Two technicians are discussing camshafts.Technician A says that increased valve overlap is caused by camshaft lobe wear. Technician B says that most OHV engines have variable valve timing in order to improve performance and reduce emissions. Who is correct?
A. A only
B. B only
C. Both A and B
D. Neither A nor B
Answer: D
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Explain how to make a flat butt joint.
What will be an ideal response?
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The 21st century section of this chapter lists technologies that some futurists believe might die out in this century. Research two such technologies, and explain why they might die out and what would probably replace them.
What will be an ideal response?
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When removing cylinder heads, the fasteners should be removed in what order?
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