CB463-6008 – Forged Internals, S63 TU4 High Performance Engine (Bottom End Only): F90 M5, F91, F92 & F93 M8 – produced from 4/2019

Part Number: CB463-6008 Category:

$14,999.00

*Note – Core charge may apply, Contact us for details.  For S63 engines produced from 4/2019.

Additional Information

This engine is the bottom end only. This engine is for owners who have low mileage cars that have not had an engine failure and do not need a complete overhaul but just want a stronger engine for higher power applications. It is designed to make the S63 engine strong enough to handle high boost applications.

The S63TU 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.

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.

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FITS

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  • 2019-2021 BMW M5 Competition Sedan
  • 2020 BMW M8 Base Coupe
  • 2020 BMW M8 Base Convertible
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  • 2020-2021 BMW M8 Base Gran Coupe
  • 2020-2021 BMW M8 Competition Gran Coupe

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