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View Full Version : uprated head bolts



jonnyshaw49
18-12-2010, 16:21
hi just realised when i rebuilt my engine i used the uprated 12.9 head bolts but only tightened them up to the original torque settings, will this be ok? or are you meant to tighten them more?? i thought they were uprated meaning they were stronger not because you can tighten them up more to make a better seal. would you reccomend tightening them some more or leaving them as the book says?