Engine, cylinder head 911 Carrera (996) · Installing cylinder head -GT3

Engine, cylinder head 911 Carrera (996) Installing cylinder head -GT3 1. Replacecylinder-headgasket. Replacethe seal between the cylinder head and the cylinder housing. The designation "Top" must face upwards. 256_99 3. Mount chain box. Replacethe chain box base seal. Place the chain box in position and tighten the five fastening screws. Screws M8 x 30 and M8 x 35 (arrows in picture), Do not forget the screw in the chain 255_99 box! Tighteningtorque: 23 Nm (17 ftlb.) 2. Place cylinder head in position. Place the cylinder head back on the cylinders. In doing so, make sure that the inlet ducts in their correct position point upwards (inlet ducts on the same side as the knock sensor). Mountthe 12 internal serration screws with washers and tighten from the inside outwards as shown in the picture. Tightening torque: Initial tightening: 30 Nm (22 ftlb.), then unscrew. ~ ~ Final tightening: 20 Nm (15 ftlb.), then 1 x 900 M8 x 35 screws -see arrows - 218_99 turn 15 -180 15 70 23 Installing cylinder head -GT3 99615173 Printed in Gennany -37, 1999