Which statement describes improper torque of the cylinder head?

• A. Reusing a permanently compressed gasket
• B. Improper Installation
• C. Installing a damaged gasket
• D. Improper torque of the cylinder head: either too tight or improper torque sequence

Answer: (D)

Torque control of the cylinder head centers on applying the correct torque value in the proper sequence to clamp the head evenly and seal the gasket. When torque is improper, the head may be over-tightened, which risks warping the head or stripping threads, or under-tightened/incorrectly sequenced, which prevents even clamping and seals from forming.

The statement that describes improper torque is the one that specifies the head being torqued either too tight or with an improper torque sequence. This directly points to the timing and amount of clamping pressure, which is what keeps the gasket sealed and the head flat against the surface.

Gasket condition and installation issues are important, but they relate to the state of the gasket or how it was installed rather than how the torque was applied. Understanding the proper torque value and the correct sequence helps prevent leaks and distortion by ensuring uniform clamping across the entire head.