What is the head bolt tightening torque for Toyota 3b engine?

The head bolt tightening torque for the Toyota 3B engine is typically specified as 80 Nm (Newton-meters) for the initial torque. After the initial torque is applied, it's common to perform a further tightening step, usually involving a specific angle measurement, often around 90 degrees. Always consult the vehicle's service manual for the exact specifications and procedures, as they may vary slightly based on the engine's production year or model.