15-11-2020, 03:50 PM
We use Norbar wrenches at work we have screwdriver torque wrenchs all the way up to ones it take more weight than I have got to use.
We have a calibration unit for 1/2" bars. My 25 year old Norbar was only a bit out when we tested it.
I would never buy a second hand torque wrench as you never know if it has been left wound up for years.
A good mechanic will be able to feel if things are tight enough using the correct sized spanner and get the torque fairly even.
As far as head gaskets go I have used high temperature copper grease for years with no issues, both on iron and alloy heads.
I use blue loctite on the studs to seal them into place.
There are different torque settings for lubricated and un lubricated fasteners as well as different grades and materials.
We have a calibration unit for 1/2" bars. My 25 year old Norbar was only a bit out when we tested it.
I would never buy a second hand torque wrench as you never know if it has been left wound up for years.
A good mechanic will be able to feel if things are tight enough using the correct sized spanner and get the torque fairly even.
As far as head gaskets go I have used high temperature copper grease for years with no issues, both on iron and alloy heads.
I use blue loctite on the studs to seal them into place.
There are different torque settings for lubricated and un lubricated fasteners as well as different grades and materials.