Quote:
Originally Posted by bimmerjph
Yes, I know its all just speculation. Any idea on exactly how different it will be compared to the N55. In other words is it just a tweak (think M52TÜ vs M54) or is it a complete overhaul (M54 vs M52)? Again, I realize this is all speculation, but I am just very curious.
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I think you meant N52 in your second comparison above.
What we know about the new engine is that it will be part of a unified inline family that includes 3, 4, and 6 cylinder variants both gasoline and diesel. All engines will be turbocharged. Gasoline engines are single-turbo (twin scroll for I4 and I6) with Valvetronic; diesel engines are multi turbo with variable turbine geometry.
I suspect these new engines will be largely evolutionary in functionality as compared to today's N20, N47, N55, and N57 (the I3s will be new obviously). The key is the shared cylinder size, parts, and tooling. Power is rumored to be up to 133hp/L.
M engines based upon these, of course, will have their own unique characteristics and be capable of even more power.