Stage 2 B58 High Performance Engine (B30A 2WD) | BMW 340i/440i/540i/640i/740i/M240i
Vehicle Fitment & Product Details
- Type Engines & Engine Parts
- Make BMW
- Model(s) 340i, 440i, 540i, 640i, 740i, and M240i
- Vehicle Year(s) 2015, 2016, 2017, 2018, 2019, 2020, and 2021
- Chassis G30, F34, F33, F12, F13, F22, and F23
- Body Style(s) Sedan, Coupe, Gran Coupe, Convertible, and Gran Turismo
- Part Number CBB58-6201
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The stock engine compression ratio is relatively high due to the Corporate Average Fuel Economy (CAFE) standards which push for consistently higher fuel economy in cars and trucks. However, this increased compression limits engine performance with higher boost settings by decreasing the size of the fuel-air charge in the combustion chamber, forcing the ignition timing to retard far below MBT (mean best timing, the theoretical optimal ignition timing). Therefore, the Carbahn B58 engine has 0.5 less compression to optimize the engine for the increased boost.
The CarBahn engine is both stronger and less expensive than the BMW OEM factory engine. The B58 CarBahn engine is designed to improve the strength of your engine if you are tuning your car. Connecting rods are replaced with Carrillo forged racing rods. Pistons are CP forged racing pistons. The engine also comes with lowered compression, ported cylinder head and high-performance valve springs for ultra-high boost pressures. The engine is a complete overhaul with blue printing and balancing. This engine is designed for an increase in torque of 100% over stock.
Steve Dinan’s engine shop has been building racing engines for 43 years. Those engines have won many championships including three prototype racing championships including; 2 overall wins in the 24hrs of Daytona in 2011-2013. You will not find a higher quality engine. All engines are backed with a two-year warranty.