Question 1

List two methods of head resurfacing.

Accepted Answer

The answer of List two methods of head resurfacing.
...

Question 2

What is the maximum amount of warpage allowed on an aluminum head before it must be resurfaced?

Accepted Answer

The answer of What is the maximum amount of warpage...

Question 3

When repairing a crack, what should be done to both ends of the crack to prevent it from growing larger?

Accepted Answer

The answer of When repairing a crack, what should be...

Question 4

Why are valve guides reamed without lubricant?

Accepted Answer

The answer of Why are valve guides reamed without lubricant?...

Question 5

Before using a valve spring compressor, what part of the valve and spring assembly should be struck with a short piece of pipe and a hammer?

Accepted Answer

The answer of Before using a valve spring compressor, what...

Question 6

Would smoke during deceleration most likely be traced to the seal for the intake or exhaust guide?

Accepted Answer

The answer of Would smoke during deceleration most likely be...

Question 7

An engine has excessively worn exhaust guides. Technician A says to look for weak or short exhaust valve springs. Technician B says that this can cause excessive crankcase pressure. Who is right?

Accepted Answer

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

Question 8

What caution is necessary when setting an OHC head on a bench?

Accepted Answer

The answer of What caution is necessary when setting an...

Question 9

Which cylinder heads should not be cleaned by glass beading?

Accepted Answer

The answer of Which cylinder heads should not be cleaned...

Question 10

When repairing valve guides, what are two reasons that integral guides are used with iron heads?

Accepted Answer

The answer of When repairing valve guides, what are two...

Question 11

Briefly distinguish between a head called a stock replacement and a bolt-on head.

Accepted Answer

The answer of Briefly distinguish between a head called a...

Question 12

Technician A says that Magnaflux is a crack detection method that is commonly used on aluminum heads. Technician B says that bead blasting is the preferred method for cleaning OHC heads. Who is right?

Accepted Answer

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

Question 13

An engine has excessive valve guide wear. Technician A says to ream the guide and install a new valve with an oversized stem. Technician B says to knurl the valve stem and reinstall it in the guide. Who is right?

Accepted Answer

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

Question 14

Technician A says that valve stem-to-guide clearance can be measured using a dial indicator. Technician B says that valve stem-to-guide clearance can be measured using a feeler gauge. Who is right?

Accepted Answer

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

Question 15

A cylinder head has required substantial metal removal to make it flat. Technician A says that a shim can be installed under the head gasket to compensate. Technician B says that on OHC engines, the valve timing will be retarded. Who is right?

Accepted Answer

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

Question 16

An engine has a warped cylinder head. Technician A says that this could be caused by running the engine with a faulty thermostat. Technician B says that this could be because the engine was overheated. Who is right?

Accepted Answer

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

Question 17

Valve guides can be driven in using an air chisel or hammer.

Accepted Answer

A) True 
 B)False

Question 18

Technician A says in case of extremely hard carbon deposits, an old valve can be used to break off carbon before cleaning. Technician B says some valve spring compressors can be used on or off the car. Who is correct?

Accepted Answer

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

Question 19

Technician A says knurling is a metal displacement process not a cutting process. Technician B says that guides worn as much as 0.012" can be successfully knurled. Who is correct?

Accepted Answer

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

Question 20

Aluminum melts at 750 degrees Fahrenheit.

Accepted Answer

A) True 
 B)False

Exam 7: Cylinder Head: Parts and Service

List two methods of head resurfacing.

What is the maximum amount of warpage allowed on an aluminum head before it must be resurfaced?

When repairing a crack, what should be done to both ends of the crack to prevent it from growing larger?

Why are valve guides reamed without lubricant?

Before using a valve spring compressor, what part of the valve and spring assembly should be struck with a short piece of pipe and a hammer?

Would smoke during deceleration most likely be traced to the seal for the intake or exhaust guide?

An engine has excessively worn exhaust guides. Technician A says to look for weak or short exhaust valve springs. Technician B says that this can cause excessive crankcase pressure. Who is right?

What caution is necessary when setting an OHC head on a bench?

Which cylinder heads should not be cleaned by glass beading?

When repairing valve guides, what are two reasons that integral guides are used with iron heads?

Briefly distinguish between a head called a stock replacement and a bolt-on head.

Technician A says that Magnaflux is a crack detection method that is commonly used on aluminum heads. Technician B says that bead blasting is the preferred method for cleaning OHC heads. Who is right?

An engine has excessive valve guide wear. Technician A says to ream the guide and install a new valve with an oversized stem. Technician B says to knurl the valve stem and reinstall it in the guide. Who is right?

Technician A says that valve stem-to-guide clearance can be measured using a dial indicator. Technician B says that valve stem-to-guide clearance can be measured using a feeler gauge. Who is right?

A cylinder head has required substantial metal removal to make it flat. Technician A says that a shim can be installed under the head gasket to compensate. Technician B says that on OHC engines, the valve timing will be retarded. Who is right?

An engine has a warped cylinder head. Technician A says that this could be caused by running the engine with a faulty thermostat. Technician B says that this could be because the engine was overheated. Who is right?

Valve guides can be driven in using an air chisel or hammer.

Technician A says in case of extremely hard carbon deposits, an old valve can be used to break off carbon before cleaning. Technician B says some valve spring compressors can be used on or off the car. Who is correct?

Technician A says knurling is a metal displacement process not a cutting process. Technician B says that guides worn as much as 0.012" can be successfully knurled. Who is correct?

Aluminum melts at 750 degrees Fahrenheit.