Quote:
Originally Posted by solstice
The S55 seems very similar to the N63 in terms of power and characteristics. Will this be the 550, X5/X6 50i,750 engine in the future?
( S55 rpm estimates from dyno and tach. )
N63: 4,395*cc, 402*hp @5500-6400, 440*lb·ft@1750-4500, 7000 rpm redline
S55: 3,000 cc, 430 hp @6000-7000, ~400 lb·ft@2000-5500, 7500 rpm redline
I would think dyno charts from both engines will look very similar with a slight shift of the curves to higher rpms for the S55
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Your question is a little vague. I think in your case for the question asked, the n55 would be a I6 version of an N63... With the only similarity being a twin scroll turbo. The S55 is by far nothing compared to an N63 and N55 if the thought stirs about.