Rear exhaust manifold, V6
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Rear exhaust manifold, V6
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1.
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Note the radio code if applicable, remove the battery cover and undo the positive cable on the battery.
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2.
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Remove the upper engine cover and the air inlet to the generator.
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3.
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Detach the oxygen sensor connectors from the holder on the rear SAI valve by releasing the catch and pushing them down.
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4.
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Undo the SAI pipe mounting on the cylinder head. Undo the connections to the exhaust manifold.
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5.
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Undo the hose connections for the SAI valve and remove the pipe with valve.
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6.
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Undo the two outer nuts on the rear exhaust manifold.
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8.
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Detach the front pipe from the front and rear exhaust manifold. Secure the front exhaust pipe with a cable tie,
83 95 212 Cable tie
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Important
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The flexible section at the front of the exhaust system should not be bent out of line by more than 7°, i.e. if the front exhaust system is allowed to hang, it must not bend more than the sag caused by its own weight.
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If the pipe is overloaded, permanent deformation of the components will result. This can cause noise and leakage, and damage at a later stage.
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9.
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Undo the two lower nuts on the rear exhaust manifold.
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10.
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Lower the car to the floor.
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11.
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Undo the three upper nuts on the rear exhaust manifold and remove the exhaust manifold.
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Note
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Smear the studs and gaskets sparingly with Molycote 1000, part. no. 30 20 971 or similar, to prevent them baking on.
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1.
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Clean the sealing surfaces and fit a new gasket for the rear exhaust manifold. Fit the rear exhaust manifold.
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2.
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Fit the three upper nuts on the rear exhaust manifold.
Tightening torque: 20 Nm (14.7 lbf ft).
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4.
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Fit the two lower nuts on the rear exhaust manifold.
Tightening torque: 20 Nm (14.7 lbf ft).
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5.
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Fit a new gasket between the front exhaust pipe and rear exhaust manifold.
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6.
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Fit the front exhaust pipe to the front and rear exhaust manifolds.
Tightening torque:
Turbo, locknuts: 24 Nm (17.7 lbf ft)
Rear exhaust manifold: 40 Nm (29.5 lbf ft)
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7.
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Lower the car to the floor.
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8.
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Fit the two outer nuts on the rear exhaust manifold.
Tightening torque: 20 Nm (14.7 lbf ft).
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9.
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Attach the hose connection to the SAI pipe and check the connection.
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10.
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Fit the SAI pipe with new gaskets to the exhaust manifold and cylinder head.
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11.
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Fasten the oxygen sensor connectors to the holder.
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12.
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Fit the air intake to the generator and the upper engine cover.
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13.
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Connect the positive cable to the battery, fit the battery cover, adjust the clock and set the radio code if applicable.
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