Torque settings for Nissan qg16de head bolts?

For the Nissan QG16DE engine, the head bolt torque specifications typically require an initial torque of 30 Nm (22 lb-ft) followed by a final torque of 90 degrees. It is crucial to follow the manufacturer's recommended sequence for tightening the bolts to ensure even pressure on the cylinder head. Always refer to the specific service manual for your vehicle, as variations may exist based on production year or specific model.