11 24 571 Replacing all connecting rod bearings (W10)

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2008 MINI Cooper, 2007 MINI Cooper, 2006 MINI Cooper, 2005 MINI Cooper, and 2004 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

CAUTION: Replace all connecting rod bolts. Do not wash off bolt coating.

Necessary Preliminary Tasks:

Removing oil pan. Refer to 11 13 000 REMOVING AND INSTALLING, SEALING OR REPLACING OIL SUMP .

Undo connecting rod bolts (1)

Remove connecting rod bearing cap (2).

CAUTION: All connecting rods are cracked and must not be confused (engine damage) . Set down connecting rod bearing caps in order.

Tightening torque, refer to 11 24 1AZ in ENGINE - TIGHTENING TORQUES- COOPER (1.6L) R50/W10 .

Fig 1: Locating Connecting Rod Bearing Cap

G03306147

Courtesy of BMW OF NORTH AMERICA, INC.

Install new connecting rod bearing shells.

CAUTION: Note grinding stages on crankshaft.

Fig 2: View Of Connecting Rod Bearing Shells

G03306148

Courtesy of BMW OF NORTH AMERICA, INC.

Check connecting rod bearing clearance: Piston in BDC position.

Place special tool 00 2 590 (Plastigage model PG 1) on oil-free crankshaft.

Reinstall bearing cap.

Fig 3: Checking Connecting Rod Bearing Clearance

G03306149

Courtesy of BMW OF NORTH AMERICA, INC.

CAUTION: Do not turn the connecting rods or crankshaft.

Use the old connecting rod bolts to check connecting rod bearing clearance.

Tighten down connecting rod screws with special tool 00 9 120 or special tool 11 2 110.

Tightening torque: 11 24 1AZ in ENGINE - TIGHTENING TORQUES- COOPER (1.6L) R50/W10 .

Fig 4: Tightening Connecting Rod Screws With Special Tool 00 9 120

G03306150

Courtesy of BMW OF NORTH AMERICA, INC.

Remove connecting rod cover.

Read off bearing play at width of flattened plastic thread with assistance of measurement scale (connecting rod bearing clearance).

Remove plastic thread.

Fig 5: Reading Off Bearing Play With Measurement Scale

G03306151

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine.

Lubricate all bearing points with engine oil.