S54 3.3L Race Engine Rebuild

Steve Dinan has been building high performance and racing engines for BMW’s since 1977, winning 11 racing championships including 3 prototype championships and two 24 Hours of Daytona. The same engine shop that builds the racing engines also builds the street car engines; these talented engineers, machinists, and builders have built hundreds of engines from OEM street rebuilds to full-blown racing engines.

The CarBahn Autoworks S54 3.3L race engine rebuild is blueprinted and balanced, featuring CP centered pin low friction forged pistons and Carrillo forged connecting rods. The bore is enlarged by 1mm, which increases the displacement to 3320cc, and the compression is increased to 12.5:1. A racing spec multi-layer-steel (MLS) head gasket is utilized.

Refer to the graphs below for the power results without catalytic converters on 100 octane race gas and using J607 (the typical aftermarket correction).

For even higher performance, we also offer an optional camshaft and valve spring kit. These racing cams have very high lift and duration, and are complemented by Diamond-Like Carbon (DLC) coated followers and racing valve springs with titanium retainers. Billet aluminum collets are used to control rocker arm movement at high RPM.

S54 3.3L Wet sump:

No cats, 100 octane unleaded, J607

S54 3.3L Wet sump with Race Cams:

No cats, 100 octane unleaded, J607