones have 40nm, 90degrees release, 90 degree tighten, then a further 90 degree tighten.

Obviously all will finish with a differing torque figure, if it could be measured. Why the difference between the 3, and why not just plain torque figures to get all bolts equally tight?

Thanks Alan.

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- M
- Mrcheerful
  
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posted
15 years ago

Sun, Jun 8, 2008 3:10 PM

this type of bolt is specially designed for angle tightening, this is better than torque tightening at giving a designed amount of pressure on the head/gasket.

I would go with the directions that come with the new bolts, assuming they are the right ones for your model.

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