Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
6th Edition
ISBN: 9780135257272
Author: James D. Halderman
Publisher: PEARSON
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Textbook Question
Chapter 31, Problem 2CQ
Which of the following statements is true about valve seats?
- a. Insert seats are used only in cast-iron heads.
- b. Insert seats do not fit into a machined recess in the cylinder head of automotive engines.
- c. Exhaust valve seats run cooler in aluminum heads than in cast-iron heads.
- d. Integral exhaust valve seats operate at hotter temperatures than do insert seats.
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Engine pistons are usually made of aluminium alloy because it
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B.Wear is less
C.Absorbs shocks
D.Is stronger
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2. intake lag
How many degrees of crankshaft travel until the exhaust valve opens after the intake valve closes? (in degrees)
Chapter 31 Solutions
Automotive Technology: Principles, Diagnosis, And Service (6th Edition) (halderman Automotive Series)
Ch. 31 - What is the procedure for grinding valves?Ch. 31 - When is the valve tip ground? How do you know how...Ch. 31 - What is an interference angle between the valve...Ch. 31 - How is a valve seat insert installed?Ch. 31 - How are the correct valve spring inserts (shims)...Ch. 31 - In a normally operating engine, intake and exhaust...Ch. 31 - Which of the following statements is true about...Ch. 31 - Prob. 3CQCh. 31 - A valve should be discarded if the margin is less...Ch. 31 - To lower and narrow a valve seat that has been cut...
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