Subsequent work for installing cylinder head

1. Insert three new O-rings at the spark-plug recesses -Arrows- , lightly coat with high-pressure grease.

Fig 1: O-rings on spark-plug recess seal

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Information

There must be no visible signs of wear on the flat-base tappets and fitting bores of the flat-base tappet housing.

2. Insert flat-base tappet housing with 11 M6 x 35 Torx screws -1- . Tighten screws from the inside out and in diagonally opposite sequence. → Tightening torque: 10 (7.5 ftlb.) Nm .

Fig 2: Flat-base tappet housing bolts

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NOTE: Interchanged or dirty bucket tappets.

Scoring on cylinder head

→ Since the bucket tappets have been run in the fitting bores in the housing, therefore do not interchange them.

→ Absolute cleanliness is essential.

3. Coat the flat-base tappets with new engine oil and insert them in their original position into the fitting bores in the flat-base tappet housing.

The switching tappet position (intake side) is pre-set by the dowel pin -Arrow- .

Fig 3: Operating plunger position

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4. Install camshaft and set timing REMOVING AND INSTALLING CAMSHAFTS .

5. Install cylinder head cover REMOVING AND INSTALLING CYLINDER HEAD COVER - ENGINE REMOVED .

6. Install exhaust manifold with new screws M8 x 26. REMOVING AND INSTALLING (INCLUDING EXHAUST MANIFOLD) CATALYTIC CONVERTER

Fit new metal seal with the seam towards the cylinder head.
Tighten screws from the inside out and in diagonally opposite sequence. → Tightening torque: 23 (17 ftlb.) Nm .