Audi Workshop Service and Repair Manuals

Connecting Rod: Specifications

NOTE:

Main and connecting rod bearings are available in .010 inch, .020 inch and .030 inch undersizes.

BEARING CLEARANCE
CRANKSHAFT END PLAY (Checked at #4 Main Bearing) 

New Part .............................................................................................................................................................................  .003-.007 in. (.07-.18mm)
Wear Limit ........................................................................................................................................................................................  .010 in. (.25mm)

MAIN BEARING

New Part .......................................................................................................................................................................  .0006-.003 in. (.016-.075mm)
Wear Limit ........................................................................................................................................................................................  .006 in. (.16mm)

ROD BEARING

New Part .......................................................................................................................................................................  .0006-.002 in. (.015-.062mm)
Wear Limit ........................................................................................................................................................................................  .005 in. (.12mm)
Side Clearance (maximum) ................................................................................................................................................................  .016 in. (.4 mm)

2.2 LITER ENGINE CRANKSHAFT JOURNAL SIZES (mm)

STANDARD

Main Bearing Journal ............................................................................................................................................................................  57.958-57.978
Rod Bearing Journal .............................................................................................................................................................................  45.958-45.978

1ST UNDERSIZE

Main Bearing Journal ............................................................................................................................................................................  57.708-57.728
Rod Bearing Journal .............................................................................................................................................................................  45.708-45.728

2ND UNDERSIZE

Main Bearing Journal ............................................................................................................................................................................  57.458-57.478
Rod Bearing Journal .............................................................................................................................................................................  45.458-45.478

3RD UNDERSIZE

Main Bearing Journal ............................................................................................................................................................................ 57.208-57.228 
Rod Bearing Journal .............................................................................................................................................................................  45.208-45.228

2.22 LITER ENGINE CRANKSHAFT JOURNAL SIZES (mm)

STANDARD

Main Bearing Journal ...........................................................................................................................................................................  57.958-57.978 
Rod Bearing Journal .................................................................................................................................................................................  47.76-47.78

1ST UNDERSIZE

Main Bearing Journal ............................................................................................................................................................................  57.708-57.728
Rod Bearing Journal .................................................................................................................................................................................  45.51-47.53

2ND UNDERSIZE

Main Bearing Journal ............................................................................................................................................................................  57.458-57.478
Rod Bearing Journal .................................................................................................................................................................................  47.26-47.28

3RD UNDERSIZE

Main Bearing Journal ............................................................................................................................................................................  57.208-57.228
Rod Bearing Journal .................................................................................................................................................................................  47.01-47.03