Thread: N57D30 Engine
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      01-24-2011, 02:18 PM   #2
HighlandPete
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Drives: BMW F11 535i Touring
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N47/57 series engines have a completely different manifold design. The swirl flap mechanisms are totally different, and of an in-line design.

As is shown on the BMWLand threads, the older designs have been a cause of great concern and debate, as total engine failures have been caused by a simple ingestion of a flap part.

Revisions have been made even on the M47/57 engines, but early cars with small flap spindles had major issues. We can see why BMW have moved to a new design, with ther latest engines.

HighlandPete
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