S65 4.7L Racing Stroker Engine with Racing Cams

Connecting rod bearing and valve springs are common failure items on S65 and S85 engines. In response, CarBahn Autoworks has developed improved bearings and valve springs. This rebuild includes a valve job with new hydraulic lifters, plus timing chains, timing chain guides, timing chain tensioners and all associated seals and gaskets.

History

Steve Dinan has been building high performance and racing engines for BMW s since 1977, winning 12 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.

Note: This engine requires a dry sump system, such as the CarBahn Autoworks Dailey Engineering dry sump kit.

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

S65 4.7L Dry Sump with race cams:

No cats, 100 octane unleaded, J607