Re: 1928 Head gasket nut torque

Posted by Peter Packard On 2024/9/24 7:48:10

A word of caution regarding the head nut tightening torque for a 5th Series Six. I have a 533 Six and whilst Dave (Owen Dyneto) is correct that 60-62 ft lbs is appropriate for the 7/16 20 TPI threads, in my experience, I would suggest that unless your Torque Wrench is new or has been calibrated or checked in the past few years, or you have had new studs put into the engine, I would probably limit the torque to 55 ft lbs. If the studs are originals I have seen quite a number of corroded studs, particularly if the engine has been run without any corrosion protection for many years. It is a very bad feeling when a stud yields and you are looking for helicoils, etc. And as West Peterson advises the torque should be checked a number of times. Peter T .