Cylinder Block — Checking Condition (Nissan Terrano 1)

1. If external defects are detected (cracks and chips), repair the block or replace it. It is recommended to check for internal defects in the cylinder block, for which you need to hand the block over to the car service workshop.

2. Check the ovality and taper of the cylinders by measuring the diameter in three planes, in directions parallel and perpendicular to the block axis (photo). If the results differ from the standard, the block should be sent to a repair shop. After restoring the block, pistons and rings of repair sizes will be needed.

14.2a Measure the cylinder diameter under the flange (A), at the center (B) and at the bottom (C)

14.2b Telescopic bore gauge for measuring internal diameter

14.2v Measuring the cylinder diameter

3. If the cylinder condition is acceptable, the cylinder wear and the clearance between the cylinder and the piston do not exceed the established standards, then the cylinders need to be honed (photo). It is recommended that the work be performed at a car service center.

14.3a Cylinder honing brush

14.3b Approximate appearance of the cylinder surface after honing

4. Check the deformation of the cylinder block split plane (photo). If the deviation from the plane exceeds the norm, the block should be ground in a car service workshop. The thickness of the material removed from the block should not exceed the thickness of the material removed from the head. If the total size by which the block and head have decreased after grinding exceeds 0.2 mm, the head and block should be replaced.