If you drive a high-performance BMW with an N54, N55, or S55 engine, have you replaced the stock crank hub? The crank hub is a crucial component that connects the crankshaft to other parts of the engine, including the timing gears.
When you push up the RPMs, the three-piece OEM hub can slip. When it fails, the result is a loss of engine timing and oil pressure. Thankfully, you can find an advanced aftermarket BMW crank hub upgrade designed to avoid these issues.
Consider the Spline Lock Crank Hub Solution
So, what kind of crank hub should you look for to replace the OEM part? Consider a spline lock crank hub. This design is made using specifically designed grooves that interlock with grooves in the crankshaft. The idea is to provide a 1:1 locking fit.
In other words, a spline lock crank hub solution is designed to prevent slipping, including at the highest RPMs your BMW can achieve. The result is a more reliable hub. Even if you don’t push your BMW to extremes, a spline lock crank hub can be a worthwhile upgrade.
Advanced Spline Lock Crank Hubs Take Things to the Next Level
Aside from the design itself, what else sets the spline lock N54, N55, and S55 crank hub solution apart from other options, including the OEM design? A large part of it comes down to research and development, which includes rigorous testing.
You can find spline lock crank hub solutions tested to withstand intense conditions, including those comparable to racing scenarios (and even beyond that). If a spline lock crank hub can stand up to high-powered racing conditions, you know you’ve got a solution you can count on for everyday reliability.
Get a Crank Hub with Crank Bolt Capture
Spline lock technology isn’t the only feature to look for in a new N54, N55, or S55 crank hub. Another design element to consider is the crank bolt capture (CBC). This feature adds another layer of reliability and security to the crank hub.
The CBC locks the crank bolt into the hub, which keeps it from shifting or backing out. Be sure to check bolt compatibility with this feature. Aftermarket solutions may be exclusively compatible with the factory crank bolt.
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This article was originally published on vargasturbo.com’s blog here.
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