BMW S63
| BMW N63 engine | |
|---|---|
| Overview | |
| Manufacturer | BMW, Bayerische Motoren Werke AG |
| Production | 2008- |
| Combustion chamber | |
| Configuration | 90° V8 |
| Chronology | |
| Predecessor | BMW N62 |
The BMW N63 is a twin turbo DOHC V8 piston engine which replaced the (naturally aspirated) N62. It was launched in the 2008 BMW X6 xDrive50i, and later the F01 BMW 750i. The location of the intake and exhaust manifolds are reversed compared to a traditional V8. The BMW Motorsport division version of this engine, called S63, debuted in the X5M and X6M and later appeared in the M5 and M6. Alpina also uses a variant of this engine in its B5 Bi-Turbo, B6 Bi-Turbo and B7 Bi-Turbo.
The exhaust manifolds and turbochargers are located between the cylinder banks (on the "inside" of the V8) and the intake manifolds are located on the outside of the engine; this is opposite to the traditional manifold arrangement for a V8 with intakes in the "V" of the engine and the exhaust manifolds on the outside of the engine V. This new design creates a more compact engine package and decreases the exhaust runner length from the exhaust valves to the turbochargers. The engine uses air-to-water intercoolers, which are more efficient and provide a shorter air path than standard front mounted air-to-air intercoolers.
Similar to the N54B30, the original N63B44 and S63 do not use the second generation Valvetronic technology found in current BMW engines. The principal advantage of Valvetronic is the reduction of intake vacuum, which is not an issue in the pressurized intake found in a turbo-charged engine. Valvetronic was finally added to the updated M63TU variant of the engine.
NOTE: Review additional information in "N63 Customer Care Recall Package" Section on bottom of this page
Applications:
The N63TU engine is the successor to the N63 that also remedied the many technical issues of the N63 engine before it that are further explained on the bottom of this page in the "N63 Customer Care Recall Package" section. The further developed N63TU engine is the latest fuel-mixture generation technology Turbo Valvetronic Direct Injection TVDI. There are strong similarities here to the N20 or N55 engines. The new engine boasts better performance data at reduced fuel consumption and CO2 emissions.
Applications:
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