All of the following statements are true EXCEPT:
A)cams with mechanical valve lash adjustment have a clearance ramp at the beginning and end of each lobe.
B)a high performance camshaft will have high engine vacuum at idle.
C)advanced cam timing improves low and mid-range torque.
D)retarded cam timing improves high rpm power.

Question

Quizplus · Accepted Answer

A, C, and D are all true statements about camshafts, but B is false. A high performance camshaft will typically have lower engine vacuum at idle due to increased valve overlap.

All of the Following Statements Are True EXCEPT