Quote:
Originally Posted by NICKTENN
Is that a N55 or N54, or something new??
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N55, but modified, and second turbo added.
It's in the text...
"The design and construction of the excellent BMW 3.0 litre straight-six cylinder (N55) engine serves as a starting-point for a specially cast aluminium crankcase with Bi-Turbo capable flanges. These enable the mounting of two turbochargers along with required oil and water connections and a close-coupled catalytic converter arrangement. ALPINA specific NGK spark plugs and a forged steel high-strength crankshaft guarantee long-lasting stability."