RB26 bolt tightening torque
The cylinder head tightening sequence is a five step process. The bolts are tightened from the center outwards.
1. Tighten to 22 ft/lb
2. Tighten to 80 ft/lb
3. Loosen bolts completely to 0 ft/lbs
4. Tighten bolts to 22 ft/lbs
5. Turn bolts 85-90 degrees clockwise with an angle wrench, or tighten to 76-83 ft/lbs when torque wrench is used.
34-38 ft/lbs from the center outwards. Done in two or three steps.
Apply engine oil to connecting rods and nuts before assembly
1. 10-12 ft/lbs
2. Angle wrench 60-65 degrees.
Stock torque is 76-83 ft/lbs.