Deck 10: Cylinder Block: Inspection and Service

Question 1

Technician A says installing straight seam cam bearings is best accomplished using an expanding mandrel. Technician B says lubricating the outside of the bearing with 90- or 140-weight oil makes installation much easier. Who is right?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Answer 1

B

Question 2

What are the two principal types of glaze breakers?

Answer 2

There are the two principal types of glaze breakers:
spring-loaded glaze breaker
ball-type glaze breaker, or Flex-Hone^®

Question 3

What are the three types of oil gallery plugs?

Answer 3

There are three types of oil gallery plugs:
female thread
male thread
pressed-fit cup

Question 4

Technician A says lifter bores can be cleaned with a brake Flex-Hone. Technician B says a lifter that is too loose in its bore will cause oil pressure problems. Who is correct?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 5

Of the measuring devices listed below, which is the most accurate in measuring cylinder bore size?

A)micrometer
B)telescoping gauge
C)inside micrometer
D)cylinder dial bore gauge

Question 6

After glaze breaking or cylinder honing, clean the block with _____.

A)stoddard solvent
B)Prussian blue
C)acid bath
D)hot soapy water

Question 7

Threaded oil gallery plugs should be coated with RTV silicone before tightening into the block.

Question 8

When re-ringing a block, what is the maximum amount of upper cylinder taper wear allowed by most aftermarket piston ring experts?

Question 9

To check for main bearing bore alignment, Clevite suggests using _____.

A)antiseize compound
B)Prussian blue
C)antimony yellow
D)518 red

Question 10

When plateau honing a cylinder, a _____-grit stone and a _____-grit stone should be used.

Question 11

Copper cam bearings must be removed before hot tanking a block.

Question 12

What is the purpose of the crosshatch?

Question 13

An iron block can distort if allowed to hang from one end on an engine stand.

Question 14

Most oval wear on a cylinder is away from the major thrust side.

Question 15

All of the following are used for chamfering a cylinder EXCEPT a _____.

A)ridge reamer
B)diamond hone
C)chamfering cone
D)boring bar cutter

Question 16

Technician A says aligning dowels on the back of the block are often hollow. Technician B says off-center aligning dowels can be a source of engine vibration. Who is correct?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 17

An ultrasonic thickness gauge is used to check cylinder wall thickness.

Question 18

Technician A says when glaze breaking a cylinder, you must go from the very top to the very bottom of the cylinder to achieve desired results. Technician B says a drill motor with a speed of 450 rpm works well for deglazing a cylinder. Who is correct?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 19

The life expectancy of today's internal engine parts is currently listed at _____ miles.

A)100,000
B)150,000
C)200,000
D)250,000

Question 20

Technician A says cylinder taper wear causes changes the end gaps of the piston rings to change. Technician B says if there is too much taper wear, out-of-round wear occurs. Who is right?

A)Technician A
B)Technician B
C)Both technicians
D)Neither technician

Question 21

When a very fine grit hone set is used after initial honing of a cylinder, this is called _____ honing.

Question 22

What can be put on the outside diameter (O.D.) of the bearing to make cam bearing installation easier?

Question 23

What can happen to cylinders if they are rebored while the block is mounted on a conventional engine stand?

Question 24

What is the name for the 20° to 60° crisscross pattern left during cylinder wall honing?

Question 25

What is the maximum amount of bore taper allowed in cylinders using conventional cast iron rings?

Question 26

After hot-tanking and rinsing a block, what should be done to all machined surfaces?

Question 27

To check cylinder taper using a piston ring and feeler gauge, you measure the ring gap at the top and bottom of the cylinder. Then what do you do?

Question 28

With how much interference is a cylinder sleeve installed?

Question 29

Where would NPT threads be found on a cylinder block?

Question 30

Besides taper, what is another type of cylinder bore wear?

Question 31

Technician A says that the amount of taper a cylinder bore has can be determined using a piston ring and a feeler gauge. Technician B says that the greatest cylinder bore out-of-round wear will occur at the wrist pin ends of the piston. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 32

A block from an early 1970s car has 0.012" of bore taper. Technician A says to rebore oversize and use a new piston and rings. Technician B says to use 0.010" oversized rings. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 33

Technician A says that a main bearing that has burned will often cause the main bearing bore diameter to become smaller in some places. Technician B says that main caps should be torqued in place before reboring the block. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 34

When a cylinder is bored and honed 0.030" oversize, how much metal is removed from the surface of the cylinder wall?

Question 35

How far into the block are cup-type core plugs installed?

Question 36

Technician A says that some manufacturers recommend against breaking the cylinder glaze with a glaze breaker when re-ringing an engine that has not been removed from the car. Technician B says that a Flex-Hone is used to help break the cylinder glaze so new rings can seat more easily. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 37

What kind of socket can be used to remove a male gallery plug?

Question 38

When using the universal cam bearing installer, give the tool one hard rap to start the bearing into the bore. What should be done to the expanding mandrel before continuing?

Question 39

What is the name of the shiny area where the rings rub against the cylinder wall?

Question 40

Technician A says that a cracked cylinder bore cannot be repaired. Technician B says that when finish-honing after boring, stroking the hone out of the top of the cylinder bore will produce a taper that is hard to correct. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 41

Technician A says that a pressed-fit cylinder sleeve usually has an I.D. that is smaller than the original bore size. Technician B says to clean the block thoroughly with solvent after honing. Who is right

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 42

Technician A says that oil gallery plugs and heater-hose connections usually have NPT threads. Technician B says that a 3/8" to 1/4" socket adapter is used to remove oil gallery plugs. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 43

Technician A says that removing 0.015" of material from the cylinder wall will result in a bore that is 0.030" larger. Technician B says that a 0.030" oversized cylinder has a wall thickness that is 0.015" thinner than stock. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B

Question 44

Technician A says that if the camshaft is too tight after new cam bearings are installed, the bearing can be sanded with emery cloth. Technician B says that the front cam bearing is always installed flush with the front of the block. Who is right?

A)Technician A only
B)Technician B only
C)Both A and B
D)Neither A nor B