CH 13 Review

CH 13 Review

Multiple Choice

A head with all its parts removed is called a(n) ____ cylinder head.

• empty

• bare

• stripped

• basic

Multiple Choice

In a cam-in-block engine, the part of the valve train riding directly on the cam is the ____.

• rocker arm

• valve lifter

• push rod

• plunger

Multiple Choice

On passenger car engines what angle do you usually see with the valve seat?

• 25 degrees

• 1.5 degrees

• 45 degrees

• 60 degrees

Valve construction

Spring tension Stiffness of valve spring measured in psi or kPa

Spring free length Length of valve spring when removed from engine

Spring open length

Length of spring when installed with valve fully open

Spring closed length Length of spring when installed with valve closed

Valve construction Continued

Valve float Occurs when valve fails to close because spring is too weak

Valve spring shim Thin, machined washer used to increase spring tension

Valve retainers and keepers Lock valve spring onto valve

Multiple Choice

The length of a valve spring when removed from the engine is called the ____ length.

• free

• open

• closed

• unstressed

Multiple Choice

An umbrella valve seal is shaped like a cup and keeps oil from being drawn into the cylinder head port and combustion chamber.

• true

• false

Multiple Choice

A valve guide that is part of the cylinder head casting is called an integral valve guide

• True

• False

Multiple Choice

The crankshaft is considered part of the top end of an engine

• true

• false

Multiple Choice

Pressed in valve seat is part of cylinder head and cannot be removed

• true

• false