Deck 34: Engine Blocks

Question 1

The block deck is the ________.

A)Valley surface of a V-type engine
B)Engine mounts are attached to the block
C)Bottom (pan rail) of the block
D)Top surface of the block

Answer 1

Top surface of the block

Question 2

The surface finish for the cylinder walls usually depends on ________.

A)The type of piston rings to be used
B)The type of engine oil that is going to be used in the engine
C)The cylinder wall-to-piston clearance
D)Both B and C

Answer 2

The type of piston rings to be used

Question 3

What should be installed and torqued to factory specifications before machining a block?

A)Front timing chain cover
B)Oil pan
C)Main bearing caps
D)All of the above

Answer 3

Main bearing caps

Question 4

Cast iron has about how much carbon content?

A)Less than 1%
B)3%
C)2%
D)4% or higher

Question 5

Engine blocks can be manufactured using which of these methods?

A)Extruded cylinder
B)Sand cast
C)Machined from a solid piece of metal (either cast iron or aluminum)
D)Sand cast or die-cast

Question 6

A bedplate is located between the ________ and the ________.

A)Block deck; cylinder bore
B)Bottom of the block; oil pan
C)Cylinder bores ; water jacket
D)Cylinder head ; block deck

Question 7

Siamese cylinder bores are ________.

A)Cylinders that do not have a coolant passage between them
B)Cast iron cylinders
C)Aluminum cylinders
D)Another name for cylinder liners

Question 8

Ultrasonic testing is used to test ________.

A)For crack in the block
B)Cylinder wall thickness
C)Surface finish of the cylinder bores
D)Both B and C

Question 9

An engine block should be machined in which order?

A)Block decking, align honing, cylinder boring
B)Align honing, block decking, cylinder boring
C)Align honing, cylinder boring, block deck machining
D)Cylinder boring, align honing, block decking

Question 10

After the engine block has been machined, it should be cleaned using ________.

A)Soap and water
B)SAE 10W-30 oil and a shop cloth
C)Sprayed with WD-40
D)Sprayed with brake cleaner to remove the cutting oil

Question 11

Technician A says that engine blocks are either cast iron or aluminum. Technician B says that cores are used inside a mold to form water jackets and cylinder bores. Who is right?

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

Question 12

Technician A says that the block deck is the surface to which the cylinder head attaches and can be slightly concave-shaped. Technician B says that core plugs are used to fill the holes in the block used for casting. Who is right?

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

Question 13

Technician A says that the cylinders should be bored and/or honed to match the size of the pistons to be used. Technician B says that bolt holes should be chamfered and cleaned with a thread chaser before assembly. Who is right?

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

Question 14

The cylinder holes are called ________.

A)Barrels
B)Rounders
C)Bores
D)Stroke

Question 15

Core plugs are also called ________.

A)Frost plugs
B)Freeze plugs
C)Weep plugs
D)A or B

Question 16

Cast-iron cylinder sleeves are either cast into the aluminum block during manufacturing or pressed into the aluminum block. These sleeves are not in contact with the coolant passages and are called ________.

A)Aluminum sleeves
B)Wet cylinder sleeves
C)Dry cylinder sleeves
D)Siamese cylinders

Question 17

The coolant passages around the cylinders are often called ________.

A)Cooling pockets
B)Cooling jackets
C)Water passages
D)Water holes

Question 18

Which of the following methods is most accurate for checking engine block identification?

A)Vehicle make and model
B)Vehicle model and year
C)Owners manual
D)Number on engine block

Question 19

When measuring a cylinder for wear, the most wear will be found at the ________.

A)Bottom of cylinder
B)Top of cylinder
C)Middle of the cylinder
D)5 inches from the top

Question 20

After honing or deglazing, cylinder walls should be washed with ________.

A)Oil soaked rags
B)Hot soapy water
C)Cleaning solvent
D)Both B and C

Question 21

A cylinder has been measured as having 0.005" of taper. What is the calculated oversize piston size?

A)0.030 inch
B)0.020 inch
C)0.010 inch
D)0.005 inch

Question 22

When preparing an engine to use cast-iron piston rings the cylinders must be honed to a surface finish of ________ microinches.

A)20 to 30
B)18 to 25
C)35
D)200

Question 23

Grit or abrasives that remain after honing the cylinders can be removed by cleaning with ________ before assembling the engine.

A)WD 40
B)Brake cleaner spray
C)Parts solvent
D)Soap and water

Question 24

A ________ can be installed in a cast-iron block to repair a worn or cracked cylinder.

A)Cylinder reamer
B)Cylinder sleeve
C)Cast iron oversize piston
D)Repair splint