The keyed crank hub kit includes the Keyed hub, Crank bolt, Drill, drill fixture, and drill fixture bolt. The gasket/hardware kit includes OE and OEM gaskets and hardware needed to perform the install. It does not include fluids or any additional service tools.
We are proud to release our keyed crank hub kit for the S55, N55, and N54 BMW motors. This keyed solution eliminates the friction washer design that BMW used to affix the crank hub, timing gear, and oil pump gear to the end of the crankshaft.
The original flawed design allows the timing gear to spin independently from the crank, especially when the motor is modified. Best case scenario the motor needs to be re-timed with new components. Worst case, the valves contact the pistons requiring a complete overhaul. Common symptoms are rough running and camshaft angle deviation faults. We had this issue several times on our shop F80 M3, one of which required valve replacement. At that point we had this solution machined, and we installed it in our car and a few other test cars last year. We went from a failure at each event to setting new records at the track and on the dyno. We have now achieved a best 1/4 mile time of 9.35@151mph, and we just recently made 899whp/805tq on our Dynojet on E85 fuel. We have two other cars that have made over 1150whp.
Our keyed hub kit requires a skilled technician with access to BMW timing tools and factory repair documents. These instructions are currently available here:https://www.newtis.info/. Please read our install instructions from start to finish before attempting the repair. If you have any questions, please email@example.com. We do not offer any guarantee for this keyed hub kit as it is a race only part, including damage from improper install. These supplementary install instructions are provided to assist a skilled technician in addition to the OEM timing and oil pan removal procedure. The final torque procedure differs from the OEM process and is explained at the end of this document. Some install tools that are required are listed below:
2-post automotive lift ¾ inch breaker bar and socket for crank bolt (S55 breakaway torque for crank bolt is over 440 ft/lbs torque!) Torque wrench capable of OEM crank bolt torque Crank locking tool BMW Timing tools Crank seal/front seal install tools Engine support cradle Small 3/8" drill Tap Magic or other heavy oil for drilling
You will also need the following OEM parts to complete the job at the minimum:
Valve cover gasket set Front crank seal (2) front cover seals (2) vanos bolts Oil pan bolts Oil pan gasket BMW Coolant Engine oil