Tag Archives: Torque Torque To Yield

Why you CANNOT re-use many modern Head Bolts

Recently I replaced the head gasket on a 1999 Mitsubishi Mirage with the 1.5L SOHC.  While torquing down the head bolts according the the tighten, loosen, tighten, turn another 180 degree procedure two of the bolts got very loose while turning the additional 180 degrees.  I was a little dumb struck and couldn’t explain it.  […]