Cylinder Head Assembly: Specifications

Cylinder Head









M8
Step 1: Tighten bolts 1-8 27 Nm (20 ft. lbs.).
Step 2: Verify that bolts 1-8, all reached 27 Nm (20 ft. lbs.), by repeating step 1 without loosening the bolts.
Step 3: Tighten bolts 9 thru 12 14 Nm (10 ft. lbs.).
Step 4: Tighten bolts 1-8 90 °.
Step 5: Tighten bolts 1-8 90 °, again.
Step 6: Tighten bolts 9-12 26 Nm (19 ft. lbs.)

Head Bolt reuse/replace









The cylinder head bolts are tightened using a torque plus angle procedure. The bolts must be examined BEFORE reuse. If the threads are necked down (2) the bolts should be replaced.

Surface Variation - Head-to-Block

Cylinder head must be flat within 0.0508 mm (0.002 in.)

Surface Variation - Warpage

Cylinder Head Warpage (Flatness) 0.0508 mm (0.002 in.)

Intake Manifold





Intake manifold retaining bolts 12 Nm (105 in. lbs.)

Camshaft Bearing Cap





Bearing Cap Bolts 11 Nm (100 in. lbs.)

Camshaft Pulley/Gear

Non-Oiled Sprocket Bolt 122 Nm (90 ft. lbs)

Exhaust Manifold

Exhaust Manifold Bolts 25 Nm (18 ft. lbs.)