* 1st tightening: 49Nm (36 lb-ft)
* 2nd tightening: 69Nm (51 lb-ft)
* Final tightening: 88Nm (65 lb-ft)
It is important to follow these torque specifications in order to ensure proper engine operation. Over-tightening the cylinder head bolts can cause the cylinder head to warp, which can lead to a number of problems, including coolant leaks and engine damage. Under-tightening the cylinder head bolts can also cause problems, as it can allow the cylinder head to loosen and move, which can lead to oil leaks and engine damage.