What is the range in millimeter of the end gap for the top compression ring per 25mm of bore size?(a) 0.01-0.04(b) 0.04-0.07(c) 0.07-0.12(d) 0.12-0.15This question was posed to me in an online interview.My question comes from Engine Components in division Basic Engine Components of Automotive Engine Design

What is the range in millimeter of the end gap for the top compression

1.	What is the range in millimeter of the end gap for the top compression ring per 25mm of bore size?(a) 0.01-0.04(b) 0.04-0.07(c) 0.07-0.12(d) 0.12-0.15This question was posed to me in an online interview.My question comes from Engine Components in division Basic Engine Components of Automotive Engine Design
Answer» Right option is (c) 0.07-0.12 The EXPLANATION: The end gap for the top COMPRESSION ring is controlled from 0.07 to 0.12 millimeters PER 25 mm of bore size. The second end gap should be 0.12-0.25mm wider than the top ring gap to prevent the gas buildup.

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