Exam 18: Engine Upper End

If the timing chain or belt skips or breaks, pistons and valves collide, often resulting in major engine damage. This engine is MOST-Likely to be a(n):

____________________ seats are found in original equipment aluminum heads and in iron heads that have been repaired by a machine shop.

The number of cam ____________________ depends on the number of valves that need to be opened.

Older shaft-mounted rocker arms are usually made of cast iron.

All of the following statements are true EXCEPT:

A burned valve causes a misfire that is evident at idle but not at higher engine speeds.

What is an advantage of integral seats?

Compared to chain drives, what are the advantages of belt drives?

On cam-in-block (pushrod) engines, the part that rides on the cam lobe is called a(n) ____.

All of the following statements are true EXCEPT:

How would you test for a burned exhaust valve?

While having a discussion about value overlap, Technician A says that a cam grind that will benefit performance at high rpm will hurt performance at low rpm. Technician B says if it benefits performance at high rpm, it will aid performance at low rpm. Who is correct?

What is the difference between shaft-mounted rocker arms and stud-mounted rocker arms?

The ____ determines how well an engine breathes at a particular engine rpm.

What is coil bind?

The more air and fuel drawn into the cylinder in the correct proportion (not too rich or lean), the more power an engine can produce. This is called ____________________.

The term that is MOST-Likely to be used to describe the number of degrees of crankshaft rotation that occurs while both the intake and exhaust valves are open at the same time is:

Valve guide seals are LEAST-Likely to come in which of the following types?

Replaceable insert guides are only used in cast iron cylinder heads.

Which of the following is LEAST-Likely a loose part of a bare head?