Quote:
Originally Posted by j23a45m
You do know that the new m3/4 is using pretty much a N55 just with 2 turbo's right? If they're getting 365 hp from the n55 that's a good thing to know on our end.
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There's a lot more to the S55 than a couple of turbos.
ENGINE
- 3.0L inline 6 cylinder engine (S55) with two mono-scroll turbochargers
- 3,027 cc (compare to 2,979 cc of N55)
- 89.6mm bore / 80mm stroke over-square (compare to 84mm bore / 89.6mm stroke under-square of N55)
- Derived from N55 engine
- Direct Injection
- VALVETRONIC
- Double-VANOS
- closed-decked crankcase (4.4 lbs / 2kg lighter)
- twin-wire arc-spray coating (instead of liners) in cylinder bores reduce engine weight
- 20 lbs lighter than V8 S65 engine (from E90/E92 M3)
- 430 HP (approximately) from around 5000-7300 RPM
- "far beyond" 369+ LB-FT (500 Nm) from under 2000 RPM to over 5000 RPM
- See Dyno Chart
- Slightly above 7500 RPM redline
Source:
http://f80.bimmerpost.com/forums/sho...d.php?t=892746