If the manufacturer's instructions do not...

Question 1 of 270705eccefa1bacbc34ba4d474d5

If the manufacturer's instructions do not state otherwise, which of the following progressions represent the best order for tightening the head bolts shown in the illustration? See illustration MO-0028.

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Question 1 of 27070

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🔍 Key Concepts

• Typical practice for tightening cylinder head bolts when no manufacturer’s pattern is given • How a crisscross / star pattern helps avoid warping the head and gasket • Why tightening should progress from the center area toward the outside (or most evenly spaced points)

💭 Think About

• Look at the physical positions of bolts 1 through 8 on the illustration. If you start at bolt 1, which sequence keeps you jumping to the bolt most nearly opposite each time? • Which option avoids going around the circle in order and instead creates an alternating, balanced pattern across the head? • For each choice, sketch the path on the circle: which one gives the most symmetrical ‘X’ or star pattern and keeps loads even on opposite sides?

✅ Before You Answer

• Verify that the chosen sequence never tightens several adjacent bolts one after another around the circle • Check that each step moves you to a bolt that is roughly opposite or well separated from the previous one • Confirm that the final pattern would pull the head down evenly without twisting it in one direction