CB463-6003 – Stage 3, S63 TU4 High Performance Engine: F90 M5, F91, F92 & F93 M8 – produced through 3/2019

Part Number: CB463-6003 Category:


*Note – Core charge may apply, Contact us for details. For S63 engines produced through 3/2019


Additional Information

The S63 engine is not designed to have large increase in boost. CarBahn has designed a high-performance engine to handle very high outputs by utilizing higher quality racing components. This engine includes higher quality racing Forged Carrillo connecting rods, CP forged pistons and CarBahn high-performance valve springs, ported heads and reground crankshaft with stronger bearings. This Engine includes a complete rebuild with a valve job, timing chains, chain guides, tensioners, water pump thermostat, new bearings, seals and gaskets.

The stock high compression ratio is high for CAFÉ. (Corporate average fuel economy). However, this increased compression limits engine performance with higher boost setting by decreasing the size of the fuel air charge in the combustion chamber and by forcing the ignition timing to retard far below MBT (mean best timing). The CarBahn engine has .5 less compression to optimize the engine for the increased boost. If this an emissions legal street car the lowered compression has the added benefit of reducing catalyst inlet temperatures and improved drivability on pump gas.

Includes, Forged Rods, Forged Pistons, high performance valve springs for more boost, Ported heads, Reground crankshaft with stronger bearings, Labor and machine work for complete overhaul.

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