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N55 Engine
The cast iron cylinder liners are cast into the aluminum die-casting. The deck area (webs)
between the cylinders have grooved coolant passages. Coolant can flow along these
grooves from one side of the block to the other, thus cooling the deck area between the
cylinders.
N55, coolant passages and web cooling of the engine block
Index Explanation
1
Cooling duct
2
Cylinder liner
3
Grooved coolant passage
4
Oil return ducts, exhaust side
5
Oil return ducts, intake side
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