Nissan GT-R (R35) · Service Manual ENGINE

EXHAUST SYSTEM

Exploded View



NNBIA0004GB.JPG

1.
 		Mounting bracket (No. 4)
 		2.
 		Main muffler assembly
 		3.
 		Bracket
4.
 		Mounting bracket (No. 3) (RH)
 		5.
 		Bracket
 		6.
 		Mounting bracket (No. 2)
7.
 		Gasket
 		8.
 		Sub muffler
 		9.
 		Gasket
10.
 		Front cross bar assembly
 		11.
 		Mounting bracket (No. 3) (LH)

Refer to Components for symbols in the figure.

Removal and Installation


■ CAUTION ■
  • Be sure to use genuine exhaust system parts or equivalents which are specially designed for heat resistance, corrosion resistance, and shape.
  • Perform the operation with the exhaust system fully cooled down because the system is hot just after engine stops.
  • Be careful not to cut hand on the heat insulator edge.
  • Never disassemble main muffler assembly.
 
 REMOVAL

    1.Remove rear bumper. Refer to Exploded View.
    2.Remove front cross bar assembly.
    3.Remove the nuts fixing main muffler assembly and sub muffler.
    4.Remove the nuts fixing sub muffler and catalyst.
    5.Remove sub muffler.
    6.Remove the nuts from each mounting bracket.
    7.Remove main muffler assembly.
    ■ CAUTION ■
    Be careful not to bump main muffler assembly against its surrounding parts.
 
 INSTALLATION

■ CAUTION ■
  • Always replace exhaust tube gaskets with new ones when reassembling.
  • If heat insulator is badly deformed, repair or replace it. If deposits such as mud pile up on the heat insulator, remove them.
  • Remove deposits from the sealing surface of each connection. Connect them securely to avoid gases leakage.
  • Temporarily tighten mounting bolts and nuts. Check each part for unusual interference, and then tighten them to the specified torque.
  • When installing each mounting bracket, avoid twisting or unusual extension in up/down and right/left directions.
    1.Install mounting brackets to main muffler assembly, checking the front mark of mounting brackets.
    2.Install main muffler assembly.
    ■ CAUTION ■
    Be careful not to bump main muffler assembly against its surrounding parts (rear suspension member etc.).
    3.Temporarily tighten the nuts of each mounting brackets.
    4.Install sub muffler, and then temporarily tighten the nuts fixing main muffler assembly and sub muffler.
    5.Temporarily tighten the nuts fixing sub muffler and catalyst.
    6.Tighten the nuts mounting bracket (No. 4) to the specified torque.
    7.Tighten the nuts mounting bracket (No. 3) to the specified torque.
    8.Tighten the nuts mounting bracket (No. 2) to the specified torque.
    9.Tighten the nuts fixing main muffler assembly and sub muffler to the specified torque.
    10.Tighten the nuts fixing sub muffler and catalyst to the specified torque.
    11.Install all the remaining parts in the reverse order of removal.

Inspection

 
 INSPECTION AFTER REMOVAL

  • Check that the muffler finisher installation position, referring to the figure.
    NNBIA0005ZZ.JPG

    A
    		: Under view
    B
    		: Protrusion (main muffler assembly side)
    c
    		: 28 mm (1.10 in)

    		: Vehicle front

    ■ CAUTION ■
    Be sure to correct the installation position if it is different from the position shown in the figure.
 
 INSPECTION AFTER INSTALLATION

  • Check that clearance between muffler finisher and rear bumper is even.
    • If the clearance is not even, reinstall main muffler assembly.
      ■ CAUTION ■
      When reinstalling main muffler assembly, check the muffler finisher installation position. Refer to “INSPECTION AFTER REMOVAL”.
  • With engine running, check exhaust tube joints for gas leakage and unusual noise.
  • Check to ensure that mounting brackets are installed properly and free from undue stress. Improper installation may result in excessive noise and vibration.