S63 Vs. N63 Engines: What Are The Key Differences?
S63 Vs. N63 Engines: What Are The Key Differences? The S63 and theN63are 4.4-liter V8 engines made by BMW and installed into its vehicles. While these two V8 engines have several similarities, they also have significant differences. Let’s start with the similarities. The S63 and the N63 have the same bore, stroke, cam profiles, valve diameters, and compression ratio. Both engines are also made of the same aluminum-silicon alloy. The N63 engine was developed before the S63 came onto the scene....