- The markings on the gasket are as follows:
• Grade A (1)
• Grade B (2)
• Grade C (3)
• B lock over-bored 0 .0 1 0 -0 .0 30 in (0.254 -0 .7 6 2 mm) (4)
• B lock over-bored 0 .0 1 0 -0 .0 30 in (0.254 -0 .7 6 2 mm) and deck milled 0.008 in (0.203 mm) (5) - Install the left cylinder head gasket o f the correct grade. The left and right cylinder head gaskets are not interchangeable. Refer to Cylinder Head Gasket Selection.
3. Install the left cylinder head.
4. Install the NEW M l2 cylinder head bolts.
Tighten the M 12 cylinder head bolts in three steps:
Tighten:
1. 1st step 50 N.m (37 lb ft)
2. 2nd step 80 N.m (59 lb ft)
3. 3rd step tighten 60 degrees using J 45059
4. 4th step tighten 60 degrees using J 45059
5. Reuse the M8 bolts. Install the M8 bolts.
Tighten: Tighten the M 8 cylinder head bolts to 25 N.m (18 lb ft).