On many late-model engines, valve seats located in the block rather than in the cylinder head is true?

On many late-model engines, valve seats located in the block rather than in the cylinder head is true?

• A. True
• B. False
• C. Not applicable
• D. Not sure

Answer: (A)

Valve seats can be located in the block rather than in the cylinder head, a design used in several late-model engines. This arrangement is often chosen to keep the seating surface cooler and more durable by placing it in the block, which can be aluminum-friendly in some engine families or paired with insert seats. It also can simplify replacement or re-machining of seats in engines designed around block-mounted seats. In service, you would address the seats in the block (or their inserts) rather than in the head, which is why this statement can be true for many late-model engines.

Valve seats can be located in the block rather than in the cylinder head, a design used in several late-model engines. This arrangement is often chosen to keep the seating surface cooler and more durable by placing it in the block, which can be aluminum-friendly in some engine families or paired with insert seats. It also can simplify replacement or re-machining of seats in engines designed around block-mounted seats. In service, you would address the seats in the block (or their inserts) rather than in the head, which is why this statement can be true for many late-model engines.