Connecting rod radial clearance, measuring
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2009 Audi S4, 2008 Audi S4, 2007 Audi S4, 2006 Audi S4, and 2005 Audi S4. However, it is still accessible from the selected car via links, so may be relevant.
Special tools, testers and auxiliary items required
- Plastigage
Test sequence
- Remove connecting rod bearing caps.
- Clean bearing caps and journals
- Place Plastigage over entire width of bearing journal or into bearing shells.
- Install connecting rod bearing cap and tighten to 30 Nm. Do not turn crankshaft.
- Remove connecting rod bearing caps again.
- Compare width of Plastigage with measuring scale:
- Radial clearance, new: 0.028 to 0.077 mm.
- Radial clearance wear limit: 0.12 mm.
- Replace bolts for connecting rod bearings.