How to Select Piston and Bearing: Description

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Connecting points

Connecting parts

Selection items

Selection methods

Between cylinder block to crankshaft

Main bearing

Main bearing grade (bearing thickness)

Determined by match of cylinder block bearing housing grade (Housing inside diameter) and crankshaft journal grade (journal outside diameter)

Between crankshaft to connecting rod

Connecting rod bearing

Connecting rod bearing grade (bearing thickness)

Connecting rod bearing grade = crankshaft pin grade (pin diameter). No grade exists for inside diameter of connecting rod large end.

Between cylinder block to piston

Piston and piston pin assembly. The piston is available together with piston pin as an assembly.

Piston grade (piston diameter)

Piston grade = cylinder bore grade (diameter of bore)

⁽¹⁾ Between piston to connecting rod

⁽¹⁾	For the service parts, the grade for fitting cannot be selected between a piston pin and a connecting rod. (Only 0 grade is available.) The information at the shipment from the plant is described as a reference.

The identification grade stamped on each part is the grade for the dimension measured in new condition. This grade cannot apply to reused parts.
For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the measurement with the values of each selection table.
For details of the measurement method of each part, the reuse standards, and the selection method of the selective fitting parts, follow the applicable procedure.