Thread: Which is faster 2009 Z4 sDrive35i or Z4 M roadster?
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      08-04-2009, 09:56 AM   #29
G80indy
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Quote:
Originally Posted by quickfast View Post
Its another block. The alu/mag block wasnt designed for the turbos.
the 3.0i NA (naturally aspirated) motor (N52) is the alum/ mag. block.
The twin turbo 3.0 N54 is all-aluminum. Like the M54 series.
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