Cylinder Block
WARNING: This page is about a different car, the 2000 Toyota Tundra, 2000 Toyota Land Cruiser, 2000 Lexus LX 470, 1999 Toyota Land Cruiser, and 1999 Lexus LX 470. However, it is still accessible from the selected car via links, so may be relevant.
- Inspect cylinder block deck surface warpage. Replace cylinder block if deck surface warpage exceeds specification. See CYLINDER BLOCK table under ENGINE SPECIFICATIONS.
- Inspect cylinder block for warpage at main bearing cap areas. See Fig 1. Replace cylinder block if warpage exceeds specification. See CYLINDER BLOCK table under ENGINE SPECIFICATIONS.
- Measure cylinder bore diameter at 2 different places, 90 degrees apart at .39" (10.0 mm) from top and bottom of cylinder bore and at center of cylinder bore. Different cylinder bore sizes are used. Cylinder bore diameter is identified by size mark ("1", "2" or "3") stamped on cylinder block deck surface. See Figure.
- Ensure cylinder bore diameter is within specification. See CYLINDER BLOCK table under ENGINE SPECIFICATIONS. Determine piston-to-cylinder clearance. Ensure clearance is within specification. See PISTONS, PINS & RINGS table under ENGINE SPECIFICATIONS.
- If piston-to-cylinder clearance exceeds specification, bore all 8 cylinders in cylinder block for .020" (.50 mm) oversize pistons. Bore all cylinders for oversize pistons if piston-to-cylinder clearance exceeds specification on any cylinder.
- Install main bearing caps in numerical sequence with arrow on cap pointing toward front of engine. See Figure. Install and tighten main bearing cap bolts to specification in sequence. See Figure. See TORQUE SPECIFICATIONS .
- Ensure main bearing bore inside diameter is within specification. See CYLINDER BLOCK table under ENGINE SPECIFICATIONS. Main bearing bore inside diameter is determined by size mark ("00" through "16") stamped on flange of cylinder block. See Figure.