Cylinder Head Assembly
Cylinder HeadSurface Variation -Head-to-Block, Head-to-Manifolds and Surface Variation - Warpage
If the warpage is less than 0.05 mm (0.002 in), the cylinder head deck surface does not require resurfacing.
If the warpage is between 0.05-0.20 mm (0.002-0.008 in) or any imperfections or scratches that could inhibit proper cylinder head gasket sealing are present, the cylinder head deck surface requires resurfacing.
If resurfacing is required the maximum amount that can be removed is 0.25 mm (0.010 in).
If the cylinder head deck surface requires more than 0.25 mm (0.010 in) material removal the head must be replaced.
Camshaft Cap Bolt 10 N.m (89 lb in)
Loosen the center intake camshaft bearing cap bolts (1, 2) and the center exhaust camshaft bearing cap bolts (3, 4).
Retighten the center camshaft bearing cap bolts (1, 2, 3, 4).
Exhaust Manifold Nut 50 N.m (37 lb ft)
Exhaust Manifold Bolt 20 N.m (15 lb ft)
Cylinder Head Bolt
Important: DO NOT reuse the old M11 cylinder head bolts.
Cylinder Head Bolt - M8
First Pass 15 N.m (10 lb ft)
Final Pass 60 Degrees
Cylinder Head Bolt - M11
First Pass 45 N.m (33 lb ft)
Final Pass 120 degrees
Intake Manifold
Brace Bolt - Engine Front Cover M12 65 N.m (48 lb ft)
Brace Bolt/Ball Stud - Intake Manifold M6 10 N.m (89 lb in)
Upper-to-Cylinder Head Bolt - Long 23 N.m (17 lb ft)
Upper-to-Cylinder Head Bolt - Short 23 N.m (17 lb ft)
Upper-to-Lower Intake Manifold Bolt 23 N.m (17 lb ft)
Camshaft Intermediate Drive Sprocket Bolt - Idler Sprocket 58 N.m (43 lb ft)