Cylinder Block Specifications

2007 Audi RS4 Quattro Sedan (8EC) V8-4.2L (BNS)SECTION Cylinder Block Specifications




























































Piston and Cylinder Dimensions





Cylinder bore
Maximum deviation from nominal dimension 0.08 mm

Piston
Maximum deviation from nominal dimension 0.03 mm

Piston Ring End Gap





Piston Ring Side Clearance





Connecting rod bearing
Allocation of connecting rod bearing shell thickness to crankshaft








Connecting rod
Radial clearance
New 0.020 to 0.069 mm
Wear limit 0.120 mm

Main Bearing
Allocation of Crankshaft Bearing Shells for Cylinder Block











Crankshaft
Axial Clearance 0.090 to 0.251 mm





Guide frame








Vibration Damper







RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.