11 12 100 Removing And Installing/Sealing Cylinder Head (N12)

WARNING: This page is about a different car, the 2008 MINI Cooper and 2007 MINI Cooper. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

11 2 250
11 4 471
11 4 472
11 9 590
11 9 630

IMPORTANT: Fit new cylinder head screws.
Do not wash off bolt coating.
There must not be any coolant, water or oil present in the pocket holes (risk of corrosion and cracking) .

Necessary preliminary tasks:

Remove exhaust system.
Drain coolant.
Drain engine oil.
Remove exhaust manifold.
Remove intake air manifold.
Remove oil dipstick.
Detach coolant hoses from cylinder head.
Remove cylinder head cover. Refer to 12 CYLINDER HEAD WITH COVER .
Remove inlet and exhaust adjustment unit.

Secure crankshaft with special tool 11 9 590 .

Fig 1: Identifying Special Tool (11 9 590) On Crankshaft

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NOTE: Remove and install cylinder head in installed state.
Suspend engine with engine crane (1) from lifting eye (2).

Fig 2: Lifting Engine With Crane

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NOTE: Remove and install cylinder head in installed state.
Move front panel into assembly position.

Release upper alternator screws, do not remove alternator.

Remove right engine mount.

Secure special tool 11 9 630 with standard bolts (1 and 2).

Fig 3: Identifying Special Tool (11 9 630)

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Release screws (1).

IMPORTANT: If the timing chain is stowed in the gear case, the crankshaft must no longer be rotated.
The timing chain may jam on the crankshaft gear.

Installation:

Only during assembly is the timing chain lifted out with a hook.

Fig 4: Identifying Screws (Timing Chain)

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Release screw (1).

Fig 5: Identifying Screws

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Release cylinder head bolts with special tool 11 2 250.

Fig 6: Identifying Special Tool (11 2 250)

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Release cylinder head bolts from outside inwards (10 to 1).

NOTE: Remove shims with a magnet.
Illustration shows camshafts removed.

Fig 7: Identifying Cylinder Head Bolts

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Use special tool 11 4 471 to remove coarse gasket remnants from sealing faces of cylinder head and crankcase.

IMPORTANT: Do not use any metal-cutting tools.

Fig 8: Identifying Special Tool (11 4 471)

Courtesy of BMW OF NORTH AMERICA, INC.

Remove fine gasket remnants with special tool 11 4 472 .

IMPORTANT: Do not use any metal-cutting tools.

There must not be any coolant, water or oil present in the pocket holes (risk of corrosion and cracking) .

Clean all pocket holes.

Replace cylinder head gasket.

Fig 9: Identifying Special Tool (11 4 472)

Courtesy of BMW OF NORTH AMERICA, INC.

IMPORTANT: Fit new cylinder head screws.
Do not wash off bolt coating.

Attach shims to cylinder head bolts.

Shims can drop into the engine (risk of damage!) .

Secure cylinder head bolts from inside outwards (1 to 10).

Tightening torque: See ENGINE - TIGHTENING TORQUES .

NOTE: Illustration shows camshafts removed.

Fig 10: Identifying Cylinder Head Bolts

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Secure bolts (1).

Tightening torque: See ENGINE - TIGHTENING TORQUES .

Fig 11: Identifying Bolts

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Tighten the screw (1).

Tightening torque: See ENGINE - TIGHTENING TORQUES .

Fig 12: Identifying Screws

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Assemble engine.