New Generation N62 Engine Chapter 3 P.73
Course Contents/Background Material
© BMW AG, Service Training
- Crankcase
Fig. 54: N62 crankcase
The crankcase has a one-piece “open deck” design and is made
entirely from AluSil. The cylinder walls are hardened using a
specific procedure (exposure honing).
Exposure honing involves treating the cylinders with a special,
soft strip. This flushes the aluminium from the cylinders and the
hard silicone particles remain on the cylinder walls.
The crankcase can be treated twice (sun honing procedure).
Repair stage 1+2 pistons are available for this purpose.
Due to the different cylinder bore diameters (84 mm/92 mm), the
two engine variants (3.6 l/4.4 l) have different part numbers.
Index Description
1 V (coolant collection area)
KT-8142
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