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Engine Mechanical - QR25DE: Specifications Nissan Altima L31 рестайлинг

Mechanical 2 illustrations ~273 words

Parts Requiring Angular Tightening

  1. Use an angle wrench for the final tightening of the following engine parts.
  1. Cylinder head bolts
  2. Lower cylinder block bolts
  3. Connecting rod cap bolts
  4. Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angular tightening)
  5. Do not use a torque value for final tightening.
  6. The torque value for these parts are for a preliminary step.
  7. Ensure thread and seat surfaces are clean and coated with engine oil.

Scheme 1

Scheme 1: REMOVAL OF LIQUID GASKET SEALING
  1. After removing the bolts and nuts, separate the mating surface and remove the sealant using Tool. Tool number : KV10111100 (J-37228) CAUTION: Be careful not to damage the mating surfaces.
  2. In areas where the cutter is difficult to use, use a plastic hammer to lightly tap (1) the cutter where the RTV Silicone Sealant is applied. Use a plastic hammer to slide the cutter (2) by tapping on the side. CAUTION: If for some unavoidable reason a tool such as a flat-bladed screwdriver is used, be careful not to damage the mating surfaces.

GENERAL SPECIFICATIONS

Identifying General Specifications Cylinder arrangement In-line 4 Displacement cm 3 (in 3 ) 2,488 (151.82) Bore and stroke mm (in) 89.0 x 100 (3.50 x 3.94) Valve arrangement DOHC Firing order 1-3-4-2 Number of piston rings Compression 2 Oil 1 Compression ratio 9.5:1 Compression pressure kPa (kg/cm 2 , psi) / 250 rpm Standard 1,250 (12.8, 181.3) Minimum 1,060 (10.8, 153.7) Differential limit between cylinders 100 (1.0, 14) Valve timing Unit: degree a b c d e f 224° 244° 0° 64° 3° 41°

Scheme 2

Scheme 2: GENERAL SPECIFICATIONS

See also:
FUEL PRESSURE RELEASE