Valve spring inserts (shims) are designed to ______________. a. Increase installed height of the valve b. Decrease installed height of the valve c. Adjust the correct valve spring installed height d....

Valve spring inserts (shims) are designed to ______________.

a. Increase installed height of the valve b. Decrease installed height of the valve c. Adjust the correct valve spring installed height d. Decrease valve spring pressure to compensate for decreased installed height