Contents Wiring diagrams Section: Mechanical All sections

Engine Mechanical: Overview Infiniti QX80 I

Description

Selection pointsSelection partsSelection itemsSelection methods
Between cylinder block and crankshaftMain bearingMain bearing grade (bearing thickness)Determined by match of cylinder block bearing housing grade (inner diameter of housing) and crankshaft journal grade (outer diameter of journal)
Between crankshaft and connecting rodConnecting rod bearingConnecting rod bearing grade (bearing thickness)Determined by match of connecting rod big end diameter grade (inner diameter of housing) and crankshaft pin outer diameter.
Between cylinder block and pistonPiston and piston pin assembly (Piston is available together with piston pin as assembly.)Piston grade (piston skirt diameter)Piston grade = cylinder bore grade (inner diameter of bore)
  1. The identification grade stamped on each part is the grade for the dimension measured in new condition. This grade cannot apply to reused parts.
  2. For reused or repaired parts, measure the dimension accurately. Determine the grade by comparing the measurement with the values of each selection table.
  3. For details of the measurement method of each part, the reuse standards and the selection method of the selective fitting parts, refer to the text.