Cylinder block (Hyundai Elantra J2)

Removal

1. Remove the cylinder head, timing belt, front cover, flywheel, piston and crankshaft.

Examination

Cylinder block

1. Visually inspect the cylinder block for scratches and rust. Also check for cracks and other defects. Correct or replace the defective unit.

2. Using a ruler and thickness gauge, check the top surface of the cylinder block for deformation.



Make sure the surface is not contaminated with pieces of gasket or other foreign materials.

Standard value

Limit value is 0.05 mm or less than 0.1 mm

3. Using a bore gauge, measure the cylinder diameter at three levels in directions A and B. If the cylinders are excessively out of round or taper, and the cylinder walls are heavily worn or scored, the cylinder block should be bored and honed, after which oversized pistons and piston rings should be installed. Measurement points are shown.

• Inner diameter of the cylinder - 75.5 mm
• Inner diameter of the cylinder - taper 0.02 mm

4. If the top of the cylinder is worn and has steps, cut them off with a reamer.

5. Oversized pistons are available in four sizes.

Piston size and marking, mm

• 0.25 O.S. — 0.25
• 0.50 O.S. — 0.50
• 0.75 O.S. — 0.75
• 1.00 O.S. — 1.00

OS Increased size