Piston to Engine Block Cylinder Bore Clearance
- Measure the engine cylinder bore. ENGINE MECHANICAL SPECIFICATIONS
Measure the width of the piston (1) at 30 mm (1.181 in) below the crown, top, at the thrust surfaces of the piston, perpendicular to the piston pin centerline.
- Subtract the piston diameter from the cylinder bore diameter in order to calculate the piston-to-bore clearance.
- Refer to ENGINE MECHANICAL SPECIFICATIONS for the correct value of the clearance piston-to-bore.
- If the clearance obtained through measurement is greater than these specifications and the cylinder bores are within the specification, replace the piston.