Torque Specifications

CYLINDER HEAD - Torque Specs

Cylinder Head - 2.5L (QR25DE):

Cylinder Head - 2.5L (QR25DE):

Cylinder head bolts
Step 1: 98.1 Nm (10 kg-m, 72 ft. lbs.)
Step 2: 0 Nm (0 kg-m, 0 ft. lbs.) (loosen)
Step 3: 34.3 - 44.1 Nm (3.5 - 4.4 kg-m, 26 -32 ft. lbs.)
Step 4: 75° - 80° (target: 75°) clockwise
Phase 5: 75° - 80° (target: 75°) clockwise

Outer Diameter of Cylinder Head Bolts





Cylinder head bolts are tightened by using the plastic zone (Torque-to-yeild) tightening method. Whenever the size difference between d1 and d2 exceeds the limit, replace the bolts with new ones.

- Subtract the head bolt diameter measurement taken at d2 from the head bolt diameter measurement taken at d1. If the difference between d1 and d2 exceeds the limit, replace the bolts with new ones.

Limit (d1 - d2):.......................0.23 mm (0.0091 inch) or less

If reduction of outer diameter appears in a position other than d2, use it as d2 point.



ROCKER COVER

Rocker Cover - 2.5L (QR25DE):

Tighten the rocker cover bolts in two steps, in the numerical order as shown.

Rocker cover bolt: 1.0 - 2.9 Nm (0.1 - 0.3 kg-m, tightening 1st step 9 - 26 inch lbs.)
Rocker cover bolt: 7.4 - 9.3 Nm (0.75 - 0.95 kg-m, tightening 2nd step 65- 82 inch lbs.)