Sup Mod keeping the peace
Joined: Dec 2004
Location: NJ (Philadelphia area)
I might also add:
T-T-Y bolts are tightened in a series of stages and in sequence. T-T-Y bolts are generally tightened in sequence to what is known as a snug torque value. This snug value is to ensure that the component, in this case say a cylinder head is firmly located on the block. Torque is further applied in sequence through a series of motions only this time instead of torque load being measured, angle of rotation is measured by using an angle wrench.
Follow the tightening specs as outlined in the FSM. Always clean the threads where the bolts pass through, any thread damage, corrosion or rust will create excessive friction giving you a false torque reading, robbing you of valuable clamping force. Using engine oil, lightly oil the threads and under the heads/washers on the T-T-Y bolts as specified by the FSM. Clean, oiled threads prevent binding, allowing for accurate and consistent torquing. Be careful not to over-oil the bolts, especially if they are threading into a blind hole. Too much oil will hydro-lock the bolt and give false torque readings.
KA-T for life, yo!