Postby Cobber » 13 Dec 2020 05:16
It's more important that the torque settings are the same across the head than any particular torque setting, unless you have a properly calibrated torque wrench (and have it's calibration checked regularly) it wont matter much if it's 50 ft/lb or 55 ft/lb as your wrench is probably inaccurate anyway.
Use the torque values as a guide, start at a lower value..... say @ 30 ft/lb, follow the tightening sequence..
Then go around again checking they are all 30 ft/lb.
Now readjust the torque wrench to @ 40 ft/lb and do as above.
Finally go though it all again @ the value you choose 50 or 55 ft/lb.
It wont matter if your torque wrench is a bit out of calibration as all the bolts will be torqued the same.
Another point about the use of torque wrenches is the use of an extension will throw out the torque setting as it will act as a torsion spring.......this wont matter if the same extension is used on all the head bolts as the tension will be the same value applied across the head. Never use the extension on some of the head bolts and not on the others or change extensions for some......this will result in uneven torque across the head!
"Keep calm, relax, take a deep breath, focus on the problem & PULL THE BLOODY TRIGGER"
'80 Triumph TR7.
'97 Ford Falcon Longreach 'S' ute,
'98 MG-F.
'83 Jaguar XJ6 Sovereign S3.
).
